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iDEN and WiDEN Measurement Guide
(iDEN with MotoTalk)
Agilent Technologies E4406A VSA Series
Transmitter Tester
Option HN1
Manufacturing Part Number: E4406-90314
Supersedes E4406-90310
Printed in USA
June 2008
© Copyright 1999 - 2008 Agilent Technologies, Inc.
The information contained in this document is subject to change without notice.
Agilent Technologies makes no warranty of any kind with regard to this material, including but not limited to, the implied warranties of merchantability and fitness for a particular purpose. Agilent
Technologies shall not be liable for errors contained herein or for incidental or consequential damages in connection with the furnishing, performance, or use of this material.
2
Contents
1. Understanding iDEN, WiDEN, and MotoTalk
2. Setting Up the iDEN or WiDEN Mode
Do You Have Enough Memory to Load All Your Personality Options? . . . . . . . . . . . . . . . . 34
3. Making iDEN or WiDEN Measurements
3
Contents
4
Making the MotoTalk Average Power (MT Avg Pwr) Measurement . . . . . . . . . . . . . . . . . . . .69
Making the MotoTalk Transient EVM (MT Trans EVM) Measurement . . . . . . . . . . . . . . . . .75
Contents
4. iDEN and WiDEN Specifications
5
Contents
MotoTalk Transient EVM (MT Trans EVM) Measurement . . . . . . . . . . . . . . . . . . . . . . . .171
MotoTalk Transient Error Vector Magnitude (MT Trans EVM) Measurement . . . . . . . . .215
6
List of Commands
:CALCulate:<measurement>:MARKer[1]|2|3|4:FUNCtion BPOWer|NOISe|OFF . . . . . . . . . . 117
:CALCulate:<measurement>:MARKer[1]|2|3|4:MODE POSition|DELTa . . . . . . . . . . . . . . . . . 119
:CALCulate:DATA<n>:COMPress? BLOCk|CFIT|MAXimum|MINimum|MEAN|DMEan
|RMS|RMSCubed|SAMPle|SDEViation|PPHase
:CALCulate:DATA[n]:PEAKs? <threshold>,<excursion>[,AMPLitude|FREQuency|TIME] . . . . 114
7
List of Commands
8
List of Commands
:INSTrument[:SELect] BASIC|SERVICE|CDMA|CDMA2K|GSM|EDGEGSM|IDEN|
9
List of Commands
10
List of Commands
[:SENSe]:ACP:OFFSet:LIST:ABSolute <power>,<power>,<power>,<power>,<power> . . . . . . . . 180
[:SENSe]:ACP:OFFSet:LIST:BANDwidth|BWIDth
[:SENSe]:ACP:OFFSet:LIST:RCARrier
[:SENSe]:ACP:OFFSet:LIST:RPSDensity
[:SENSe]:ACP:OFFSet:LIST:TEST ABSolute|AND|OR|RELative,
ABSolute|AND|OR|RELative, ABSolute|AND|OR|RELative,
[:SENSe]:ACP:OFFSet:LIST[:FREQuency]
[:SENSe]:ACP:OFFSet:LIST[:FREQuency]
11
List of Commands
[:SENSe]:ACP:OFFSet[n]:LIST:ABSolute
[:SENSe]:ACP:OFFSet[n]:LIST:BANDwidth|BWIDth
[:SENSe]:ACP:OFFSet[n]:LIST:RCARrier
[:SENSe]:ACP:OFFSet[n]:LIST:TEST ABSolute|AND|OR|RELative,
ABSolute|AND|OR|RELative, ABSolute|AND|OR|RELative,
[:SENSe]:ACP:OFFSet[n]:LIST[:FREQuency]
[:SENSe]:ACP:OFFSet[n]:LIST[n]:BANDwidth|BWIDth
[:SENSe]:ACP:OFFSet[n]:LIST[n]:RCARrier
[:SENSe]:ACP:OFFSet[n]:LIST[n]:RPSDensity
[:SENSe]:ACP:OFFSet[n]:LIST[n]:TEST, ABSolute|AND|OR|RELative,
ABSolute|AND|OR|RELative, ABSolute|AND|OR|RELative,
[:SENSe]:ACP:OFFSet[n]:LIST[n][:FREQuency]
[:SENSe]:ACP:TRIGger:SOURce EXTernal[1]|EXTernal2|FRAMe|IF|IMMediate|RFBurst . .195
12
List of Commands
[:SENSe]:APOWer:BANDwidth|BWIDth[:RESolution]:TYPE FLATtop|GAUSsian . . . . . . . . . . 211
[:SENSe]:APOWer:TRIGger:SOURce IMMediate|RFBurst|VIDeo|EXTernal[1]|EXTernal2. . . 214
13
List of Commands
[:SENSe]:BER:TRIGger:SOURce EXTernal[1]|EXTernal2
[:SENSe]:OBW:TRIGger:SOURce EXTernal[1]|EXTernal2|IF|IMMediate|RFBurst . . . . . . . . .199
[:SENSe]:PVTime:AVERage:TYPE LOG|MAXimum|MINimum|MXMinimum|RMS . . . . . . . . .200
[:SENSe]:PVTime:AVERage:TYPE LOG|MAXimum|MINimum|MXMinimum|RMS|POWer . .200
[:SENSe]:PVTime:AVERage:TYPE LOG|MAXimum|MINimum|RMS|SCALar . . . . . . . . . . . . .201
14
List of Commands
[:SENSe]:PVTime:BANDwidth|BWIDth[:RESolution]:TYPE FLATtop|GAUSsian . . . . . . . . . . . 202
[:SENSe]:PVTime:MASK:LIST:LOWer:ABSolute
[:SENSe]:PVTime:MASK:LIST:LOWer:RELative
[:SENSe]:PVTime:MASK:LIST:UPPer:ABSolute
[:SENSe]:PVTime:MASK:LIST:UPPer:RELative
[:SENSe]:PVTime:MASK:LIST:UPPer:TIME
[:SENSe]:PVTime:TRIGger:SOURce EXTernal[1]|EXTernal2
15
List of Commands
[:SENSe]:RADio:SLOT:INBound TCHFull|TCHS31|TCHS31T|TCHE61. . . . . . . . . . . . . . . . . . .221
[:SENSe]:RADio:SLOT:OUTBound TCHFull|TCHS31|TCHS31T|TCHE61 . . . . . . . . . . . . . . . . .222
[:SENSe]:SPECtrum:ACQuisition:PACKing AUTO|LONG|MEDium|SHORt . . . . . . . . . . . . . . .223
[:SENSe]:SPECtrum:ADC:RANGe AUTO|APEak|APLock
[:SENSe]:SPECtrum:AVERage:TYPE LOG|MAXimum|MINimum|RMS|SCALar . . . . . . . . . . .226
[:SENSe]:SPECtrum:BANDwidth|BWIDth:PFFT:AUTO OFF|ON|0|1 . . . . . . . . . . . . . . . . . . . .226
16
List of Commands
[:SENSe]:SPECtrum:BANDwidth|BWIDth:PFFT:TYPE FLAT|GAUSsian . . . . . . . . . . . . . . . . . 227
[:SENSe]:SPECtrum:BANDwidth|BWIDth[:RESolution]:AUTO OFF|ON|0|1 . . . . . . . . . . . . . 228
[:SENSe]:SPECtrum:FFT:WINDow[:TYPE] BH4Tap|BLACkman|FLATtop
|GAUSsian|HAMMing|HANNing|KB70|KB90|KB110|UNIForm . . . . . . . . . . . . . . . . . . . . . . 230
[:SENSe]:SPECtrum:TRIGger:SOURce EXTernal[1]|EXTernal 2|
[:SENSe]:TEVM:BANDwidth|BWIDth:RESolution:TYPE FLATtop|GAUSsian . . . . . . . . . . . . . 216
17
List of Commands
[:SENSe]:TEVM:TRIGger:SOURce IMMediate|RFBurst|EXTernal[1]|EXTernal2 . . . . . . . . . . .215
[:SENSe]:WAVeform:ADC:RANGe AUTO|APEak|APLock|GROund
[:SENSe]:WAVeform:AVERage:TYPE LOG|MAXimum|MINimum|RMS|SCALar . . . . . . . . . . .236
[:SENSe]:WAVeform:BANDwidth|BWIDth[:RESolution]:TYPE FLATtop|GAUSsian . . . . . . . . .237
18
List of Commands
[:SENSe]:WAVeform:TRIGger:SOURce EXTernal[1]|
19
List of Commands
20
1
Understanding iDEN, WiDEN, and MotoTalk
21
Understanding iDEN, WiDEN, and MotoTalk
What is iDEN
What is iDEN
Option HN1 adds iDEN (Motorola’s Integrated Digital Enhanced
Network) capability to the Agilent Technologies E4406A. iDEN is a trademark of the Motorola Company. This chapter introduces you to the iDEN measurement personality. For instructions on how to install the option, see
“Installing Optional Measurement Personalities” on page
.
The iDEN standard combines four communication technologies into a single network: radio, telephone, messaging, and data communications capabilities. The system uses TDMA in a QAM modulation format with multiple-carriers (M-QAM). The modulated signal consists of four frequency division multiplexed sub-channels, each carrying a 16-QAM or 64-QAM signal. The sub-channel approach allows you to use a lower symbol rate which provides resistance to time dispersion.
Option HN1 adds the following measurements:
• The
ACP
key measures adjacent channel power ratio.
• The
BER
key measures bit error rate.
• The
OBW
key measures occupied power bandwidth.
• The
Power vs. Time
key measures transmit power.
• The
Spectrum
key measures standard spectrum analyzer signals in the frequency domain.
• The
Waveform
key measures standard spectrum analyzer signals in the time domain.
• The
Avg Pwr
key measures the average transmit power of normal
(traffic) bursts.
• The
Trans EVM
key measures modulation accuracy, carrier offset, and
VCO settle time when the frequency is hopping between two frequencies.
Option HN1 operates the same as other analyzer measurement options.
This documentation describes option specific information. Refer to the standard instrument manuals for descriptions of other functionality.
What is WiDEN
The WiDEN mode expands the current iDEN measurement capabilities to perform additional signal analysis for the WiDEN Reserved Access inbound slot format.
WiDEN is similar to the iDEN Enhanced 6:1 format in the following ways:
• Both slot formats use the same symbol mapping.
• Both slot formats use the same sync and pilot definitions.
• Both slot formats use the same BER test sequence. However, in
22 Chapter 1
Understanding iDEN, WiDEN, and MotoTalk
What is iDEN
WiDEN the same sequence of BER words is transmitted on all active carriers. However, the sequence starting point is offset from carrier to carrier. For example, when four carriers are transmitted, the sequence transmitted on each carrier is offset by four words from the previous carrier. In this case the BER word sequence transmitted in four active slots (possibly separated by inactive slots) would be:
— Carrier 0 word sequence: 0, 1, 2, 3
— Carrier 1 word sequence: 4, 5, 6, 7
— Carrier 2 word sequence: 8, 9, a, b
— Carrier 3 word sequence: c, d, e, f
• Both slot formats are 15 ms long
WiDEN is dissimilar to the iDEN Enhanced 6:1 format in the following ways:
• WiDEN allows one to four 25 kHz carriers.
• WiDEN allows arbitrary slots within a frame to be active.
• The training sequence is different between the two slot formats.
• The training waveform is DC centered with respect to the composite signal and may or may not be present. For WiDEN this means that the training waveform is often not centered with respect to any given carrier.
• WiDEN adds an SGC pulse for the benefit of the base station at a point in time where there is no data or any other information being transmitted by the mobile. WiDEN can simultaneously transmit up to four carriers at 25 kHz spacing.
You can perform WiDEN signal analysis under any of the allowed carrier combinations. When multiple carriers are present, all carriers will be analyzed at the same time.
The WiDEN mode supports the following measurements for 16-QAM
Modulation Type:
• Occupied BW
• ACPR
• Burst Power
• BER
There are five distinct carrier configurations for WiDEN inbound signals. These configurations are shown in
Chapter 1 23
Figure 1-1
Understanding iDEN, WiDEN, and MotoTalk
What is iDEN
WiDEN Inbound Carrier Configurations
What is MotoTalk
MotoTalk is a tradmark of Motorola Company. It supports mobile-to-mobile communications between a pair or group of MotoTalk radios on a single logical channel in simplex fashion (walkie-talkie).
MotoTalk uses 8FSK modulation format. Because MotoTalk is deployed in the 900 MHz Industrial, Scientific, and Medical (ISM) band, frequency hopping rules governed by FCC regulations are followed.
24 Chapter 1
Understanding iDEN, WiDEN, and MotoTalk
What Does the E4406A VSA Series Transmitter Tester Do?
What Does the E4406A VSA Series Transmitter
Tester Do?
The E4406A VSA Series Transmitter Tester makes measurements that conform to the Motorola iDEN standards specifications.
This standards document defines complex multi-part measurements, like occupied power bandwidth. The E4406A automatically makes these measurements using the measurement methods and limits defined in the standard. The detailed results displayed, when the measurements are made, allow you to analyze iDEN system performance. You may alter the measurement parameters for specialized analysis.
With Option HN1 installed, you can run measurements on an iDEN signal. Selecting the iDEN
MODE
key automatically configures the instrument to measure iDEN signals. For example, selecting iDEN sets the default adjacent channel bandwidth (for the adjacent channel power test) to 10 kHz.
Base stations can be tested in a number of ways. One of the most common is to take the signal from the antenna input or from the base station power amp output. This can be done using a splitter or coupler and external attenuator.
To measure iDEN signals, you must first select the iDEN mode and choose the mode setup parameters. Some of the mode setup choices include measuring both inbound and outbound signals for different standards and in M-16QAM, M-64QAM, or D-JSMR. The mode setup defaults to measuring the inbound (mobiles) signal path. Mode settings are used in all the measurements. You can select the desired measurement and change any of the measurement-specific setup parameters that you want to alter from the default settings. Refer to the following chapters for information on the measurement process.
Chapter 1 25
Understanding iDEN, WiDEN, and MotoTalk
Other Sources of Measurement Information
Other Sources of Measurement Information
Additional measurement application information is available through your local Agilent Technologies sales and service office. The following application notes treat digital communications measurements in much greater detail than discussed in this measurement guide.
• Application Note
Characterizing Digitally Modulated Signals with CCDF Curves
5968-6875E
• Application Note 1314
Testing and Troubleshooting Digital RF Communications Receiver
Designs 5968-3579E
• Application Note 1313
Testing and Troubleshooting Digital RF Communications
Transmitter Designs 5966-3578E
Instrument Updates
The following Website can be used to access the latest information about the transmitter tester: http://www.agilent.com/find/vsa
26 Chapter 1
2
Setting Up the iDEN or WiDEN
Mode
27
NOTE
Setting Up the iDEN or WiDEN Mode
Mode
Mode
You may want to install a new personality or reinstall a personality that you had previously. Instructions can be found in
Optional Measurement Personalities” on page 34 .
At the initial power up, the transmitter tester will come up in the Basic mode, with the Spectrum (Frequency Domain) measurement selected and the Measure menu displayed.
To access the iDEN measurement personality, press
MODE
and select the
iDEN
menu key. To access the WiDEN measurement personality, press
MODE
and select the
WiDEN
menu key.
If you want to set the mode to a known, factory default state, press
Preset
. This will preset the mode setup and all of the measurements to the factory default parameters. These defaults are based on iDEN
M-16QAM, M-64QAM, or D-JSMR specifications and WiDEN
M-16QAM specifications. Preset defaults to the inbound (mobiles) signal path.
Pressing the
Preset
key does not switch instrument modes.
Mode settings are persistent. When you switch from one mode to another mode, the settings you originally selected for the mode will remain active until you change them. This allows you to switch back and forth between modes without having to reset settings each time.
Presetting the instrument or powering the instrument off and on will return all mode settings to their default values.
How to Make a Measurement
The “making measurements” information is organized to help you follow the three-step process shown in the following table:
Step Primary Key
1. Select & setup a mode
MODE
2. Select & setup a measurement
MEASURE
3. Select & setup a view
View/Trace
Setup Keys Related Keys
Mode Setup
,
Input
,
FREQUENCY Channel
System
Meas Setup Meas Control
,
Restart
SPAN X Scale,
AMPLITUDE Y Scale
,
Next Window
,
Zoom
File
,
Save
,
,
Print Setup
,
Marker
,
Search
Changing the Mode Setup
Numerous settings can be changed at the mode level by pressing the
28 Chapter 2
Setting Up the iDEN or WiDEN Mode
Mode
Mode Setup
key. This will access the selection menu listed below. These settings affect only the measurements in the iDEN mode.
Radio
The
Radio
key accesses the iDEN menu as follows:
•
QAM format
- Selects the modulation format of M-16QAM, M-64QAM, or D-JSMR.
•
Device
- Sets the test device to inbound (mobile station) or outbound
(base station). The base station must be put in the test mode to transmit known bit patterns, before testing.
•
Outbound Slot
- Sets the outbound test signal format to:
—
Full Slot
- Reserved
—
Split 3:1
- Reserved
•
Inbound Slot
- Sets the inbound test signal format to:
—
Full Slot
- Reserved
—
Split 3:1
- Res Pseudo
—
Split 3:1
- Res Training
—
Full Slot
- Enhanced 6:1
•
Color Code (0-95)
- Used to define the sync and plot symbols
The
Radio
key accesses the iDEN and WiDEN menu as follows:
Radio Default Settings
QAM format
Device
Inbound Slot
Color Code iDEN
M16QAM
Inbound
Full Slot Reserved
39
N/A
N/A
N/A
39
WiDEN
•
Carrier Config
- Used to define carrier configuration
Input
The
Input
key accesses the menu as follows: (You can also access this menu from the front-panel
Input
key.)
•
RF Input Range
- Allows you to toggle the RF input range between
Auto
and
Man
(manual).
Auto
is not used for Spectrum measurements. If
Auto
is chosen, the instrument automatically takes data to determine the proper attenuator setting, based on the carrier power level where it is tuned. Once you change the
Max Total Pwr
or
Input Atten
value with the
RPG
knob, for example, the
RF Input Range
Chapter 2 29
NOTE
Setting Up the iDEN or WiDEN Mode
Mode
key is automatically set to
Man
. You may need to set the
RF Input Range
to
Man
and enter the expected maximum total power by activating the
Max Total Pwr
key.
Man
is also useful to hold the input attenuation constant for the best relative power accuracy. It is generally recommended to set this to
Auto
. This key is not available in the Spectrum measurement.
•
Max Total Pwr
- Allows you to set the maximum mean carrier power from the UUT (Unit Under Test). The range is
− 100.00 to
+27.70 dBm with 0.01 dB resolution. This is the expected maximum value of the mean carrier power referenced to the output of the UUT.
The
Max Total Pwr
setting is coupled together with the
Input Atten
and
Ext Atten
settings. Once you change the
Max Total Pwr
value with the
RPG
knob, for example, the
RF Input Range
key is automatically set to
Man
.
•
Input Atten
- Allows you to control the input attenuator setting. The range is 0 to 40 dB with 1 dB resolution. The
Input Atten
key reads out the actual hardware value that is used for the current measurement. If more than one input attenuator value is used in a single measurement, the value used at the carrier frequency will be displayed. The
Input Atten
setting is coupled together with the
Max
Total Pwr
setting. Once you change the
Input Atten
value with the
RPG
knob, for example, the
RF Input Range
key is automatically set to
Man
.
The
Max Total Pwr
and
Input Atten
settings are coupled together, so for a given measurement, changing the input
Max Total Pwr
setting by x dB changes the
Input Atten
setting by x dB, and vice-versa. When you switch to a different measurement, the
Max Total Pwr
setting is kept constant, but the
Input Atten
may change if the two measurements have different mixer margins. Thus, you can directly set the transmitter tester input attenuator, or you can set it indirectly by specifying the expected maximum power from the UUT.
•
Ext Atten
- Allows you to enter the external attenuation value for the mobile station. The range is
− 50.00 to +100.00 dB with 0.01 dB resolution. This will allow the instrument to display the measurement results referred to the output of the UUT.
•
IF Align Signal
- Allows you to modify the IF alignment signal.
—
Signal Rate
- Changes the rate of the IF alignment signal. You must enter a divider number from 1 to 12. Each divider number increment halves the signal frequency. For example, at the default DAC setting of 1, the signal is set to 234.375 kHz. If the rate is set to 2, the signal is half that frequency, or 117.188 kHz.
—
Signal Amptd
- Modifies the signal amplitude by entering a DAC value between 0 and 4095. The amplitude range is approximately
30 Chapter 2
NOTE
Setting Up the iDEN or WiDEN Mode
Mode
50 dB. Incrementing the DAC value increases the amplitude of the signal, and will be visible on screen.
—
Signal Type
- Allows you to select a CW, comb, or pulse type signal as the IF align signal.
Input Default Settings
RF input range
Maximum total power
Input attenuation
Auto a
− 15.0 dBm b
0.00 dB External attenuation M.S.
a. Auto is not used for spectrum measurements.
b. In Auto mode, the maximum total power and the input attenuation will increase from the defaults, if the input power is more than 0 dBm.
Trigger
The
Trigger
key (available under
Mode Setup
,
Trigger
) allows you to:
1. access the
RF Burst (Wideband)
,
Video (IF Envlp)
,
Ext Front
, and
Ext
Rear
trigger source selection menu to specify the triggering conditions for each trigger source
2. modify the default trigger holdoff time using the
Trig Holdoff
key
3. modify the auto trigger time and to activate or deactivate the
Auto
Trigger
feature using the
Auto Trig
key
4. modify the period of the frame timer using the
Frame Timer
key
The actual trigger source is selected separately for each measurement under the
Meas Setup
key.
•
RF Burst (Wideband)
,
Video (IF Envlp)
,
Ext Front,
and
Ext Rear
-
Pressing one of these trigger keys will access each triggering condition setup menu. This menu is used to specify the
Delay
,
Level
, and
Slope
settings for each trigger source as follows:
—
Delay
- Allows you to enter numerical values to modify the delay time. The range is
− 500.000 to +500.000 ms with 1 ns resolution.
For trigger delay, use a positive value; for pre-trigger, use a negative value.
—
Level
- Allows you to enter a numerical value to adjust the trigger level depending on the trigger source selected.
❏ For
RF Burst
selection, the RF level range is
− 25.00 to 0.00 dB with 0.01 dB resolution, relative to the peak RF signal level.
Chapter 2 31
Setting Up the iDEN or WiDEN Mode
Mode
❏ For
Video
selection, the video level range is
− 200.00 to +50.00 dBm with 0.01 dB resolution at the RF input. The realistic range can be down to around
− 40 dBm, depending on the noise level of the signal.
❏ For
Ext Front
or
Ext Rear
selection, the level range is
− 5.00 to
+5.00 V with 1 mV resolution.
—
Slope Pos Neg
- Allows you to toggle the trigger slope between
Pos
at the positive-going edge and
Neg
at the negative-going edge of the burst signal.
Other keys accessed under the
Trigger
menu key:
•
Trig Holdoff
- Allows you to set the period of time before the next trigger can occur. The range is 0.000 to 500 ms with 1
µs resolution.
•
Auto Trig
- Allows you to specify a time for a trigger timeout. The range is 1.0 ms to 10 sec with 1
µs resolution. If no trigger occurs by the specified time, a trigger is automatically generated.
•
Frame Timer
- Allows you to access the
Frame Timer
menu to manually control the frame timer:
—
Period
- Allows you to set the period of the frame clock. The range is 1.000 to 559.0 ms. Finest resolution is 1 ns.
—
Offset
- Allows you to set the frame clock offset from the sync source. The range is 0 to 10 s. Finest resolution is 10 ns.
—
Reset Offset Display
- Allows you to reset the frame clock offset to
0 s.
—
Sync Source
- Allows you to select the source you will use to align the Frame Timer. You may select
Off
(no sync source),
Ext Front
(external front), or
Ext Rear
(external rear).
Trigger Default Settings
RF burst:
Delay
− 25.0 dB
Pos Slope
Video:
Delay
Level
Slope
Ext Front & Ext Rear:
Delay
− 20.00 dBm
Pos
32 Chapter 2
Setting Up the iDEN or WiDEN Mode
Mode
Trigger Default Settings
Level
Slope
Trigger holdoff
Auto trigger
Frame timer:
Period
Offset
Pos
20.00 ms
100.0 ms, Off
Off
Changing the Frequency Channel
After selecting the desired mode setup, you will need to select the desired center frequency. Press
FREQUENCY Channel, Center Freq
and enter a frequency that corresponds to the desired RF channel to be measured.This is the current instrument center frequency for any measurement function.
When the iDEN or WiDEN mode is selected, the instrument will default to
806 MHz.
Chapter 2 33
NOTE
Setting Up the iDEN or WiDEN Mode
Installing Optional Measurement Personalities
Installing Optional Measurement
Personalities
When you install a measurement personality, you need to follow a three step process:
1. Determine whether your memory capacity is sufficient to contain all the options you want to load. If not, decide which options you want to install now, and consider upgrading your memory. Details follow in
“Do You Have Enough Memory to Load All Your Personality
.
2. Install the measurement personality firmware into the instrument memory. Details follow in
“Loading an Optional Measurement
3. Enter a license key number that activates the measurement
personality. Details follow in “Obtaining and Installing a License
.
Adding measurement personalities requires the purchase of a retrofit kit for the desired option. The retrofit kit contains the measurement personality firmware and an entitlement certificate that is used to generate a license key from the internet website. A separate license key is required for each option on a specific instrument serial number and host ID.
For the latest information on Agilent Spectrum Analyzer options and upgrade kits, visit the following Internet URL: http://www.agilent.com/find/sa_upgrades
Do You Have Enough Memory to Load All Your
Personality Options?
If you want to operate the instrument with four or less personality options installed, you can skip ahead to the next section,
Optional Measurement Personality” on page 37 . If, after installing your
options, you get error messages relating to memory issues, you can return to this section to learn more about how to optimize your configuration.
If you want to install your 5th or 6th option, you should check to see how much memory you have installed.
When you install a firmware package, the installation program will tell you if you have enough memory to install the options you select.
If you have 64 MBytes of memory installed in your instrument, you should have ample memory to install six optional personalities, with
34 Chapter 2
Setting Up the iDEN or WiDEN Mode
Installing Optional Measurement Personalities
plenty of memory to spare for data and states.
If you have less than 64 MBytes of installed memory, depending how much data you save, you are unlikely to have any memory issues until you want to install your 4th or 5th option. If this is the case, you can either swap the applications in/out of memory as needed, or you can upgrade your hardware to 64 MBytes of memory.
To see the size of your installed memory for E4406A Transmitter
Testers:
1. Press
System
,
More
,
More
.
2. Read the
File System
Key - The total of the entries for Used and Free memory will total the installed flash memory, either 48 or 64
MBytes.
If you have 48 MBytes of memory, and you want to install more than 3 optional personalities, you may need to manage your memory resources. The following section,
, will help you decide how to configure your installed options to provide optimal operation.
How to Predict Your Memory Requirements
If you plan to install many optional personalities, you should review your memory requirements, so you can determine whether you have enough memory. There is an Agilent “Memory Calculator” available online that can help you do this, or you can make a calculated approximation using the information that follows. You will need to know your instrument’s installed memory size as determined in the previous section and then select your desired applications.
For E4406A see: http://sa.tm.agilent.com/E4406A/memory/
Select the “Memory Calculator” link. You can try any combination of available personalities to see if you desired configuration is compatible with your installed memory.
When you install a firmware package, the installation program will also tell you if you have enough memory to install the options you select.
You can manually estimate your total memory requirements by adding up the memory allocations described in the following steps. The compare the desired total with the available memory that you identified in the previous section.
1. Program memory - Select option requirements from the table
“Measurement Personality Options and Memory Required” on page 36 .
2. Screens - .gif files need 20-25 kB each.
3. State memory - State file sizes range from 21 KB for SA mode to 40
Chapter 2 35
TIP
Setting Up the iDEN or WiDEN Mode
Installing Optional Measurement Personalities
KB for W-CDMA. The state of every mode accessed since power-on will be saved in the state file. File sizes can exceed 150 KB each when several modes are accessed, for each state file saved.
State memory retains settings for all states accessed before the
Save
State
command. To reduce this usage to a minimum, reduce the modes accessed before the
Save State
is executed.
Measurement Personality Options and Memory Required
Personality Options a
(for E4406A Transmitter Tester)
Option File Size
(E4406A Rev: A.08)
cdmaOne measurement personality
NADC and PDC measurement personalities (not available separately)
W-CDMA or W-CDMA w/ HSDPA measurement personality cdma2000 or cdma2000 w/ 1xEV-DV measurement personality
1xEV-DO measurement personality
BAC
BAE
BAF,
210
B78, 214
2.00 Mbytes b
GSM (with EDGE) measurement personality
Shared measurement library
GSM measurement personality
204
202
n/a
5.68 Mbytes
BAH
EDGE (with GSM) measurement personality
EDGE upgrade from BAH measurement personality iDEN measurement personality
202
252
HN1
n/a (hardware only) Baseband I/Q Inputs
B7C
a. Available as of the print date of this guide.
b. Many VSA E4406A personality options use a 5.68 MByte shared measurement library. If you are loading multiple personalities that use this library, you only need to add this memory allocation once.
Memory Upgrade Kits
The VSA 64 MByte Memory Upgrade kit p/n is E4406AU Option ANE.
For more information about memory upgrade kits contact your local sales and service office, or see:
36 Chapter 2
NOTE
NOTE
Setting Up the iDEN or WiDEN Mode
Installing Optional Measurement Personalities
http://www.agilent.com/find/sa_upgrades
Loading an Optional Measurement Personality
You must use a PC to load the desired personality option into the instrument memory. Loading can be done from a firmware CD-ROM or an internet location. An automatic loading program comes with the files and runs from your PC.
You can check the Agilent internet website for the latest firmware versions available for downloading:
For VSA, see http://www.agilent.com/find/vsafirmware
When you add a new option, or update an existing option, you will get the updated versions of all your current options as they are all reloaded simultaneously. This process may also require you to update the instrument core firmware so that it is compatible with the new option.
Depending on your installed hardware memory, you may not be able to fit all of the available measurement personalities in instrument memory at the same time. You may need to delete an existing option file from memory and load the one you want. Use the automatic update program that is provided with the files. Refer to the table showing
“Measurement Personality Options and Memory Required” on page 36
.
The approximate memory requirements for the options are listed above.
These numbers are worst case examples. Some options share components and libraries, therefore the total memory usage of multiple options may not be exactly equal to the combined total.
Obtaining and Installing a License Key
If you purchase an optional personality that requires installation, you will receive an “Entitlement Certificate” which may be redeemed for a license key specific to one instrument. Follow the instructions that accompany the certificate to obtain your license key.
To install a license key number for the selected personality option, use the following procedure:
You can also use this procedure to reinstall a license key number that has been deleted during an uninstall process, or lost due to a memory failure.
1. Press
System
,
More
,
More
,
Install
,
Choose Option
to accesses the alpha editor. Use this alpha editor to enter letters (upper-case), and the front-panel numeric keys to enter numbers for the option designation. You will validate your option entry in the active function area of the display. Then, press
Done
.
Chapter 2 37
NOTE
NOTE
NOTE
Setting Up the iDEN or WiDEN Mode
Installing Optional Measurement Personalities
Before you enter the license key for the EDGE Retrofit Option 252, you must already have entered the license key for the GSM Option BAH.
2. Press
License Key
to enter the letters and digits of your license key.
You will validate your license key entry in the active function area of the display. Then, press
Done
.
3. Press the
Install Now
key. The message “New option keys become active after reboot.
” will appear, along with the
Yes
or
No
menu: press
Yes
and cycle the instrument power off and then on to complete your installation process, or press
No
to cancel the installation process.
Viewing a License Key
Measurement personalities purchased with your instrument have been installed and activated at the factory before shipment. The instrument requires a License Key unique to every measurement personality purchased. The license key number is a hexadecimal number specific to your measurement personality, instrument serial number and host ID.
It enables you to install, or reactivate that particular personality.
Use the following procedure to display the license key number unique to your personality option that is already installed in your instrument:
For E4406A:
Press
System
,
More
,
More
,
Install
,
Choose Option
to enter the letters/numbers for the option you want. You can see the key on the
License Key
key. Press
Done
.
You will want to keep a copy of your license key number in a secure location. Press
System
,
More
, then
Show System
for E4406A, and print out a copy of the display that shows the license numbers. If you should lose your license key number, call your nearest Agilent Technologies service or sales office for assistance.
Using the Uninstall Key on E4406A
This key will make the option unavailable for use, but will not delete it from memory. The message “Application Not Licensed” will appear in the Status/Info bar at the bottom of the display. Record the 12-digit license key number for the option before you delete it. If you want to use that measurement personality later, you will need the license key number to reactivate the personality firmware.
Using the
Uninstall
key does not remove the personality firmware from the instrument memory, and does not free memory to be available to install another option. If you need to free memory to install another option, refer to the instructions for loading firmware updates available
38 Chapter 2
Setting Up the iDEN or WiDEN Mode
Installing Optional Measurement Personalities
at the URL: http://www.agilent.com/find/vsa/
1. Press
System
,
More
,
More
,
Uninstall
,
Choose Option
to access the alpha editor. Use this alpha editor to enter the letters (upper-case), and the front-panel numeric keys to enter the numbers (if required) for the installed option. You will validate your option entry in the active function area of the display. Then, press the
Done
key.
2. Pressing the
Uninstall Now
key will activate the
Yes
or
No
menu: press
Yes
to continue your uninstall process, or press
No
to cancel the uninstall process.
3. Cycle the instrument power off and then on to complete the uninstall process.
Ordering Optional Measurement Personalities
When you order a personality option, you will receive an entitlement certificate. You will need to go to the Web site to redeem your entitlement certificate for a license key. You will need to provide your instrument serial number, host ID, and entitlement certificate number.
Front Panel Key Path: Required Information:
Model #: (Ex. E4406A)
Host ID:
__________________
Instrument
Serial Number:
__________________
System
,
Show System
System
,
Show System
Chapter 2 39
Setting Up the iDEN or WiDEN Mode
Installing Optional Measurement Personalities
40 Chapter 2
3
Making iDEN or WiDEN
Measurements
41
Making iDEN or WiDEN Measurements
iDEN or WiDEN Measurements
iDEN or WiDEN Measurements
Once you have selected the iDEN or WiDEN mode, the following measurements are available by pressing
MEASURE
.
Adjacent Channel Power (ACP) [iDEN or WiDEN] –
Bit Error Rate (BER) [iDEN or WiDEN] – page 54
MotoTalk Average Power (MT Avg Pwr) [iDEN] – page 69
MotoTalk Transient EVM (MT Trans EVM) [iDEN] –
Occupied Bandwidth (OBW) [iDEN or WiDEN] –
Power Versus Time Measurement (PVT) [iDEN or WiDEN] – page
Spectrum (Frequency Domain) Measurements [iDEN or WiDEN] –
Waveform (Time Domain) Measurements [iDEN or WiDEN] – page
This chapter includes information on:
•
Meas Control
keys in
•
Meas Setup
keys to change parameters common to many iDEN
measurements in “Measurement Setup” on page 44
• ACP
Meas Setup
keys in
“Making the Adjacent Channel Power
• BER
Meas Setup
keys in
“Making the Bit Error Rate Measurement” on page 54
• MT Avg Pwr
Meas Setup
keys in
Power (MT Avg Pwr) Measurement” on page 69
• MT Trans EVM
Meas Setup
keys in “Making the MotoTalk Transient
EVM (MT Trans EVM) Measurement” on page 75
• PVT
Meas Setup
keys in “Making the Power Versus Time
• OBW
Meas Setup
keys in
“Making the Occupied Bandwidth
• Spectrum
Meas Setup
keys in
“Making the Spectrum (Frequency
Domain) Measurement” on page 80
• Waveform
Meas Setup
keys in “Making the Waveform (Time Domain)
These are referred to as one-button measurements. When you press the key to select the measurement it will become the active measurement, using settings and a display unique to that measurement. Data acquisitions will automatically begin, provided trigger requirements, if any, are met.
42 Chapter 3
NOTE
Making iDEN or WiDEN Measurements
Preparing for Measurements
Preparing for Measurements
If you want to set the iDEN mode to a known, factory default state, press
Preset
. This will preset the mode setup and all of the measurements to the factory default parameters.
Pressing the
Preset
key does not change the instrument mode.
To preset only the settings that are specific to the selected measurement, press
Meas Setup
,
More
,
Restore Meas Defaults
. This will set the measurement setup parameters, for the currently selected measurement only, to the factory defaults.
Initial Setup
Before making a measurement, make sure the
Mode
setup and
FREQUENCY Channel
parameters are set to the desired settings. Refer to
“Changing the Mode Setup” on page 28 and
.
How to Make a Measurement
Follow the three-step process shown in the following table:
Step Primary Key
1. Select & setup a mode
MODE
2. Select & setup a measurement
MEASURE
3. Select & setup a view
View/Trace
Setup Keys Related Keys
Mode Setup
,
Input
,
FREQUENCY Channel
System
Meas Setup Meas Control
,
Restart
SPAN X Scale,
AMPLITUDE Y Scale
,
Next Window
,
Zoom
File
,
Save
,
,
Print Setup
,
Marker
,
Search
Measure Control
The
Meas Control
front panel key controls processes that affect the running of the current measurement.
•
Measure
menu key. Press
Meas Control
,
Measure
(not to be confused with the front panel
MEASURE
key which has a different function) to toggle between
Single
and
Cont
(continuous) measurement states.
When set to
Single
, the measurement will continue until it has reached the specified number of averages set by the average counter.
When set to
Cont
, the measurement will run continuously, and perform averaging according to the current average type (repeat or exponential). The default setting is
Cont
.
Chapter 3 43
Making iDEN or WiDEN Measurements
Preparing for Measurements
•
Pause
key. Press
Meas Control
,
Pause
to pause the current measurement. Once toggled, the label of the
Pause
key changes to
Resume
. The
Resume
key, once pressed, continues the active measurement from the point at which it was paused.
•
Restart
key. Press
Restart
, under the
Meas Control
menu, or press the front-panel
Restart
key to repeat the current measurement from the beginning, while retaining the current measurement settings.
Measurement Setup
The
Meas Setup
key accesses features that enable you to adjust parameters of the current measurement, such as resolution bandwidth.
You will also use the
Meas Setup
menu to access the
Meas Type
,
Trig
Source
,
Offs & Limits
, and
Advanced
measurement setup features.
The following measurement setup features can be used with some or all measurements.
•
Res BW
key. Press
Meas Setup
,
Res BW
to change the resolution of a given measurement. Selection of a narrower bandwidth will result in a longer data acquisition time.
•
% Power
key. Press
Meas Setup
,
% Power
to choose the percentage of the total channel power that you want to measure. The bandwidth of that amount of power will be measured. This selection is only for occupied bandwidth measurements.
•
Frames
(iDEN) key. Press
Meas Setup
,
Frames
to choose the number of frames that you want to measure bit error rate for. This selection is only for bit error rate measurements.
•
Slots
(WiDEN) key. Press
Meas Setup
,
Slots
to choose the number of slots that you want to measure bit error rate for. This selection is only for bit error rate measurements.
•
Meas Type
key. Press
Meas Setup
,
Meas Type
to choose to measure the total power or the power spectral density. This selection is only for adjacent channel power measurements.
•
Limit Test
key. Press
Meas Setup
,
Limit Test
to turn limit testing
On
or
Off
. The limits that you want to test against can be selected.
•
Restore Meas Defaults
key. To preset only the settings that are specific to the selected measurement, press
Meas Setup
,
More
,
Restore Meas
Defaults
. This will set the measurement setup parameters, for the currently selected measurement only, to the factory defaults.
Averaging
Selecting one of the averaging keys in the
Meas Setup
menu allows you to modify the number, averaging mode, and type of averaging you use for the currently selected measurement.
44 Chapter 3
Making iDEN or WiDEN Measurements
Preparing for Measurements
•
Avg Number
- Allows you to change the number of N averages to be used when making the measurement.
•
Avg Mode Exp Repeat
- Allows you to choose either exponential or repeat averaging. This selection only effects the averaging after the number of N averages is reached (set using the
Avg Number
key).
— Single measurements: Normal (linear) averaging is always used until the specified number of N averages is reached. When
Measure
is set at
Single
, data acquisitions are stopped when the number of averages is reached for a single measurement. Thus,
Avg Mode
has no effect on single measurements.
— Exponential averaging: When
Measure
is set to
Cont
, data acquisitions will continue indefinitely. After N averages, exponential averaging is used with a weighting factor of N (the displayed average count stops at N). Exponential averaging weights new data more than old data, which allows tracking of slow-changing signals. The weighting factor N is set using
Averages
,
Avg Bursts
, or
Avg Number
.
— Repeat averaging: When
Measure
is set to
Cont
, data acquisitions will continue indefinitely. After N averages is reached, all previous result data is cleared and the average count is set back to 1. This is equivalent to being in
Measure Single
and pressing the
Restart
key each time the Single measurement finishes.
Trig Source
Changing the selection in the
Trig Source
menu alters the trigger source for the selected measurement only. Not all of the selections are available for all measurements. Note that the
RF Burst (Wideband)
,
Video (IF Envlp)
,
Ext Front
, and
Ext Rear
menu keys found in the
Trigger
menu enable you to change settings to modify the
Delay
,
Level
, and
Slope
for each of these trigger sources. Choose one of the following trigger sources:
•
Free Run (Immediate)
- The trigger occurs at the time the data is requested, completely asynchronous to the RF or IF signal.
•
RF Burst (Wideband)
- An internal wideband RF burst trigger that has an automatic level control for burst signals. It triggers on a level that is relative to the peak of the signal passed by the RF (12 MHz bandwidth).
Chapter 3 45
Making iDEN or WiDEN Measurements
Preparing for Measurements
•
Video (IF Envlp)
- Provides an internal IF envelope trigger. It triggers on an absolute threshold level of the signal passed by the IF.
•
Ext Front
- Activates the front panel external trigger input (
EXT
TRIGGER INPUT
). The external trigger must be a signal between
− 5 and +5 volts.
•
Ext Rear
- Activates the rear panel external trigger input (
TRIGGER
IN
). The external trigger must be a signal between
− 5 and +5 volts.
•
Frame
- Uses the internal frame clock to generate a trigger signal.
The clock parameters are controlled under the
Mode Setup
key or the measurement firmware, not both. See the specific measurement for details.
•
Line
- Activates an internal line trigger. Sweep triggers occur at intervals synchronized to the line frequency.
Rear panel
TRIGGER 1 OUT
and
TRIGGER 2 OUT
connectors are coupled to the selected trigger source. These trigger outputs are always on the rising edge with a pulse width of at least 1
µs.
46 Chapter 3
Making iDEN or WiDEN Measurements
Making the Adjacent Channel Power Measurement
Making the Adjacent Channel Power
Measurement
Mode Availability
This measurement is available in the iDEN and WiDEN mode.
Purpose
To maintain a quality call by avoiding channel interference, it is quite important to measure and reduce an adjacent channel leakage power transmitted from a mobile phone. The characteristics of adjacent channel leakage power are mainly determined by the transmitter design, particularly the low-pass filter.
Adjacent channel leakage power is defined by the iDEN standard as the total power within the bandwidth of ±10 kHz, centered at 25 kHz offset from the carrier frequency.
Measurement Method
This measurement analyzes the total power levels within the defined bandwidth of ±10 kHz at given frequency offsets on both sides of the carrier frequency using Fast Fourier Transform (FFT).
The total peak power is measured, using a resolution bandwidth
(automatically set) much narrower than the channel bandwidth, through the entire iDEN bandwidth of 18 kHz. Both the absolute power levels and the power levels relative to the center power band are displayed.
The measurement functions, such as averaging, trigger source, limit test, offsets and limits, need to be set up to make a measurement and establish pass or fail testing.
The PvT results are based on the slot power envelope relative to a power mask. During the slot off time the mask is the higher power of
– 54 dBm or – 60 dBc (where dBc is power relative to the composite carrier power). When the composite carrier power is above 6 dBm, the relative limit for slot off time will be used. Otherwise, the absolute limit will be used.
When the absolute limit is used, it is important to be careful with these two aspects of the measurement:
1. Minimize the amount of external attenuation between the radio and the instrument. This will improve the dynamic range of the measurement. For the best possible dynamic range, change the instrument’s
RF Input Range
setting to
Man
and then manually range
Chapter 3 47
NOTE
NOTE
Making iDEN or WiDEN Measurements
Making the Adjacent Channel Power Measurement
the instrument using the
Input Atten
setting. Both of these menu keys are under the
Input
key.
2. Make sure that the instrument
External RF Attenuation
(under the
Input
key) is set to the actual amount of external attenuation used.
This ensures that the power mask is set properly in the slot off time.
The composite carrier power is below 6 dBm when the radio power cutback is greater than approximately 14 dB.
Making the Measurement
The factory default settings provide an iDEN compliant measurement.
For special requirements, you may need to change some of the settings.
Press
Meas Setup
,
More
,
Restore Meas Defaults
at any time to return all parameters for the current measurement to their default settings.
Select the desired center frequency as described in “Changing the
Frequency Channel” on page 33 .
Press
Mode Setup
,
Radio
,
Inb Slot Format
to select the signal format.
Except for Full Slot Reserved, press
Color Code
to enter a number from
0 to 95 for the color code.
Press
MEASURE
,
ACPR
to immediately make an adjacent channel power measurement.
To change any of the measurement parameters from the factory default values, refer to the
“Changing the Measurement Setup”
section for this measurement.
Results
The following figure shows an example result of adjacent channel power measurements in the bar graph window. The power levels at both sides of the carrier frequency are displayed in the graphic window and text window.
48 Chapter 3
Figure 3-1
Making iDEN or WiDEN Measurements
Making the Adjacent Channel Power Measurement iDEN Adjacent Channel Power Measurement Result
Figure 3-2 WiDEN Adjacent Channel Power Measurement Result - All
Carrier Configurations Except 50 kHz Outer
Figure 3-3 WIDEN Adjacent Channel Power Measurement Result - Carrier
Chapter 3 49
Making iDEN or WiDEN Measurements
Making the Adjacent Channel Power Measurement
Configuration of 50 kHz Outer
Changing the Measurement Setup
Table 3-1 shows the factory default settings for adjacent channel power
measurements.
50 Chapter 3
Table 3-1
Making iDEN or WiDEN Measurements
Making the Adjacent Channel Power Measurement
Adjacent Channel Power Measurement Defaults
Measurement
Parameter
Average number
Average mode
Trigger source
Limit Test
Reference BW
Offset frequency
Offset bandwidth
Absolute limit
Fail (iDEN) /
Composite Fail (WiDEN)
Relative limit (carrier)
Relative limit (PSD)
10.000 kHz
0.00 dBm
Relative
Factory Default Condition iDEN
20, On
Exponential
RF burst (inbound)
On
18 kHz
25.000 kHz
WiDEN
20, On
Exponential
RF burst (inbound)
On
Dependent on the carrier configuration
Dependent on the carrier configuration
18.000 kHz
0.00 dBm
Relative
− 60 dBc
− 57.45 dB
− 50 dBc
N/A
Make sure the adjacent channel power measurement is selected under the
Measure
menu. The
Meas Setup
key accesses the menu that allows you to modify the average number, average mode and trigger source for this measurement as described in
“Measurement Setup” on page 44 .
However, the trigger source does not include
Video
or
Line
. In addition, the following parameters for adjacent channel power measurements can be modified:
•
Limit Test
- Allows you to toggle the limit test function between
On
and
Off
. If set to
On
,
Abs Lim
or
Rel Lim
or both need to be specified to execute Pass or Fail tests with the logical judgement under the
Fail
key (iDEN) or
Comp Fail
key (WiDEN). Pass or Fail results are shown in the active display window with the number of averages. In the text window, a red character F is shown on the right side of each measurement result, either relative or absolute, if it exceeds the limits with its logical judgement.
•
Ref BW
- Allows you to enter a reference bandwidth ranging from
1.00 kHz to 5.00000 MHz with the best resolution of 1 Hz. When this parameter is changed, the Total Pwr Ref in the summary data window changes to that value.
•
Offs & Limits
- Allows you to access the menu to change the following parameters for Pass or Fail tests:
Chapter 3 51
Making iDEN or WiDEN Measurements
Making the Adjacent Channel Power Measurement
—
Offset Freq
- Allows you to store a frequency offset value. For iDEN the offset for the measurement is specified as 25 kHz. The offset selection is shown on the key label.
—
Offset BW
- Allows you to select the bandwidth of the carrier and offset channels that you want to measure.
—
Abs Limit
- Allows you to enter an absolute limit value ranging from
− 200.00 to +50.00 dBm with 0.01 dB finest resolution.
—
Fail
- Allows you to access the following menu to select one of the logic keys for fail conditions between the measurement results and the test limits:
❏
AND
- Fail is shown if one of the relative ACP measurement results is larger than
Rel Lim
AND the absolute ACP measurement result is larger than
Abs Limit
.
❏
OR
- Fail is shown if one of the relative ACP measurement results is larger than
Rel Lim
OR one of the absolute ACP measurement results is larger than
Abs Limit
.
❏
Absolute
- Fail is shown if one of the absolute ACP measurement results is larger than
Abs Limit
.
❏
Relative
- Fail is shown if one of the relative ACP measurement results is larger than
Rel Lim
.
—
Rel Lim (Car)
- Allows you to enter a limit value, relative to the carrier, ranging from
− 150.00 to +50.00 dB with 0.01 dB finest resolution.
—
Rel Lim (PSD)
- Allows you to enter a limit value, relative to the power spectral density, ranging from
− 150.00 to +50.00 dB with
0.01 dB finest resolution.
52 Chapter 3
Making iDEN or WiDEN Measurements
Making the Adjacent Channel Power Measurement
Troubleshooting Hints
This adjacent channel power ratio measurement can reveal degraded or defective parts in the transmitter section of the UUT. The following examples are those areas to be checked further.
• Some faults in the DC power supply control of the transmitter power amplifier, RF power controller of the pre-power amplifier stage, or
I/Q control of the baseband stage
• Some degradation in the gain and output power level of the amplifier due to the degraded gain control or increased distortion or both
• Some degradation of the amplifier linearity and other performance characteristics
Power amplifiers are one of the final stage elements of a base or mobile transmitter and are a critical part of meeting the important power and spectral efficiency specifications. Since ACP measures the spectral response of the amplifier to a complex wideband signal, it is a key measurement linking amplifier linearity and other performance characteristics to the stringent system specifications.
Chapter 3 53
Making iDEN or WiDEN Measurements
Making the Bit Error Rate Measurement
Making the Bit Error Rate Measurement
Mode Availability
This measurement is available in the iDEN and WiDEN mode.
Purpose
The BER test lets you test for bit errors in your iDEN or WiDEN signal.
BER is the ratio of the number of bits failed to the number of bits tested. Prepare to run the iDEN or WiDEN BER test by first reviewing the information in
Chapter 2, “Setting Up the iDEN or WiDEN Mode,” on page 27
.
Measurement Method
The iDEN BER test takes data from the RF input and performs analysis on that data to find bit errors. It measures BER on all four channels.
The WiDEN BER test takes data from the RF input and performs analysis on that data to find errors per carrier, which consist of multiple-carrier signals. It measures BER on all subcarriers of all carriers. The BER test searches for the slot that contains data. When one slot is found, BER test searches if more active slots exist in the captured signal. The timing of slots is estimated by timing of the slot found first.
The
Frames
or
Slots
menu key determines the number of 90 millisecond or 45 millisecond frames (iDEN) or 15 millisecond slots (WiDEN)
(dependent on the signal format) that the BER test demodulates. Since each frame has multiple slots, the BER test searches for the slot that contains data. If the data in that slot matches one of the 16 transmission unit data words defined by iDEN, the BER test displays the number of the WORD that it found. If not, the slot is considered having 50% bit error. The number of frames that were actually found is indicated.
The peak and RMS EVMs of each sub-channel, as well as the composite
RMS EVM of all channels, are calculated and can be obtained using
SCPI remote commands.
This measurement can also perform the Power versus Time (PvT) test.
Results can be obtained using SCPI remote commands.
The PvT results are based on the slot power envelope relative to a power mask. During the slot off time, the mask is the higher power of
–54 dBm or –60 dBc (where dBc is power relative to the composite carrier power). When the composite carrier power is above 6 dBm, the
54 Chapter 3
NOTE
NOTE
Making iDEN or WiDEN Measurements
Making the Bit Error Rate Measurement
relative limit for slot off time will be used, otherwise the absolute limit will be used.
When the absolute limit is used, it is important to be careful with these two aspects of the measurement:
1. Minimize the amount of external attenuation between the radio and the instrument. This will improve the dynamic range of the measurement. For the best possible dynamic range change the instrument’s
RF Input Range
setting to
Man
and then manually range the instrument using the
Input Atten
setting. Both of these menu keys are under the
Input
key.
2. Make sure that the instrument
External RF Attenuation
(under the
Input
key) is set to the actual amount of external attenuation used.
This ensures that the power mask is set properly in the slot off time.
The composite carrier power is below 6 dBm when the radio power cutback is greater than approximately 14 dB.
Making the Measurement
The factory default settings provide an iDEN compliant measurement.
For special requirements, you may need to change some of the settings.
Press
Meas Setup
,
More
,
Restore Meas Defaults
at any time to return all parameters for the current measurement to their default settings.
Press
Mode Setup
,
Radio
,
Inb Slot Format
to select the signal format.
Except for Full Slot Reserved, press
Color Code
to enter a number from
0 to 95 for the color code.
Press
MEASURRE
,
BER
to immediately make a Bit Error Rate measurement. The Bit Error Rate will be measured on all four channels. To change any of the measurement parameters from the factory default values, refer to the
Meas Setup
key and the “Changing the Measurement Setup” section for this measurement.
Results
By default, the iDEN BER test displays two traces. The BER test also displays the following results at the bottom of the display:
• Bit Error Rate, shown as a percentage total for all frames
• Current frame BER, shown as a percentage
• Residual BER, which is the Bit Error Rate not counting the dropped frames, shown as a percentage
• Bits tested, which is the number of bits tested
• Bits failed, which is the number of bits that failed
Chapter 3 55
Making iDEN or WiDEN Measurements
Making the Bit Error Rate Measurement
• Frames found
• Frames tested
• Frame Erasure Rate (FER), shown as a percentage of frames dropped over frames tested
• Current identified word
By default, the WiDEN BER measurement displays a single tabular window. This window shows the following:
• Detected or selected carrier configuration
• Total Bit Error Rate of composite carriers, shown as a percentage
• Residual BER of composite carriers, which is the Bit Error Rate not counting the dropped slots, shown as a percentage
• Slot Erasure Ratio (SER), shown as a percentage
• Bits tested, which is the number of bits tested
• Bits failed, which is the number of bits that failed
• Slots found
• Slots tested
• BER, Res BER, and SER of each carrier, shown as percentages
• Relative Power of each carrier, where the power of each carrier relative to the composite burst power is shown in dB and can be obtained by using the SCPI command:
MEASure|READ|FETCh:BER10?
The BER test computes the bit error rate as follows:
Equation 3-1 Bit Error Rate Calculation
BER (%)
=
Number of bits failed
Number of bits tested
×
100%
The results, from all frames that were tested, are shown. It also shows the number of frames successfully demodulated and the number of frames tested.
The BER test changes the results as follows if it cannot demodulate a frame (or when a frame is dropped):
Bits Failed
is increased by half the number of data bits in the frame (not including the sync or pilot symbols). Statistically, a pure noise signal should have a BER of 50%. Bits Tested is increased by the number of data bits in the frame. Found, shows two numbers: the first number shows the number of frames successfully demodulated; the second number shows the number of frames tested. For example,
Found: 4/15 frames
means 15 frames were tested. Of these frames,
56 Chapter 3
Figure 3-4
Making iDEN or WiDEN Measurements
Making the Bit Error Rate Measurement
only 4 were successfully demodulated. The other 11 frames could not be found. The sync, word, or pulse were not found.
Residual BER only counts those frames that are found. In other words, when a frame cannot be found, neither the number of bits failed, nor the number of bits tested increases.
The results use some of the following terminology:
Word is the transmission data unit word that contained the symbol with the bit errors.
Total is the total number of bit errors in the composite symbol.
iDEN Bit Error Rate Measurement Results
Figure 3-5 WiDEN Bit Error Rate Measurement Results
Chapter 3 57
Table 3-2
Making iDEN or WiDEN Measurements
Making the Bit Error Rate Measurement
Changing the Measurement Setup
Frames
determines the number of frames used by each test. The default is 16.
Bit Error Rate Measurement Defaults
Measurement
Parameter
Factory Default Condition iDEN
16
WiDEN
16 Frames (iDEN) /
Slots (WiDEN)
Trigger source
Limit Test
Bit error rate
Res BW
Video (IF envelope) Video (IF envelope)
On On
5%
19.531 kHz
5%
Dependent on the carrier configuration
58 Chapter 3
NOTE
Making iDEN or WiDEN Measurements
Making the Occupied Bandwidth Measurement
Making the Occupied Bandwidth
Measurement
Mode Availability
This measurement is available in the iDEN and WiDEN mode.
Purpose
To utilize the limited resource of radio frequency bands to provide as many communication channels as possible, it is critical to measure and control the occupied bandwidth transmitted from a mobile phone. This occupied bandwidth is defined as the frequency bandwidth in which
99% of the total power is measured.
The occupied bandwidth of a mobile phone tends to be improved if its adjacent channel power is reduced. To provide as many channels as possible to meet the increasing number of subscribers, both of these characteristics of a mobile phone need to be measured and analyzed for further performance improvement.
Measurement Method
Occupied Bandwidth is the frequency bandwidth in which 99% of the total power is measured, based on Fast Fourier Transform (FFT) theory.
In the actual measuring process, first the total channel power is measured using a sampling method. Then each power sample is integrated up to 0.5% of the total power from the lowest and highest frequency sides to determine the low and high limit frequencies. The difference derived from these frequencies is the occupied bandwidth.
The measurement functions such as averaging, trigger source, limit test, and limit need to be set up to make a measurement and Pass or
Fail
test. The test results are displayed in the graphic window and in the text window.
Making the Measurement
The factory default settings provide an iDEN or WiDEN compliant measurement. For special requirements, you may need to change some of the settings. Press
Meas Setup
,
More
,
Restore Meas Defaults
at any time to return all parameters for the current measurement to their default settings.
Select the desired center frequency as described in
.
Chapter 3 59
Figure 3-6
Making iDEN or WiDEN Measurements
Making the Occupied Bandwidth Measurement
Press
Mode Setup
,
Radio
,
Inb Slot Format
to select the signal format.
Except for Full Slot Reserved, press
Color Code
to enter a number from
0 to 95 for the color code.
Press
MEASURE
,
Occupied BW
to immediately make the occupied bandwidth measurement. To change any of the measurement parameters from the factory default values, refer to the
section for this measurement.
Results
For iDEN: in the upper window the sampled power distribution is displayed with 0.5% frequency marker lines. The actual measured data of the occupied bandwidth and the total channel power are shown in the lower window.
iDEN Occupied Bandwidth Measurement Results
For WiDEN: in the upper window, the sampled power distribution is displayed with two frequency marker lines. The frequency marker lines denote the occupied power within a specified percentage (default 99%).
The actual measured data of the occupied bandwidth, the total channel power, and the selected or detected carrier configuration are shown in the lower window.
60 Chapter 3
Figure 3-7
Making iDEN or WiDEN Measurements
Making the Occupied Bandwidth Measurement
WiDEN Occupied Bandwidth Measurement Results
WiDEN Trace Display Notations and Numeric Data Table
•
Center
- The “Center” frequency, shown in the lower left of the trace display, is the user-entered center frequency of the instrument.
However, the trace is not centered on this user-entered center frequency; instead, the trace is shown centered around the signal centroid (indicated in the data table section of the display).
•
Centroid Freq
- The “Centroid Freq”, shown in the data table section of the display, is the centroid of the signal and is the center of the trace display.
•
Delta Freq
- The “Delta Freq”, shown in the data table section of the display, is the difference between the signal centroid frequency and the user entered center frequency: F
∆
=
F
Centroid
–
F user entered center
Changing the Measurement Setup
The next table shows the factory default settings for occupied bandwidth measurements.
Chapter 3 61
Table 3-3
Making iDEN or WiDEN Measurements
Making the Occupied Bandwidth Measurement
Occupied Bandwidth Measurement Defaults
Measurement
Parameter
Log Scale
Avg Number
Avg Mode
Trigger Source
% (percent) power
Limit Test
Limit
Factory Default Condition iDEN
10.00 dB/div
10, On
Exponential
Video (IF envelope)
99%
On
20.0 kHz
WiDEN
10.00 dB/div
10, On
Exponential
Video (IF envelope)
99%
On
20.0 kHz
Make sure the occupied bandwidth measurement is selected under the
Measure
menu. The
Meas Setup
key accesses the menu which allows you to modify the averaging and trigger source for this measurement as
described in “Preparing for Measurements” on page 43
. In addition, the following occupied bandwidth measurement parameters can be modified:
•
Limit Test
- Allows you to toggle the limit test function between
On
and
Off
. If set to
On
, the
Limit
key needs to be pressed to specify the limit value. Pass or Fail results are shown in the active display window with the number of averages.
•
Limit
- Allows you to specify the frequency limit value ranging of:
iDEN
WiDEN
10.000 to 60.000 kHz 0.1 kHz resolution.
10.000 to 200.000 kHz 0.1 kHz resolution.
62 Chapter 3
Making iDEN or WiDEN Measurements
Making the Power Versus Time Measurement
Making the Power Versus Time Measurement
Mode Availability
This measurement is available in the iDEN and WiDEN mode.
Purpose
In iDEN inbound, a preamble waveform (referred to as AGC) is transmitted prior to the modulated symbols of the TDM slot. This AGC is used by the base receiver to estimate the power of the TDM slot, and to set AGC attenuation properly. To allow proper TDM slot AGC functionality at the base receiver, the preamble waveform needs to fit into defined time domain characteristics. At the end of the TDM slot, to avoid causing interference to adjacent slots, the transmit power needs to drop below a certain level within a specified time interval.
Measurement Method
The measurement acquires one burst of iDEN signal in the time domain. The acquisition time is determined according to how many bursts should be averaged. Demodulation is performed to find the synchronization and pilot symbols. The start of the transmission is defined as 80
µs. The average power between the peak of the first modulated symbol (t s
) and the peak of the last modulated symbol (t e
) is computed and displayed. This average power is used as the Y reference for the time mask. The modulated symbols, plus 10 symbols on each end, are displayed with the time mask. A Pass or Fail annunciator indicates whether the burst fits into the time mask.
If average is turned on, the measurement captures consecutive
Avg Bursts
frames, and averages them. The RMS average of the average power (transmit power) of all bursts is used as the Y reference for the time mask.
Since the mobile may drift in frequency, the measurement does an automatic carrier estimate before capturing data for demodulation.
Press
Meas Setup
,
Carr Est Time
to enter a “Time Interval between a
Carrier” estimate. To force a carrier estimate every time, set the
Carr Est Time
to 0.0 second. If the phone does not drift in frequency, set the
Carr Est Time
to a large number to avoid performing a carrier estimation. The measurement keeps a timer. Only when the timer expires will the measurement perform a carrier estimation, and then the timer is reset. Use the
Carr Est Time
key to set the timer.
Chapter 3 63
NOTE
Making iDEN or WiDEN Measurements
Making the Power Versus Time Measurement
Making the Measurement
The factory default settings provide a standard compliant measurement. For special requirements, you may need to change settings. Press
Meas Setup
,
More (1 of 2)
,
Restore Meas Defaults
at any time to return all parameters for the current measurement to their default settings.
Press
MEASURE
,
PvT
to activate the Power versus Time measurement.
Press
FREQUENCY Channel
to enter a numeric value for the center frequency.
Press
Mode Setup
,
Radio
,
Inb Slot Format
to select the signal format.
Except for Full Slot Reserved, press
Color Code
to enter a number from
0 to 95 for the color code.
There are four keys that are frequently used to change Power versus
Time measurement settings. These are the
Carr Est Time
,
Avg Bursts
,
Trig Source
, and
Limit Test
keys located in the
Meas Setup
menu.
Press
Avg Bursts
to turn on or off the average status and enter an average number.
Press
Meas Setup
,
Trig Source
. The trigger source determines how the analyzer acquires data. If
RF Burst
or
IF
is selected, the rising edge of a burst will be used to initiate data acquisition. If
Ext Front
or
Ext Rear
is selected, an external known reference in time will be provided for the data acquisition. In such cases, the external trigger is assumed to be near the beginning of the burst, otherwise, set the external trigger delay accordingly to bring the trigger at the rising edge of the burst.
Press
Meas Setup
,
More
,
Advanced
,
Limit Test
to turn on or off comparing the signal to its time mask. The time mask will be displayed regardless of the limit test state.
Results
The views available under the
View/Trace
menu are
Burst
and
Rise & Fall
. See
“Changing the View” on page 68 .
Information shown in the left margin of the displays include:
• ExtAt - This value reflects the
External RF Atten
setting.
• Trig - The
Trigger Source
setting used in the current measurement
The Current Data displayed at the bottom of the Burst and Rise &
Fall views include:
• Current Transmit Pwr (iDEN) - This is the average power between t s
and t e
of the current burst.
• Curr Power (Composite) (WiDEN) - This is the average power
64 Chapter 3
Figure 3-8
Making iDEN or WiDEN Measurements
Making the Power Versus Time Measurement
between t s
and t e
of the current burst for a composite of all carrier.
• SGC Corr - This is a scaling factor determined by the number of carriers and applied to the selected carrier signal power (WiDEN only).
• Avg Transmit Pwr - This is the average of the transmit power of all bursts.
• Time (of first and last symbol) - This is the time of the first (t s
) and last (t e
) modulated symbol in the displayed trace.
• Pt Index (of first and last symbol) - This is the point index of the first and last modulated symbol in the displayed trace.
iDEN Power vs. Time Result - Burst View
Chapter 3 65
Figure 3-9
Making iDEN or WiDEN Measurements
Making the Power Versus Time Measurement iDEN Power vs. Time Result - Rise & Fall View
Figure 3-10 WiDEN Power vs. Time Result - Burst View
66 Chapter 3
Figure 3-11
Making iDEN or WiDEN Measurements
Making the Power Versus Time Measurement
WiDEN Power vs. Time Result - Rise & Fall View
Table 3-4
NOTE
Changing the Measurement Setup
Power vs. Time Measurement Defaults
Measurement
Parameter
Factory Default Condition iDEN
Avg Bursts
Avg Type
16 and Off
Pwr Avg (RMS)
Carrier Estimate Interval 10,000 s
Trig Source Video (Envelope)
Limit Test
Meas Carrier
Advanced
RBW Filter
Res BW
On
N/A
Gaussian
30.000 kHz
16 and Off
Pwr Avg (RMS)
10,000 s
Video (Envelope)
On
All (Composite)
Flat
WiDEN
120.000 kHz
Parameters that are under the
Advanced
key seldom need to be changed. Any changes from the default values may result in invalid measurement data.
Make sure the Power versus Time measurement is selected under the
Measure
menu. The
Meas Setup
key will access a menu which allows you to modify the trigger source and the limit test for this measurement (as
Chapter 3 67
NOTE
Making iDEN or WiDEN Measurements
Making the Power Versus Time Measurement
described in the
“Measurement Setup” on page 44 ). In addition, the
following Power versus Time measurement parameters can be modified:
•
Carr Est Time
- This key allows you to set the time interval between carrier estimations. Values from 0.000000 sec through
200.000000 sec may be entered.
•
Advanced
- Accesses a menu to change the following parameters:
—
RBW Filter
- Chooses the type of filter, either
Gaussian
or
Flat
(Flatop). Gaussian is the best choice when looking at the overall burst or the rising and falling edges, as it has excellent pulse response. If you want to precisely examine just the useful part of the burst, choose
Flat
.
—
Res BW
- Sets the resolution bandwidth (IF bandwidth).
Power versus Time Custom Masks
For the Power versus Time measurement, you can define a user configurable limit mask to apply to the measured burst. Parameters set for the PvT measurement using this feature will also be applied to the
BER measurement when the BER Limit Test is turned on. This feature can only be accessed through SCPI remote commands. Refer to
5, “iDEN Programming Commands,” on page 101
.
Changing the View
The
View/Trace
key accesses a menu that allows you to select the desired view of the measurement from the following selections:
•
Burst
- Views the entire burst of interest as determined by the current trigger source, burst sync, training sequence, and timeslot settings. To view a different burst of interest, you must set these parameters for the selected timeslot. To view multiple slots, use the
Multi-Slot
key. See Figure 3-8 on page 65 .
•
Rise & Fall
- Zooms in on the rising and falling portions of the burst being tested. See
.
The limit test will still be performed on the entire burst (viewed using the
Burst
menu) when
Rise & Fall
is selected.
Troubleshooting Hints
If a transmitter fails the Power versus Time measurement, this usually indicates a problem with the units output amplifier or leveling loop.
68 Chapter 3
NOTE
Making iDEN or WiDEN Measurements
Making the MotoTalk Average Power (MT Avg Pwr) Measurement
Making the MotoTalk Average Power (MT Avg
Pwr) Measurement
Mode Availability
This measurement is available in the iDEN mode.
Purpose
MotoTalk Average Power is used to obtain the average transmit power of normal (traffic) bursts.
Measurement Method
If the
Meas Method
is set to
Burst
, the measurement acquires
Avg Bursts
number of slots, searches all the traffic bursts in the captured data, and computes the average power of each traffic burst. If the number of traffic bursts is less than the
Avg Bursts
(there might be preamble or sync bursts in the captured data), the measurement will acquire more data and repeat the process until the total number of traffic bursts reaches the average count. The average, maximum, and minimum of the average burst power are also reported.
If the
Meas Method
is set to
Gated
, the measurement captures the
Gated Time
number of slots, and computes the average power of the entire data record.
If the
Meas Method
is set to
Gated & Burst
, the measurement captures the
Gated Time
number of slots, computes the average power of the entire data record, then finds all the traffic bursts in the captured data, and computes the average power of each traffic burst. The average, maximum, and minimum of the average traffic burst power are also reported.
There are 3 types of bursts: preamble, sync, and traffic. There are 2 methods to identify them. If the
Burst ID Method
is set to
RF Amptd
, the measurement uses the amplitude variation within a burst and the burst position to identify the type of burst.
If the
Burst ID Method
is set to
Sync Word
, the measurement performs demodulation and uses the sync word to identify the type of burst. The former is faster than the later. For both methods to work well, the
Res BW
should not be set to more than 35 kHz.
Making the Measurement
The factory default parameters provide a good starting point. You will likely want to change some of the settings. Press
Meas Setup
,
More
,
Chapter 3 69
Figure 3-12
Making iDEN or WiDEN Measurements
Making the MotoTalk Average Power (MT Avg Pwr) Measurement
Restore Meas Defaults
at any time to return all parameters for the current measurement to their default settings.
Press
Measure
,
MT Avg Pwr
to immediately make MotoTalk Average
Power the active measurement.
To change any of the measurement parameters from the factory default values, refer to the
“Changing the Measurement Setup”
section for this measurement.
Results
Average Power Measurement Results- RF Envelope Window
Table 3-5
Changing the Measurement Setup
MotoTalk Average Power Measurement Defaults
Measurement Parameter
Average Bursts:
Avg Number
Meas Method:
Gate Time (Sweep Time)
Trigger Source
Burst ID Method
RF Envelope Window:
Amplitude Y Scale
Scale/Div
Reference
Factory Default Condition
20 On
Burst
20 slots
RF Burst
RF Amptd
10.00 dB
0.00 dBm (Top)
70 Chapter 3
Table 3-5
NOTE
Making iDEN or WiDEN Measurements
Making the MotoTalk Average Power (MT Avg Pwr) Measurement
MotoTalk Average Power Measurement Defaults
Factory Default Condition Measurement Parameter
Advanced
Res BW
RBW Filter
Decimation
25.600 kHz
Gaussian
0 Auto
Parameters that are under the
Advanced
key seldom need to be changed. Any changes from the default values may result in invalid measurement data.
Make sure the
MT Avg Pwr
measurement is selected under the
Measure
menu. Press the
Meas Setup
key to access a menu which allows you to modify the trigger source for this measurement (as described in
“Measurement Setup” on page 44 ). In addition, the following
parameters can be modified:
•
Meas Method
- This key allows you to choose the method use in making the measurement. You may set the method to Burst, Gated, or Gated and Burst.
— Burst: When
Meas Method
is set to
Burst
, the measurement acquires the
Avg Bursts
number of slots, searches all the traffic bursts in the captured data, and computes the average power of each traffic burst. If the number of traffic bursts is less than the
Avg Bursts
(there might be preamble or sync bursts in the captured data), the measurement will acquire more data and repeat the process until the total number of traffic bursts reaches the average count. The average, maximum, and minimum of the average burst power are also reported.
— Gated: When
Meas Method
is set to
Gated
, the measurement captures the
Gated Time
number of slots and computes the average power of the entire data record.
— Gated & Burst: When
Meas Method
is set to
Gated & Burst
, the measurement captures
Gated Time
number of slots, computes the average power of the entire data record, then finds all the traffic bursts in the captured data and computes the average power of each traffic burst. The average, maximum, and minimum of the average traffic burst power are also reported.
•
Avg Bursts
- Allows you to toggle the burst averaging function on or off and set the number of N averages to be used when making the measurement. This parameter is effective when
Meas Method
is set to
Burst
.
•
Gated Time
- This key allows you to set the number of slots to capture. Values between 1 to 200 slots can be entered, depending
Chapter 3 71
Making iDEN or WiDEN Measurements
Making the MotoTalk Average Power (MT Avg Pwr) Measurement
upon the resolution bandwidth setting. This parameter is effective when
Meas Method
is set to
Gated
or
Gated & Burst
•
Burst ID Method
- This key allows you to choose one of two methods to identify the type of burst used. The three burst types are preamble, sync, and traffic. The identification methods are RF Amptd and Sync
Word.
—
RF Amptd
: When
Burst ID Method
is set to
RF Amptd
, the measurement uses the amplitude variation within a burst and the burst position to identify the type of burst.
—
Sync Word
: When
Burst ID Method
is set to
Sync Word
, the measurement performs demodulation and use the sync word to identify the type of burst. The former is faster than the later. For both methods to work well, the
Res BW
should not be set to more than 35 kHz.
•
Advanced
menu key. This key accesses the following features:
—
RBW Filter
- This key toggles to select a flat top or a Gaussian resolution bandwidth filter. A Gaussian filter provides more even time domain response, particularly for bursts. A flat top filter provides a flatter bandwidth but is less accurate for pulse responses. A flat top filter also requires less memory and allows longer data acquisition times. For most waveform applications, the Gaussian filter is recommended, and it is the default filter for
Waveform measurements.
—
Res BW
- This key sets the measurement bandwidth. A larger bandwidth results in a larger number of acquisition points and reduces the maximum allowed for sweep time. You can enter values between 1.000 kHz. and 5.00000 MHz.
—
Decimation
- Allows you to toggle the decimation function between
Auto
and
Man
(manual) and to set the decimation value.
Decimation allows longer acquisition times for a given bandwidth by eliminating data points. Long time captures can be limited by the transmitter tester data acquisition memory. Decimation numbers 0 to 4 describe the factor by which the number of points are reduced.
Auto
with a decimation figure of 0 is the default. This results in the firmware deciding the decimation factor.
Using Markers
The front-panel
Marker
key accesses the menu to configure the markers.
•
Select 1 2 3 4
- Allows you to activate up to four markers with the corresponding numbers, respectively. The selected number is underlined and its function is defined by pressing the
Function
key.
The default is 1.
•
Normal
- Allows you to activate the selected marker to read the frequency and amplitude of the marker position on the spectrum trace, for example, which is controlled by the
RPG
knob.
72 Chapter 3
NOTE
Making iDEN or WiDEN Measurements
Making the MotoTalk Average Power (MT Avg Pwr) Measurement
•
Delta
- Allows you to read the differences in frequencies and amplitudes between the selected marker and the next marker.
•
Function Off
- Allows you to define the selected marker function to be
Band Power
,
Noise
, or
Off
. The default is
Off
. If set to
Band Power
, you need to select
Delta
.
•
Trace Spectrum
- Allows you to place the selected marker on the
Spectrum
,
Spectrum Avg
, or
I/Q Waveform
trace. The default is
Spectrum
.
•
Off
- Allows you to turn off the selected marker.
•
Shape Diamond
- Allows you to access the menu to define the selected marker shape to be a
Diamond
,
Line
,
Square
, or
Cross
. The default is a
Diamond
.
•
Marker All Off
- Allows you to turn off all of the markers.
The front panel
Search
key performs a peak search when pressed. A marker will automatically be activated at the highest peak.
In the Waveform measurement, the Mean Pwr (Entire Trace) value plus the Pk-to-Mean value will sum to equal the current Max Pt. value as shown in the data window below the RF Envelope display. If you do a marker peak search (
Search
) with averaging turned off, the marker will find the same maximum point. However, if you turn averaging on, the
Pk-to-Mean
value will use the highest peak found for any acquisition during averaging, while the marker peak will look for the peak of the display, which is the result of N-averages. This will usually result in differing values for the maximum point.
Band Power
A band power measurement using the markers calculates the average power between two adjustable markers. To make a band power measurement:
• Press
Marker
, Function,
Band Power
.
• Two marker lines are activated at the extreme left side of the horizontal scale. Press
Normal
and move marker 1 to the desired place by rotating the
RPG
knob.
• Press
Delta
to bring marker 2 to the same place as marker 1.
• Move marker 1 to the other desired position by rotating the
RPG
knob. Band power measures the average power between the two markers. When the band power markers are active, the results are shown in the results window as Mean Pwr (Between Mks). When the band power function is off, the results window reads Mean Pwr
(Entire Trace)
.
Chapter 3 73
Making iDEN or WiDEN Measurements
Making the MotoTalk Average Power (MT Avg Pwr) Measurement
Troubleshooting Hints
Changes made by the user to advanced waveform settings can inadvertently result in measurements that are invalid and cause error messages to appear. Care needs to be taken when using advanced features.
74 Chapter 3
NOTE
Making iDEN or WiDEN Measurements
Making the MotoTalk Transient EVM (MT Trans EVM) Measurement
Making the MotoTalk Transient EVM (MT
Trans EVM) Measurement
Mode Availability
This measurement is available in the iDEN mode.
Purpose
MotoTalk Transient EVM is used to measure modulation accuracy, carrier offset, and VCO settle time when the frequency is hopping between two frequencies.
Measurement Method
The measurement acquires the
Meas Time
number of slots at the center frequency, then tunes to the second frequency, which is
Center
Frequency + Hop Freq Ofst
, and captures the
Meas Time
number of slots.
The measurement stitches two waveforms together, then demodulates each burst, and computes EVM. For each burst, both the RMS EVM of
270 symbols (excluding 2 windowed symbols at each end) as well as the peak EVM are reported. The average of all bursts EVM and the peak
EVM of all bursts are also reported. To measure regular EVM (no hopping), set the
Hop Freq Ofst
to 0 Hz. The carrier offset is also measured and reported.
Making the Measurement
The factory default parameters provide a good starting point. You will likely want to change some of the settings. Press
Meas Setup
,
More
,
Restore Meas Defaults
at any time to return all parameters for the current measurement to their default settings.
Press
MEASURE
,
MT Trans EVM
to immediately make MotoTalk
Transient EVM the active measurement.
To change any of the measurement parameters from the factory default
values, refer to “Changing the Measurement Setup” section for this
measurement.
Chapter 3 75
Figure 3-13
Making iDEN or WiDEN Measurements
Making the MotoTalk Transient EVM (MT Trans EVM) Measurement
Results
MotoTalk Transient EVM Measurement Results- RF Envelope
Window
Table 3-6
NOTE
Changing the Measurement Setup
MotoTalk Transient EVM Measurement Defaults
Measurement Parameter
Hop Freq Ofst
Meas Time
Trigger Source
RF Envelope Window:
Amplitude Y Scale
Scale/Div
Reference
Advanced
Res BW
RBW Filter
Decimation
Factory Default Condition
0.0 Hz
10 slots
RF Burst
1.0 pcnt
0.00 pcnt (Top)
25.600 kHz
Gaussian
0 Auto
Parameters that are under the
Advanced
key seldom need to be changed. Any changes from the default values may result in invalid measurement data.
Make sure the
MT Trans EVM
measurement is selected under the
76 Chapter 3
Making iDEN or WiDEN Measurements
Making the MotoTalk Transient EVM (MT Trans EVM) Measurement
Measure
menu. Press the
Meas Setup
key to access a menu which allows you to modify the hopping frequency offset, measurement time, and trigger source for this measurement (as described in
). In addition, the following parameters can be modified:
•
Hop Freq Ofst
- This key allows you to set the delta frequency between the hop-to-frequency and the center frequency. Values between 0.0 kHz and 6.00000 MHz can be entered.
•
Meas Time
- This key allows you to select the number of slots to capture. Values between 1 and 200 slots can be entered.
•
Advanced
menu key. This key accesses the following features:
—
RBW Filter
- This key toggles to select a flat top or a Gaussian resolution bandwidth filter. A Gaussian filter provides more even time domain response, particularly for bursts. A flat top filter provides a flatter bandwidth but is less accurate for pulse responses. A flat top filter also requires less memory and allows longer data acquisition times. For most waveform applications, the Gaussian filter is recommended, and it is the default filter for
Waveform measurements.
—
Res BW
- This key sets the measurement bandwidth. A larger bandwidth results in a larger number of acquisition points and reduces the maximum allowed for sweep time. You can enter values between 1.000 kHz. and 1.00000 MHz.
—
Decimation
- Allows you to toggle the decimation function between
Auto
and
Man
(manual) and to set the decimation value.
Decimation allows longer acquisition times for a given bandwidth by eliminating data points. Long time captures can be limited by the transmitter tester data acquisition memory. Decimation numbers 0 to 4 describe the factor by which the number of points are reduced. Auto with a decimation figure of 0 is the default.
This results in the firmware deciding the decimation factor.
Using Markers
The
Marker
front-panel key accesses the menu to configure the markers.
If you want to use the marker function in the I/Q window, press
View/Trace
,
I/Q Waveform
,
Marker
,
Trace
,
IQ Waveform
.
•
Select 1 2 3 4
- Allows you to activate up to four markers with the corresponding numbers, respectively. The selected number is underlined and its function is defined by pressing the
Function
key.
The default is 1.
•
Normal
- Allows you to activate the selected marker to read the frequency and amplitude of the marker position on the spectrum trace, for example, which is controlled by the
RPG
knob.
•
Delta
- Allows you to read the differences in frequencies and amplitudes between the selected marker and the next marker.
Chapter 3 77
NOTE
Making iDEN or WiDEN Measurements
Making the MotoTalk Transient EVM (MT Trans EVM) Measurement
•
Function Off
- Allows you to define the selected marker function to be
Band Power
,
Noise
, or
Off
. The default is
Off
. If set to
Band Power
, you need to select
Delta
.
•
Trace Spectrum
- Allows you to place the selected marker on the
Spectrum
,
Spectrum Avg
, or
I/Q Waveform
trace. The default is
Spectrum
.
•
Off
- Allows you to turn off the selected marker.
•
Shape Diamond
- Allows you to access the menu to define the selected marker shape to be a
Diamond
,
Line
,
Square
, or
Cross
. The default is a
Diamond
.
•
Marker All Off
- Allows you to turn off all of the markers.
The front panel
Search
key performs a peak search when pressed. A marker will automatically be activated at the highest peak.
In the Waveform measurement, the Mean Pwr (Entire Trace) value plus the Pk-to-Mean value will sum to equal the current Max Pt. value as shown in the data window below the RF Envelope display. If you do a marker peak search (
Search
) with averaging turned off, the marker will find the same maximum point. However, if you turn averaging on, the
Pk-to-Mean
value will use the highest peak found for any acquisition during averaging, while the marker peak will look for the peak of the display, which is the result of N-averages. This will usually result in differing values for the maximum point.
Band Power
A band power measurement using the markers calculates the average power between two adjustable markers. To make a band power measurement:
• Press
Marker
,
Function
,
Band Power
.
• Two marker lines are activated at the extreme left side of the horizontal scale. Press
Normal
and move marker 1 to the desired place by rotating the
RPG
knob.
• Press
Delta
to bring marker 2 to the same place as marker 1.
• Move marker 1 to the other desired position by rotating the
RPG
knob. Band power measures the average power between the two markers. When the band power markers are active, the results are shown in the results window as Mean Pwr (Between Mks). When the band power function is off, the results window reads Mean Pwr
(Entire Trace)
.
78 Chapter 3
Making iDEN or WiDEN Measurements
Making the MotoTalk Transient EVM (MT Trans EVM) Measurement
Troubleshooting Hints
Changes made by the user to advanced waveform settings can inadvertently result in measurements that are invalid and cause error messages to appear. Care needs to be taken when using advanced features.
Chapter 3 79
NOTE
Making iDEN or WiDEN Measurements
Making the Spectrum (Frequency Domain) Measurement
Making the Spectrum (Frequency Domain)
Measurement
Mode Availability
This measurement is available in the iDEN and WiDEN mode.
Purpose
The Spectrum measurement provides spectrum analysis capability for the instrument. The control of the measurement was designed to be familiar to those who are accustomed to using swept spectrum analyzers.
This measurement is FFT (Fast Fourier Transform) based. The
FFT-specific parameters are located in the
Advanced
menu. Also available under Basic Mode Spectrum measurements is an I/Q window, which shows the I and Q signals in parameters of voltage and time. The advantage of having an I/Q view available while in the Spectrum measurement is that it allows you to view complex components of the same signal without changing settings or measurements.
Measurement Method
The transmitter tester uses digital signal processing (DSP) to sample the input signal and convert it to the frequency domain. With the instrument tuned to a fixed center frequency, samples are digitized at a high rate, converted to I and Q components with DSP hardware, and then converted to the frequency domain with FFT software.
Making the Measurement
The factory default parameters provide a good starting point. You will likely want to change some of the settings. Press
Meas Setup
,
More
,
Restore Meas Defaults
at any time to return all parameters for the current measurement to their default settings.
Press
MEASURE
, Spectrum (Freq Domain) to immediately make
Spectrum (Frequency Domain) the active measurement.
Press
Mode Setup
,
Radio
,
Inb Slot Format
to select the signal format.
Except for Full Slot Reserved, press
Color Code
to enter a number from
0 to 95 for the color code.
To change any of the measurement parameters from the factory default values, refer to the
“Changing the Measurement Setup”
section for this measurement.
80 Chapter 3
Figure 3-14
Making iDEN or WiDEN Measurements
Making the Spectrum (Frequency Domain) Measurement
Results
A display with both a spectrum window and an I/Q Waveform window will appear when you activate a spectrum measurement. Use the
Next
Window
key to select a window, and the
Zoom
key to enlarge a window.
Spectrum Measurement Result- Spectrum Window
Chapter 3 81
Table 3-7
Making iDEN or WiDEN Measurements
Making the Spectrum (Frequency Domain) Measurement
Changing the Measurement Setup
Spectrum (Frequency Domain) Measurement Defaults
Measurement Parameter
Res BW
Averaging:
Avg Number
Avg Mode
Avg Type
Trigger Source
FFT Window
FFT Size:
Length Control
Min Points/RBW
Window Length
FFT Length
ADC Range
Data Packing
ADC Dither
Decimation
IF Flatness
iDEN
2 kHz
25 On
Exp
Log-Pwr Avg
(Video)
RF Burst
(Wideband)
1.0 ms (Auto) Measurement Time
(Service mode only)
Spectrum Window:
Span
Scale/Div - Amplitude Y Scale
I/Q Waveform Window:
Capture Time
Scale/Div - Amplitude Y Scale
Advanced
Pre-ADC BPF
Pre-FFT Filter
Pre-FFT BW
100.000 kHz
10.00 dB
15.06 ms
60 mV
On
Flat
155.000 kHz
(Auto)
Flat Top (High
AmptdAcc)
Auto
31
706
1024
Auto Peak
Auto
Auto
0 (Auto)
On
Factory Default Condition
WiDEN
8 kHz
25 On
Exp
Log-Pwr Avg
(Video)
RF Burst
(Wideband)
1.0 ms (Auto)
400.000 kHz
10.00 dB
15.06 ms
60 mV
On
Flat
155.000 kHz
(Auto)
Flat Top (High
AmptdAcc)
Auto
31
706
1024
Auto Peak
Auto
Auto
0 (Auto)
On
82 Chapter 3
NOTE
Making iDEN or WiDEN Measurements
Making the Spectrum (Frequency Domain) Measurement
Parameters under the
Advanced
key seldom need to be changed. Any changes from the default advanced values may result in invalid measurement data.
Make sure the
Spectrum (Freq Domain)
measurement is selected under the
Measure
menu. Press the
Meas Setup
key to access a menu which allows you to modify the averaging, and trigger source for this
measurement (as described in “Measurement Setup” on page 44
). In addition, the following parameters can be modified:
•
Span
- Allows you to modify the frequency span. Changing the span causes the bandwidth to change automatically, and will affect data acquisition time.
•
Res BW
- Sets the resolution bandwidth for the FFT, and allows manual or automatic settings. A narrower bandwidth will result in a longer data acquisition time. In Auto mode, the resolution bandwidth is set to Span/50 (2% of the span).
•
Advanced
- The following FFT advanced features should be used only if you are familiar with their operation. Changes from the default values may result in invalid data.
—
Pre-ADC BPF
- This key allows you to toggle the pre-ADC bandpass filter
On
or
Off
. The pre-ADC bandpass filter is useful for rejecting nearby signals, so that sensitivity within the span range can be improved by increasing the ADC range gain.
—
Pre-FFT Fltr
- Allows you to toggle between
Flat
(flat top) and
Gaussian
. The pre-FFT filter defaults to a flat top filter which has better amplitude accuracy. The Gaussian filter has better pulse response.
—
Pre-FFT BW
- The Pre-FFT bandwidth allows you to select between a manual or an automatic setting. The pre FFT- bandwidth filter can be set between 1 Hz and 10 MHz. In Auto mode this bandwidth is nominally 50% wider than the span. This bandwidth determines the ADC sampling rate.
—
FFT Window
- Allows you to access the following selection menu.
Unless you are familiar with FFT windows, use the flat top filter
(the default filter).
❏
Flat Top
- Selects a filter for best amplitude accuracy, by reducing scalloping error.
❏
Uniform
- You can choose to have no window active by using the uniform setting.
❏
Hanning
❏
Hamming
❏
Gaussian
- Selects a gaussian filter with an alpha of 3.5.
❏
Blackman
Chapter 3 83
Making iDEN or WiDEN Measurements
Making the Spectrum (Frequency Domain) Measurement
❏
Blackman Harris
❏
K-B 70 dB / 90 dB/ 110 dB (Kaiser-Bessel)
- Allows selection of
Kaiser-Bessel filters with sidelobes of
− 70, − 90, or − 110 dBc.
—
FFT Size
- This menu contains the following features:
❏
Length Ctrl
- This feature allows you to set the FFT and window lengths either automatically or manually.
❏
Min Pts in RBW
- This feature allows you to set the minimum number of data points that will be used inside the resolution bandwidth. This adjustment is only available if
Length Ctrl
is set to
Auto
.
❏
Window Length
- This feature allows you to enter the FFT window length ranging from 8 to 1048576. This length represents the actual quantity of I/Q samples that are captured for processing by the FFT. This value can only be entered if
Length Ctrl
is set to
Man
(manual).
❏
FFT Length
- This feature allows you to enter the FFT length in the number of captured samples, ranging from 8 to 1048576.
The FFT length setting is automatically limited so that it is equal to or greater than the FFT window length setting. Any amount greater than the window length is implemented by zero-padding. This value can be entered only if
Length Ctrl
is set to
Man
(manual).
—
ADC Range
- Allows you to access the following selection menu to define one of the following ADC ranging functions:
❏
Auto
- Select this to set the ADC range automatically. For most
FFT Spectrum measurements, the
Auto
feature should not be selected. An exception is when measuring a signal which is
“bursty”, in which case auto can maximize the time domain dynamic range, if FFT results are less important to you than time domain results.
❏
Auto Peak
- Select this to set the ADC range automatically to the peak signal level.
Auto Peak
is a compromise that works well for both CW and burst signals.
❏
AutoPeakLock
- Select this to hold the ADC range automatically at the peak signal level.
AutoPeakLock
is more stable than
Auto Peak
for CW signals, but should not be used for “bursty” signals.
❏
Manual
− Allows you to set the ADC range level. Note that manual ranging is best for CW signals.
12 bit Digital IF
The following selection menu is available:
− 6 dB
,
0 dB
,
+6 dB
,
+12 dB
,
+18 dB
,
+24 dB
.
14 bit Digital IF
The following selection menu is available:
84 Chapter 3
Making iDEN or WiDEN Measurements
Making the Spectrum (Frequency Domain) Measurement
None
,
0 dB
,
+6 dB
,
+12 dB
,
+18 dB
.
— Data Packing - Allows you to access the following selection menu to define one of the following data packing methods:
❏
Auto
- Data is automatically packed. This is the default setting and most recommended.
❏
Short (16 bit)
- Data is packed by every 16 bits.
❏
Medium (24 bit)
- Data is packed by every 24 bits.
❏
Long (32 bit)
- Data is packed by every 32 bits.
—
ADC Dither
- Allows you to toggle the ADC dither function between
Auto
,
On
, and
Off
. When set to
Auto
(the default), ADC dither will be activated when a narrow bandwidth is being measured, and deactivated when a wide bandwidth is being measured. “ADC dither” refers to the introduction of noise to the digitized steps of the analog-to-digital converter; the result is an improvement in amplitude accuracy. Use of the ADC dither, however, reduces dynamic range by approximately 3 dB.
—
Decimation
- Allows you to toggle the decimation function between
Auto
and
Man
, and to set the decimation value.
Auto
is the preferred setting, and the only setting that guarantees alias-free
FFT spectrum measurements. If you are familiar with the decimation feature, you can change the decimation value by setting to
Man
, but be aware that aliasing can result in higher values.
—
IF Flatness
- Allows you to toggle between
On
and
Off
. When toggled to
On
(the default), the IF flatness feature causes background amplitude corrections to be performed on the FFT spectrum. The
Off
setting is used for adjustment and troubleshooting the transmitter tester.
Changing the View
View/Trace
menu keys are used to activate a view of a measurement with preset X and Y scale parameters, called a “window”. Using the X and Y Scale keys, you can then modify these parameter settings. You can also activate specific traces using the
Trace Display
menu key.
Windows Available for Spectrum Measurements
The Spectrum and the I/Q windows can be viewed at the same time, or individually. You can use
Next Window
and
Zoom
to move between these different views.
Spectrum
window
− Select this window if you want to view frequency and power. Changes to frequency span or power will sometimes affect data acquisition.
Chapter 3 85
NOTE
Making iDEN or WiDEN Measurements
Making the Spectrum (Frequency Domain) Measurement
I/Q Waveform
window
− Select this window to view the I and Q signal characteristics of the current measurement in parameters of voltage and time.
For the widest spans, the I/Q window becomes just “ADC time domain samples” because the I/Q down-conversion is no longer in effect.
Using Markers
The front-panel
Marker
key accesses the menu to configure the markers.
If you want to use the marker function in the I/Q window, press
View/Trace
,
I/Q Waveform
,
Marker
,
Trace
,
IQ Waveform
.
•
Select 1 2 3 4
− Allows you to activate up to four markers with the corresponding numbers, respectively. The selected number is underlined and its function is defined by pressing the
Function
key.
The default is 1.
•
Normal
− Allows you to activate the selected marker to read the frequency and amplitude of the marker position on the spectrum trace, for example, which is controlled by the
RPG
knob.
•
Delta
− Allows you to read the differences in frequencies and amplitudes between the selected marker and the next marker.
•
Function Off
− Allows you to define the selected marker function to be
Band Power
,
Noise
, or
Off
. The default is
Off
. If set to
Band Power
, you need to select
Delta
.
•
Trace Spectrum
− Allows you to place the selected marker on the
Spectrum
,
Spectrum Avg
, or
I/Q Waveform
trace. The default is
Spectrum
.
•
Off
− Allows you to turn off the selected marker.
•
Shape Diamond
− Allows you to access the menu to define the selected marker shape to be a
Diamond
,
Line
,
Square
, or
Cross
. The default is a
Diamond
.
•
Marker All Off
− Allows you to turn off all of the markers.
The
Search
front-panel key performs a peak search when pressed. A marker will automatically be activated at the highest peak.
Band Power
A band power measurement, using the markers, calculates the average power between two adjustable markers. To make a band power measurement:
• Press
Marker
, Trace
,
Spectrum
to activate a marker on the instantaneous spectrum signal. Press the
Spectrum Avg
key to activate a marker on the average spectrum trace.
86 Chapter 3
Making iDEN or WiDEN Measurements
Making the Spectrum (Frequency Domain) Measurement
• Press
Function, Band Power
.
• Two marker lines are activated at the extreme left side of the horizontal scale. Press
Normal
and move marker 1 to the desired place by rotating the
RPG
knob.
• Press
Delta
to bring marker 2 to the same place as marker 1.
• Move marker 1 to the other desired position by rotating the
RPG
knob. Band power measures the average power between the two markers. When the band power markers are active, the results are shown in the results window as Mean Pwr (Between Mks). When the band power function is off, the results window reads Mean Pwr
(Entire Trace)
.
Troubleshooting Hints
Changes made by the user to advanced spectrum settings, particularly to ADC range settings, can inadvertently result in Spectrum measurements that are invalid and cause error messages to appear.
Care needs to be taken when using advanced features.
Chapter 3 87
NOTE
Making iDEN or WiDEN Measurements
Making the Waveform (Time Domain) Measurement
Making the Waveform (Time Domain)
Measurement
Mode Availability
This measurement is available in the iDEN and WiDEN mode.
Purpose
The Waveform measurement is a generic measurement for viewing waveforms in the time domain. This measurement is how the instrument performs the zero span functionality found in traditional spectrum analyzers. Also available under Basic Mode Waveform measurements is an I/Q window, which shows the I and Q signal in parameters of voltage and time. The advantage of having an I/Q view available while in the waveform measurement is that it allows you to view complex components of the same signal without changing settings or measurements.
The Waveform measurement can be used to perform general purpose power measurements to a high degree of accuracy.
Measurement Method
The transmitter tester makes repeated power measurements at a set frequency, similar to the way a swept-tuned spectrum analyzer makes zero span measurements. The input analog signal is converted to a digital signal, which then is processed into a representation of a waveform measurement. The transmitter tester relies on a high rate of sampling to create an accurate representation of a time domain signal.
Making the Measurement
The factory default parameters provide a good starting point. You will likely want to change some of the settings. Press
Meas Setup
,
More
,
Restore Meas Defaults
at any time to return all parameters for the current measurement to their default settings.
Press
MEASURE
, Waveform (Time Domain) to immediately make
Waveform (Time Domain) the active measurement.
Press
Mode Setup
,
Radio
,
Inb Slot Format
to select the signal format.
Except for Full Slot Reserved, press
Color Code
to enter a number from
0 to 95 for the color code.
To change any of the measurement parameters from the factory default
88 Chapter 3
Figure 3-15
Making iDEN or WiDEN Measurements
Making the Waveform (Time Domain) Measurement
values, refer to the “Changing the Measurement Setup” section for this
measurement.
Results
Waveform Measurement Results- RF Envelope Window
Table 3-8
Changing the Measurement Setup
Waveform (Time Domain) Measurement Defaults
Measurement
Parameter
Factory Default Condition
View/Trace
Sweep Time
Res BW
Averaging:
Avg Number
Avg Mode
Avg Type
Trigger Source
RF Envelope Window:
Amplitude Y Scale
Scale/Div
Reference
iDEN
RF Envelope
15.00 ms
100.000 kHz
10 Off
Exp
Pwr Avg (RMS)
RF Burst
10.00 dB
0.00 dBm (Top)
WiDEN
RF Envelope
90.00 ms
100.000 kHz
10 Off
Exp
Pwr Avg (RMS)
RF Burst
10.00 dB
0.00 dBm (Top)
Chapter 3 89
Table 3-8
NOTE
Making iDEN or WiDEN Measurements
Making the Waveform (Time Domain) Measurement
Waveform (Time Domain) Measurement Defaults
Measurement
Parameter
Factory Default Condition
I/Q Waveform Window:
Amplitude Y Scale
Scale/Div
Reference
iDEN
100.0 mv
0.00 V (Ctr)
WiDEN
100.0 mv
0.00 V (Ctr)
Advanced
Pre-ADC BPF
RBW Filter
ADC Range
Off
Gaussian
Auto
Auto
Off
Gaussian
Auto
Auto Data Packing
ADC Dither
Decimation
Off
Off
Off
Off
Parameters that are under the
Advanced
key seldom need to be changed. Any changes from the default values may result in invalid measurement data.
Make sure the
Waveform (Time Domain)
measurement is selected under the
Measure
menu. Press
Meas Setup
to access a menu which allows you to modify the averaging, and trigger source for this measurement (as
described in “Measurement Setup” on page 44 ). In addition, the
following parameters can be modified:
•
Sweep Time
− Allows you to select the measurement acquisition time. It is used to specify the length of the time capture record.
Values between 10
µs and 50 s can be entered, depending upon the resolution bandwidth setting.
•
Res BW
− Sets the measurement bandwidth. A wider bandwidth results in a larger number of acquisition points and reduces the maximum allowed for sweep time. You can enter values between 10
Hz. and 7.5 MHz.
•
Advanced
menu key
− This key accesses the following features:
—
Pre-ADC BPF
− Allows you to toggle the pre-ADC bandpass filter
On
or
Off
. The pre-ADC bandpass filter is useful for rejecting nearby signals, so that sensitivity within the span range can be improved by increasing the ADC range gain.
—
RBW Filter
− Toggles to select a flat top or a Gaussian resolution bandwidth filter. A Gaussian filter provides more even time domain response, particularly for bursts. A flat top filter provides a flatter bandwidth but is less accurate for pulse responses. A flat
90 Chapter 3
Making iDEN or WiDEN Measurements
Making the Waveform (Time Domain) Measurement
top filter also requires less memory and allows longer data acquisition times. For most waveform applications, the Gaussian filter is recommended, and it is the default filter for waveform measurements.
—
ADC Range
− Allows you to access the following selection menu to define one of the following ADC ranging functions:
❏
Auto
− Allows the instrument to automatically adjust the signal range for optimal measurement results.
❏
Auto Peak
− Allows the instrument to continuously seek the highest peak signal.
❏
AutoPeakLock
− Causes the instrument to adjust the range for the highest peak signal it identifies, and retains the range settings determined by that peak signal, even when the peak signal is no longer present.
❏
Manual
− Allows you to set the ADC range level. Note that manual ranging is best for CW signals.
12 bit Digital IF
The following selection menu is available:
− 6 dB
,
0 dB
,
+6 dB
,
+12 dB
,
+18 dB
,
+24 dB
.
14 bit Digital IF
The following selection menu is available:
None
,
0 dB
,
+6 dB
,
+12 dB
,
+18 dB
.
—
Data Packing
− Allows you to access the following selection menu to define one of the following data packing methods:
❏
Auto
- Data is automatically packed. This is the default setting and most recommended.
❏
Short (16 bit)
− Data is packed by every 16 bits.
❏
Medium (24 bit)
− Data is packed by every 24 bits.
❏
Long (32 bit)
− Data is packed by every 32 bits.
—
ADC Dither
− Allows you to toggle the ADC dither function
On
or
Off
. Activation of the ADC dither results in better amplitude linearity and resolution in low level signals. However, it also results in reduced dynamic range.
ADC Dither
is set to
Off
by default.
—
Decimation
− Allows you to toggle the decimation function
On
or
Off
and to set the decimation value. Decimation allows longer acquisition times for a given bandwidth by eliminating data points. Long time captures can be limited by the transmitter tester data acquisition memory. Decimation numbers 1 to 4 describe the factor by which the number of points are reduced. A decimation figure of 1, which results in no data point reduction, is the default.
Chapter 3 91
Making iDEN or WiDEN Measurements
Making the Waveform (Time Domain) Measurement
Changing the View
The
View/Trace
menu keys are used to activate a view of a measurement with preset X and Y scale parameters; this view is called a “window.”
Using the X and Y scale keys, you can then modify these parameters.
You can also activate traces, using the
Traces Display
menu key.
Windows Available for Waveform Measurements
RF Envelope window
− Select this window if you want to view power (in dBm) versus time. Remember that data acquisition will be affected when you change the sweep time.
I/Q Waveform window
− Select this window to view the I and Q signal characteristics of the current measurement in parameters of voltage and time.
Using Markers
The
Marker
front-panel key accesses the menu to configure the markers.
If you want to use the marker function in the I/Q window, press
View/Trace
,
I/Q Waveform
,
Marker
,
Trace
,
IQ Waveform
.
•
Select 1 2 3 4
− Allows you to activate up to four markers with the corresponding numbers, respectively. The selected number is underlined and its function is defined by pressing the
Function
key.
The default is 1.
•
Normal
− Allows you to activate the selected marker to read the frequency and amplitude of the marker position on the Waveform trace, for example, which is controlled by the
RPG
knob.
•
Delta
− Allows you to read the differences in frequencies and amplitudes between the selected marker and the next marker.
•
Function Off
− Allows you to define the selected marker function to be
Band Power
,
Noise
, or
Off
. The default is
Off
. If set to
Band Power
, you need to select
Delta
.
•
Trace Spectrum
− Allows you to place the selected marker on the
Spectrum
,
Spectrum Avg
, or
I/Q Waveform
trace. The default is
Spectrum
.
•
Off
- Allows you to turn off the selected marker.
•
Shape Diamond
− Allows you to access the menu to define the selected marker shape to be a
Diamond
,
Line
,
Square
, or
Cross
. The default is a
Diamond
.
•
Marker All Off
− Allows you to turn off all of the markers.
The front-panel
Search
key performs a peak search when pressed. A marker will automatically be activated at the highest peak.
92 Chapter 3
NOTE
Making iDEN or WiDEN Measurements
Making the Waveform (Time Domain) Measurement
In the Waveform measurement, the Mean Pwr (Entire Trace) value plus the Pk-to-Mean value will sum to equal the current Max Pt. value as shown in the data window below the RF Envelope display. If you do a marker peak search (
Search
) with averaging turned off, the marker will find the same maximum point. However, if you turn averaging on, the
Pk-to-Mean
value will use the highest peak found for any acquisition during averaging, while the marker peak will look for the peak of the display, which is the result of n-averages. This will usually result in differing values for the maximum point.
Band Power
A band power measurement using the markers calculates the average power between two adjustable markers. To make a band power measurement:
• Press Marker, Function,
Band Power
.
• Two marker lines are activated at the extreme left side of the horizontal scale. Press
Normal
and move marker 1 to the desired place by rotating the
RPG
knob.
• Press
Delta
to bring marker 2 to the same place as marker 1.
• Move marker 1 to the other desired position by rotating the
RPG
knob. Band power measures the average power between the two markers. When the band power markers are active, the results are shown in the results window as Mean Pwr (Between Mks). When the band power function is off, the results window reads Mean Pwr
(Entire Trace)
.
Troubleshooting Hints
Changes made by the user to advanced waveform settings can inadvertently result in measurements that are invalid and cause error messages to appear. Care needs to be taken when using advanced features.
Chapter 3 93
Making iDEN or WiDEN Measurements
Making the Waveform (Time Domain) Measurement
94 Chapter 3
4
iDEN and WiDEN Specifications
95
iDEN and WiDEN Specifications
The specifications for each measurement apply for the measurements when they are set to the factory default settings. All specifications apply over 0
°C to +55 °C, except when otherwise specified. The instrument will meet its specifications:
• after 2 hours of storage at a constant temperature
• within the operating temperature range
• 1 hour after the instrument is turned on
• within 24 hours after “Align All Now” has been run.
96 Chapter 4
iDEN and WiDEN Specifications
Measurements
Measurements
Measurement Specifications
Adjacent Channel Power Ratio
Carrier power range at UUT a
Carrier power range at RF Input
Adjacent channel power ratio range
at 25 kHz offset
+ 46 to − 20 dBm
+ 26 to − 40 dBm
0.01 dB Resolution a. UUT
=
Unit Under Test
Measurement
Occupied Bandwidth
Carrier power range at UUT
Carrier power range at RF Input
Frequency resolution of occupied bandwidth
Frequency accuracy of occupied bandwidth
Frequency resolution of carrier frequency error
Frequency accuracy of carrier frequency error
Specifications
+ 46 to − 20 dBm
+ 26 to − 40 dBm
10 Hz
300 Hz
10 Hz
Supplemental Information
With
≥ 20 dB external atten.
0 to
− 70 dBc, characteristic
For 18 kHz reference BW and
10 kHz offset BW.
Supplemental Information
With
≥ 20 dB external atten.
Chapter 4 97
iDEN and WiDEN Specifications
Measurements
Measurement
M16QAM Bit Error Rate
Carrier power range at UUT
Carrier power range at RF Input
Minimum BER
Frequency error:
Input frequency error range
Frequency accuracy of carrier
frequency
Specifications
+46 to
− 20 dBm
+
26 to − 40 dBm
< 1%
Supplemental Information
With
≥ 20 dB external atten.
± 5 kHz, characteristic
± 10 Hz, characteristic
Measurement
Waveform (Time Domain)
Specifications
See “Waveform
Measurement” under
Transmitter Tester
Specifications
(Measurements)
Supplemental Information
Measurement Specifications
Measurement” under
Transmitter Tester
Specifications
(Measurements)
Supplemental Information
98 Chapter 4
iDEN and WiDEN Specifications
Frequency
Frequency
Measurements Specifications
In-Band Frequency Range
700 to 1600 MHz
Supplemental Information
Chapter 4 99
Measurements
Trigger
Trigger source iDEN and WiDEN Specifications
General
General
Specifications Supplemental Information
RF burst (wideband), Video (IF envelope), Ext Front, Ext Rear,
Frame Timer. Actual available choices are dependent on measurement.
Default is video (IF envelope) for Occupied BW and BER.
It is RF burst (wideband) for
ACPR.
Trigger delay
Range
Accuracy
Resolution
External trigger input
Level
Impedance
− 500 to +500 ms
± 33 ns
33 ns
− 5 to +5 V, characteristic
>10 k
Ω, nominal
Measurements
Measurement Speed
Adjacent channel power ratio
Bit error rate (M16QAM
Occupied BW
Specifications
≤ 4 s goal
≤ 4 s goal
≤ 4 s goal
Supplemental Information
≤ 2 s goal
≤ 2 s goal
≤ 2 s goal
100 Chapter 4
5
iDEN Programming Commands
These commands are only available when the iDEN or WiDEN mode has been selected using INSTrument:SELect. If iDEN or WiDEN mode is selected, commands that are unique to another mode are not available.
101
iDEN Programming Commands
SCPI Command Subsystems
SCPI Command Subsystems
“CALCulate Subsystem” on page 103
“CONFigure Subsystem” on page 129
“DISPlay Subsystem” on page 130
“FORMat Subsystem” on page 139
“INITiate Subsystem” on page 141
“MEASure Group of Commands” on page 146
102 Chapter 5
iDEN Programming Commands
CALCulate Subsystem
CALCulate Subsystem
This subsystem is used to perform post-acquisition data processing. In effect, the collection of new data triggers the CALCulate subsystem. In this instrument, the primary functions in this subsystem are markers and limits.
Adjacent Channel Power—Limit Test
:CALCulate:ACP:LIMit:STATe OFF|ON|0|1
:CALCulate:ACP:LIMit:STATe?
Turn limit test on or off.
Factory Preset and *RST: On
Remarks: You must be in Basic, cdmaOne, iDEN, WiDEN mode to use this command. Use INSTrument:SELect to set the mode.
Bit Error Rate—Error Limit
:CALCulate:BER:LIMit:ERATe <percent>
:CALCulate:BER:LIMit:ERATe?
Set the percent error limit on the bit error rate.
Factory Preset: 5%
Range: 0.1 to 20% (iDEN)
0.0 to 20% (WiDEN)
Default Unit: Hz
Remarks: You must be in the iDEN, WiDEN mode to use this command. Use INSTrument:SELect to set the mode.
History:
Front Panel
Access:
Version A.07.05 or later
Meas Setup
Bit Error Rate—Limit Testing
:CALCulate:BER:LIMit:STATe OFF|ON|0|1
:CALCulate:BER:LIMit:STATe?
Turn limit testing on or off.
Chapter 5 103
iDEN Programming Commands
CALCulate Subsystem
Factory Preset: On
Remarks: You must be in the iDEN or WiDEN mode to use this command. Use INSTrument:SELect to set the mode.
History: Version A.07.05 or later
Query the Current Measurement Status
:CALCulate:CLIMits:FAIL?
Checks if the current measurement is outside its limits. It returns a 0
(zero) if it is passing or a 1 (one) if it is failing.
Front Panel
Access: None
Data Query
:CALCulate:DATA[n]?
Returns the designated measurement data for the currently selected measurement and sub-opcode.
n
= any valid sub-opcode for the current measurement. See the
“MEASure Group of Commands” on page 146 for information on the
data that can be returned for each measurement.
Calculate/Compress Trace Data Query
:CALCulate:DATA<n>:COMPress?
BLOCk|CFIT|MAXimum|MINimum|MEAN|DMEan
|RMS|RMSCubed|SAMPle|SDEViation|PPHase
[,<soffset>[,<length>[,<roffset>[,<rlimit>]]]]
Returns compressed data for the specified trace data. The data is returned in the same units as the original trace and only works with the currently selected measurement. The command is used with a sub-opcode <n> since measurements usually return several types of
trace data. See THE Table on page 110
for the sub-opcodes for the trace data names that are available in each measurement. For sub-opcodes that return scalar data use the :CALCulate:DATA[n]? command above.
This command is used to compress or decimate a long trace to extract and return only the desired data. A typical example would be to acquire
N frames of GSM data and return the mean power of the first burst in each frame. The command can also be used to identify the best curve fit
104 Chapter 5
iDEN Programming Commands
CALCulate Subsystem
for the data.
• BLOCk or block data - returns all the data points from the region of the trace data that you specify. For example, it could be used to return the data points of an input signal over several timeslots, excluding the portions of the trace data that you do not want.
• CFIT or curve fit - applies curve fitting routines to the data.
<soffset> and <length> are required to define the data that you want. <roffset> is an optional parameter for the desired order of the curve equation. The query will return the following values: the x-offset (in seconds) and the curve coefficients ((order + 1) values).
MIN, MAX, MEAN, DME, RMS, RMSC, SAMP, SDEV and PPH return one data value for each specified region (or <length>) of trace data, for as many regions as possible until you run out of trace data (using
<roffset> to specify regions). Or they return the number regions you specify (using <rlimit>) ignoring any data beyond that.
• MINimum - returns the minimum data point for the specified region(s) of trace data For I/Q trace data, the minimum magnitude of the I/Q pairs is returned.
• MAXimum - returns the maximum data point for the specified region(s) of trace data. For I/Q trace data, the maximum magnitude of the I/Q pairs is returned.
• MEAN - returns the arithmetic mean of the data point values for the specified region(s) of trace data. For I/Q trace data, the mean of the magnitudes of the I/Q pairs is returned. See the following equations.
NOTE
If the original trace data is in dB, this function returns the arithmetic mean of those log values, not log of the mean power, which is a more useful value.
Equation 5-1 Mean Value of Data Points for Specified
Region(s)
MEAN
= n
∑
Xi
Xi
∈ region(s) where Xi is a data point value, and n is the number of data points in the specified region(s).
Equation 5-2 Mean Value of I/Q Data Pairs for Specified
Region(s)
MEAN
= n
∑
Xi
Xi
∈ region(s)
Chapter 5 105
iDEN Programming Commands
CALCulate Subsystem
where |Xi| is the magnitude of an I/Q pair, and n is the number of I/Q pairs in the specified region(s).
• DMEan - returns the mean power (in dB/dBm) of the data point values for the specified region(s) of trace data. See the following equation:
Figure 5-1 DMEan Value of Data Points for Specified Region(s)
DME = 10 log
10
⎛
⎜
⎝ n
∑
⎛
⎝
Xi
10
⎞
⎠
Xi
∈ region(s)
⎞
⎟
⎠
• RMS - returns the arithmetic rms of the data point values for the specified region(s) of trace data. See the following equation.
For I/Q trace data, the rms of the magnitudes of the I/Q pairs is returned. See the following equation.
NOTE
This function is very useful for I/Q trace data.
However, if the original trace data is in dB, this function returns the rms of the log values which is not usually needed.
Equation 5-3 RMS Value of Data Points for Specified
Region(s)
RMS
= n
∑
Xi
2
Xi
∈ region(s) where Xi is a data point value, and n is the number of data points in the specified region(s).
Equation 5-4 RMS Value of I/Q Data Pairs for Specified
Region(s)
RMS
= n
∑
Xi Xi*
Xi
∈ region(s) where Xi is the complex value representation of an I/Q pair, Xi* its conjugate complex number, and n is the number of I/Q pairs in the specified region(s).
Once you have the rms value for a region of I/Q trace data, you may want to calculate the mean power. You must convert this rms I/Q value (peak volts) to power in dB.
106 Chapter 5
iDEN Programming Commands
CALCulate Subsystem
[
10
× ( rms value
)
2
]
• RMSCubed - returns the arithmetic rms of the cubed voltage normalized data point values for the specified region(s) of I/Q trace data by following the formula which is specifically defined for calculating the “Cubic Metric.” This formula is described in the
3GPP TS.25.101 release-7 document. The RMSCubed parameter can be used on any set of I/Q pairs (DATA0) with units of points, not time.
Equation 5-5 RMSC Values of I/Q Data Pairs for Specified Region(s)
RMSC
=
20 log n
∑
Xi
∈ reagion(s)
⎧
⎪
⎨
⎪
⎛
⎜
⎜ n
∑
Xi
∈ region(s)
XiXi*
⎠
⎞ 3
⎫
2
=
20 log n
∑
Xi
∈ region(s)
⎜
⎜
⎜
⎜
∑
XiXi*
⎠
Xi
∈ region(s)
⎟
⎟
⎟
⎟ where Xi is the complex value representation of an I/Q pair, Xi* its conjugate complex number, and n is the number of I/Q pairs in the specified region(s).
• SAMPle - returns the first data value for the specified region(s) of trace data. For I/Q trace data, the first I/Q pair is returned.
• SDEViation - returns the arithmetic standard deviation for the data point values for the specified region(s) of trace data. See the following equation.
For I/Q trace data, the standard deviation of the magnitudes of the
I/Q pairs is returned. See the following equation.
Equation 5-6 Standard Deviation of Data Point Values for Specified
Region(s)
SDEV
= n
∑
(
Xi
∈ region(s)
)
2 where Xi is a data point value, X is the arithmetic mean of the
Chapter 5 107
iDEN Programming Commands
CALCulate Subsystem
data point values for the specified region(s), and n is the number of data points in the specified region(s).
Equation 5-7 Standard Deviation of I/Q Data Pair Values for Specified
Region(s)
SDEV
= n
∑
(
Xi
–
X
Xi
∈ region(s)
)
2 where |Xi| is the magnitude of an I/Q pair, X is the mean of the magnitudes for the specified region(s), and n is the number of data points in the specified region(s).
• PPHase - returns the pairs of rms power (dBm) and arithmetic mean phase (radian) for every specified region and frequency offset (Hz).
The number of pairs is defined by the specified number of regions.
The command can be used for I/Q vector (n=0) in Waveform (time domain) measurement and all parameters are specified by data point in PPH.
The rms power of the specified region may be expressed as:
Power = 10 x log [10 x (RMS I/Q value)] + 10.
The RMS I/Q value (peak volts)
= n
∑
XiXi*
Xi ∈ region where Xi is the complex value representation of an I/Q pair, Xi* its conjugate complex number, and n is the number of I/Q pairs in the specified region.
The arithmetic mean phase of the specified region may be expressed as:
Phase
= n
∑
Yi
Yi
∈ region
Where Yi is the unwrapped phase of I/Q pair with applying frequency correction and n is the number of I/Q pairs in the specified region.
The frequency correction is made by the frequency offset calculated by the arithmetic mean of every specified region’s frequency offset.
Each frequency offset is calculated by the least square method against the unwrapped phase of I/Q pair.
108 Chapter 5
Figure 5-2 Sample Trace Data - Constant Envelope
length iDEN Programming Commands
CALCulate Subsystem
Figure 5-3
t
0 soffset roffset
If rlimit is set to 3, this last chunk of data will be ignored.
Sample Trace Data - Not Constant Envelope
length
If rlimit is set to 3, this chunk of data and any additional data will be ignored.
t
0 soffset roffset
<soffset> - start offset is an optional real number (in seconds). It specifies the amount of data at the beginning of the trace that will be ignored before the decimation process starts. It is the time from the start of the trace to the point where you want to start using the data.
The default value is zero.
<length> - is an optional real number (in seconds). It defines how much data will be compressed into one value. This parameter has a default value equal to the current trace length.
<roffset> - repeat offset is an optional real number (in seconds). It defines the beginning of the next field of trace elements to be compressed. This is relative to the beginning of the previous field.
This parameter has a default value equal to the <length> variable.
<rlimit> - repeat limit is an optional integer. It specifies the number of data items that you want returned. It will ignore any additional items beyond that number. You can use the Start offset and the
Repeat limit to pick out exactly what part of the data you want to
Chapter 5 109
NOTE
NOTE
iDEN Programming Commands
CALCulate Subsystem
use. The default value is all the data.
Example: To query the mean power of a set of GSM bursts:
1. Set the waveform measurement sweep time to acquire at least one burst.
2. Set the triggers such that acquisition happens at a known position relative to a burst.
3. Then query the mean burst levels using,
CALC:DATA2:COMP? MEAN,24e-6,526e-6
(These parameter values correspond to GSM signals, where
526e-6 is the length of the burst in the slot and you just want 1 burst.)
There is a more detailed example in the “Improving the Speed of Your
Measurements” section in the PSA Series User’s and Programmer’s
Reference. There is also a sample program in the Programming
Fundamentals chapter of that book, and a copy of it is on the documentation CD-ROM.
There is a more detailed example in the “Improving the Speed of Your
Measurements” section in the E4406A Programmer’s Guide. There is also a sample program in the Programming Fundamentals chapter of that book, and a copy of it is on the documentation CD-ROM.
Remarks:
History:
The optional parameters must be entered in the specified order. For example, if you want to specify
<length>, you must also specify <soffset>.
This command uses the data in the format specified by
FORMat:DATA, returning either binary or ASCII data.
Added in revision A.03.00
Changed in revision A.05.00
Measurement Available Traces Markers
Available?
no markers ACP - adjacent channel power
(Basic, cdmaOne, cdma2000,
W-CDMA, iDEN, WiDEN, NADC, PDC modes)
BER - bit error rate
(iDEN, WiDEN mode) no traces
for I/Q points no traces
for I/Q data no markers
110 Chapter 5
iDEN Programming Commands
CALCulate Subsystem
Measurement Available Traces Markers
Available?
yes CDPower - code domain power
(cdmaOne mode)
CDPower - code domain power
(cdma2000 mode)
CDPower - code domain power
(W-CDMA mode)
POWer (n=2)
(n=0)
CDPower (n=2)
EVM (n=5)
MERRor (n=6)
PERRor (n=7)
CPOWer (n=10)
(n=0)
CDPower (n=2)
EVM (n=5)
MERRor (n=6)
PERRor (n=7)
CPOWer (n=10)
(n=0)
(n=0)
CHPower - channel power
(Basic, cdmaOne, cdma2000, W-CDMA modes)
CSPur - spurs close
(cdmaOne mode)
EEVM - EDGE error vector magnitude
(EDGE mode)
(n=0)
EVMerror (n=2)
MERRor (n=3)
PERRor (n=4)
(n=0)
yes yes no markers yes yes
Chapter 5 111
iDEN Programming Commands
CALCulate Subsystem
Measurement
EORFspectr - EDGE output RF spectrum
(EDGE mode)
EPVTime - EDGE power versus time
(EDGE mode)
ETSPur - EDGE transmit band spurs
(EDGE mode)
EVM - error vector magnitude
(NADC, PDC modes)
EVMQpsk - QPSK error vector magnitude
(cdma2000, W-CDMA modes)
IM - intermodulation
(cdma2000, W-CDMA modes)
MCPower - multi-carrier power
(W-CDMA mode)
OBW - occupied bandwidth
(cdmaOne, cdma2000, iDEN, WiDEN,
PDC, W-CDMA modes)
Available Traces Markers
Available?
RFEMod (n=2)
RFESwitching (n=3)
for I/Q points
LMASk (n=4)
for I/Q points
SPECtrum (n=2)
ULIMit (n=3)
for I/Q points
for I/Q points
for I/Q points
SPECtrum (n=2)
for I/Q points no traces
for I/Q points no traces
for I/Q points yes, only for a single offset yes, only for multiple offsets yes yes yes yes yes no markers no markers
112 Chapter 5
iDEN Programming Commands
CALCulate Subsystem
Measurement
ORFSpectrum - output RF spectrum
(GSM, EDGE mode)
PFERror - phase and frequency error
(GSM, EDGE mode)
PSTatistic - power statistics CCDF
(Basic, cdma2000, W-CDMA modes)
PVTime - power versus time
(GSM, EDGE, Service modes)
RHO - modulation accuracy
(cdmaOne, cdma2000 mode)
RHO - modulation accuracy
(W-CDMA mode)
Available Traces
RFEMod (n=2)
SPEMod (n=4)
LIMMod (n=5)
(n=0)
PERRor (n=2)
PFERror (n=3)
RFENvelope (n=4)
(n=0)
GAUSian (n=3)
REFerence (n=4)
(n=0)
RFENvelope (n=2)
UMASk (n=3)
(n=0)
(n=0)
EVM (n=2)
MERRor (n=3)
PERRor (n=4)
(n=0)
(n=0)
CDPower (n=8)
EVM (n=2)
MERRor (n=3)
PERRor (n=4)
(n=0)
Markers
Available?
yes, only for a single offset yes, only for multiple offsets yes yes yes yes yes
Chapter 5 113
iDEN Programming Commands
CALCulate Subsystem
Measurement Available Traces Markers
Available?
SEMask - spectrum emissions mask
(cdma2000, W-CDMA mode)
TSPur - transmit band spurs
(GSM, EDGE mode)
TXPower - transmit power
(GSM, EDGE mode)
SPECtrum (n=2)
for I/Q points
SPECtrum (n=2)
ULIMit (n=3)
for I/Q points
for I/Q points yes yes yes
SPECtrum - (frequency domain)
(all modes)
for Service mode
SPECtrum (n=4) a
for I/Q points yes
WAVEform - (time domain)
(all modes)
(also for Signal
Envelope trace)
for I/Q points yes a. The n number indicates the sub-opcode that corresponds to this trace. Detailed descriptions of the trace data can be found in the
MEASure subsystem documentation by looking up the sub-opcode for the appropriate measurement.
Calculate Peaks of Trace Data
:CALCulate:DATA[n]:PEAKs?
<threshold>,<excursion>[,AMPLitude|FREQuency|TIME]
Returns a list of peaks for the designated trace data n for the currently selected measurement. The peaks must meet the requirements of the peak threshold and excursion values.
The command can be used with sub-opcodes (n) for any measurement results that are trace data. See the table above. Sub-opcode n=0, raw
114 Chapter 5
iDEN Programming Commands
CALCulate Subsystem
trace data cannot be searched for peaks. Both real and complex traces can be searched, but complex traces are converted to magnitude in dBm.
Threshold - is the level below which trace data peaks are ignored
Excursion - To be defined as a peak, the signal must rise above the threshold by a minimum amplitude change. Excursion is measured from the lowest point above the threshold (of the rising edge of the peak), to the highest signal point that begins the falling edge.
Amplitude - lists the peaks in order of descending amplitude, so the highest peak is listed first. This is the default peak order listing if the optional parameter is not specified.
Frequency - lists the peaks in order of occurrence, left to right across the x-axis
Time - lists the peaks in order of occurrence, left to right across the x-axis
Example: Select the spectrum measurement.
Use CALC:DATA4:PEAK? -40,10,FREQ to identify the peaks above -40 dBm, with excursions of at least 10 dB, in order of increasing frequency.
Query Results: Returns a list of floating-point numbers. The first value in the list is the number of peak points that follow. A peak point consists of two values: a peak amplitude followed by the its corresponding frequency (or time).
If no peaks are found the peak list will consist of only the number of peaks, (0).
The peak list is limited to 100 peaks. Peaks in excess of
100 are ignored.
Remarks:
History:
This command uses the data setting specified by the
FORMat:DATA command and can return real 32-bit, real 64-bit, or ASCII data. The default data format is
ASCII.
Added in revision A.03.00 and later
CALCulate:MARKers Subsystem
Markers can be put on your displayed measurement data to supply information about specific points on the data. Some of the things that markers can be used to measure include: precise frequency at a point, minimum or maximum amplitude, and the difference in amplitude or frequency between two points.
Chapter 5 115
iDEN Programming Commands
CALCulate Subsystem
When using the marker commands you must specify the measurement in the SCPI command. We recommend that you use the marker commands only on the current measurement. Many marker commands will return invalid results, when used on a measurement that is not current. (This is true for commands that do more than simply setting or querying an instrument parameter.) No error is reported for these invalid results.
You must make sure that the measurement is completed before trying to query the marker value. Using the MEASure or READ command, before the marker command, forces the measurement to complete before allowing the next command to be executed.
Each measurement has its own instrument state for marker parameters. Therefore, if you exit the measurement, the marker settings in each measurement are saved and are then recalled when you change back to that measurement.
iDEN Mode - <measurement> key words
• ACP - no markers
• BER - no markers
• OBW - no markers
• SPECtrum - markers available
• WAVeform - markers available
Example:
Suppose you are using the Spectrum measurement. To position marker
2 at the maximum peak value, of the trace that marker 2 is currently on, the command is:
:CALCulate:SPECtrum:MARKer2:MAXimum
You must make sure that the measurement is completed before trying to query the marker value. Using the MEASure or READ command, before the marker command, forces the measurement to complete before allowing the next command to be executed.
Markers All Off on All Traces
:CALCulate:<measurement>:MARKer:AOFF
Turns off all markers on all the traces.
Example:
CALC:SPEC:MARK:AOFF
Remarks: The keyword for the current measurement must be specified in the command. (Some examples include:
SPECtrum, WAVeform)
Front Panel
Access:
Marker, More, Marker All Off
116 Chapter 5
iDEN Programming Commands
CALCulate Subsystem
Marker Function
:CALCulate:<measurement>:MARKer[1]|2|3|4:FUNCtion
BPOWer|NOISe|OFF
:CALCulate:<measurement>:MARKer[1]|2|3|4:FUNCtion?
Selects the type of marker for the specified marker. A particular measurement may not have all the types of markers that are commonly available.
The marker must have already been assigned to a trace. Use
:CALCulate:<measurement>:MARKer[1]|2|3|4:TRACe to assign a marker to a particular trace.
Band Power
− is the integrated power between the two markers for traces in the frequency domain and is the mean power between the two markers for traces in the time domain.
Noise
− is the noise power spectral density in a 1 Hz bandwidth. It is averaged over 32 horizontal trace points.
Off
− turns off the marker functions
Example:
CALC:SPEC:MARK3:FUNC Noise
Remarks: The keyword for the current measurement must be specified in the command. (Some examples include:
SPECtrum, WAVeform)
Front Panel
Access:
Marker, Marker Function
Marker Function Result
:CALCulate:<measurement>:MARKer[1]|2|3|4:FUNCtion:RESult?
Quires the result of the currently active marker function. The measurement must be completed before querying the marker.A particular measurement may not have all the types of markers available.
The marker must have already been assigned to a trace. Use
:CALCulate:<measurement>:MARKer[1]|2|3|4:TRACe to assign a marker to a particular trace.
Example:
Remarks:
CALC:SPEC:MARK:FUNC:RES?
The keyword for the current measurement must be specified in the command. (Some examples include:
SPECtrum, WAVeform)
Front Panel
Chapter 5 117
iDEN Programming Commands
CALCulate Subsystem
Access:
Marker, Marker Function
Marker IQ
:CALCulate:<measurement>:MARKer[1]|2|3|4:IQ?
When a marker is placed on an IQ trace, this command returns the I and Q of the marker position in volts.
The marker must have already been assigned to a trace. Use
:CALCulate:<measurement>:MARKer[1]|2|3|4:TRACe to assign a marker to a particular trace.
Example:
Remarks:
CALC:SPEC:MARK:IQ4?
The keyword for the current measurement must be specified in the command. (Some examples include:
SPECtrum, WAVeform)
Front Panel
Access:
Marker, Marker Function
Marker Peak (Maximum) Search
:CALCulate:<measurement>:MARKer[1]|2|3|4:MAXimum
Places the selected marker on the highest point on the trace that is assigned to that particular marker number.
The marker must have already been assigned to a trace. Use
:CALCulate:<measurement>:MARKer[1]|2|3|4:TRACe to assign a marker to a particular trace.
Example:
Remarks:
CALC:SPEC:MARK1:MAX
The keyword for the current measurement must be specified in the command. (Some examples include:
SPECtrum, WAVeform)
Front Panel
Access:
Search
Marker Peak (Minimum) Search
:CALCulate:<measurement>:MARKer[1]|2|3|4:MINimum
Places the selected marker on the lowest point on the trace that is assigned to that particular marker number.
The marker must have already been assigned to a trace. Use
:CALCulate:<measurement>:MARKer[1]|2|3|4:TRACe to assign a
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marker to a particular trace.
Example:
CALC:SPEC:MARK2:MIN
Remarks: The keyword for the current measurement must be specified in the command. (Some examples include:
SPECtrum, WAVeform)
Front Panel
Access: None
Marker Mode
:CALCulate:<measurement>:MARKer[1]|2|3|4:MODE
POSition|DELTa
:CALCulate:<measurement>:MARKer[1]|2|3|4:MODE?
Selects the type of marker to be a normal position-type marker or a delta marker.A specific measurement may not have both types of markers. For example, several measurements only have position markers.
The marker must have already been assigned to a trace. Use
:CALCulate:<measurement>:MARKer[1]|2|3|4:TRACe to assign a marker to a particular trace.
Example:
Remarks:
CALC:SPEC:MARK:MODE DELTA
For the delta mode only markers 1 and 2 are valid.
The keyword for the current measurement must be specified in the command. (Some examples include:
SPECtrum, WAVeform)
Front Panel
Access:
Marker, Marker [Delta]
Marker On/Off
:CALCulate:<measurement>:MARKer[1]|2|3|4[:STATe] OFF|ON|0|1
:CALCulate:<measurement>:MARKer[1]|2|3|4[:STATe]?
Turns the selected marker on or off.
The marker must have already been assigned to a trace. Use
:CALCulate:<measurement>:MARKer[1]|2|3|4:TRACe to assign a marker to a particular trace.
Example:
Remarks:
CALC:SPEC:MARK2: on
The keyword for the current measurement must be specified in the command. (Some examples include:
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SPECtrum, AREFerence, WAVeform)
The WAVeform measurement only has two markers available.
Front Panel
Access: M
arker, Select
then
Marker Normal
or
Marker On Off
Marker to Trace
:CALCulate:<measurement>:MARKer[1]|2|3|4:TRACe <trace_name>
:CALCulate:<measurement>:MARKer[1]|2|3|4:TRACe?
Assigns the specified marker to the designated trace. Not all types of measurement data can have markers assigned to them.
Example: With the WAVeform measurement selected, a valid command is CALC:SPEC:MARK2:TRACE rfenvelope.
Range:
Remarks:
The names of valid traces are dependent upon the selected measurement. See the following table for the available trace names. The trace name assignment is independent of the marker number.
The keyword for the current measurement must be specified in the command. (Some examples include:
SPECtrum, WAVeform)
Front Panel
Access:
Marker, Marker Trace
Measurement
ACP - adjacent channel power
(Basic, cdmaOne, cdma2000, W-CDMA, iDEN (E4406A only), WiDEN (E4406A only), NADC, PDC modes)
BER - bit error rate
(iDEN, WiDEN mode, E4406A only)
CDPower - code domain power
(cdmaOne mode)
Available Traces
no traces
(n=0)
no traces
(n=0)
PHASe (n=4)
(n=0)
Markers
Available?
no markers no markers yes
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Measurement Available Traces
CDPower - code domain power
(cdma2000, W-CDMA, 1xEV-DO modes)
CHPower - channel power
(Basic, cdmaOne, cdma2000, W-CDMA,
1xEV-DO modes)
CSPur - spurs close
(cdmaOne mode)
EEVM - EDGE error vector magnitude
(EDGE mode)
EORFspectr - EDGE output RF spectrum
(EDGE mode)
EPVTime - EDGE power versus time
(EDGE mode)
ETSPur - EDGE transmit band spurs
(EDGE mode)
MERRor (n=6)
PERRor (n=7)
CPOWer (n=10)
for I/Q points
for I/Q points
ULIMit (n=3)
for I/Q points
EVMerror (n=2)
MERRor (n=3)
PERRor (n=4)
for I/Q points
RFEMod (n=2)
RFESwitching (n=3)
for I/Q points
RFENvelope (n=2)
UMASk (n=3)
LMASk (n=4)
for I/Q points
ULIMit (n=3)
for I/Q points
Markers
Available?
yes no markers yes yes yes, only for a single offset yes, only for multiple offsets yes yes
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Measurement Available Traces
EVM - error vector magnitude
(NADC, PDC modes)
EVMQpsk - QPSK error vector magnitude
(cdma2000, W-CDMA, 1xEV-DO modes)
IM - intermodulation
(cdma2000, W-CDMA, 1xEV-DO modes)
MCPower - multi-carrier power
(W-CDMA mode)
OBW - occupied bandwidth
(cdmaOne, cdma2000, iDEN (E4406A only), WiDEN (E4406A only), PDC,
W-CDMA, 1xEV-DO modes)
ORFSpectrum - output RF spectrum
(GSM, EDGE mode)
EVM (n=2)
(n=0)
EVM (n=2)
(n=0)
SPECtrum (n=2)
(n=0)
no traces
(n=0)
no traces
(n=0)
PFERror - phase and frequency error
(GSM, EDGE mode)
PSTatistic - power statistics CCDF
(Basic, cdma2000, W-CDMA, 1xEV-DO modes)
SPEMod (n=4)
LIMMod (n=5)
(n=0)
PFERror (n=3)
(n=0)
MEASured (n=2)
(n=0)
Markers
Available?
yes yes yes no markers no markers yes, only for a single offset yes, only for multiple offsets yes yes
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Measurement Available Traces Markers
Available?
PVTime - power versus time
(GSM, EDGE, 1xEV-DO, Service (E4406A only) modes)
RHO - modulation quality
(cdmaOne, cdma2000, W-CDMA, 1xEV-DO mode)
SEMask - spectrum emissions mask
(cdma2000, W-CDMA, 1xEV-DO mode)
TSPur - transmit band spurs
(GSM, EDGE mode)
TXPower - transmit power
(GSM, EDGE mode)
SPECtrum - (frequency domain)
(all modes)
RFENvelope (n=2)
UMASk (n=3)
LMASk (n=4)
for I/Q points
for I/Q points
MERRor (n=3)
PERRor (n=4)
for I/Q points
for I/Q points
ULIMit (n=3)
for I/Q points
RFENvelope (n=2)
IQ (n=8)
for I/Q points
RFENvelope (n=2)
Service mode
(E4406A only)
IQ (n=3)
SPECtrum (n=4) a
for I/Q points yes yes yes yes yes yes
WAVEform - (time domain)
(all modes)
RFENvelope (n=2)
(also for Signal
Envelope trace)
IQ (n=5)
for I/Q points yes a. The n number indicates the sub-opcode that corresponds to this trace. Detailed descriptions of the trace data can be found in the
MEASure subsystem documentation by looking up the sub-opcode for the appropriate measurement.
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Marker X Value
:CALCulate:<measurement>:MARKer[1]|2|3|4:X <param>
:CALCulate:<measurement>:MARKer[1]|2|3|4:X?
Position the designated marker on its assigned trace at the specified X value. The parameter value is in X-axis units (which is often frequency or time).
The marker must have already been assigned to a trace. Use
:CALCulate:<measurement>:MARKer[1]|2|3|4:TRACe to assign a marker to a particular trace.
The query returns the current X value of the designated marker. The measurement must be completed before querying the marker.
Example:
CALC:SPEC:MARK2:X 1.2e6 Hz
Default Unit: Matches the units of the trace on which the marker is positioned
Remarks: The keyword for the current measurement must be specified in the command. (Some examples include:
SPECtrum, WAVeform)
Front Panel
Access:
Marker, <active marker>, RPG
Marker X Position
:CALCulate:<measurement>:MARKer[1]|2|3|4:X:POSition
<integer>
:CALCulate:<measurement>:MARKer[1]|2|3|4:X:POSition?
Position the designated marker on its assigned trace at the specified X position. A trace is composed of a variable number of measurement points. This number changes depending on the current measurement conditions. The current number of points must be identified before using this command to place the marker at a specific location.
The marker must have already been assigned to a trace. Use
:CALCulate:<measurement>:MARKer[1]|2|3|4:TRACe to assign a marker to a particular trace.
The query returns the current X position for the designated marker.
The measurement must be completed before querying the marker.
Example:
Range:
Remarks:
CALC:SPEC:MARK:X:POS 500
0 to a maximum of (3 to 920,000)
The keyword for the current measurement must be specified in the command. (Some examples include:
SPECtrum, WAVeform)
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Front Panel
Access:
Marker, <active marker>, RPG
Marker Readout Y Value
:CALCulate:<measurement>:MARKer[1]|2|3|4:Y?
Readout the current Y value for the designated marker on its assigned trace. The value is in the Y-axis units for the trace (which is often dBm).
The marker must have already been assigned to a trace. Use
:CALCulate:<measurement>:MARKer[1]|2|3|4:TRACe to assign a marker to a particular trace.
The measurement must be completed before querying the marker.
Example:
CALC:SPEC:MARK1:Y -20 dB
Default Unit: Matches the units of the trace on which the marker is positioned
Remarks: The keyword for the current measurement must be specified in the command. (Some examples include:
SPECtrum, WAVeform)
Occupied Bandwidth - Limits
Occupied Bandwidth—Frequency Band Limit
PDC, W-CDMA, 1xEV-DO mode
:CALCulate:OBW:LIMit:FBLimit <freq>
:CALCulate:OBW:LIMit:FBLimit?
iDEN, WiDEN mode (E4406A only)
:CALCulate:OBWidth:LIMit:FBLimit <freq>
:CALCulate:OBWidth:LIMit:FBLimit?
Set the frequency bandwidth limit in Hz.
Factory Preset: WiDEN mode (E4406A)
Default Carrier Configuration
Setting
Auto
25 kHz
50 kHz
Actual value depends on detected carrier configuration and cannot be changed.
20.0 kHz
45.0 kHz
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Carrier Configuration
Setting
50 kHz outer
75 kHz
100 kHz
Default
95.0 kHz
70.0 kHz
95.0 kHz
Factory Preset: 32 kHz for PDC
20 kHz for iDEN (E4406A only)
1.48 MHz for cdma2000, 1xEV-DO
5 MHz for W-CDMA
Range:
10 kHz to 10 MHz for cdma2000, W-CDMA, 1xEV-DO
Default Unit: Hz
Remarks:
10 kHz to 60 kHz for PDC, iDEN (E4406A only)
10 kHz to 200 kHz for WiDEN (E4406A only)
History:
You must be in the WiDEN, iDEN (E4406A only), PDC, cdma2000, W-CDMA, or 1xEV-DO mode to use this command. Use INSTrument:SELect to set the mode.
For E4406A WiDEN mode
, if you have set the Carrier
Config ([:SENSe]:RADio:CARRier[:TYPE]) to AUTO, the value is set to the default value described in
above according to the actual carrier config (you can see detected carrier configuration by sending
[:SENSe]:RADio:CARRier[:TYPE]:ACTual?) You can not change this value. Even if the you set this value using SCPI, it is ignored and the default value is used.
For E4406A:
Version A.02.00 or later
Widen is available on Version A.07.05 or later
Occupied Bandwidth—Limit Test
PDC, cdma2000, W-CDMA, 1xEV-DO mode
:CALCulate:OBW:LIMit[:TEST] OFF|ON|0|1
:CALCulate:OBW:LIMit[:TEST]?
iDEN, WiDEN mode (E4406A only)
:CALCulate:OBWidth:LIMit:STATe OFF|ON|0|1
:CALCulate:OBWidth:LIMit:STATe?
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Turn the limit test function on or off.
Factory Preset: ON
Remarks:
History:
You must be in the iDEN (E4406A only), PDC, cdma2000, W-CDMA, or 1xEV-DO mode to use this command. Use INSTrument:SELect to set the mode.
For E4406A:
Version A.02.00 or later
Widen is available on Version A.07.05 or later
Power vs. Time—Carrier Measurement
:CALCulate:PVTime:CARRier[:SELect] ALL|C0|C1|C2|C3
:CALCulate:PVTime:CARRier[:SELect]?
Enables you to set the carrier shown in the PvT measurement view. The
PvT view shows the composite signal power vs. time trace. However, when you select C0, C1, C2 or C3, the SGC portion of the signal power
(exactly, 1.05 ms to 1.45 ms from estimated t slot
) is replaced by that of the selected carrier signal power rescaled by a factor determined by the number of carriers. When ALL is selected, the SGC portion is replaced by two traces. One trace of maximum power and one trace of minimum power calculated by a point-by-point comparison of up to 4 carriers.
Factory Preset and *RST: On
Remarks: You must be in the WiDEN mode to use this command.
Use INSTrument:SELect to set the mode.
Available on Version A.07.05 or later History:
Front Panel
Access:
Meas Setup
Power vs. Time—Limit Test
:CALCulate:PVTime:LIMit:STATe OFF|ON|0|1
:CALCulate:PVTime:LIMit:STATe?
Turn limit testing on or off.
Factory Preset and *RST: On
Remarks: You must be in the iDEN, WiDEN mode to use this command. Use INSTrument:SELect to set the mode.
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Front Panel
Access:
Meas Setup
,
Limit Test
128 Chapter 5
iDEN Programming Commands
CONFigure Subsystem
CONFigure Subsystem
:CONFigure:<measurement>
The CONFigure commands are used with several other commands and are documented in the section on the
“MEASure Group of Commands” on page 146
.
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DISPlay Subsystem
DISPlay Subsystem
The DISPlay controls the selection and presentation of textual, graphical, and TRACe information. Within a DISPlay, information may be separated into individual WINDows.
Turn the Display On/Off
:DISPlay:ENABle OFF|ON|0|1
:DISPlay:ENABle?
Controls the display. If enable is set to off, the display will appear to
“freeze” in its current state. Measurements may run faster since the instrument doesn’t have to update the display after every data acquisition. There is often no need to update the display information when using remote operation. Turning the display off will also extend its life and reduce EMI. An instrument preset will turn the display back on.
Factory Preset: On
Remarks: The following key presses will turn display enable back on:
1. If in local, press any key
2. If in remote, press the local (system) key
3. If in local lockout (SYST:KLOCK), no key press will work
Front Panel
Access:
System
,
Disp Updates
Select Display Format
:DISPlay:FORMat:ZOOM
Selects the viewing format that displays only one window of the current measurement data (the current active window). Use DISP:FORM:TILE to return the display to multiple windows.
Front Panel
Access:
Zoom
(toggles between Tile and Zoom)
PVT - View Selection
iDEN, WiDEN mode
130 Chapter 5
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DISPlay Subsystem
:DISPlay:PVTime:VIEW ALL|BOTH
All other modes
:DISPlay:PVTime:VIEW ALL|BOTH|A|B|C|D|E
:DISPlay:PVTime:VIEW?
Select one of the power versus time measurement result views as follows:
ALL - displays the whole burst waveform throughout the all regions.
BOTH - displays both the rising and falling edges expanded in the horizontal scale.
A - display only the A region in the full horizontal scale.
B - display only the B region in the full horizontal scale.
C - display only the C region in the full horizontal scale.
D - display only the D region in the full horizontal scale.
E - display only the E region in the full horizontal scale.
Factory Preset: ALL
Remarks: You must be in the 1xEV-DO, iDEN, WiDEN, or
W-CDMA mode to use this command. Use
INSTrument:SELect to set the mode.
Front Panel
Access:
Power vs Time
,
View/Trace
Spectrum - Y-Axis Reference Level
:DISPlay:SPECtrum[n]:WINDow[m]:TRACe:Y[:SCALe]:RLEVel
<power>
:DISPlay:SPECtrum[n]:WINDow[m]:TRACe:Y[:SCALe]:RLEVel?
Sets the amplitude reference level for the y-axis.
n
− selects the view, the default is Spectrum.
— n=1, Spectrum
— n=2, I/Q Waveform
— n=3, numeric data (service mode)
— n=4, RF Envelope (service mode) m
− selects the window within the view. The default is 1.
Factory Preset and *RST: 0 dBm, for Spectrum
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DISPlay Subsystem
Range:
− 250 to 250 dBm, for Spectrum
Default Unit: dBm, for Spectrum
Remarks: May affect input attenuator setting.
To use this command, the appropriate mode should be selected with INSTrument:SELect.
Front Panel
Access: When in Spectrum measurement:
Level
Amplitude Y Scale, Ref
Turn a Trace Display On/Off
:DISPlay:TRACe[n][:STATe] OFF|ON|0|1
:DISPlay:TRACe[n][:STATe]?
Controls whether the specified trace is visible or not.
n is a sub-opcode that is valid for the current measurement. See the
“MEASure Group of Commands” on page 146 for more information
about sub-opcodes.
Factory Preset and *RST: On
Range: The valid traces and their sub-opcodes are dependent upon the selected measurement. See the following table.
Remarks:
The trace name assignment is independent of the window number.
To use this command, the appropriate mode should be selected with INSTrument:SELect.
Front Panel
Access:
Display, Display Traces
Measurement
ACP - adjacent channel power
(Basic, cdmaOne, cdma2000,
W-CDMA, iDEN (E4406A only),
WiDEN (E4406A only), NADC, PDC modes)
BER - bit error rate
(iDEN, WiDEN mode, E4406A only)
Available Traces
no traces
for I/Q points
Markers
Available?
no markers no traces
for I/Q data no markers
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DISPlay Subsystem
Measurement Available Traces Markers
Available?
yes CDPower - code domain power
(cdmaOne mode)
CDPower - code domain power
(cdma2000, 1xEV-DO, W-CDMA modes)
CHPower - channel power
(Basic, cdmaOne, cdma2000,
1xEV-DO, W-CDMA modes)
CSPur - spurs close
(cdmaOne mode)
EEVM - EDGE error vector magnitude
(EDGE mode)
EORFspectr - EDGE output RF spectrum
(EDGE mode)
POWer (n=2)
(n=0)
(n=0)
data
CDPower (n=2)
EVM (n=5)
MERRor (n=6)
PERRor (n=7)
CPOWer (n=10)
(n=0)
data
(n=0)
EVMerror (n=2)
MERRor (n=3)
PERRor (n=4)
(n=0)
RFEMod (n=2)
SPEMod (n=4)
LIMMod (n=5)
(n=0)
yes no markers yes yes yes, only for a single offset yes, only for multiple offsets
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DISPlay Subsystem
Measurement Available Traces Markers
Available?
EPVTime - EDGE power versus time
(EDGE mode)
ETSPur - EDGE transmit band spurs
(EDGE mode)
EVM - error vector magnitude
(NADC, PDC modes)
EVMQpsk - QPSK error vector magnitude
(cdma2000, 1xEV-DO, W-CDMA modes)
IM - intermodulation
(cdma2000, 1xEV-DO, W-CDMA modes)
MCPower - multi-carrier power
(W-CDMA mode)
OBW - occupied bandwidth
(cdmaOne, cdma2000, 1xEV-DO, iDEN
(E4406A only), WiDEN (E4406A only),
PDC, W-CDMA modes)
ORFSpectrum - output RF spectrum
(GSM, EDGE mode)
LMASk (n=4)
for I/Q points
SPECtrum (n=2)
ULIMit (n=3)
for I/Q points
for I/Q points
for I/Q raw data
SPECtrum (n=2)
for I/Q raw data no traces
for I/Q points no traces
for I/Q raw data yes yes yes yes yes no markers no markers
RFEMod (n=2)
RFESwitching (n=3)
for I/Q points yes, only for a single offset yes, only for multiple offsets
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DISPlay Subsystem
Measurement Available Traces Markers
Available?
yes PFERror - phase and frequency error
(GSM, EDGE mode)
PSTatistic - power statistics CCDF
(Basic, cdma2000, 1xEV-DO, W-CDMA modes)
PVTime - power versus time
(GSM, EDGE, 1xEV-DO, Service
(E4406A only) modes)
RHO - modulation quality
(cdmaOne, cdma2000, W-CDMA mode)
RHO - modulation quality
(1xEV-DO mode)
PERRor (n=2)
PFERror (n=3)
RFENvelope (n=4)
(n=0)
GAUSian (n=3)
REFerence (n=4)
(n=0)
(n=0)
data
RFENvelope (n=2)
UMASk (n=3)
(n=0)
data
EVM (n=2)
MERRor (n=3)
PERRor (n=4)
(n=5)
corrected trace data
(n=0)
data
(n=1)
summary results
EVM (n=2)
MERRor (n=3)
PERRor (n=4)
(n=5)
corrected trace data yes yes yes yes
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DISPlay Subsystem
Measurement Available Traces Markers
Available?
SEMask - spectrum emissions mask
(cdma2000, 1xEV-DO, W-CDMA mode)
TSPur - transmit band spurs
(GSM, EDGE mode)
TXPower - transmit power
(GSM, EDGE mode)
SPECtrum (n=2)
for I/Q raw data
SPECtrum (n=2)
ULIMit (n=3)
for I/Q points
for I/Q points yes yes yes
SPECtrum - (frequency domain)
(all modes)
for Service mode
(E4406A only)
SPECtrum (n=4) a
for I/Q raw data yes
WAVEform - (time domain)
(all modes)
(also for Signal
Envelope trace)
for I/Q raw data yes a.
The n number indicates the sub-opcode that corresponds to this trace.
Detailed descriptions of the trace data can be found in the MEASure subsystem documentation by looking up the sub-opcode for the appropriate measurement.
136 Chapter 5
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DISPlay Subsystem
Waveform - Y-Axis Reference Level
:DISPlay:WAVEform[n]:WINDow[m]:TRACe:Y[:SCALe]:RLEVel
<power>
:DISPlay:WAVEform[n]:WINDow[m]:TRACe:Y[:SCALe]:RLEVel?
Sets the amplitude reference level for the y-axis. n, selects the view, the default is RF envelope.
n=1, RF envelope n=2, I/Q waveform m, selects the window within the view. The default is 1.
Factory Preset and *RST: 0 dBm, for RF envelope
Range:
− 250 to 250 dBm, for RF envelope
Default Unit: dBm, for RF envelope
Remarks: May affect input attenuator setting.
To use this command, the appropriate mode should be selected with INSTrument:SELect.
Front Panel
Access: When in Waveform measurement:
Ref Level
Amplitude Y Scale,
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FETCh Subsystem
FETCh Subsystem
:FETCh:<measurement>[n]?
The FETCh? commands are used with several other commands and are documented in the section on the
“MEASure Group of Commands” on page 146 .
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FORMat Subsystem
FORMat Subsystem
The FORMat subsystem sets a data format for transferring numeric and array information.
Byte Order
:FORMat:BORDer NORMal|SWAPped
:FORMat:BORDer?
Selects the binary data byte order for numeric data transfer. In normal mode the most significant byte is sent first. In swapped mode the least significant byte is first. (PCs use the swapped order.) Binary data byte order functionality does not apply to ASCII.
Factory Preset: Normal
Remarks: You must be in the Basic, cdma2000, 1xEV-DO,
W-CDMA, GSM (w/EDGE), NADC, or PDC mode to use this command. Use INSTrument:SELect to set the mode.
Numeric Data Format
:FORMat[:DATA] ASCii|REAL,32|REAL,64
:FORMat[:DATA]?
VSA application modes: This command controls the format of data input/output, that is any data transfer across any remote port. The
REAL and ASCII formats will format data in the current display units.
The format of state data cannot be changed. It is always in a machine readable format only.
ASCII - Amplitude values are in ASCII, in amplitude units, separated by commas. ASCII format requires more memory than the binary formats. Therefore, handling large amounts of this type of data, will take more time and storage space.
Real,32 or Real,64 - Binary 32-bit (or 64-bit) real values in amplitude unit, in a definite length block. Transfers of real data are done in a binary block format.
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iDEN Programming Commands
FORMat Subsystem
A definite length block of data starts with an ASCII header that begins with # and indicates how many additional data points are following in the block. Suppose the header is #512320.
• The first digit in the header (5) tells you how many additional digits/bytes there are in the header.
• The 12320 means 12 thousand, 3 hundred, 20 data bytes follow the header.
• Divide this number of bytes by your selected data format bytes/point, either 8 (for real 64), or 4 (for real 32). In this example, if you are using real 64 then there are 1540 points in the block.
Example: FORM REAL,64
Factory Preset: ASCII
140 Chapter 5
iDEN Programming Commands
INITiate Subsystem
INITiate Subsystem
The INITiate subsystem is used to initiate a trigger for a measurement.
They only initiate measurements from the MEASURE front panel key or the
“MEASure Group of Commands” on page 146 . Refer to the
TRIGger and ABORt subsystems for related commands.
Take New Data Acquisition for Selected Measurement
:INITiate:<measurement>
This command initiates a trigger cycle for the measurement specified, but does not return data. The available measurement names are described in the MEASure subsystem.
If your selected measurement is not currently active it will change to the measurement in your INIT:<meas> command and initiate a trigger cycle.
Example: INIT:ACP
Continuous or Single Measurements
:INITiate:CONTinuous OFF|ON|0|1
:INITiate:CONTinuous?
Selects whether a trigger is continuously initiated or not. Each trigger initiates a single, complete, measurement operation.
When set to ON another trigger cycle is initiated at the completion of each measurement.
When set to OFF, the trigger system remains in the “idle” state until an
INITiate[:IMMediate] command is received. On receiving the
INITiate[:IMMediate] command, it will go through a single trigger/measurement cycle, and then return to the “idle” state.
Example: INIT:CONT ON
Factory Preset: On
*RST:
Front Panel
Access:
Off (recommended for remote operation)
Meas Control
,
Measure Cont Single
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iDEN Programming Commands
INITiate Subsystem
Take New Data Acquisitions
:INITiate[:IMMediate]
The instrument must be in the single measurement mode. If
INIT:CONT is ON, then the command is ignored. The desired measurement must be selected and waiting. The command causes the system to exit the “waiting” state and go to the “initiated” state.
The trigger system is initiated and completes one full trigger cycle. It returns to the “waiting” state on completion of the trigger cycle.
Depending upon the measurement and the number of averages, there may be multiple data acquisitions, with multiple trigger events, for one full trigger cycle.
This command triggers the instrument, if external triggering is the type of trigger event selected. Otherwise, the command is ignored. Use the TRIGer[:SEQuence]:SOURce EXT command to select the external trigger.
Example:
Remarks:
INIT:IMM
See also the *TRG command and the TRIGger subsystem.
Front Panel
Access:
Meas Control, Measure Cont Single
Restart the Measurement
:INITiate:RESTart
This command applies to measurements found in the MEASURE menu.
It restarts the current measurement from the “idle” state regardless of its current operating state. It is equivalent to:
INITiate[:IMMediate]
ABORt (for continuous measurement mode)
Example:
Front Panel
Access:
INIT:REST
Restart
or
Meas Control
,
Restart
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iDEN Programming Commands
INSTrument Subsystem
INSTrument Subsystem
This subsystem includes commands for querying and selecting instrument measurement (personality option) modes.
Catalog Query
For E4406A :INSTrument:CATalog[:FULL]?
Returns a comma separated list of strings which contains the names of all the installed applications. These names can only be used with the
INST:SELECT
command.
For E4406A if the optional keyword FULL is specified, each name is immediately followed by its associated instrument number. These instrument numbers can only be used with the INST:NSELect command.
Example:
(E4406A) INST:CAT:FULL?
Query response:
”BASIC”8,“GSM”3,”CDMA”4,”SERVICE”1
Select Application by Number
:INSTrument:NSELect <integer>
:INSTrument:NSELect?
Select the measurement mode by its instrument number. The actual available choices depends upon which applications are installed in the instrument. For E4406A these instrument numbers can be obtained with INST:CATalog:FULL?
1 = SERVICE (E4406)
3 = GSM (E4406)
4 = CDMA (cdmaOne) (E4406/PSA)
5 = NADC (E4406/PSA)
6 = PDC (E4406/PSA)
8 = BASIC (E4406/PSA)
9 = WCDMA (W-CDMA with HSDPA/HSUPA) (E4406/PSA)
10 = CDMA2K (cdma2000 with 1xEV-DV) (E4406/PSA)
11 = IDEN (E4406)
Chapter 5 143
NOTE
iDEN Programming Commands
INSTrument Subsystem
12 = WIDEN (E4406)
13 = EDGEGSM (E4406/PSA)
15 = CMDA1XEV (1xEV-D0) (E4406/PSA)
If you are using the SCPI status registers and the analyzer mode is changed, the status bits should be read, and any errors resolved, prior to switching modes. Error conditions that exist prior to switching modes cannot be detected using the condition registers after the mode change.
This is true unless they recur after the mode change, although transitions of these conditions can be detected using the event registers.
Changing modes resets all SCPI status registers and mask registers to their power-on defaults. Hence, any event or condition register masks must be re-established after a mode change. Also note that the power up status bit is set by any mode change, since that is the default state after power up.
Example: INST:NSEL 4
Factory Preset: Persistent state with factory default of 8
(E4406A, BASIC)
Range: 1 to x, where x depends upon which applications are installed.
Front Panel
Access:
MODE
Select Application
VSA E4406A:
:INSTrument[:SELect]
BASIC|SERVICE|CDMA|CDMA2K|GSM|EDGEGSM|IDEN|
WIDEN|NADC|PDC|WCDMA|CDMA1XEV
:INSTrument[:SELect]?
Select the measurement mode. The actual available choices depend upon which modes (measurement applications) are installed in the instrument. A list of the valid choices is returned with the INST:CAT? query.
Once an instrument mode is selected, only the commands that are valid for that mode can be executed.
1 = SERVICE (E4406)
3 = GSM (E4406)
144 Chapter 5
NOTE
iDEN Programming Commands
INSTrument Subsystem
4 = CDMA (cdmaOne) (E4406/PSA)
5 = NADC (E4406/PSA)
6 = PDC (E4406/PSA)
8 = BASIC (E4406/PSA)
9 = WCDMA (W-CDMA with HSDPA/HSUPA) (E4406/PSA)
10 = CDMA2K (cdma2000 with 1xEV-DV) (E4406/PSA)
11 = IDEN (E4406)
12 = WIDEN (E4406)
13 = EDGEGSM (E4406/PSA)
15 = CMDA1XEV (1xEV-D0) (E4406/PSA)
If you are using the status bits and the analyzer mode is changed, the status bits should be read, and any errors resolved, prior to switching modes. Error conditions that exist prior to switching modes cannot be detected using the condition registers after the mode change. This is true unless they recur after the mode change, although transitions of these conditions can be detected using the event registers.
Changing modes resets all SCPI status registers and mask registers to their power-on defaults. Hence, any event or condition register masks must be re-established after a mode change. Also note that the power up status bit is set by any mode change, since that is the default state after power up.
Factory Preset:
(E4406A) Persistent state with factory default of Basic mode.
Front Panel
Access:
MODE
Chapter 5 145
iDEN Programming Commands
MEASure Group of Commands
MEASure Group of Commands
This group includes commands used to make measurements and return results. The different commands can be used to provide fine control of the overall measurement process. Most measurements should be done in single measurement mode, rather than doing the measurement continuously.
Each measurement sets the instrument state that is appropriate for that measurement. Other commands are available for each
MODE
to allow changing settings, view, limits, etc. Refer to:
SENSe:<measurement>, SENSe:CHANnel, SENSe:CORRection,
SENSe:FREQuency, SENSe:POWer, SENSe:RADio, SENSe:SNYC
CALCulate:<measurement>, CALCulate:CLIMits/DATA
DISPlay:<measurement>
TRIGger
Measure Commands
:MEASure:<measurement>[n]?
This is a fast single-command way to make a measurement using the factory default instrument settings. These are the settings and units that conform to the Standard.
• Stops the current measurement and sets up the instrument for the specified measurement using the factory defaults
• Initiates the data acquisition for the measurement
• Blocks other SCPI communication, waiting until the measurement is complete before returning results.
• After the data is valid it returns the scalar results, or the trace data, for the specified measurement.
If the optional [n] value is not included, or is set to 1, the scalar measurement results will be returned. If the [n] value is set to ŠŠa value other than 1, the selected trace data results will be returned.
See each command for details of what types of scalar results or trace data results are available. The binary data formats should be used for handling large blocks of data since they are smaller and faster then the ASCII format.
146 Chapter 5
Figure 5-4
iDEN Programming Commands
MEASure Group of Commands
If you need to change some of the measurement parameters from the factory default settings you can set up the measurement with the
CONFigure command. Use the commands in the
SENSe:<measurement> and CALCulate:<measurement> subsystems to change the settings. Then you can use the READ? command, or the
INITiate and FETCh? commands, to initiate the measurement and
query the results. See Figure 5-4
.
If you need to repeatedly make a given measurement with settings other than the factory defaults, you can use the commands in the
SENSe:<measurement> and CALCulate:<measurement> subsystems to set up the measurement. Then use the READ? command or INITiate and FETCh? commands, to initiate the measurement and query results.
Measurement settings persist if you initiate a different measurement and then return to a previous one. Use READ:<measurement>? if you want to use those persistent settings. If you want to go back to the default settings, use MEASure:<measurement>?.
Measurement Group of Commands
Configure Commands
:CONFigure:<measurement>
This command sets up the instrument for the specified measurement using the factory default instrument settings and stops the current measurement. It does not initiate the taking of measurement data.
The CONFigure? query returns the current measurement name.
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MEASure Group of Commands
Fetch Commands
:FETCh:<measurement>[n]?
This command puts valid data into the output buffer, but does not initiate data acquisition. Use the INITiate[:IMMediate] command to acquire data before you use the FETCh command. You can only fetch results from the measurement that is currently selected.
If the optional [n] value is not included, or is set to 1, the scalar measurement results will be returned. If the [n] value is set to Ša value other than 1, the selected trace data results will be returned. See each command for details of what types of scalar results or trace data results are available. The binary data formats should be used for handling large blocks of data since they are smaller and faster then the ASCII format.
Read Commands
:READ:<measurement>[n]?
• Does not preset the measurement to the factory defaults. (The
MEASure? command does preset.) It uses the settings from the last measurement.
• Initiates the measurement and puts valid data into the output buffer. If a measurement other than the current one is specified, the instrument will switch to that measurement before it initiates the measurement and returns results.
• Blocks other SCPI communication, waiting until the measurement is complete before returning the results
If the optional [n] value is not included, or is set to 1, the scalar measurement results will be returned. If the [n] value is set to Ša value other than 1, the selected trace data results will be returned.
See each command for details of what types of scalar results or trace data results are available. The binary data formats should be used when handling large blocks of data since they are smaller and faster then the ASCII format.
Measurement settings persist if you initiate a different measurement and then return to a previous one. Use READ:<measurement>? if you want to use those persistent settings. If you want to go back to the default settings, use MEASure:<measurement>?.
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MEASure Group of Commands
Adjacent Channel Power Ratio (ACPR) Measurement
This measures the total rms power in the specified channel and in 5 offset channels. You must be in iDEN mode to use these commands. Use
INSTrument:SELect to set the mode.
The general functionality of CONFigure, FETCh, MEASure, and READ are described at the beginning of this section. See the SENSe:ACP commands for more measurement related commands.
:CONFigure:ACPR
:FETCh:ACPR[n]?
:READ:ACPR[n]?
:MEASure:ACPR[n]?
For Basic mode, a channel frequency and power level can be defined in the command statement to override the default standard setting. A comma must precede the power value as a place holder for the frequency, when no frequency is sent.
Added to Basic mode, version A.03.00 or later History:
Front Panel
Access:
Measure, ACPR
After the measurement is selected, press
Restore Meas
Defaults
to restore factory defaults.
Measurement Results Available
Measurement
Type n Results Returned
0 n=1 (or not specified)
NADC and
PDC mode
Returns unprocessed I/Q trace data, as a series of trace point values, in volts. The I values are listed first in each pair, using the 0 through even-indexed values. The Q values are the odd-indexed values.
Returns 22 scalar results, in the following order:
1. Center frequency – absolute power (dBm)
2. Center frequency – absolute power (W)
3. Negative offset frequency (1) – relative power (dB)
4. Negative offset frequency (1) – absolute power (dBm)
5. Positive offset frequency (1) – relative power (dB)
6. Positive offset frequency (1) – absolute power (dBm)
. . .
1. Positive offset frequency (5) – relative power (dB)
2. Positive offset frequency (5) – absolute power (dBm)
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MEASure Group of Commands
Measurement
Type n
not specified or n=1 iDEN,
WiDEN mode
Results Returned
Returns 11 comma-separated scalar results for iDEN and 19 comma-separated scalar results for WiDEN, in the following order:
1. Center freq – relative power (dB)
2. Center freq – absolute power (dBm)
3. Lower offset freq – relative power (dB)
4. Lower offset freq– absolute power (dBm)
5. Upper offset freq – relative power (dB)
6. Upper offset freq – absolute power (dBm)
7. Total power (dBm)
8. Offset frequency (Hz)
9. Reference BW (Hz)
10. Offset BW (Hz)
11. Reserved for future use.
12. Reserved for future use.
13. Carrier/center frequency (Hz)
14. Lower offset freq of offset B – relative power (dB). If the carrier is selected any options except 50 kHz outer, returns
–999. (WiDEN mode only)
15. Lower offset freq of offset B – absolute power (dBm). If the carrier is selected any options except 50 kHz outer, returns
–999. (WiDEN mode only)
16. Upper offset freq of offset B – relative power (dB). If the carrier is selected any options except 50 kHz outer, returns
–999. (WiDEN mode only)
17. Upper offset freq of offset B – absolute power (dBm). If the carrier is selected any options except 50 kHz outer, returns
–999. (WiDEN mode only)
18. Offset frequency of offset B (Hz). if the carrier is selected any options except 50 kHz outer, returns –999. (WiDEN mode only)
19. Offset BW for of offset B (Hz). If the carrier is selected any options except 50 kHz outer, returns –999. (WiDEN mode only)
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MEASure Group of Commands
Measurement
Type
Total power reference
n Results Returned
n=1 (or not specified)
Basic, cdmaOne, cdma2000,
W-CDMA mode
Returns 24 scalar results, in the following order:
1. Center frequency - relative power (dB)
2. Center frequency - absolute power (dBm)
3. Center frequency - relative power (dB) (same as value 1)
4. Center frequency - absolute power (dBm) (same as value 2)
5. Negative offset frequency (1) - relative power (dB),
6. Negative offset frequency (1) - absolute power (dBm)
7. Positive offset frequency (1) - relative power (dB)
8. Positive offset frequency (1) - absolute power (dBm)
. . .
1. Positive offset frequency (5) - relative power (dB)
2. Positive offset frequency (5) - absolute power (dBm)
Power spectral density reference
NOTE
Center frequency relative power is relative to the center frequency absolute power and therefore, is always equal to 0.00 dB.
n=1 (or not specified)
Basic, cdmaOne, cdma2000,
W-CDMA mode
Returns 24 scalar results, in the following order:
1. Center frequency - relative power (dB)
2. Center frequency - absolute power (dBm/Hz)
3. Center frequency - relative power (dB) (same as value 1)
4. Center frequency - absolute power (dBm/Hz) (same as value
2)
5. Negative offset frequency (1) - relative power (dB)
6. Negative offset frequency (1) - absolute power (dBm/Hz)
7. Positive offset frequency (1) - relative power (dB)
8. Positive offset frequency (1) - absolute power (dBm/Hz)
. . .
1. Positive offset frequency (5) - relative power (dB)
2. Positive offset frequency (5) - absolute power (dBm/Hz)
NOTE
Center frequency relative power is relative to the center frequency absolute power and therefore, is always equal to 0.00 dB.
2
NADC and
PDC mode
Returns 10 scalar values of the pass/fail (0 = passed, or
1 = failed) results determined by testing the absolute power of the offset frequencies:
1. Negative offset frequency (1) absolute power
2. Positive offset frequency (1) absolute power
. . .
1. Negative offset frequency (5) absolute power
2. Positive offset frequency (5) absolute power
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MEASure Group of Commands
Measurement
Type n
Total power reference
Results Returned
2 iDEN,
WiDEN mode
Returns comma-separated scalar values of the histogram absolute power trace, 3 values for iDEN and 6 values for
WiDEN. The elements of the array are different according to the following two conditions:
(case a) The actual carrier config is 50 kHz outer (WiDEN mode only):
1. Lower offset frequency of offset A – absolute power (dBm)
(WiDEN mode only)
2. Reference frequency – absolute power (dBm). (WiDEN mode only)
3. Lower offset frequency of offset B – absolute power (dBm).
(WiDEN mode only)
4. Upper offset frequency of offset B – absolute power (dBm).
(WiDEN mode only)
5. Reference frequency – absolute power (dBm) – duplicated.
(WiDEN mode only)
6. Upper offset frequency of offset A – absolute power (dBm).
(WiDEN mode only)
(case b) Otherwise
1. Lower offset frequency of offset A – absolute power (dBm).
2. Reference frequency – absolute power (dBm).
3. Upper offset frequency of offset A – absolute power (dBm).
4. Returns –999. (WiDEN mode only)
5. Returns –999. (WiDEN mode only)
6. Returns –999. (WiDEN mode only)
Returns 11 scalar values (in dBm) corresponding to the total power histogram display. The values are returned in ascending frequency order:
2
Basic, cdmaOne, cdma2000,
W-CDMA mode
1. Negative offset frequency (5)
2. Negative offset frequency (4)
3. Negative offset frequency (3)
. . .
1. Center frequency
2. Positive offset frequency (1)
3. Positive offset frequency (2)
. . .
1. Positive offset frequency (5)
152 Chapter 5
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MEASure Group of Commands
Measurement
Type n Results Returned
3
NADC and
PDC mode
3 iDEN,
WiDEN mode
Returns 10 scalar values of the pass/fail (0 = passed, or
1 = failed) results determined by testing the relative power of the offset frequencies:
1. Negative offset frequency (1) relative power
2. Positive offset frequency (1) relative power
. . .
1. Negative offset frequency (5) relative power
2. Positive offset frequency (5) relative power
Returns comma-separated scalar values of the histogram relative power trace, 3 values for iDEN and 6 values for
WiDEN. The elements of the array are different according to the following two conditions:
(case a) The actual carrier config is 50 kHz outer (WiDEN mode only):
1. Lower offset frequency of offset A – relative power (dBc)
(WiDEN mode only)
2. Reference frequency – relative power (dBc). (WiDEN mode only)
3. Lower offset frequency of offset B – relative power (dBc).
(WiDEN mode only)
4. Upper offset frequency of offset B – relative power (dBc).
(WiDEN mode only)
5. Reference frequency – relative power (dBc) – duplicated.
(WiDEN mode only)
6. Upper offset frequency of offset A – relative power (dBc).
(WiDEN mode only)
(case b) Otherwise
1. Lower offset frequency of offset A – relative power (dBc).
2. Reference frequency – relative power (dBc).
3. Upper offset frequency of offset A – relative power (dBc).
4. Returns –999. (WiDEN mode only)
5. Returns –999. (WiDEN mode only)
6. Returns –999. (WiDEN mode only)
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MEASure Group of Commands
Measurement
Type
Power spectral density reference
n Results Returned
3
Basic, cdmaOne, cdma2000,
W-CDMA mode
Returns 11 scalar values (in dBm/Hz) corresponding to the power spectral density histogram display. The values are returned in ascending frequency order:
1. Negative offset frequency (5)
2. Negative offset frequency (4)
. . .
1. Center frequency
2. Positive offset frequency (1)
. . .
4
NADC and
PDC mode
4 iDEN,
WiDEN mode
1. Positive offset frequency (5)
Returns the frequency-domain spectrum trace (data array) for the entire frequency range being measured.
In order to return spectrum data, the ACP display must be in the spectrum view and you must not turn off the spectrum trace.
Returns comma-separated absolute power results for the reference and offset channels, 4 values for iDEN and 6 values for WiDEN.
Reference channel
− absolute power.
Reference channel
− absolute power (duplicate of above).
Lower offset channel of offset A
− absolute power (dBm).
Upper offset channel of offset A
− absolute power (dBm).
Lower offset channel of offset B
− absolute power (dBm). If the carrier is selected any options except 50 kHz outer, returns –999. (WiDEN mode only)
Upper offset channel of offset B
− absolute power (dBm). If the carrier is selected any options except 50 kHz outer, returns –999. (WiDEN mode only)
154 Chapter 5
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MEASure Group of Commands
Measurement
Type
(For cdma2000 and W-CDMA the data is only available with spectrum display selected)
Total power reference
n Results Returned
4
Basic, cdmaOne, cdma2000,
W-CDMA mode
Returns the frequency-domain spectrum trace data for the entire frequency range being measured.
With the spectrum view selected
(DISPlay:ACP:VIEW SPECtrum) and the spectrum trace on
(SENSe:ACP:SPECtrum:ENABle):
• In FFT mode (SENSe:ACP:SWEep:TYPE FFT) the number of trace points returned are 343 (cdma2000) or 1715
(W-CDMA). This is with the default span of 5 MHz
(cdma2000) or 25 MHz (W-CDMA). The number of points also varies if another offset frequency is set.
• In sweep mode (SENSe:ACP:SWEep:TYPE SWEep), the number of trace points returned is 601 (for cdma2000 or
W-CDMA) for any span.
With bar graph display selected, one point of –999.0 will be returned.
5 iDEN,
WiDEN mode
Returns comma-separated relative power results for the reference and offset channels, 4 values for iDEN and 6 values for WiDEN.
Reference channel
− relative power.
Reference channel
− relative power (duplicate of above).
Lower offset channel of offset A
− relative power (dBc).
Upper offset channel of offset A
− relative power (dBc).
Lower offset channel of offset B
− relative power (dBc). If the carrier is selected any options except 50 kHz outer, returns
–999. (WiDEN mode only)
Upper offset channel of offset B
− relative power (dBc). If the carrier is selected any options except 50 kHz outer, returns
–999. (WiDEN mode only)
5
Basic, cdmaOne, cdma2000,
W-CDMA mode
Returns 12 scalar values (in dBm) of the absolute power of the center and the offset frequencies:
1. Upper adjacent chan center frequency
2. Lower adjacent chan center frequency
3. Negative offset frequency (1)
4. Positive offset frequency (1)
. . .
1. Negative offset frequency (5)
2. Positive offset frequency (5)
Chapter 5 155
iDEN Programming Commands
MEASure Group of Commands
Measurement
Type
Power spectral density reference
Total power reference
n Results Returned
5
Basic, cdmaOne, cdma2000,
W-CDMA mode
Returns 12 scalar values (in dBm/Hz) of the absolute power of the center and the offset frequencies:
1. Upper adjacent chan center frequency
2. Lower adjacent chan center frequency
3. Negative offset frequency (1)
4. Positive offset frequency (1)
. . .
1. Negative offset frequency (5)
2. Positive offset frequency (5)
6 iDEN,
WiDEN mode
Returns comma-separated pass(0)/fail(1) test results for the absolute power of the reference and offset channels, 4 values for iDEN and 6 values for WiDEN.
Reference channel
− absolute power pass/fail (returned as always PASSED).
Reference channel
− absolute power pass/fail (returned as always PASSED) (duplicate of above).
Lower offset channel of offset A
− absolute power pass/fail.
Upper offset channel of offset A
− absolute power pass/fail.
Lower offset channel of offset B
− absolute power pass/fail. If the carrier is selected any options except 50 kHz outer, returns 0 (passed). (WiDEN mode only)
Upper offset channel of offset B
− absolute power pass/fail. If the carrier is selected any options except 50 kHz outer, returns 0/Passed. (WiDEN mode only)
6
Basic, cdmaOne, cdma2000,
W-CDMA mode
Returns 12 scalar values (total power in dB) of the power relative to the carrier at the center and the offset frequencies:
1. Upper adjacent chan center frequency
2. Lower adjacent chan center frequency
3. Negative offset frequency (1)
4. Positive offset frequency (1)
5. Negative offset frequency (5)
. . .
1. Negative offset frequency (5)
2. Positive offset frequency (5)
156 Chapter 5
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MEASure Group of Commands
Measurement
Type
Power spectral density reference
Total power reference
n Results Returned
6
Basic, cdmaOne, cdma2000,
W-CDMA mode
Returns 12 scalar values (power spectral density in dB) of the power relative to the carrier at the center and offset frequencies:
1. Upper adjacent chan center frequency
2. Lower adjacent chan center frequency
3. Negative offset frequency (1)
4. Positive offset frequency (1)
. . .
1. Negative offset frequency (5)
2. Positive offset frequency (5)
7 iDEN,
WiDEN mode
Returns comma-separated pass(0)/fail(1) test results for the relative power of the reference and offset channels, 4 values for iDEN and 6 values for WiDEN.
Reference channel
− relative power pass/fail (returned as always PASSED).
Reference channel
− relative power pass/fail (returned as always PASSED) (duplicate of above).
Lower offset channel of offset A
− relative power pass/fail.
Upper offset channel of offset A
− relative power pass/fail.
Lower offset channel of offset B
− relative power pass/fail. If the carrier is selected any options except 50 kHz outer, returns 0 (passed). (WiDEN mode only)
Upper offset channel of offset B
− relative power pass/fail. If the carrier is selected any options except 50 kHz outer, returns 0/Passed. (WiDEN mode only)
Returns 12 scalar values of the pass/fail (0 = passed, or
1 = failed) results determined by testing the absolute power limit of the center and offset frequencies (measured as total power in dB):
7
Basic, cdmaOne, cdma2000,
W-CDMA mode
1. Upper adjacent chan center frequency
2. Lower adjacent chan center frequency
3. Negative offset frequency (1)
4. Positive offset frequency (1)
. . .
1. Negative offset frequency (5)
2. Positive offset frequency (5)
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MEASure Group of Commands
Measurement
Type
Power spectral density reference
Total power reference
Power spectral density reference
n Results Returned
7
Basic, cdmaOne, cdma2000,
W-CDMA mode
Returns 12 scalar values of the pass/fail (0 = passed, or
1 = failed) results determined by testing the absolute power limit of the center and offset frequencies (measured as power spectral density in dB):
1. Upper adjacent chan center frequency
2. Lower adjacent chan center frequency
3. Negative offset frequency (1)
4. Positive offset frequency (1)
. . .
1. Negative offset frequency (5)
2. Positive offset frequency (5)
8
Basic, cdmaOne, cdma2000,
W-CDMA mode
Returns 12 scalar values of the pass/fail (0 = passed, or
1 = failed) results determined by testing the power limit relative to the center frequency (measured as total power spectral in dB):
1. Upper adjacent chan center frequency
2. Lower adjacent chan center frequency
3. Negative offset frequency (1)
4. Positive offset frequency (1)
. . .
1. Negative offset frequency (5)
2. Positive offset frequency (5)
8
Basic, cdmaOne, cdma2000,
W-CDMA mode
Returns 12 scalar values of the pass/fail (0 = passed, or
1 = failed) results determined by testing the power limit relative to the center frequency (measured as power spectral density in dB):
1. Upper adjacent chan center frequency
2. Lower adjacent chan center frequency
3. Negative offset frequency (1)
4. Positive offset frequency (1)
N=8 iDEN,
WiDEN mode
. . .
1. Negative offset frequency (5)
2. Positive offset frequency (5)
Returns a single pass(0)/fail(1) test result that reflects composite pas/fail results which is determined according to
[:SENSe]:ACPR:OFFSet:TEST. This allows a quick way to determine if the test passed without the need to query several bits.
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MEASure Group of Commands
Bit Error Rate Measurement
This tests for bit errors in the demodulated signal. You must be in the iDEN or WiDEN mode to use these commands. Use
INSTrument:SELect to set the mode.
The general functionality of CONFigure, FETCh, MEASure, and READ are described at the beginning of this section. See the SENSe:BER commands for more measurement related commands.
:CONFigure:BER
:INITiate:BER
:FETCh:BER[n]?
:READ:BER[n]?
:MEASure:BER[n]?
History:
Front Panel
Access:
Version A.03.00 or later
Measure, Bit Error Rate
After the measurement is selected, press
Restore Meas
Defaults
to restore factory defaults.
Measurement Results Available n
0 iDEN or WiDEN mode
Results Returned
Returns unprocessed I/Q trace data, as a series of comma-separated trace point values, in volts. The I values are listed first in each pair, using the 0 through even-indexed values. The Q values are the odd-indexed values.
Chapter 5 159
n
n=1 (or not specified) iDEN mode n=1 (or not specified)
WiDEN mode
2 iDEN mode
2
WiDEN mode iDEN Programming Commands
MEASure Group of Commands
Results Returned
Returns these 18 comma-separated scalar results in the following order:
1. Total bit error rate (BER in %)
2. Total number of bits tested
3. Total number of bits failed
4. Total number of frames tested
5. Total number of frames attempted to find
6. Current frame word found
7. Bit error rate for current word
8. Measured carrier frequency
9. Calculated center frequency error
10. Frequency span
11. Average count
12. EVM for first sub-channel
13. EVM for second sub-channel
14. EVM for third sub-channel
15. EVM for fourth sub-channel
16. Composite RMS EVM of all subchannels
17. Residual BER
18. Frame Erasure Rate FER
Returns these 13 comma-separated scalar results in the following order:
1. Total bit error rate (BER in %) of composite carriers
2. Total number of bits tested of composite carriers
3. Total number of bits failed of composite carriers
4. Total number of slots tested
5. Total number of slots attempted to find
6. Bit error rate for current word of composite carriers
7. Measured composite carrier center frequency
8. Calculated center frequency error of composite carriers
9. Frequency span of composite carriers
10. Composite RMS EVM of composite carriers
11. Residual BER
12. Slot Erasure Rate (SER)
13. Pass/Fail of the test
Returns unprocessed frame I/Q data, as a data array of comma-separated trace point values, in volts.
Returns results for Carrier #0, as a data array of comma-separated values by following order:
1. Current slot word found
2. Bit error rate for current word
3. Composite RMS EVM of all subchannels
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3
WiDEN mode
4
WiDEN mode
Results Returned
Returns results for Carrier #1, as a data array of comma-separated values by following order:
1. Current slot word found. If this carrier is inactive, returns –999.
2. Bit error rate for current word. If this carrier is inactive, returns –999.
3. Composite RMS EVM of all subchannels. If this carrier is inactive, returns –999.
Returns results for Carrier #2, as a data array of comma-separated values by following order:
1. Current slot word found. If this carrier is inactive, returns –999.
2. Bit error rate for current word. If this carrier is inactive, returns –999.
3. Composite RMS EVM of all subchannels. If this carrier is inactive, returns –999.
Returns the Max EVM of the subchannels.
5 iDEN mode
5
WiDEN mode
6 a iDEN mode
6
WiDEN mode actual carrier config is 25 kHz
6
WiDEN mode actual carrier config is any other than
25 kHz
Returns results for Carrier #3, as a data array of comma-separated values by following order:
1. Current slot word found. If this carrier is inactive, returns –999.
2. Bit error rate for current word. If this carrier is inactive, returns –999.
3. Composite RMS EVM of all subchannels. If this carrier is inactive, returns –999.
Returns the results of a PvT test. 1 = Pass and 0 = Fail, one results for each frame tested. For example, if Frame Count is set to 16, there are 16 comma-separated 0 s or 1 s.
Returns the Max EVM of the subchannels, as a data array of comma-separated values by the following order:
1. EVM for the first sub-channel
2. EVM for the second sub-channel
3. EVM for the third sub-channel
4. EVM for the fourth sub-channel
Returns the Max EVM of the each carrier, as a 4-element data array of comma-separated values by the following order:
1. EVM for the Carrier #0.
2. EVM for the Carrier #1. If the carrier is inactive (at the 50 kHz outer config), returns –999.
3. EVM for the Carrier #2. If the carrier is inactive (at the 50 kHz, or 50 kHz outer config), returns –999.
4. EVM for the Carrier #3. If the carrier is inactive (at the 50 kHz or 75 kHz config), returns –999.
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7 iDEN mode
7
WiDEN mode
Returns the points in microseconds that either fail the power mask or are closest to the power mask. One result for each frame tested. If the PvT test is pass, the point that has the smallest margin is returned. If the PvT test is fail, the first point that fails the power mask is returned. For example,
Frame Count is set to 4, and the 3rd frame fails the mask at 720
µs, the other frames pass and have the smallest margin at 150
µs, 200 µs, and 630 µs respectful. Then the results returned will be 1.5e2, 2.0e2, 7.2e2, 6.3e2.
Returns the result of PvT test for the composite waveform (trace data preceding and following the SGC region of the trace) and for the MIN/MAX waveform of carrier #0 through #3 in the SGC trace region. 1 = Pass and
0 = Fail, one result for each slot tested. For example, if slot count is set to 16, there are 16 comma-separated 0s or 1s.
8 iDEN mode
8
WiDEN mode
9
WiDEN mode
Returns the margin (in dB) of the PvT test. One result for each frame tested.
Refer to the example above, the 3rd frame fails the mask at 720
µs with
–3.2 dB margin (3.2 dB above the limit), the other frames have the smallest margin at 150
µs with 3.5 dB margin, 200 µs with 2.7 dB margin, 630 µs with 3.1 dB margin, 150
µs with 3.5 dB margin respectively. Then the results returned will be 3.5, 2.7, –3.2, 3.1.
Returns the points in microseconds that either fail the power mask or are closest to the power mask for the composite waveform (trace data preceding and following the SGC region of the trace) and for the MIN/MAX waveform of carrier #0 through #3 in the SGC trace region. One result for each slot tested.
If the PvT test is pass, the point that has the smallest margin is returned. If the PvT test is fail, the first point that fails the power mask is returned. For example, Slot Count is set to 4, and the 3rd slot fails the mask at 720 us, the other slots pass and have the smallest margin at 150 us, 200 us, and 630 us respectively, then the results returned will be 1.5e2, 2.0e2, 7.2e2, 6.3e2.
Returns the margin of PvT test for the composite waveform (trace data preceding and following the SGC region of the trace) and for the MIN/MAX waveform of carrier #0 through #3 in the SGC trace region. One result for each slot tested. Refer to the example of n=8, the 3rd slot fails the mask at
720 us with –3.2 dB margin (3.2 dB over the limit), the other slots have the smallest margin at 150 us with 3.5 dB margin, 200 us with 2.7 dB margin,
630 us with 3.1 dB margin, respectively. Then the results returned will be
3.5, 2.7,
−3.2, 3.1.
Returns an array of 4 elements denoting the relative power of each carrier
(#0,#1, #2 and #3) for the latest slot. If this carrier is inactive, returns –999.
10
WiDEN mode
11
WiDEN mode
Returns a single pass(0)/fail(1) test result that reflects the “OR” of all individual pass/fail bits (see n=1 and n=7). This allows a quick way to determine if the test passed without the need to query several bits.
a. Sub-opcode 6 tell pass/fail, sub-opcode 7 tells where in time, sub-opcode tells by how much. Sub-opcodes 6, 7, and 8 should be used together to retrieve PvT test results.
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Occupied Bandwidth Measurement
This measures the bandwidth of the carrier signal in the occupied part of the channel. You must be in the PDC, iDEN (E4406A only), WiDEN
(E4406A only), cdma2000, W-CDMA, or 1xEV-DO mode to use these commands. Use INSTrument:SELect to set the mode.
The general functionality of CONFigure, FETCh, MEASure, and READ are described at the beginning of this section. See the SENSe:OBW commands for more measurement related commands.
:CONFigure:OBW
:INITiate:OBW
:FETCh:OBW[n]?
:READ:OBW[n]?
:MEASure:OBW[n]?
History: E4406A:
Version A.02.00 or later
Widen is available on Version A.07.05 or later
Front Panel
Access:
Measure
,
Occupied BW
After the measurement is selected, press
Restore Meas
Defaults
to restore factory defaults.
n
0
0
WiDEN mode
E4406A
1 (default) cdma2000,
W-CDMA mode
1 (default)
PDC
Measurement results available
Results Returned
Returns unprocessed I/Q trace data, as a data array of trace point values, in volts.
Returns unprocessed I/Q trace data, as a series of comma-separated trace points, in volts. The I values are listed first in each pair, using the 0 through even-indexed values. The Q values are the odd-indexed values.
Returns scalar results, in the following order:
1. Occupied bandwidth - Hz
2. Absolute Carrier Power - dBm
Returns scalar results, in the following order:
1. Occupied bandwidth - kHz
2. Absolute Carrier Power - dBm
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1 (default)
1xEV-DO mode
1 (default) iDEN mode
E4406A
1 (default)
WiDEN mode
E4406A
Results Returned
Returns scalar results, in the following order:
1. Occupied bandwidth - Hz
2. Absolute Carrier Power - dBm
3. Span - Hz
4. Spectrum Trace Points - points
5. Res BW - Hz
Returns 7 comma-separated scalar results, in the following order.
1. Bandwidth for specified power percentage (Hz)
2. Absolute power of occupied bandwidth (dBm)
3. PSD of occupied bandwidth (dB)
4. Power percentage
5. Measured carrier frequency after centroid. (Hz)
6. Frequency span (Hz)
7. Average count
Returns 8 comma-separated scalar results, in the following order.
1. Bandwidth for specified power percentage (Hz)
2. Absolute power of occupied bandwidth (dBm)
3. PSD of occupied bandwidth (dB)
4. Power percentage
5. Measured carrier frequency after centroid. (Hz)
6. Frequency span (Hz)
7. Average count
8. Delta Freq (computed as Fcentroid – Fcenter)
Returns the frequency-domain spectrum trace (data array) for the entire frequency range being measured.
2
PDC, cdma2000,
W-CDMA,
1xEV-DO mode n2, spectrum display only iDEN or WiDEN mode
E4406A
3
WiDEN mode
E4406A
Returns the frequency-domain spectrum trace (data array) for the entire frequency range being measured.
Returns a single pass(0)/fail(1) test result. This allows a quick way to determine if the test passed without the need to parse several values.
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0 iDEN Programming Commands
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Power vs. Time Measurement
For E4406A this measures the average power during the “useful part” of the burst comparing the power ramp to required timing mask. You must be in EDGE, GSM, 1xEV-DO or Service mode to use these commands. Use INSTrument:SELect to set the mode.
The general functionality of CONFigure, FETCh, MEASure, and READ are described at the beginning of this section. See the SENSe:PVTime commands for more measurement related commands.
:CONFigure:PVTime
:INITiate:PVTime
:FETCh:PVTime[n]?
:READ:PVTime[n]?
:MEASure:PVTime[n]?
Front Panel
Access:
Measure
,
Power vs Time
History:
After the measurement is selected, press
Restore Meas
Defaults
to restore factory defaults.
Modified in version A.05.00.
Measurement Results Available
Results Returned
Returns unprocessed I/Q trace data, as a series of trace point values, in volts. The I values are listed first in each pair, using the 0 through even-indexed values. The Q values are the odd-indexed values.
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n=1 (or not specified) iDEN Programming Commands
MEASure Group of Commands
Results Returned
Returns the following scalar results:
1. Sample time is a floating point number that represents the time between samples when using the trace queries (n=0,2,etc.).
2. Power of single burst is the mean power (in dBm) across the useful part of the selected burst in the most recently acquired data, or in the last data acquired at the end of a set of averages. If averaging is on, the power is for the last burst.
3. Power averaged is the power (in dBm) of N averaged bursts, if averaging is on. The power is averaged across the useful part of the burst. Average m is a single burst from the acquired trace. If there are multiple bursts in the acquired trace, only one burst is used for average
m. This means that N traces are acquired to make the complete average.
If averaging is off, the value of power averaged is the same as the
power single burst value.
4. Number of samples is the number of data points in the captured signal. This number is useful when performing a query on the signal (i.e. when n=0,2,etc.).
5. Start point of the useful part of the burst is the index of the data point at the start of the useful part of the burst
6. Stop point of the useful part of the burst is the index of the data point at the end of the useful part of the burst
7. Index of the data point where T
0
occurred, where T
0
is the time point of the transition from bit 13 to bit 14 of the midamble training sequence.
8. Burst width of the useful part of the burst is the width of the burst measured at
−3 dB below the mean power in the useful part of the burst.
9. Maximum value is the maximum value of the most recently acquired data (in dBm).
10. Minimum value is the minimum value of the most recently acquired data (in dBm).
11. Burst search threshold is the value (in dBm) of the threshold where a valid burst is identified, after the data has been acquired.
12. IQ point delta is the number of data points offset that are internally applied to the useful data in traces n=2,3,4. You must apply this correction value to find the actual location of the Start, Stop, or T
0 values.
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n=1 (or not specified)
1xEV-DO or
W-CDMA mode
Results Returned
Returns the following scalar results:
1. Sample time is a floating point number that represents the time between samples when using the trace queries (where n = 0, 2, etc.).
2. Power of single burst is the mean power (in dBm) across the useful part of the selected burst in the most recently acquired data, or in the last data acquired at the end of a set of averages. If averaging is on, the power is for the last burst.
3. Power averaged is the power (in dBm) of N averaged bursts, if averaging is on. The power is averaged across the useful part of the burst. Average m is a single burst from the acquired trace. If there are multiple bursts in the acquired trace, only one burst is used for average
m. This means that N traces are acquired to make the complete average.
If averaging is off, the value of power averaged is the same as the
power single burst value.
4. Number of samples (N) is the number of data points in the captured signal. This number is useful when performing a query on the signal (i.e. when n = 0, 2, etc.).
5. Start point of the useful part of the burst is the index of the data point at the start of the useful part of the burst
6. Stop point of the useful part of the burst is the index of the data point at the end of the useful part of the burst
7. Index of the data point where T
0
occurred.
8. Burst width of the useful part of the burst is the width of the burst measured at
−3 dB below the mean power in the useful part of the burst.
9. Maximum value is the maximum value of the most recently acquired data (in dBm).
10. Minimum value is the minimum value of the most recently acquired data (in dBm).
11. Burst search threshold is the value (in dBm) of the threshold where a valid burst is identified, after the data has been acquired.
12. Averaged number (N) is used to average the measurement results.
13. First position in index to exceed the limit (N) is?
14. Reserved for future use, returns
−999.0.
15. Reserved for future use, returns
−999.0.
16. Reserved for future use, returns
−999.0.
17. Absolute power in the region A (dBm)
18. Absolute power in the region B (dBm)
19. Absolute power in the region C (dBm)
20. Absolute power in the region D (dBm)
21. Absolute power in the region E (dBm)
22. Relative power in the region A (dB)
23. Relative power in the region B (dB)
24. Relative power in the region C (dB)
25. Relative power in the region D (dB)
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n=1 (or not specified) (cont.)
1xEV-DO or
W-CDMA mode n=1 (or not specified) iDEN or WiDEN mode
2
26. Relative power in the region E (dB)
27. Maximum absolute power in the region A (dBm)
28. Maximum absolute power in the region B (dBm)
29. Maximum absolute power in the region C (dBm)
30. Maximum absolute power in the region D (dBm)
31. Maximum absolute power in the region E (dBm)
32. Maximum relative power in the region A (dB)
33. Maximum relative power in the region B (dB)
34. Maximum relative power in the region C (dB)
35. Maximum relative power in the region D (dB)
36. Maximum relative power in the region E (dB)
37. Minimum absolute power in the region A (dBm)
38. Minimum absolute power in the region B (dBm)
39. Minimum absolute power in the region C (dBm)
40. Minimum absolute power in the region D (dBm)
41. Minimum absolute power in the region E (dBm)
42. Minimum relative power in the region A (dB)
43. Minimum relative power in the region B (dB)
44. Minimum relative power in the region C (dB)
45. Minimum relative power in the region D (dB)
46. Minimum relative power in the region E (dB)
Returns the following comma-separated scalar results:
1. Avg Transmit Power is the mean power (in dBm) across the modulated symbols.
2. Sampling Frequency
3. Number of samples is the number of data points in the captured signal. This number is useful when performing a query on the signal (i.e. when n=0,2,etc.).
4. Resolution Bandwidth is the IF Bandwidth or data acquisition.
5. Point index of the peak of first modulated symbol
6. Point index of the peak of last modulated symbol
7. First data point that fail the limit test, in time (
µsec). If pass, –999 is returned.
8. Power difference between the signal and the limit at the first fail
point, in dB. If pass, –999 is returned.
9. Data point that has the smallest margin to the masks, in time
(
µsec). If fail, –999 is returned.
10. The smallest margin, in dB, of the signal to the masks. If fail, –999 is returned.
Returns trace point values of the entire captured I/Q trace data. These data points are floating point numbers representing the power of the signal (in dBm). There are N data points, where N is the number of samples. The period between the samples is defined by the sample time.
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2
WiDEN mode
3
4
6
W-CDMA mode
7
W-CDMA mode
7
EDGE, GSM,
Service mode
(E4406A only)
8, only available when averaging is set to both maximum and minimum
Returns a single pass(0)/fail(1) test result. This allows a quick way to determine if the test passed without the need to parse through several values.
Returns data points representing the upper mask (in dBm).
Returns data points representing the lower mask (in dBm).
Returns 5 comma-separated scalar values of the pass/fail (0.0 = passed, or
1.0 = failed) results determined by testing the upper mask.
Returns 5 comma-separated scalar values of the pass/fail (0.0 = passed, or
1.0 = failed) results determined by testing the lower mask:
Returns power level values for the 8 slots in the current frame (in dBm).
Returns trace point values of the minimum waveform data. These data points are floating point numbers representing the power of the signal (in dBm). There are N data points, where N is the number of samples. The period between the samples is defined by the sample time.
Use SENSe:PVT:AVERage:TYPE MXMinimum to set averaging to max and min. Use n=2 to return the corresponding maximum trace.
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0 not specified or n=1
2
3
MotoTalk Average Power (MT Avg Pwr) Measurement
This measures the average transmit power of normal (traffic) bursts in the time domain. You must select the appropriate mode using
INSTrument:SELect, to use these commands.
The general functionality of CONFigure, FETCh, MEASure, and READ are described at the beginning of this section. See the SENSe:APOWer commands for more measurement related commands.
:CONFigure:APOWer
:FETCh:APOWer[n]?
:READ:APOWer[n]?
:MEASure:APOWer[n]?
Front Panel
Access:
Measure, MT Avg Pwr
After the measurement is selected, press
Restore Meas
Defaults
to restore factory defaults.
Measurement Results Available
Results Returned
Returns unprocessed I/Q trace data, as a series of comma-separated trace points, in volts. The I values are listed first in each pair, using the 0 through even-indexed values. The Q values are the odd-indexed values.
Residual BER is the BER of the found frames (not including the dropped frames. Frame Erasure Rate (FER) = (frames dropped / frames tested) *
100.
Returns the following comma-separated scalar results:
1. Average power of gated signal. If Meas Method is Burst,
− 999 will be returned.
2. Average of the average power of bursts
3. Max average power of bursts
4. Min average power of bursts is
5. Number of bursts averaged
Returns the unprocessed trace data as a series of comma-separated trace points, in dBm.
Returns the average power of all bursts as a series of comma-separated numbers, in dBm.
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0 not specified or n=1
2
MotoTalk Transient EVM (MT Trans EVM)
Measurement
This measures the EVM (hopping or non-hopping) of MotoTalk normal
(traffic) bursts. You must select the appropriate mode using
INSTrument:SELect, to use these commands.
The general functionality of CONFigure, FETCh, MEASure, and READ are described at the beginning of this section. See the SENSe:TEVM commands for more measurement related commands.
:CONFigure:TEVM
:FETCh:TEVM[n]?
:READ:TEVM[n]?
:MEASure:TEVM[n]?
Front Panel
Access:
Measure, MT Trans EVM
After the measurement is selected, press
Restore Meas
Defaults
to restore factory defaults.
Measurement Results Available
Results Returned
Returns unprocessed I/Q trace data, as a data array of trace point values, in volts.
Returns the following comma-separated scalar results:
1. Average EVM of all traffic bursts
2. Max EVM of all traffic bursts – a floating point number (in percent) of highest EVM over the entire measurement area.
3. Min EVM of all traffic bursts – a floating point number (in percent) of lowest EVM over the entire measurement area.
4. Number of bursts averaged
5. Carrier offset
Returns the EVM of all traffic bursts as a series of comma-separated numbers, in percentage.
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Spectrum (Frequency Domain) Measurement
This measures the amplitude of your input signal with respect to the frequency. It provides spectrum analysis capability using FFT (fast
Fourier transform) measurement techniques. You must select the appropriate mode using INSTrument:SELect, to use these commands.
The general functionality of CONFigure, FETCh, MEASure, and READ are described at the beginning of this section. See the
SENSe:SPECtrum commands for more measurement related commands.
:CONFigure:SPECtrum
:FETCh:SPECtrum[n]?
:READ:SPECtrum[n]?
:MEASure:SPECtrum[n]?
Front Panel
Access:
Measure, Spectrum (Freq Domain)
After the measurement is selected, press
Restore Meas
Defaults
to restore factory defaults.
Measurement Results Available
Results Returned
Returns unprocessed I/Q trace data, as a series of comma-separated trace points, in volts. The I values are listed first in each pair, using the 0 through even-indexed values. The Q values are the odd-indexed values.
172 Chapter 5
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not specified or n=1
2,
3
4
5,
Service
mode only
6
7
Service
only
mode
8
9,
Service
mode only
10,
Service
mode only
Results Returned
Returns the following comma-separated scalar results:
1. FFT peak is the FFT peak amplitude.
2. FFT frequency is the FFT frequency of the peak amplitude.
3. FFT points is the Number of points in the FFT spectrum.
4. First FFT frequency is the frequency of the first FFT point of the spectrum.
5. FFT spacing is the frequency spacing between the FFT points of the spectrum.
6. Time domain points is the number of points in the time domain trace used for the FFT.
7. First time point is the time of the first time domain point, where time zero is the trigger event.
8. Time spacing is the time spacing between the time domain points.
9. Time domain returns a 1, if time domain is complex (I/Q), or 0 if it is real. (raw ADC samples)
10. Scan time is the total scan time of the time domain trace used for the
FFT. The total scan time = (time spacing)
Χ (time domain points − 1)
11. Current average count is the current number of data measurements that have already been combined, in the averaging calculation.
Returns the trace data of the log-magnitude versus time. (That is, the RF envelope.)
Returns the I and Q trace data. It is represented by I and Q pairs (in volts) versus time.
Returns spectrum trace data. That is, the trace of log-magnitude versus frequency. (The trace is computed using a FFT.)
Returns the averaged trace data of log-magnitude versus time. (That is, the
RF envelope.)
Not used.
Returns the averaged spectrum trace data. That is, the trace of the averaged log-magnitude versus frequency.
Not used.
Returns a trace containing the shape of the FFT window.
Returns trace data of the phase of the FFT versus frequency.
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Waveform (Time Domain) Measurement
This measures the power in your input signal with respect to time and is equivalent to zero-span operation in a traditional spectrum analyzer.
You must select the appropriate mode using INSTrument:SELect, to use these commands.
The general functionality of CONFigure, FETCh, MEASure, and READ are described at the beginning of this section. See the SENSe:WAVeform commands for more measurement related commands.
:CONFigure:WAVeform
:FETCh:WAVeform[n]?
:READ:WAVeform[n]?
:MEASure:WAVeform[n]?
Front Panel
Access:
Measure, Waveform (Time Domain)
After the measurement is selected, press
Restore Meas
Defaults
to restore factory defaults.
Measurement Results Available
Results Returned
Returns unprocessed I/Q trace data, as a series of comma-separated trace points, in volts. The I values are listed first in each pair, using the 0 through even-indexed values. The Q values are the odd-indexed values.
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not specified or n=1
2
Results Returned
Returns the following comma-separated scalar results:
1. Sample time is a floating point number representing the time between samples when using the trace queries (n=0,2,etc).
2. Mean power is the mean power (in dBm). This is either the power across the entire trace, or the power between markers if the markers are enabled. If averaging is on, the power is for the latest acquisition.
3. Mean power averaged is the power (in dBm) for N averages, if averaging is on. This is either the power across the entire trace, or the power between markers if the markers are enabled. If averaging is on, the power is for the latest acquisition. If averaging is off, the value of the mean power averaged is the same as the value of the mean power.
4. Number of samples is the number of data points in the captured signal. This number is useful when performing a query on the signal
(i.e. when n=0,2,etc.).
5. Peak-to-mean ratio has units of dB. This is the ratio of the maximum signal level to the mean power. Valid values are only obtained with averaging turned off. If averaging is on, the peak-to-mean ratio is calculated using the highest peak value, rather than the displayed average peak value.
6. Maximum value is the maximum of the most recently acquired data
(in dBm).
7. Minimum value is the minimum of the most recently acquired data (in dBm).
Returns comma-separated trace points of the entire captured trace data.
These data points are floating point numbers representing the power of the signal (in dBm). There are N data points, where N is the number of
samples. The period between the samples is defined by the sample time.
Chapter 5 175
iDEN Programming Commands
READ Subsystem
READ Subsystem
:READ:<measurement>[n]?
The READ? commands are used with several other commands and are documented in the section on the
“MEASure Group of Commands” on page 146 .
176 Chapter 5
iDEN Programming Commands
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SENSe Subsystem
Sets the instrument state parameters so that you can measure the input signal.
Adjacent Channel Power Measurement
Commands for querying the adjacent channel power measurement results and for setting to the default values are found in the
Group of Commands” on page 146 . The equivalent front panel keys for
the parameters described in the following commands, are found under the
Meas Setup
key, after the
ACP
measurement has been selected from the
MEASURE
key menu.
Adjacent Channel Power—Average Count
[:SENSe]:ACP:AVERage:COUNt <integer>
[:SENSe]:ACP:AVERage:COUNt?
Set the number of data acquisitions that will be averaged. After the specified number of average counts, the average mode (termination control) setting determines the average action.
Factory Preset and *RST: 10, for cdma2000, W-CDMA mode
Range:
Remarks:
20, for Basic, cdmaOne, iDEN, WiDEN mode
1 to 10,000
Use INSTrument:SELect to set the mode.
Adjacent Channel Power—Averaging State
[:SENSe]:ACP:AVERage[:STATe] OFF|ON|0|1
[:SENSe]:ACP:AVERage[:STATe]?
Turn average on or off.
Factory Preset and *RST: On
Remarks:
Off, for iDEN, WiDEN mode
Use INSTrument:SELect to set the mode.
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Adjacent Channel Power—Averaging Termination Control
[:SENSe]:ACP:AVERage:TCONtrol EXPonential|REPeat
[:SENSe]:ACP:AVERage:TCONtrol?
Select the type of termination control used for averaging. This determines the averaging action after the specified number of data acquisitions (average count) is reached.
Exponential – Each successive data acquisition after the average count is reached, is exponentially weighted and combined with the existing average.
Repeat – After reaching the average count, the averaging is reset and a new average is started.
Factory Preset and *RST: Repeat, for basic, cdmaOne, cdma2000, W-CDMA mode
Remarks:
Exponential, for NADC, PDC, iDEN, WiDEN mode
Use INSTrument:SELect to set the mode.
Adjacent Channel Power—Carrier Channel Integration BW
Basic, iDEN, WiDEN mode (E4406A)
[:SENSe]:ACP:BANDwidth|BWIDth:INTegration <freq>
[:SENSe]:ACP:BANDwidth|BWIDth:INTegration?
cdma2000, W-CDMA mode
[:SENSe]:ACP:BANDwidth[n]|BWIDth[n]:INTegration <freq>
[:SENSe]:ACP:BANDwidth[n]|BWIDth[n]:INTegration?
cdmaOne mode
[:SENSe]:ACP:BANDwidth[n]|BWIDth[n]:INTegration[m] <freq>
[:SENSe]:ACP:BANDwidth[n]|BWIDth[n]:INTegration[m]?
Set the Integration bandwidth that will be used for the main (carrier) channel.
BANDwidth[n]|
BWIDth[n]: m=1 is base station and 2 is mobiles. The default is base station (1).
INTegration[n]: m=1 is cellular bands and 2 is pcs bands. The default is cellular.
Example: WiDEN mode (E4406A)
ACP:BAND:INT 93 kHz
178 Chapter 5
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Factory Preset:
Mode
Basic (E4406A)
cdmaOne
iDEN (E4406A)
cdma2000
W-CDMA
Format
(Modulation Standard)
1.23 MHz
1.23 MHz
18 kHz
1.23 MHz
3.84 MHz
Factory Preset: WiDEN mode (E4406A)
Default Carrier Configuration
Setting
Auto
25 kHz
50 kHz
50 kHz outer
75 kHz
100 kHz
Actual value depends on detected carrier configuration and cannot be changed.
18.0 kHz
43.0 kHz
93.0 kHz
68.0 kHz
93.0 kHz
Range:
1 kHz to 5 MHz for iDEN, WiDEN (E4406A)
Default Unit: Hz
Remarks:
300 Hz to 20 MHz for Basic (E4406A), cdmaOne, cdma2000, or W-CDMA mode
With measurement type set at (TPR) total power reference, 1.40 MHz is sometimes used. Using
1.23 MHz will give a power that is very nearly identical to the 1.40 MHz value, and using 1.23 MHz will also yield the correct power spectral density with measurement type set at (PSD) reference. However, a setting of 1.40 MHz will not give the correct results with measurement type set at PSD reference.
For E4406A WiDEN mode
, if you have set the Carrier
Config ([:SENSe]:RADio:CARRier[:TYPE]) to AUTO, the
value is set to the default value described in
above according to the actual carrier config (you can
see detected carrier configuration by sending
[:SENSe]:RADio:CARRier[:TYPE]:ACTual?) You can not change this value. Even if the you set this value using SCPI,
Chapter 5 179
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it is ignored and the default value is used.
For E4406A you must be in Basic, cdmaOne, cdma2000,
W-CDMA, iDEN, or WiDEN mode to use this command.
Use INSTrument:SELect to set the mode.
Front Panel
Access:
Meas Setup
Adjacent Channel Power—Absolute Amplitude Limits
iDEN mode (E4406A)
[:SENSe]:ACP:OFFSet:ABSolute <power>
[:SENSe]:ACP:OFFSet:ABSolute?
WiDEN mode (E4406A)
[:SENSe]:ACP:OFFSet:LIST:ABSolute <power>,<power>
[:SENSe]:ACP:OFFSet:LIST:ABSolute?
Basic (E4406A), cdmaOne mode
[:SENSe]:ACP:OFFSet:LIST:ABSolute
<power>,<power>,<power>,<power>,<power>
[:SENSe]:ACP:OFFSet:LIST:ABSolute?
cdma2000, W-CDMA mode
[:SENSe]:ACP:OFFSet[n]:LIST:ABSolute
<power>,<power>,<power>,<power>,<power>
[:SENSe]:ACP:OFFSet[n]:LIST:ABSolute?
Sets the absolute amplitude levels to test against for each of the custom offsets. The list must contain five (5) entries (two (2) entries for
WiDEN). If there is more than one offset, the offset closest to the carrier channel is the first one in the list.
[:SENSe]:ACP:OFFSet[n]:LIST[m]:TEST selects the type of testing to be done at each offset.
You can turn off (not use) specific offsets with the
[:SENSe]:ACP:OFFSet[n]:LIST:STATe command.
The query returns the five (5) sets of the real numbers that are the current absolute amplitude test limits.
Offset[n] n=1 is base station and 2 is mobiles. The default is base station (1).
List[n] m=1 is cellular bands and 2 is pcs bands. The default is cellular.
180 Chapter 5
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Factory Preset: WiDEN mode (E4406A)
Carrier Configuration
Setting
Default
Auto
25 kHz
50 kHz
50 kHz outer
75 kHz
100 kHz
A B
Actual value depends on detected carrier configuration and cannot be changed.
0.0 dBm
0.0 dBm
N/A
N/A
0.0 dBm
0.0 dBm
0.0 dBm
0.0 dBm
N/A
N/A
Factory Preset:
Mode
Basic (E4406A)
cdmaOne cdma2000
W-CDMA
iDEN (E4406A)
Variant Offset A
0 dBm
BS cellular 0 dBm
BS pcs 0 dBm
MS cellular 0 dBm
MS pcs 0 dBm
50 dBm
50 dBm
0 dBm
Offset B Offset C Offset D Offset E
0 dBm 0 dBm 0 dBm
0 dBm 0 dBm 0 dBm
− 13 dBm − 13 dBm
0 dBm
0 dBm 0 dBm 0 dBm
− 13 dBm − 13 dBm
0 dBm
50 dBm 50 dBm 50 dBm
50 dBm n/a
50 dBm n/a
50 dBm n/a
0 dBm
0 dBm
0 dBm
0 dBm
0 dBm
50 dBm
50 dBm n/a
Range:
− 200.0 dBm to 50.0 dBm
Default Unit: dBm
Remarks: For E4406A you must be in Basic, cdmaOne, cdma2000,
W-CDMA, WiDEN, or iDEN mode to use this command.
Use INSTrument:SELect to set the mode.
For E4406A WiDEN mode:
• When you set these values remotely, the position of each value in the list sent corresponds to the offset.
Missing values are not permitted. For example, if you want to change the value of offset “B”, you must send all values up to 2.
• The default values are set according to
Chapter 5 181
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[:SENSe]:RADio:CARRier[:TYPE]:ACTual? setting as defined in Defaults table shown above.
• If you have set Carrier Config
([:SENSe]:RADio:CARRier[:TYPE]) to AUTO, the value is set to the default value described in
above according to the actual carrier configuration detected (you can see detected carrier configuration by sending
[:SENSe]:RADio:CARRier[:TYPE]:ACTual?) You can not change this value. Even if the you set this value using SCPI, it is ignored and the default value is used.
• You must always send two <freq> values regardless of the [:SENSe]:RADio:CARRier[:TYPE] setting. The first value is for offset “A” and the second is for offset
“B”. Note that the offset “B” value is only used when
[:SENSe]:RADio:CARRier[:TYPE]? returns O50, but two values are always needed when the you send this command. If you send only one value, “
− 109
Missing parameter” is returned.
• When sending this query form of this command, the second element of the responded array is always present but only used when
[:SENSe]:RADio:CARRier[:TYPE]:ACTual? returns
O50.
Front Panel
Access:
Meas Setup, Ofs & Limits
Adjacent Channel Power—Define Resolution Bandwidth List
iDEN mode (E4406A)
[:SENSe]:ACP:OFFSet:BANDwidth|BWIDth <res_bw>
[:SENSe]:ACP:OFFSet:BANDwidth|BWIDth?
WiDEN mode (E4406A)
[:SENSe]:ACP:OFFSet:BANDwidth|BWIDth <res_bw>
,<res_bw>
[:SENSe]:ACP:OFFSet:BANDwidth|BWIDth?
Basic mode (E4406A)
[:SENSe]:ACP:OFFSet:LIST:BANDwidth|BWIDth
<res_bw>,<res_bw>,<res_bw>,<res_bw>,<res_bw>
[:SENSe]:ACP:OFFSet:LIST:BANDwidth|BWIDth?
cdma2000, W-CDMA mode
182 Chapter 5
iDEN Programming Commands
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[:SENSe]:ACP:OFFSet[n]:LIST:BANDwidth|BWIDth
<res_bw>,<res_bw>,<res_bw>,<res_bw>,<res_bw>
[:SENSe]:ACP:OFFSet[n]:LIST:BANDwidth|BWIDth?
cdmaOne mode
[:SENSe]:ACP:OFFSet[n]:LIST[n]:BANDwidth|BWIDth
<res_bw>,<res_bw>,<res_bw>,<res_bw>,<res_bw>
[:SENSe]:ACP:OFFSet[n]:LIST[n]:BANDwidth|BWIDth?
Define the custom resolution bandwidth(s) for the adjacent channel power testing. If there is more than one bandwidth, the list must contain five (5) entries. Each resolution bandwidth in the list corresponds to an offset frequency in the list defined by
[:SENSe]:ACP:OFFSet[n]:LIST[n][:FREQuency]. You can turn off (not use) specific offsets with the [:SENSe]:ACP:OFFSet[n]:LIST[n]:STATe command.
Offset[n] n=1 is base station and 2 is mobiles. The default is base station (1).
List[n]
cdmaOne mode n=1 is cellular bands and 2 is pcs bands. The default is cellular.
cdma2000 mode n=1 is SR1, 2 is SR3 DS, and 3 is SR3 MC. The default is SR1 (1).
W-CDMA mode n=1 is ARIB, 2 is 3GPP, and 3 is Trial. The default is
ARIB (1).
Example: WiDEN mode (E4406A):
(Example #1) When [:SENSe]:RADio:CARRier
[:TYPE]:ACTual? returns I25, I50, I75, or I100, and you want to set the offset bandwidth of offset A to 20 kHz
, send:
ACP:OFFS:LIST:band 20e3, 10e3 (the second value can be arbitrary, but it is needed).
(Example #2) When [:SENSe]:RADio:CARRier
[:TYPE]:ACTual? returns O50, and you want to set the offset bandwidth of offset
A
and B to 20 kHz and 5 kHz respectively, send:
ACP:OFFS:LIST:band 20e3, 5e3
State Saved: Saved in Instrument State
Chapter 5 183
Mode
iDEN
(E4406A)
Basic
(E4406A)
cdmaOne cdma2000
W-CDMA
iDEN Programming Commands
SENSe Subsystem
Factory Preset: WiDEN mode (E4406A)
Carrier Configuration
Setting
Auto
25 kHz
50 kHz
50 kHz outer
75 kHz
100 kHz
Default
A B
Actual value depends on detected carrier configuration and cannot be changed.
18.0 kHz
18.0 kHz
N/A
N/A
18.0 kHz
18.0 kHz
18.0 kHz
18.0 kHz
N/A
N/A
Factory Preset:
Variant Offset A
10 kHz
Offset B
n/a
Offset C
n/a
Offset D
n/a
Offset E
n/a
30 kHz 30 kHz 30 kHz 30 kHz 30 kHz
BS cellular
BS pcs
MS cellular
MS pcs
30 kHz
30 kHz
30 kHz
30 kHz
30 kHz
3.84 MHz
30 kHz
12.5 kHz
30 kHz
12.5 kHz
30 kHz
1 MHz
30 kHz
1 MHz
30 kHz
30 kHz
30 kHz
30 kHz
30 kHz
30 kHz
30 kHz
30 kHz
30 kHz 30 kHz 30 kHz 30 kHz
3.84 MHz 3.84 MHz 3.84 MHz 3.84 MHz
Range: 300 Hz to 20 MHz for cdmaOne, Basic, cdma2000,
W-CDMA mode
1 kHz to 5 MHz for iDEN mode (E4406A)
100 kHz to 20 MHz for WiDEN mode (E4406A)
Default Unit: Hz
Remarks: For E4406A you must be in Basic, cdmaOne, cdma2000,
W-CDMA, WiDEN, or iDEN mode to use this command.
Use INSTrument:SELect to set the mode.
For E4406A WiDEN mode:
• When you set these values remotely, the position of each value in the list sent corresponds to the offset.
184 Chapter 5
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Missing values are not permitted. For example, if you want to change the value of offset “B”, you must send all values up to 2.
• The default values are set according to
[:SENSe]:RADio:CARRier[:TYPE]:ACTual? setting as defined in Defaults table shown above.
• If you have set Carrier Config
([:SENSe]:RADio:CARRier[:TYPE]) to AUTO, the value is set to the default value described in
“Factory Preset:” above according to the actual
carrier configuration detected (you can see detected carrier configuration by sending
[:SENSe]:RADio:CARRier[:TYPE]:ACTual?) You can not change this value. Even if the you set this value using SCPI, it is ignored and the default value is used.
• You must always send two <freq> values regardless of the [:SENSe]:RADio:CARRier[:TYPE] setting. The first value is for offset “A” and the second is for offset
“B”. Note that the offset “B” value is only used when
[:SENSe]:RADio:CARRier[:TYPE]? returns O50, but two values are always needed when the you send this command. If you send only one value, “
−109
Missing parameter” is returned.
• When sending this query form of this command, the second element of the responded array is always present but only used when
[:SENSe]:RADio:CARRier[:TYPE]:ACTual? returns
O50.
Adjacent Channel Power—Define Offset Frequency List
iDEN mode (E4406A)
[:SENSe]:ACP:OFFSet[:FREQuency] <f_offset>
[:SENSe]:ACP:OFFSet[:FREQuency]?
Basic mode (E4406A),
[:SENSe]:ACP:OFFSet:LIST[:FREQuency]
<f_offset>,<f_offset>,<f_offset>,<f_offset>,<f_offset>
[:SENSe]:ACP:OFFSet:LIST[:FREQuency]?
WiDEN mode (E4406A)
[:SENSe]:ACP:OFFSet:LIST[:FREQuency]
<f_offset>,<f_offset>
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iDEN Programming Commands
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[:SENSe]:ACP:OFFSet:LIST[:FREQuency]?
cdma2000, W-CDMA mode
[:SENSe]:ACP:OFFSet[n]:LIST[:FREQuency]
<f_offset>,<f_offset>,<f_offset>,<f_offset>,<f_offset>
[:SENSe]:ACP:OFFSet[n]:LIST[:FREQuency]?
cdmaOne mode
[:SENSe]:ACP:OFFSet[n]:LIST[n][:FREQuency]
<f_offset>,<f_offset>,<f_offset>,<f_offset>,<f_offset>
[:SENSe]:ACP:OFFSet[n]:LIST[n][:FREQuency]?
Enables you to define the custom set of offset frequencies at which the switching transient spectrum part of the ACP measurement will be made. The list contains up to five (5) entries, depending on the mode selected, for offset frequencies. Each offset frequency in the list corresponds to a reference bandwidth in the bandwidth list.
An offset frequency of zero turns the display of the measurement for that offset off, but the measurement is still made and reported. You can turn off (not use) specific offsets with the
[:SENSe]:ACP:OFFSet:LIST:STATe command (not available in WiDEN
mode (E4406A)).
Offset[n]
List[n] n=1 is base station and 2 is mobiles. The default is base station (1).
n=1 is cellular bands and 2 is pcs bands. The default is cellular.
Example: WiDEN mode (E4406A):
(Example #1) When [:SENSe]:RADio:CARRier
[:TYPE]:ACTual? returns I25, I50, I75, or I100, and you want to set the offset frequency of offset A to 100 kHz, send:
ACP:OFFS:LIST 100e3, 10e3 (the second value can be arbitrary but it is needed).
(Example #2) When [:SENSe]:RADio:CARRier
[:TYPE]:ACTual? returns O50, and you want to set the offset frequencies of offset A and B to 75 kHz and 10 kHz respectively, send:
ACP:OFFS:LIST 75e3, 10e3
State Saved: Saved in Instrument State
186 Chapter 5
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Factory Preset: WiDEN mode (E4406A)
Carrier Configuration
Setting
Default
Auto
25 kHz
50 kHz
50 kHz outer
75 kHz
100 kHz
A B
Actual value depends on detected carrier configuration and cannot be changed.
25.0 kHz
37.5 kHz
N/A
N/A
62.5 kHz
50.0 kHz
62.5 kHz
12.5 kHz
N/A
N/A
Factory Preset: iDEN mode (E4406A), Basic mode (E4406A),
cdma2000, W-CDMA mode
Mode
iDEN (E4406A)
WiDEN (E4406A)
Basic (E4406A)
cdmaOne cdma2000
W-CDMA
Variant
BS cellular 750 kHz
BS pcs
Offset A
25 kHz
62.5 kHz
750 kHz
885 kHz
Offset B Offset C Offset D Offset E
n/a n/a
1.98 MHz 0 Hz
1.98 MHz 0 Hz
1.25625
MHz n/a n/a
MS cellular 885 kHz
MS pcs 1.265 MHz
1.98 MHz
0 Hz
0 Hz
0 Hz
BTS 750 kHz 1.98 MHz 0 Hz
MS 885 kHz
5 MHz
1.98 MHz 0 Hz
10 MHz 15 MHz n/a n/a
0 Hz
0 Hz
2.75 MHz 0 Hz
0 Hz
0 Hz
0 Hz
0 Hz
20 MHz n/a n/a
0 Hz
0 Hz
0 Hz
0 Hz
0 Hz
0 Hz
0 Hz
25 MHz
Range: 0 Hz to 45 MHz for cdmaOne
0 Hz to 20 MHz for iDEN, Basic, WiDEN (E4406A)
0 Hz to 100 MHz for cdma2000, W-CDMA
Default Unit: Hz
Remarks: For E4406A you must be in Basic, cdmaOne, cdma2000,
W-CDMA, WiDEN, or iDEN mode to use this command.
Use INSTrument:SELect to set the mode.
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For E4406A WiDEN mode:
• When you set these values remotely, the position of each value in the list sent corresponds to the offset.
Missing values are not permitted. For example, if you want to change the value of offset “B”, you must send all values up to 2.
• The default values are set according to
[:SENSe]:RADio:CARRier[:TYPE]:ACTual? setting as defined in Defaults table shown above.
• If you have set Carrier Config
([:SENSe]:RADio:CARRier[:TYPE]) to AUTO, the value is set to the default value described in
above according to the actual carrier configuration detected (you can see detected carrier configuration by sending
[:SENSe]:RADio:CARRier[:TYPE]:ACTual?) You can not change this value. Even if the you set this value using SCPI, it is ignored and the default value is used.
• You must always send two <freq> values regardless of the [:SENSe]:RADio:CARRier[:TYPE] setting. The first value is for offset “A” and the second is for offset
“B”. Note that the offset “B” value is only used when
[:SENSe]:RADio:CARRier[:TYPE]? returns O50, but two values are always needed when the you send this command. If you send only one value, “
−109
Missing parameter” is returned.
• When sending this query form of this command, the second element of the responded array is always present but only used when
[:SENSe]:RADio:CARRier[:TYPE]:ACTual? returns
O50.
Front Panel
Access:
Meas Setup
,
Ofs & Limits
Adjacent Channel Power—Amplitude Limits Relative to the
Carrier
iDEN mode (E4406A)
[:SENSe]:ACP:OFFSet:RCARrier <rel_power>
[:SENSe]:ACP:OFFSet:RCARrier?
WiDEN mode (E4406A)
188 Chapter 5
iDEN Programming Commands
SENSe Subsystem
[:SENSe]:ACP:OFFSet:LIST:RCARrier <rel_power>,<rel_power>
[:SENSe]:ACP:OFFSet:LIST:RCARrier?
Basic mode (E4406A)
[:SENSe]:ACP:OFFSet:LIST:RCARrier
<rel_power>,<rel_power>,<rel_power>,<rel_power>,<rel_power>
[:SENSe]:ACP:OFFSet:LIST:RCARrier?
cdma2000, W-CDMA mode
[:SENSe]:ACP:OFFSet[n]:LIST:RCARrier
<rel_power>,<rel_power>,<rel_power>,<rel_power>,<rel_power>
[:SENSe]:ACP:OFFSet[n]:LIST:RCARrier?
cdmaOne mode
[:SENSe]:ACP:OFFSet[n]:LIST[n]:RCARrier
<rel_power>,<rel_power>,<rel_power>,<rel_power>,<rel_power>
[:SENSe]:ACP:OFFSet[n]:LIST[n]:RCARrier?
Sets the amplitude levels to test against for any custom offsets. This amplitude level is relative to the carrier amplitude. If multiple offsets are available, the list contains five (5) entries. The offset closest to the carrier channel is the first one in the list.
[:SENSe]:ACP:OFFSet[n]:LIST[n]:TEST selects the type of testing to be done at each offset.
You can turn off (not use) specific offsets with the
[:SENSe]:ACP:OFFSet[n]:LIST[n]:STATe command.
The query returns the five (5) sets of the real numbers that are the current amplitude test limits, relative to the carrier, for each offset.
Offset[n] n=1 is base station and 2 is mobiles. The default is base station (1).
List[n] n=1 is cellular bands and 2 is pcs bands. The default is cellular.
Factory Preset: WiDEN mode (E4406A)
Carrier Configuration
Setting
Default
Auto
25 kHz
50 kHz
A B
Actual value depends on detected carrier configuration and cannot be changed.
− 50.0 dBc
− 50.0 dBc
N/A
N/A
Chapter 5 189
iDEN Programming Commands
SENSe Subsystem
Carrier Configuration
Setting
Default
50 kHz outer
75 kHz
100 kHz
A
− 50.0 dBc
− 50.0 dBc
− 50.0 dBc
Factory Preset:
B
− 50.0 dBc
N/A
N/A
Mode
iDEN (E4406A)
Basic (E4406A)
cdmaOne cdma2000
W-CDMA
Variant Offset A Offset B Offset C Offset D Offset E
0 dBc
− 45 dBc
BS cellular
− 45 dBc
BS pcs
− 45 dBc
MS cellular
− 42 dBc
MS pcs
− 42 dBc
BTS
MS n/a
− 60 dBc
− 60 dBc
0 dBc
− 54 dBc
0 dBc n/a
0 dBc
0 dBc
0 dBc
0 dBc
0 dBc n/a
0 dBc
0 dBc
0 dBc
0 dBc
0 dBc n/a
0 dBc
0 dBc
0 dBc
0 dBc
0 dBc
0 dBc 0 dBc 0 dBc 0 dBc 0 dBc
− 44.2 dBc − 49.2 dBc − 49.2 dBc − 49.2 dBc − 49.2 dBc
− 32.2 dBc − 42.2 dBc − 42.2 dBc − 42.2 dBc − 42.2 dBc
Range:
− 150.0 dB to 50.0 dB for cdmaOne, cdma2000,
W-CDMA, Basic (E4406A), WiDEN (E4406A)
− 200.0 dB to 50.0 dB for iDEN (E4406A)
Default Unit: dB
Remarks: For E4406A you must be in Basic, cdmaOne, cdma2000,
W-CDMA, WiDEN, or iDEN mode to use this command.
Use INSTrument:SELect to set the mode.
For E4406A WiDEN mode:
• When you set these values remotely, the position of each value in the list sent corresponds to the offset.
Missing values are not permitted. For example, if you want to change the value of offset “B”, you must send all values up to 2.
• The default values are set according to
[:SENSe]:RADio:CARRier[:TYPE]:ACTual? setting as defined in Defaults table shown above.
• If you have set Carrier Config
190 Chapter 5
iDEN Programming Commands
SENSe Subsystem
([:SENSe]:RADio:CARRier[:TYPE]) to AUTO, the value is set to the default value described in
“Factory Preset:” above according to the actual
carrier configuration detected (you can see detected carrier configuration by sending
[:SENSe]:RADio:CARRier[:TYPE]:ACTual?) You can not change this value. Even if the you set this value using SCPI, it is ignored and the default value is used.
• You must always send two <freq> values regardless of the [:SENSe]:RADio:CARRier[:TYPE] setting. The first value is for offset “A” and the second is for offset
“B”. Note that the offset “B” value is only used when
[:SENSe]:RADio:CARRier[:TYPE]? returns O50, but two values are always needed when the you send this command. If you send only one value, “-109
Missing parameter” is returned.
• When sending this query form of this command, the second element of the responded array is always present but only used when
[:SENSe]:RADio:CARRier[:TYPE]:ACTual? returns
O50.
Front Panel
Access:
Meas Setup
,
Ofs & Limits
,
Rel Lim (Car)
(iDEN or WiDEN mode)
Adjacent Channel Power—Amplitude Limits Relative to the
Power Spectral Density
iDEN mode
[:SENSe]:ACP:OFFSet:RPSDensity <rel_power>
[:SENSe]:ACP:OFFSet:RPSDensity?
Basic mode
[:SENSe]:ACP:OFFSet:LIST:RPSDensity
<rel_powr>,<rel_powr>,<rel_powr>,<rel_powr>,<rel_powr>
[:SENSe]:ACP:OFFSet:LIST:RPSDensity?
cdmaOne, cdma2000, W-CDMA mode
[:SENSe]:ACP:OFFSet[n]:LIST[n]:RPSDensity
<rel_powr>,<rel_powr>,<rel_powr>,<rel_powr>,<rel_powr>
[:SENSe]:ACP:OFFSet[n]:LIST[n]:RPSDensity?
Sets the amplitude levels to test against for any custom offsets. This
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Basic cdmaOne cdma2000
W-CDMA
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SENSe Subsystem
amplitude level is relative to the power spectral density. If multiple offsets are available, the list contains five (5) entries. The offset closest to the carrier channel is the first one in the list.
ACP:OFFS[n]:LIST[n]:TEST selects the type of testing to be done at each offset.
You can turn off (not use) specific offsets with the
SENS:ACP:OFFSet:LIST:STATe command.
The query returns five (5) real numbers that are the current amplitude test limits, relative to the power spectral density, for each offset.
Offset[n] n=1 is base station and 2 is mobiles. The default is base station (1).
List[n]
cdmaOne mode n=1 is cellular bands and 2 is pcs bands. The default is cellular.
cdma2000 mode n=1 is SR1, 2 is SR3 DS, and 3 is SR3 MC. The default is SR1 (1).
W-CDMA mode n=1 is ARIB, 2 is 3GPP, and 3 is Trial. The default is
ARIB (1).
Factory Preset and *RST:
Variant
BS cellular
BS pcs
MS cellular
MS pcs
Offset A
0 dB n/a
− 28.87 dB − 43.87 dB
− 28.87 dB − 43.87 dB
− 28.87 dB 0 dB
− 25.87 dB − 37.87 dB
− 25.87 dB 0 dB
0 dB
0 dB
Offset B Offset C Offset D Offset E
0 dB
0 dB n/a
0 dB
0 dB
0 dB
0 dB
0 dB
0 dB
0 dB n/a
0 dB
0 dB
0 dB
0 dB
0 dB
0 dB
0 dB n/a
0 dB
0 dB
0 dB
0 dB
0 dB
0 dB
0 dB
Range:
− 150 dB to 50 dB for cdmaOne, Basic, cdma2000,
W-CDMA mode
− 200 dB to 50 dB for iDEN mode
Default Unit: dB
Remarks: You must be in Basic, cdmaOne, cdma2000, W-CDMA,
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iDEN mode to use this command. Use
INSTrument:SELect to set the mode.
Adjacent Channel Power—Define Type of Offset Frequency List
iDEN or WiDEN mode (E4406A)
[:SENSe]:ACP:OFFSet:TEST ABSolute|AND|OR|RELative
[:SENSe]:ACP:OFFSet:TEST?
Basic mode (E4406A)
[:SENSe]:ACP:OFFSet:LIST:TEST ABSolute|AND|OR|RELative,
ABSolute|AND|OR|RELative, ABSolute|AND|OR|RELative,
ABSolute|AND|OR|RELative, ABSolute|AND|OR|RELative
[:SENSe]:ACP:OFFSet:LIST:TEST?
cdma2000, W-CDMA mode
[:SENSe]:ACP:OFFSet[n]:LIST:TEST ABSolute|AND|OR|RELative,
ABSolute|AND|OR|RELative, ABSolute|AND|OR|RELative,
ABSolute|AND|OR|RELative, ABSolute|AND|OR|RELative
[:SENSe]:ACP:OFFSet[n]:LIST:TEST?
cdmaOne mode
[:SENSe]:ACP:OFFSet[n]:LIST[n]:TEST,
ABSolute|AND|OR|RELative,
ABSolute|AND|OR|RELative, ABSolute|AND|OR|RELative,
ABSolute|AND|OR|RELative
[:SENSe]:ACP:OFFSet[n]:LIST[n]:TEST?
Defines the type of testing to be done at any custom offset frequencies.
The measured powers are tested against the absolute values defined with [:SENSe]:ACP:OFFSet[n]:LIST:ABSolute, or the relative values defined with [:SENSe]:ACP:OFFSet:LIST:RPSDensity and
[:SENSe]:ACP:OFFSet:LIST:RCARrier.
You can turn off (not use) specific offsets with the
[:SENS]:ACP:OFFSet:LIST:STATe command. (Not available in WiDEN mode.)
Offset[n]
List[n] n=1 is base station and 2 is mobiles. The default is base station (1).
cdmaOne mode n=1 is cellular bands and 2 is pcs bands. The default is cellular.
cdma2000 mode n=1 is SR1, 2 is SR3 DS, and 3 is SR3
MC. The default is SR1 (1).
W-CDMA mode n=1 is ARIB, 2 is 3GPP, and 3 is Trial.
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The default is ARIB (1).
The types of testing that can be done for each offset include:
• Absolute - Test the absolute power measurement. If it fails, then return a failure for the measurement at this offset.
• And - Test both the absolute power measurement and the power relative to the carrier. If they both fail, then return a failure for the measurement at this offset.
• Or - Test both the absolute power measurement and the power relative to the carrier. If either one fails, then return a failure for the measurement at this offset.
• Relative - Test the power relative to the carrier. If it fails, then return a failure for the measurement at this offset.
• OFF - Turns the power test off.
Factory Preset:
Mode Variant Offset A Offset B Offset C Offset D Offset E
iDEN (E4406A)
WiDEN (E4406A)
Basic (E4406A)
cdmaOne cdma2000
W-CDMA
REL
REL a
REL
BS cellular REL
BS pcs
MS cellular
MS pcs
REL
REL
REL
REL
REL n/a
REL
REL
ABS
REL
ABS
REL
REL n/a n/a
REL
REL
ABS
REL
ABS
REL
REL n/a n/a
REL
REL
REL
REL
REL
REL
REL n/a n/a
REL
REL
REL
REL
REL
REL
REL a. Parameters for Offset A and Offset B are set by a common command, therefore they are always the same.
Remarks: For E4406A you must be in Basic, cdmaOne, cdma2000,
W-CDMA, WiDEN, or iDEN mode to use this command.
Use INSTrument:SELect to set the mode.
Front Panel
Access:
Meas Setup
,
Ofs & Limits
,
Fail
(iDEN)
Meas Setup
,
Ofs & Limits
,
Composite Fail
(WiDEN)
194 Chapter 5
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Adjacent Channel Power—Spectrum Trace Control
[:SENSe]:ACP:SPECtrum:ENABle OFF|ON|0|1
[:SENSe]:ACP:SPECtrum:ENABle?
Turns on/off the measurement of the spectrum trace data when the spectrum view is selected. (Select the view with DISPlay:ACP:VIEW.)
You may want to disable the spectrum trace data part of the measurement so you can increase the speed of the rest of the measurement data.
Factory Preset and *RST: On
Remarks:
History:
You must be in Basic, cdmaOne, cdma2000, W-CDMA, iDEN mode to use this command. Use
INSTrument:SELect to set the mode.
Revision A.03.27 or later
Adjacent Channel Power—Trigger Source
[:SENSe]:ACP:TRIGger:SOURce
EXTernal[1]|EXTernal2|FRAMe|IF|IMMediate|RFBurst
[:SENSe]:ACP:TRIGger:SOURce?
Select the trigger source used to control the data acquisitions.
External 1 – front panel external trigger input
External 2 – rear panel external trigger input
Frame – internal frame trigger from front panel input
IF – internal IF envelope (video) trigger
Immediate – the next data acquisition is immediately taken, capturing the signal asynchronously (also called free run).
RF Burst – internal wideband RF burst envelope trigger that has automatic level control for periodic burst signals.
Factory Preset and *RST: IMMediate for BS
Range:
Remarks:
RFBurst for MS
RFBurst for iDEN and WiDEN
EXT1|EXT2|IMM|RFB for Basic mode
You must be in Basic, iDEN, WiDEN, NADC or PDC mode to use this command. Use INSTrument:SELect to set the mode.
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In Basic mode, for offset frequencies >12.5 MHz, the external triggers will be a more reliable trigger source than RF burst. Also, you can use the Waveform measurement to set up trigger delay.
Correction for Base Station RF Port External
Attenuation
[:SENSe]:CORRection:BS[:RF]:LOSS <rel_power>
[:SENSe]:CORRection:BS[:RF]:LOSS?
Set the correction equal to the external attenuation used when measuring base stations.
Factory Preset and *RST: 0 dB
Range: 0 to 100 dB for cdmaOne
− 50 to 50 dB for Basic, iDEN, NADC or PDC
Default Unit: dB
Remarks: You must be in the Basic, iDEN, cdmaOne, NADC or
PDC mode to use this command. Use
INSTrument:SELect to set the mode.
Value is global to the current mode.
Correction for Mobile Station RF Port External
Attenuation
[:SENSe]:CORRection:MS[:RF]:LOSS <rel_power>
[:SENSe]:CORRection:MS[:RF]:LOSS?
Set the correction equal to the external attenuation used when measuring mobile stations.
Factory Preset and *RST: 0 dB
Range:
− 50 to 50 dB
Default Unit: dB
Remarks: You must be in the iDEN mode to use this command.
Use INSTrument:SELect to set the mode.
Value is global to the current mode.
196 Chapter 5
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Occupied Bandwidth Measurement
Commands for querying the occupied bandwidth measurement results and for setting to the default values are found in the
“MEASure Group of Commands” on page 146
. The equivalent front panel keys for the parameters described in the following commands, are found under the
Meas Setup
key, after the
Occupied BW
measurement has been selected from the
MEASURE
key menu.
Occupied Bandwidth—Average Count
[:SENSe]:OBW:AVERage:COUNt <integer>
[:SENSe]:OBW:AVERage:COUNt?
Set the number of data acquisitions that will be averaged. After the specified number of average counts, the average mode (termination control) setting determines the average action.
Factory Preset: 10
Range: 1 to 10,000
Remarks: This command is used for measurements in the
MEASURE menu.
You must be in the iDEN, WiDEN mode to use this command. Use INSTrument:SELect to set the mode.
Version A.02.00 or later History:
Front Panel
Access:
Meas Setup, Avg Number
Occupied Bandwidth—Averaging State
[:SENSe]:OBW:AVERage[:STATe] OFF|ON|0|1
[:SENSe]:OBW:AVERage[:STATe]?
Turn the averaging function on or off.
Factory Preset: ON
Remarks: You must be in the PDC, cdma2000, W-CDMA, or
1xEV-DO mode to use this command. Use
INSTrument:SELect to set the mode.
History:
Front Panel
Access:
Version A.02.00 or later
Meas Setup, Avg Number
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Occupied Bandwidth—Averaging Termination Control
[:SENSe]:OBW:AVERage:TCONtrol EXPonential|REPeat
[:SENSe]:OBW:AVERage:TCONtrol?
Select the type of termination control used for the averaging function.
This determines the averaging action after the specified number of data acquisitions (average count) is reached.
EXPonential - After the average count is reached, each successive data acquisition is exponentially weighted and combined with the existing average.
REPeat - After reaching the average count, the averaging is reset and a new average is started.
Factory Preset: EXPonential for PDC, iDEN, WiDEN
REPeat for cdma2000, W-CDMA, 1xEV-DO
Remarks: You must be in the PDC, cdma2000, W-CDMA, iDEN,
WiDEN, or 1xEV-DO mode to use this command. Use
INSTrument:SELect to set the mode.
Version A.02.00 or later History:
Front Panel
Access:
Meas Setup
,
Avg Mode
Occupied Bandwidth—Percent of Total Power
[:SENSe]:OBWidth:PERCent <number>
[:SENSe]:OBWidth:PERCent?
Set the percentage of the total power for which the occupied bandwidth is calculated.
Factory Preset and *RST: 99%
Range: 0.1% to 99.9%
Default Unit: percent
Remarks: You must be in the iDEN, WiDEN mode to use this command. Use INSTrument:SELect to set the mode.
Front Panel
Access:
Meas Setup
,
Occ BW % Pwr
Meas Setup
,
% Pwr (iDEN, WiDEN)
198 Chapter 5
iDEN Programming Commands
SENSe Subsystem
Occupied Bandwidth—Trigger Source
[:SENSe]:OBW:TRIGger:SOURce
EXTernal[1]|EXTernal2|IF|IMMediate|RFBurst
[:SENSe]:OBWidth:TRIGger:SOURce?
Select the trigger source used to control the data acquisitions for the occupied bandwidth measurement.
External 1 – rear panel external trigger input
External 2 – front panel external trigger input
IF – internal IF envelope (video) trigger
Immediate – the next data acquisition is immediately taken, capturing the signal asynchronously (also called free run)
RF Burst – internal wideband RF burst envelope trigger that has automatic level control for periodic burst signals
Factory Preset and *RST: Immediate
Immediate for BS
RF Burst for MS
Remarks:
IF for iDEN, WiDEN
You must be in the PDC, iDEN, WiDEN mode to use this command. Use INSTrument:SELect to set the mode.
Version A.02.00 or later History:
Front Panel
Access:
Meas Setup
,
Trig Source
RF Port Power Range Auto
[:SENSe]:POWer[:RF]:RANGe:AUTO OFF|ON|0|1
[:SENSe]:POWer[:RF]:RANGe:AUTO?
Select the RF port power range to be set either automatically or manually.
ON - power range is automatically set as determined by the actual measured power level at the start of a measurement.
OFF - power range is manually set
Factory Preset: ON
Remarks: You must be in the cdmaOne, GSM, EDGE, NADC,
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iDEN Programming Commands
SENSe Subsystem
PDC, cdma2000, W-CDMA, iDEN, or WiDEN mode to use this command. Use INSTrument:SELect to set the mode.
Front Panel
Access:
Input, Max Total Pwr (at UUT)
Power vs. Time Measurement
Commands for querying the power versus time measurement results
and for setting to the default values are found in the “MEASure Group of Commands” on page 146
. The equivalent front panel keys for the parameters described in the following commands, are found under the
Meas Setup
key, after the
Power vs Time
measurement has been selected from the
MEASURE
key menu.
Power vs. Time—Number of Bursts Averaged
[:SENSe]:PVTime:AVERage:COUNt <integer>
[:SENSe]:PVTime:AVERage:COUNt?
Set the number of bursts that will be averaged. After the specified number of bursts (average counts), the averaging mode (termination control) setting determines the averaging action.
Factory Preset: 15
16 for iDEN, WiDEN
Range:
100 for 1xEV-DO
1 to 10,000
Remarks: For E4406A you must be in the EDGE(w/GSM), GSM,
1xEV-DO, W-CDMA, iDEN, WiDEN, or Service mode to use this command. Use INSTrument:SELect to set the mode.
Power vs. Time—Averaging Type
EDGE (w/GSM), GSM, Service mode
[:SENSe]:PVTime:AVERage:TYPE
LOG|MAXimum|MINimum|MXMinimum|RMS
iDEN, WiDEN mode
[:SENSe]:PVTime:AVERage:TYPE
LOG|MAXimum|MINimum|MXMinimum|RMS|POWer
200 Chapter 5
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1xEV-DO mode
[:SENSe]:PVTime:AVERage:TYPE LOG|MAXimum|MINimum|RMS|SCALar
W-CDMA mode
[:SENSe]:PVTime:AVERage:TYPE RMS|MAXimum|MINimum
[:SENSe]:PVTime:AVERage:TYPE?
Select the type of averaging to be performed.
LOG - The log of the power is averaged. (This is also known as video averaging.)
MAXimum - The maximum values are retained.
MINimum - The minimum values are retained.
MXMinimum - Both the maximum and the minimum values are retained. (E4406A - EDGE(W/GSM), GSM, and Service modes, and
PSA - only)
RMS - The power is averaged to provide a voltage rms value.
SCALar - The amplitude level of power is averaged to provide a voltage value. (1xEV-DO mode only)
POWer - averages the linear power of successive measurements.
Factory Preset: RMS
Remarks: For E4406A you must be in the EDGE(w/GSM), GSM,
1xEV-DO, W-CDMA, iDEN, WiDEN or Service mode to use this command. Use INSTrument:SELect to set the mode.
Power vs. Time—Resolution BW
[:SENSe]:PVTime:BANDwidth|BWIDth[:RESolution] <freq>
[:SENSe]:PVTime:BANDwidth|BWIDth[:RESolution]?
Enables you to set the resolution bandwidth. This is an advanced control that normally does not need to be changed. Setting this to a value other than the factory default, may cause invalid measurement results.
Factory Preset: 1.5 MHz
5.0 MHz for W-CDMA
Range:
30 kHz for iDEN
120 kHz for WiDEN
1 kHz to 5 MHz
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1.0 kHz to 10.0 MHz when PVT:BAND:RES:TYPE is set to FLATtop
1.0 kHz to 8.0 MHz when PVT:BAND:RES:TYPE is set to GAUSsian
Default Unit: Hz
Remarks: For E4406A you must be in the EDGE(w/GSM), GSM,
Service, 1xEV-DO, iDEN, WiDEN, or W-CDMA mode to use this command. Use INSTrument:SELect to set the mode.
Front Panel
Access:
Meas Setup
,
Advanced
,
Res BW
Power vs. Time—RBW Filter Type
[:SENSe]:PVTime:BANDwidth|BWIDth[:RESolution]:TYPE
FLATtop|GAUSsian
[:SENSe]:PVTime:BANDwidth|BWIDth[:RESolution]:TYPE?
Enables you top select the type of resolution bandwidth filter. This is an advanced control that normally does not need to be changed. Setting this to a value other than the factory default, may cause invalid measurement results.
FLATtop - a filter with a flat amplitude response, which provides the best amplitude accuracy.
GAUSsian - a filter with Gaussian characteristics, which provides the best pulse response.
Factory Preset: GAUSsian
FLATtop for 1xEV-DO, W-CDMA, WiDEN
Remarks: For E4406A you must be in the EDGE(w/GSM), GSM,
Service, 1xEV-DO, iDEN, WiDEN, or W-CDMA mode to use this command. Use INSTrument:SELect to set the mode.
Front Panel Access:
Meas Setup
,
Advanced
(iDEN, WiDEN mode)
.
Power vs. Time—Carrier Estimate Interval
[:SENSe]:PVTime:CESTimate:[TIME] <time
[:SENSe]:PVTime:CESTimate:[TIME]?
Enables you to set the time interval between carrier estimation. The measurement keeps a timer, only when the timer expires will the
202 Chapter 5
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SENSe Subsystem
measurement perform carrier estimation, then reset the timer.
Factory Preset: 10.000 s
Range:
Remarks:
0 s to 200 s
You must be in the iDEN or WiDEN mode to use this command. Use INSTrument:SELect to set the mode.
Front Panel
Access:
Meas Setup
,
Carr Est Time
Power vs. Time—Lower Mask Absolute Amplitude Levels
(Remote
Command Only)
[:SENSe]:PVTime:MASK:LIST:LOWer:ABSolute
<power>, <power>, <power>, <power>, <power>
[:SENSe]:PVTime:MASK:LIST:LOWer:ABSolute?
Enter a power level for any of your mask line segments that require an absolute minimum power limit in addition to its relative limit. Each time a measurement is made the Ref Level is determined. (This is the power level of the useful part of the burst, or midway between the upper/lower masks). Remember, as the power of the Ref Level changes, all of the relative mask power levels will change by the same amount.
Each relative limit is then compared to the Ref Level and an equivalent absolute power level is calculated. This power level is compared to the specified absolute limit for each line segment. If this calculated relative limit is lower then the absolute limit you’ve specified, then the value of the absolute limit is used for this segment. Therefore, if the absolute limit is set to a very low value (
− 200 dBm), the calculated value of the reference limit will never be lower, and the specified relative limit will always be used for that segment. See
Every time point you defined with PVTime:MASK:LOW:TIME must have a power value defined in the same order. You can put a comma in the SCPI command as a place holder for any points where an absolute power is not specified, and that segment will then use the default value.
Factory Preset and *RST: Selected standard
Range:
− 200 dBm to +100 dBm
Default Unit: dBm
Remarks: You must be in iDEN, WiDEN mode to use this command. Use INSTrument:SELect to set the mode.
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Power vs. Time—Lower Mask Points
(Remote Command Only)
[:SENSe]:PVTime:MASK:LIST:LOWer:POINts?
Query the number of elements in the lower mask. This value is determined by the number of time points entered using
[:SENSe]:PVTime:MASK:LIST:LOWer:TIME
.
Factory Preset and *RST: 2
Range:
Remarks: integer, 1 to 25
You must be in EDGE(w/GSM), iDEN, or WiDEN mode to use this command. Use INSTrument:SELect to set the mode.
Power vs. Time—Lower Mask Relative Amplitude Levels
(Remote
Command Only)
[:SENSe]:PVTime:MASK:LIST:LOWer:RELative
<rel_power>, <rel_power>, <rel_power>,
<rel_power>,<rel_power>
[:SENSe]:PVTime:MASK:LIST:LOWer:RELative?
Enter the relative power level for each horizontal line segment in the lower limit mask. There should be a power level for each time point entered using [:SENSe]:PVTime:MASK:LIST:LOWer:TIME, and they must be entered in the same order. These power levels are all relative to the defined Reference Power Level (the average power in the useful part of the data).
Any portion of the signal that has no limit line segment defined for it, will default to a very low limit (
− 100 dB relative to the reference power). This will keep the measurement from indicating a failure for that portion of the data.
Factory Preset and *RST: Selected standard
Range: +200 dB to
− 100 dB, relative to the reference power
Default Unit: dB
Remarks: You must be in EDGE(w/GSM), iDEN, or WiDEN mode to use this command. Use INSTrument:SELect to set the mode.
Power vs. Time—Lower Mask Time Points
(Remote Command Only)
[:SENSe]:PVTime:MASK:LIST:LOWer:TIME <seconds>, <seconds>,
204 Chapter 5
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SENSe Subsystem
<seconds>, <seconds>, <seconds>
[:SENSe]:PVTime:MASK:LIST:LOWer:TIME?
Enter the time points that define the horizontal line segments of the lower limit. A reference point designated “t
0
” is at the center of the useful data (usually the center of the burst). Each line segment to the right of the t
0
reference point is designated as a positive time value and each segment to the left of t
0
is a negative time value.
First enter positive values in sequence starting from t
0
, then negative values in sequence starting from t
0
. See Figure 5-5 on page 207 and the
[:SENSe]:PVTime:MASK:LIST:UPPER:TIME
example below it. (This is an upper mask example, but they work the same.)
We recommend that you select a large time value for your first and last mask points (e.g.
− 1 and +1 second). This guarantees that you’ve defined a limit for all the measured data. (See Mask Segments 4 and 9 in the
Table 5-5 on page 207 for an example.
Factory Preset and *RST: Selected standard
Range:
− 1 s to +1 s, referenced to t
0
at the center of the useful data (burst center)
1 to 25 time points in a mask
Default Unit: seconds
Remarks: You must be in the EDGE(w/GSM), iDEN, WiDEN mode to use this command. Use INSTrument:SELect to set the mode.
Power vs. Time—Upper Mask Absolute Amplitude Levels
(Remote
Command Only)
[:SENSe]:PVTime:MASK:LIST:UPPer:ABSolute
<power>, <power>, <power>, <power>, <power>
[:SENSe]:PVTime:MASK:LIST:UPPer:ABSolute?
Enter a power level for any of your mask line segments that require an absolute minimum power limit in addition to its relative limit. Each time a measurement is made the Ref Level is determined. (This is the power level of the useful part of the burst, or midway between the upper/lower masks). Remember, as the power of the Ref Level changes, all of the relative mask power levels will change by the same amount.
Each relative limit is then compared to the Ref Level and an equivalent absolute power level is calculated. This power level is compared to the specified absolute limit for each line segment. If this calculated relative
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limit is lower then the absolute limit you’ve specified, then the value of the absolute limit is used for this segment. Therefore, if the absolute limit is set to a very low value (
− 200 dBm), the calculated value of the reference limit will never be lower, and the specified relative limit will
always be used for that segment. See Figure 5-5 on page 207
.
Every time point you defined with PVT:MASK:LOW:TIME must have a power value defined in the same order. You can put a comma in the
SCPI command as a place holder for any points where an absolute power is not specified, and that segment will then use the default value.
Example:
PVT:MASK:LIST:UPP:ABS -200, -200, -58, -200,
-200, -200, -200, -58, -200
Factory Preset and *RST: Selected standard
Range:
− 200 dBm to +100 dBm
Default Unit: dBm
Remarks: You must be in EDGE(w/GSM), iDEN, WiDEN mode to use this command. Use INSTrument:SELect to set the mode.
Power vs. Time—Upper Mask Points
(Remote Command Only)
[:SENSe]:PVTime:MASK:LIST:UPPer:POINts?
Query the number of elements in the upper mask. This value is determined by the number of time points entered using
[:SENSe]:PVTime:MASK:LIST:UPPer:TIME
.
Factory Preset and *RST: 2
Range:
Remarks: integer, 1 to 25
You must be in EDGE(w/GSM), iDEN, WiDEN mode to use this command. Use INSTrument:SELect to set the mode.
Power vs. Time—Upper Mask Relative Amplitude Levels
(Remote
Command Only)
[:SENSe]:PVTime:MASK:LIST:UPPer:RELative
<rel_power>, <rel_power>, <rel_power>,
<rel_power>,<rel_power>
[:SENSe]:PVTime:MASK:LIST:UPPer:RELative?
Enter the relative power level for each horizontal line segment in the
206 Chapter 5
Figure 5-5
9
iDEN Programming Commands
SENSe Subsystem
upper limit mask. There should be a power level for each time point entered using [:SENSe]:PVTime:MASK:LIST:UPPer:TIME, and they must be entered in the same order. These power levels are all relative to the defined Reference Power Level (the average power in the useful part of the data). For an example of a mask, the associated date table, and SCPI example; see
Custom Upper Limit Mask Example
4
Power
Ref Level
6
5 t
0
1
7
2
8
3
280.0e-6
15.0e-6
450.0e-6
1
−270.0e-6
−10.0e-6
−20.0e−6
−450e-6
Entered
Value for each Time
Segment
Absolute
Time
Value
Relative Power (example
(with Ref Level =
−12 dBm)
Entered
Relative
Power
Equivalent
Absolute
Power
280
µs
295
µs
745
µs
>1 sec
− 270 µs
− 280 µs
− 300 µs
− 750 µs
+4 dBc
− 32 dBc
− 48 dBc
+100 dBc
+4 dBc
+7 dBc
− 25 dBc
− 43 dBc
− 8 dBm
− 44 dBm
− 60 dBm a
+112 dBm
− 8 dBm
− 5 dBm
− 37 dBm
− 55 dBm
Entered
Absolute
Power (dBm)
Segment
Number
− 200 dBm
− 200 dBm
− 58 dBm
− 200 dBm
− 200 dBm
− 200 dBm
− 200 dBm
− 58 dBm
1
2
3
4
5
6
7
8
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Entered
Value for each Time
Segment
Absolute
Time
Value
Relative Power (example
(with Ref Level =
−12 dBm)
Entered
Relative
Power
Equivalent
Absolute
Power
Entered
Absolute
Power (dBm)
Segment
Number
−1
<
−1 sec
+100 dBc +112 dBm
−200 dBm
9 a. Notice that this segment, with this value of Ref Level, has a calculated relative level of -60 dBm. This is lower then the specified absolute level of -58 dBm, so the -58 dBm value will be used as the test limit for the segment.
Example:
PVT:MASK:LIST:UPP:REL 4, -32, -48, 100, 4, 7,
-25, -43, 100
Factory Preset and *RST: Selected standard
Range: 200 dB to
− 100 dB, relative to the reference power
Default Unit: dB
Remarks: You must be in EDGE(w/GSM), iDEN, WiDEN mode to use this command. Use INSTrument:SELect to set the mode.
Power vs. Time—Upper Mask Time Points
(Remote Command Only)
[:SENSe]:PVTime:MASK:LIST:UPPer:TIME
<seconds>, <seconds>, <seconds>, <seconds>, <seconds>
[:SENSe]:PVTime:MASK:LIST:UPPer:TIME?
Enter the time points that define the horizontal line segments of the upper limit. A reference point designated “t
0
” is at the center of the useful data (usually the center of the burst). Each line segment to the right of the t
0
reference point is designated as a positive value and each segment to the left of t
0
is a negative value.
First enter positive values in sequence starting from t
0
, then the negative values in sequence starting from t
0
. See
and the PVT:MASK:LIST:UPPER:TIME example below it.
We recommend that you select a large time value for your first and last mask points (e.g.
− 1 and +1 second). This guarantees that you’ve defined a limit for all the measured data. (See Mask Segments 4 and 9
for an example.
Example:
PVT:MASK:LIST:UPP:TIME 280e-6, 15e-6, 1,
-270e-6, -10e-6, -20e-6, -1
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Factory Preset and *RST: Selected standard
Range:
− 1 s to +1 s, referenced to t
0
at the center of the useful data (burst center)
1 to 25 time points in a mask
Default Unit: seconds
Remarks: You must be in the EDGE(w/GSM), iDEN, WiDEN mode to use this command. Use INSTrument:SELect to set the mode.
Power vs. Time—Custom Limit Masks
(Remote Command Only)
[:SENSe]:PVTime:MASK:SELect STANdard|CUSTom
[:SENSe]:PVTime:MASK:SELect?
Select standard masks or user-defined custom masks to compare you measured data against.
Factory Preset and *RST: STANdard
Remarks: You must be in EDGE(w/GSM), iDEN, WiDEN mode to use this command. Use INSTrument:SELect to set the mode.
Power vs. Time—Trigger Source
[:SENSe]:PVTime:TRIGger:SOURce EXTernal[1]|EXTernal2
|FRAMe|LINE|IF|IMMediate|RFBurst
[:SENSe]:PVTime:TRIGger:SOURce?
Select the trigger source used to control the data acquisitions.
EXTernal 1 - front panel external trigger input
EXTernal 2 - rear panel external trigger input
FRAMe - uses the internal frame timer, which has been synchronized to the selected burst sync.
IF - internal IF envelope (video) trigger
LINE - internal power line frequency trigger
IMMediate - the next data acquisition is immediately taken, capturing the signal asynchronously (also called Free Run).
RFBurst - wideband RF burst envelope trigger that has automatic
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level control for periodic burst signals.
Factory Preset: RFBurst if the RF Communications Hardware (option
B7E) has been installed
EXTernal, if option B7E has not been installed
FRAMe for 1xEV-DO
Remarks:
IF envelope (video) (iDEN, WiDEN)
You must be in GSM, EDGE, Service, 1xEV-DO, iDen,
WiDEN, or W-CDMA mode to use this command. Use
INSTrument:SELect to set the mode.
MotoTalk Average Power (MT Avg Pwr) Measurement
Commands for querying the MotoTalk average power measurement
results and for setting to the default values are found in the “MEASure
Group of Commands” on page 146
. The equivalent front panel keys for the parameters described in the following commands, are found under the
Meas Setup
key, after the
MT Avg Pwr
measurement has been selected from the
MEASURE
key menu.
MotoTalk Average Power—Number Of Bursts Averaged
[:SENSe]:APOWer:AVERage:COUNt <integer>
[:SENSe]:APOWer:AVERage:COUNt?
Set the number of bursts that will be averaged. After the specified number of bursts (average counts), the averaging mode (terminal control) setting determines the averaging action.
Factory Preset: 20
Range: 1 to 1,000
Remarks: You must be in the iDEN mode to use this command.
Use INSTrument:SELect to set the mode.
Front Panel
Access:
Meas Setup
,
Avg Bursts
MotoTalk Average Power—Averaging State
[:SENSe]:APOWer:AVERage[:STATe] OFF|ON|0|1
[:SENSe]:APOWer:AVERage[:STATe]?
Turn averaging on or off.
Factory Preset: On
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Remarks: You must be in the GSM mode to use this command.
Use INSTrument:SELect to set the mode.
Front Panel
Access:
Meas Setup
,
Avg Bursts
MotoTalk Average Power—Resolution BW
[:SENSe]:APOWer:BANDwidth|BWIDth[:RESolution] <bandwidth>
[:SENSe]:APOWer:BANDwidth|BWIDth[:RESolution]?
Set the resolution BW. This is an advanced control that normally does not need to be changed. Setting this to a value other than the factory default, may cause invalid measurement results.
Factory Preset: 25.600 kHz
Range: 1 kHz to 5 MHz
Default Unit: Hz
Remarks: You must be in the iDEN mode to use this command.
Use INSTrument:SELect to set the mode.
Front Panel
Access:
Meas Setup
,
Advanced
,
Res BW
MotoTalk Average Power—RBW Filter Type
[:SENSe]:APOWer:BANDwidth|BWIDth[:RESolution]:TYPE
FLATtop|GAUSsian
[:SENSe]:APOWer:BANDwidth|BWIDth[:RESolution]:TYPE?
Select the type of resolution bandwidth filter. This is an advanced control that normally does not need to be changed. Setting this to a value other than the factory default, may cause invalid measurement results.
FLATtop - a filter with a flat amplitude response, which provides the best amplitude accuracy.
GAUSsian - a filter with Gaussian characteristics, which provides the best pulse response.
Factory Preset: GAUSsian
Remarks: You must be in the iDEN mode to use this command.
Use INSTrument:SELect to set the mode.
Front Panel
Access:
Meas Setup
,
Advanced
,
RBW Filter
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MotoTalk Average Power—Burst Identification Method
[:SENSe]:APOWer:BIDMethod RFAmplitude|SWORd
[:SENSe]:APOWer:BIDMethod?
Select the method of identifying normal (traffic) bursts.
RFAMplitude – the measurement uses the amplitude variation within a burst and the burst position to identify the type of burst.
SWORd – the measurement performs demodulation and use the sync word to identify the type of burst.
The
RF Amptd
method is faster than the
Sync Word
method. For either method to work well, the
Res BW
should not be set to more than 35 kHz.
Factory Preset: RFA
Remarks: You must be in the iDEN mode to use this command.
Use INSTrument:SELect to set the mode.
Front Panel
Access:
Meas Setup
,
Burst ID Method
MotoTalk Average Power—Decimation Factor
[:SENSe]:APOWer:DECimation[:FACTor] <integer>
[:SENSe]:APOWer:DECimation[:FACTor]?
Set the amount of data decimation done by the hardware and/or the firmware in order to decrease the number of acquired points in a long capture time. This is the amount of data that the measurement ignores.
For example, if 4 is selected, three out of every four data points will be thrown away. So every 4th data point will be kept.
When Decimation State is Auto, the Decimation Factor is set to zero (0).
Zero indicates auto decimation (determined by measurement). 1-4 indicates manually controlled decimation factor.
This is an advanced control that normally does not need to be changed.
Setting this to a value other than the factory default, may cause invalid measurement results.
Factory Preset and *RST: 0
Range:
Remarks:
0 to 4
You must be in the iDEN mode to use this command.
Use INSTrument:SELect to set the mode.
Front Panel
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Meas Setup
,
Advanced
,
Decimation
iDEN Programming Commands
SENSe Subsystem
MotoTalk Average Power—Decimation State
[:SENSe]:APOWer:DECimation:STATe OFF|ON|0|1
[:SENSe]:APOWer:DECimation:STATe?
Sets the decimation function on or off. This is an advanced control that normally does not need to be changed. Setting this to a value other than the factory default, may cause invalid measurement results.
Select auto (default value) or manual (user entered value) to set the resolution bandwidth.
Factory Preset and *RST: On
Remarks: You must be in the iDEN mode to use this command.
Use INSTrument:SELect to set the mode.
Front Panel
Access:
Meas Setup
,
Advanced
,
Decimation
MotoTalk Average Power—Measurement Method
[:SENSe]:APOWer:MEASure BURst|GATEd|GBURst
[:SENSe]:APOWer:MEASure?
Sets the measurement method to be used.
BURst - When
Meas Method
is set to
Burst
, the measurement acquires
Avg Bursts
number of slots, search all the traffic burst in the captured data, compute the average power of each traffic burst.
If the number of traffic bursts is less than the
Avg BurstS
(there might be preamble or sync bursts in the captured data), the measurement will acquire more data, and repeat the process until the total number of traffic bursts reaches the average count. The average, maximum, and minimum of the average burst power are also reported.
GATEd - When
Meas Method
is set to
Gated
, the measurement captures
Gated Time
number of slots, and computes the average power of the entire data record.
GBURst - When
Meas Method
is set to
Gated & Burst
, the measurement captures
Gated Time
number of slots, computes the average power of the entire data record, then finds all the traffic bursts in the captured data, computes average power of each traffic bursts. The average, maximum, and minimum of the average traffic burst power are also reported.
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Factory Preset: BURst
Front Panel
Access:
Meas Setup
,
Meas Method
MotoTalk Average Power—Gated (Sweep) Time
[:SENSe]:APOWer:SWEep:TIME <integer>
[:SENSe]:APOWer:SWEep:TIME?
Set the number of slots which are used in each data acquisition. Each slot is 90 ms.
Factory Preset: 20
Range: 1 to 200 time slots
Remarks: You must be in the iDEN mode to use this command.
Use INSTrument:SELect to set the mode.
Front Panel
Access:
Meas Setup
,
Gated Time
MotoTalk Average Power—Trigger Source
[:SENSe]:APOWer:TRIGger:SOURce
IMMediate|RFBurst|VIDeo|EXTernal[1]|EXTernal2
[:SENSe]:APOWer:TRIGger:SOURce?
Select the trigger source used to control the data acquisitions.
Set the trigger delay when using an external trigger. Set the trigger value to zero (0) seconds to turn off the delay.
IMMediate – the next data acquisition is immediately taken, capturing the signal asynchronously (also called free run)
RFBurst – wideband RF burst envelope trigger that has automatic level control for periodic burst signals
VIDeo - an internal IF envelope trigger. It triggers on an absolute threshold level of the signal passed by the IF.
EXT or EXT1 is the front panel trigger input
EXT2 is the rear panel trigger input
Factory Preset: RFBurst
Front Panel
Access:
Meas Setup
,
Trig Source
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MotoTalk Transient Error Vector Magnitude (MT
Trans EVM) Measurement
Commands for querying the MotoTalk transient error vector magnitude measurement results and for setting to the default values are found in the
“MEASure Group of Commands” on page 146
. The equivalent front panel keys for the parameters described in the following commands, are found under the
Meas Setup
key, after the
MT Trans EVM
measurement has been selected from the
MEASURE
key menu.
MotoTalk Transient Error Vector Magnitude—Frequency
Hopping Delta Factor
[:SENSe]:TEVM:FOFFset <freq>
[:SENSe]:TEVM:FOFFset?
Set the frequency hopping delta or offset factor.
Factory Preset: 0.0
Range:
Remarks:
0.0 kHz to 1.00000 MHz
You must be in the iDEN mode to use this command.
Use INSTrument:SELect to set the mode.
Front Panel
Access:
Meas Setup
,
Hop Freq Ofst
MotoTalk Transient Error Vector Magnitude—Trigger Source
[:SENSe]:TEVM:TRIGger:SOURce
IMMediate|RFBurst|EXTernal[1]|EXTernal2
[:SENSe]:TEVM:TRIGger:SOURce?
Select the trigger source used to control the data acquisitions.
IMMediate – the next data acquisition is immediately taken, capturing the signal asynchronously (also called free run)
RFBurst – wideband RF burst envelope trigger that has automatic level control for periodic burst signals
EXT or EXT1 is the front panel trigger input
EXT2 is the rear panel trigger input
Factory Preset: EXT1
Front Panel
Access:
Meas Setup
,
Trig Source
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MotoTalk Transient Error Vector Magnitude—RBW Filter Type
[:SENSe]:TEVM:BANDwidth|BWIDth:RESolution:TYPE
FLATtop|GAUSsian
[:SENSe]:TEVM:BANDwidth|BWIDth:RESolution:TYPE?
Select the type of resolution bandwidth filter. This is an advanced control that normally does not need to be changed. Setting this to a value other than the factory default, may cause invalid measurement results.
FLATtop - a filter with a flat amplitude response, which provides the best amplitude accuracy.
GAUSsian - a filter with Gaussian characteristics, which provides the best pulse response.
Factory Preset: GAUSsian
Remarks: You must be in the iDEN mode to use this command.
Use INSTrument:SELect to set the mode.
Front Panel
Access:
Meas Setup
,
Advanced
,
RBW Filter
MotoTalk Transient Error Vector Magnitude—Resolution BW
[:SENSe]:TEVM:BANDwidth|BWIDth[:RESolution]?
Set the resolution BW. This is an advanced control that normally does not need to be changed. Setting this to a value other than the factory default, may cause invalid measurement results.
Factory Preset: 25.600 kHz
Range: 1.000 kHz to 1.00000 MHz
Default Unit: Hz
Remarks: You must be in the iDEN mode to use this command.
Use INSTrument:SELect to set the mode.
Front Panel
Access:
Meas Setup
,
Advanced
,
Res BW
MotoTalk Transient Error Vector Magnitude—Decimation
Factor
[:SENSe]:TEVM:DECimation[:FACTor] <integer>
[:SENSe]:TEVM:DECimation[:FACTor]?
Set the amount of data decimation done by the hardware and/or the
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firmware in order to decrease the number of acquired points in a long capture time. This is the amount of data that the measurement ignores.
For example, if 4 is selected, three out of every four data points will be thrown away. So every 4th data point will be kept.
When Decimation State is Auto, the Decimation Factor is set to zero (0).
Zero indicates auto decimation (determined by measurement). 1-4 indicates manually controlled decimation factor.
This is an advanced control that normally does not need to be changed.
Setting this to a value other than the factory default, may cause invalid measurement results.
Factory Preset and *RST: 0
Range:
Remarks:
0 to 4
You must be in the iDEN mode to use this command.
Use INSTrument:SELect to set the mode.
Front Panel
Access:
Meas Setup
,
Advanced
,
Decimation
MotoTalk Transient Error Vector Magnitude—Decimation State
[:SENSe]:TEVM:DECimation:STATe OFF|ON|0|1
[:SENSe]:TEVM:DECimation:STATe?
Set the decimation function on or off. This is an advanced control that normally does not need to be changed. Setting this to a value other than the factory default, may cause invalid measurement results.
Factory Preset and *RST: On
Remarks: You must be in the iDEN mode to use this command.
Use INSTrument:SELect to set the mode.
Front Panel
Access:
Meas Setup
,
Advanced
,
Decimation
RF Port Input Attenuation
[:SENSe]:POWer[:RF]:ATTenuation <rel_power>
[:SENSe]:POWer[:RF]:ATTenuation?
Set the RF input attenuator. This value is set at its auto value if input attenuation is set to auto.
Factory Preset
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and *RST: 0 dB
12.0 dB for iDEN
Range: 0 to 40 dB
Default Unit: dB
Remarks: You must be in the Service, cdmaOne, GSM, NADC,
PDC, cdma2000, W-CDMA, iDEN, WiDEN mode to use this command. Use INSTrument:SELect to set the mode.
Front Panel
Access:
Input, Input Atten
RF Port Power Range Maximum Total Power
[:SENSe]:POWer[:RF]:RANge[:UPPer] <power>
[:SENSe]:POWer[:RF]:RANge[:UPPer]?
Set the maximum expected total power level at the radio unit under test. This value is ignored if RF port power range is set to auto.
External attenuation required above 30 dBm.
Factory Preset and *RST:
− 15.0 dBm
Range:
− 100 to 80 dBm for GSM
− 100 to 27.7 dBm for cdmaOne, iDEN
− 200 to 50 dBm for NADC, PDC
− 200 to 100 dBm for cdma2000, W-CDMA
Default Unit: dBm
Remarks: Global to the current mode. This is coupled to the RF input attenuation
You must be in the Service, cdmaOne, GSM, NADC,
PDC, cdma2000, W-CDMA, iDEN, WiDEN mode to use this command. Use INSTrument:SELect to set the mode.
Front Panel
Access:
Input, Max Total Pwr (at UUT)
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Radio Setup
Radio Carrier Configuration
[:SENSe]:RADio:CARRier[:TYPE] AUTO|I25|I50|O50|I75|I100
[:SENSe]:RADio:CARRier[:TYPE]?
Select the method used to determine the configuration of the carrier being measured.
If you set the carrier configuration type to ‘AUTO’, the carrier configuration is detected automatically. To detect the carrier configuration, the instrument captures a signal with a wide bandwidth, covering 100 kHz. When you select one of the other configuration options, the carrier configuration is predefined. In this case, the instrument captures a signal with a bandwidth only covering the predefined carrier configuration.
Selecting one of the predefined configuration options will reduce measurement time.
Factory Preset: AUTO
Saved State: Saved in instrument state
Range:
Remarks:
Auto | 25kHz | 50kHz | 50kHz outer | 75kHz | 100kHz
You must be in the WiDEN mode to use this command.
Use INSTrument:SELect to set the mode.
Global to the current mode.
Version A.07.05 or later History:
Front Panel
Access:
Mode Setup, Radio
Radio Carrier Configuration, Actual (Remote Command Only)
[:SENSe]:RADio:CARRier[:TYPE]:ACTual?
At the start of measurements (that is when you select a measurement, press
Restart
, or changing some parameters), the instrument detects the actual carrier configuration. The detected carrier configuration is returned by this query. This query is useful particularly when Carrier
Config is set to AUTO. When Carrier Config is set to predefined one, this parameter is equal to the predefined. For more information on
Carrier Config, refer to
“Radio Carrier Configuration” on page 219
Saved State: Saved in instrument state
Remarks: You must be in the WiDEN mode to use this command.
Use INSTrument:SELect to set the mode.
Global to the current mode.
Version A.07.05 or later History:
Front Panel
Access:
No front panel access
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Radio Carrier Multiple
[:SENSe]:RADio:CARRier:NUMBer SINGle|MULTiple
[:SENSe]:RADio:CARRier:NUMBer?
Select if single or multiple carriers are present on the output of the base station under test. This enables/disables a software filter for the rho and code domain power measurements.
Factory Preset and *RST: Single
Remarks: You must be in the iDEN mode to use this command.
Use INSTrument:SELect to set the mode.
Front Panel
Access:
Mode Setup, Demod, RF Carrier
Radio Color Code
[:SENSe]:RADio:CCODe <integer>
[:SENSe]:RADio:CCODe?
Set the Color Code (0-95) which is used to define synchronization and pilot symbols in Split 3:1 and Enhanced 6:1.
Factory Preset: 39
Remarks: You must be in iDEN, WiDEN mode to use this command. Use INSTrument:SELect to set the mode.
Front Panel
Access:
Mode Setup
,
Radio
,
Color Code
Radio Device Under Test
[:SENSe]:RADio:DEVice INBound|OUTBound
[:SENSe]:RADio:DEVice?
Select the type of radio device to be tested. If you are testing a base station, it must be put into the test mode to transmit known bit patterns.
Outbound – Base station transmitter test
Inbound – Mobile station transmitter test
Factory Preset and *RST: INBound
Remarks: You must be in the iDEN mode to use this command.
Use INSTrument:SELect to set the mode.
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This command is not available in the WiDEN mode.
Global to current mode.
Front Panel
Access:
Mode Setup, Radio, Device
Radio Format (Standard)
[:SENSe]:RADio:FORMat M16QAM|M64QAM|DMCA|DJSMr
[:SENSe]:RADio:FORMat?
Select the format that testing will be compliant with when measurements are made.
M16QAM, is the standard iDEN format defined by Motorola
M64QAM, is the standard iDEN format defined by Motorola
DMCA, is the standard iDEN format defined by Motorola
DJSMR, is Japanese standard format that is based on the ARIB
RCR-32A standard
Factory Preset and *RST: M16QAM
Remarks: You must be in the iDEN mode to use this command.
Use INSTrument:SELect to set the mode.
This command is not available in the WiDEN mode.
Version A.03.00 or later History:
Front Panel
Access:
Mode Setup, Radio, Format
Radio Inbound Slot Setup
[:SENSe]:RADio:SLOT:INBound TCHFull|TCHS31|TCHS31T|TCHE61
[:SENSe]:RADio:SLOT:INBound?
Select the inbound signal slot format
Idle (including Pilot and MAC) or
Active (including Pilot, MAC, and Data). Define the reference point of the mask timing.
TCHFull - Legacy Full Reserved Access slot defined by Motorola. Set to the idle slot that includes the Pilot and MAC channels, of which waveform is bursted.
TCHS31 - Split 3:1 Reserved Access slot (with pseudo training) defined by Motorola. Set to the idle slot that includes the Pilot and
MAC channels, of which waveform is bursted.
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TCHS31T - Split 3:1 Reserved Access with Training defined by
Motorola. Set to the idle slot that includes the Pilot and MAC channels, of which waveform is bursted.
TCHE61 - Enhanced 6:1 Full Reserved Access Slot format defined by
Motorola. Set to the idle slot that includes the Pilot and MAC channels, of which waveform is bursted.
Factory Preset: TCHFull
Remarks: You must be in iDEN mode to use this command. Use
INSTrument:SELect to set the mode.
This command is not available in the WiDEN mode.
Front Panel
Access:
Mode Setup
,
Radio
,
Inbound Slot
Radio Outbound Slot Setup
[:SENSe]:RADio:SLOT:OUTBound TCHFull|TCHS31|TCHS31T|TCHE61
[:SENSe]:RADio:SLOT:OUTBound?
Select the outbound signal slot format
Idle (including Pilot and MAC) or
Active (including Pilot, MAC, and Data). Define the reference point of the mask timing.
TCHFull - Legacy Full Reserved Access slot defined by Motorola. Set to the idle slot that includes the Pilot and MAC channels, of which waveform is bursted.
TCHS31 - Split 3:1 Reserved Access slot (with pseudo training) defined by Motorola. Set to the idle slot that includes the Pilot and
MAC channels, of which waveform is bursted.
TCHS31T - Split 3:1 Reserved Access with Training defined by
Motorola. Set to the idle slot that includes the Pilot and MAC channels, of which waveform is bursted.
TCHE61 - Enhanced 6:1 Full Reserved Access Slot format defined by
Motorola. Set to the idle slot that includes the Pilot and MAC channels, of which waveform is bursted.
Factory Preset: TCHFull
Remarks: You must be in iDEN mode to use this command. Use
INSTrument:SELect to set the mode.
This command is not available in the WiDEN mode.
Front Panel
Access:
Mode Setup
,
Radio
,
Inbound Slot
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Spectrum (Frequency-Domain) Measurement
Commands for querying the spectrum measurement results and for
setting to the default values are found in the “MEASure Group of
Commands” on page 146 . The equivalent front panel keys for the
parameters described in the following commands, are found under the
Meas Setup
key, after the
Spectrum (Freq Domain)
measurement has been selected from the
MEASURE
key menu.
Spectrum—Data Acquisition Packing
[:SENSe]:SPECtrum:ACQuisition:PACKing
AUTO|LONG|MEDium|SHORt
[:SENSe]:SPECtrum:ACQuisition:PACKing?
Select the amount of data acquisition packing. This is an advanced control that normally does not need to be changed.
Factory Preset and *RST: Auto
Remarks: To use this command, the appropriate mode should be selected with INSTrument:SELect.
Back door for all meas DIAG:ACQ:PACKmode]
Spectrum—ADC Dither
[:SENSe]:SPECtrum:ADC:DITHer[:STATe] AUTO|ON|OFF|2|1|0
[:SENSe]:SPECtrum:ADC:DITHer[:STATe]?
Turn the ADC dither on or off. This is an advanced control that normally does not need to be changed.
Factory Preset and *RST: Auto
Remarks: To use this command, the appropriate mode should be selected with INSTrument:SELect.
Spectrum—ADC Range
[:SENSe]:SPECtrum:ADC:RANGe AUTO|APEak|APLock
|M6|P0|P6|P12|P18|P24|NONE
[:SENSe]:SPECtrum:ADC:RANGe?
Select the range for the gain-ranging that is done in front of the ADC.
This is an advanced control that normally does not need to be changed.
Auto peak ranging is the default for this measurement. If you are measuring a CW signal please see the description below.
• Auto - automatic range
For FFT spectrums - auto ranging should not be not be used. An
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exception to this would be if you know that your signal is
“bursty”. Then you might use auto to maximize the time domain dynamic range as long as you are not very interested in the FFT data.
• Auto Peak - automatically peak the range
For CW signals, the default of auto-peak ranging can be used, but a better FFT measurement of the signal can be made by selecting one of the manual ranges that are available: M6, P0 - P24.
Auto peaking can cause the ADC range gain to move monotonically down during the data capture. This movement should have negligible effect on the FFT spectrum, but selecting a manual range removes this possibility. Note that if the CW signal being measured is close to the auto-ranging threshold, the noise floor may shift as much as 6 dB from sweep to sweep.
• Auto Peak Lock - automatically peak lock the range
For CW signals, auto-peak lock ranging may be used. It will find the best ADC measurement range for this particular signal and will not move the range as auto-peak can. Note that if the CW signal being measured is close to the auto-ranging threshold, the noise floor may shift as much as 6 dB from sweep to sweep.
For “bursty” signals, auto-peak lock ranging should not be used.
The measurement will fail to operate, since the wrong (locked)
ADC range will be chosen often and overloads will occur in the
ADC.
• M6 - manually selects an ADC range that subtracts 6 dB of fixed gain across the range. Manual ranging is best for CW signals.
• P0 to 24 - manually selects ADC ranges that add 0 to 24 dB of fixed gain across the range. Manual ranging is best for CW signals.
• None - turns off any auto-ranging without making any changes to the current setting.
Factory Preset and *RST: Auto peak
Remarks: To use this command, the appropriate mode should be selected with INSTrument:SELect.
Backdoor for all meas DIAG:ADC:RANGe
Spectrum—Average Clear
[:SENSe]:SPECtrum:AVERage:CLEAr
The average data is cleared and the average counter is reset.
Remarks: To use this command, the appropriate mode should be selected with INSTrument:SELect.
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Spectrum—Number of Averages
[:SENSe]:SPECtrum:AVERage:COUNt <integer>
[:SENSe]:SPECtrum:AVERage:COUNt?
Set the number of ‘sweeps’ that will be averaged. After the specified number of ‘sweeps’ (average counts), the averaging mode (terminal control) setting determines the averaging action.
Factory Preset and *RST: 25
Range:
Remarks:
1 to 10,000
To use this command, the appropriate mode should be selected with INSTrument:SELect.
Spectrum—Averaging State
[:SENSe]:SPECtrum:AVERage[:STATe] OFF|ON|0|1
[:SENSe]:SPECtrum:AVERage[:STATe]?
Turn averaging on or off.
Factory Preset and *RST: On
Remarks: To use this command, the appropriate mode should be selected with INSTrument:SELect.
Spectrum—Averaging Mode
[:SENSe]:SPECtrum:AVERage:TCONtrol EXPonential|REPeat
[:SENSe]:SPECtrum:AVERage:TCONtrol?
Select the type of termination control used for the averaging function.
This determines the averaging action after the specified number of
‘sweeps’ (average count) is reached.
Exponential - Each successive data acquisition after the average count is reached, is exponentially weighted and combined with the existing average.
Repeat - After reaching the average count, the averaging is reset and a new average is started.
Factory Preset and *RST: Exponential
Remarks: To use this command, the appropriate mode should be selected with INSTrument:SELect.
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Exponential means:
Avg
N
=
Avg
--------------------
N
(
–
Repeat means: reset to zero when N is reached.
Exponential means: continue averaging after N is reached, but keep N fixed.
Spectrum—Averaging Type
[:SENSe]:SPECtrum:AVERage:TYPE
LOG|MAXimum|MINimum|RMS|SCALar
[:SENSe]:SPECtrum:AVERage:TYPE?
Select the type of averaging.
Log
− The log of the power is averaged. (This is also known as video averaging.)
Maximum
− The maximum values are retained.
Minimum
− The minimum values are retained.
RMS
− The power is averaged, providing the rms of the voltage.
Scalar
− The voltage is averaged.
Factory Preset and *RST: Log
Remarks: To use this command, the appropriate mode should be selected with INSTrument:SELect.
Spectrum—Pre-ADC Bandpass Filter
[:SENSe]:SPECtrum:BANDwidth|BWIDth:PADC OFF|ON|0|1
[:SENSe]:SPECtrum:BANDwidth|BWIDth:PADC?
Turn the pre-ADC bandpass filter on or off. This is an advanced control that normally does not need to be changed.
Remarks: To use this command, the appropriate mode should be selected with INSTrument:SELect.
Spectrum—Pre-FFT BW Auto
[:SENSe]:SPECtrum:BANDwidth|BWIDth:PFFT:AUTO OFF|ON|0|1
[:SENSe]:SPECtrum:BANDwidth|BWIDth:PFFT:AUTO?
Select auto or manual control of the pre-FFT BW. This is an advanced control that normally does not need to be changed.
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Auto - couples the pre-FFT BW to the frequency span.
Manual - the pre-FFT BW is uncoupled from the frequency span.
Remarks: To use this command, the appropriate mode should be selected with INSTrument:SELect.
Spectrum—Pre-FFT BW
[:SENSe]:SPECtrum:BANDwidth|BWIDth:PFFT[:SIZE] <freq>
[:SENSe]:SPECtrum:BANDwidth|BWIDth:PFFT[:SIZE]?
Set the pre-FFT bandwidth. This is an advanced control that normally does not need to be changed.
Frequency span, resolution bandwidth, and the pre-FFT bandwidth settings are normally coupled. If you are not auto-coupled, there can be combinations of these settings that are not valid.
Factory Preset and *RST: 1.55 MHz
Range:
Remarks:
1.25 MHz for cdmaOne
155 kHz, for iDEN mode
1 Hz to 10 MHz
To use this command, the appropriate mode should be selected with INSTrument:SELect.
Spectrum—Pre-FFT BW Filter Type
[:SENSe]:SPECtrum:BANDwidth|BWIDth:PFFT:TYPE FLAT|GAUSsian
[:SENSe]:SPECtrum:BANDwidth|BWIDth:PFFT:TYPE?
Select the type of pre-FFT filter that is used. This is an advanced control that normally does not need to be changed.
Flat top- a filter with a flat amplitude response, which provides the best amplitude accuracy.
Gaussian - a filter with Gaussian characteristics, which provides the best pulse response.
Factory Preset and *RST: Flat top
Remarks: To use this command, the appropriate mode should be selected with INSTrument:SELect.
Spectrum—Resolution BW
[:SENSe]:SPECtrum:BANDwidth|BWIDth[:RESolution] <freq>
[:SENSe]:SPECtrum:BANDwidth|BWIDth[:RESolution]?
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Set the resolution bandwidth for the FFT. This is the bandwidth used for resolving the FFT measurement. It is not the pre-FFT bandwidth.
This value is ignored if the function is auto-coupled.
Frequency span, resolution bandwidth, and the pre-FFT bandwidth settings are normally coupled. If you are not auto-coupled, there can be combinations of these settings that are not valid.
Factory Preset and *RST: 20 kHz
Range:
Remarks:
250 Hz, for iDEN mode
0.10 Hz to 3 MHz
To use this command, the appropriate mode should be selected with INSTrument:SELect.
Spectrum—Resolution BW Auto
[:SENSe]:SPECtrum:BANDwidth|BWIDth[:RESolution]:AUTO
OFF|ON|0|1
[:SENSe]:SPECtrum:BANDwidth|BWIDth[:RESolution]:AUTO?
Select auto or manual control of the resolution BW. The automatic mode couples the resolution bandwidth setting to the frequency span.
Factory Preset and *RST: On
Remarks:
Off, for iDEN mode
To use this command, the appropriate mode should be selected with INSTrument:SELect.
Decimation of Spectrum Display
[:SENSe]:SPECtrum:DECimate[:FACTor] <integer>
[:SENSe]:SPECtrum:DECimate[:FACTor]?
Set the amount of data decimation done by the hardware and/or the software. Decimation by 3 keeps every third sample, throwing away the two in between. Similarly, decimation by 5 keeps every fifth sample, throwing away the four in between.
Using zero (0) decimation selects the automatic mode. The measurement will then automatically choose decimation by “1” or “2” as is appropriate for the bandwidth being used. This is an advanced control that normally does not need to be changed.
Factory Preset and *RST: 0
Range: 0 to 1000, where 0 sets the function to automatic
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To use this command, the appropriate mode should be selected with INSTrument:SELect.
Decimation of 1-4 uses Natasha hardware. Decimation.
Beyond 4 uses a combination of software and hardware decimation.
Version A.02.00 or later
Spectrum—FFT Length
[:SENSe]:SPECtrum:FFT:LENGth <integer>
[:SENSe]:SPECtrum:FFT:LENGth?
Set the FFT length. This value is only used if length control is set to manual. The value must be greater than or equal to the window length value. Any amount greater than the window length is implemented by zero-padding. This is an advanced control that normally does not need to be changed.
Factory Preset and *RST: 4096
Range:
Remarks:
32768, for iDEN mode
8 to 1,048,576
History:
To use this command, the appropriate mode should be selected with INSTrument:SELect.
Short form changed from LENgth to LENGth, A.03.00
Spectrum—FFT Length Auto
[:SENSe]:SPECtrum:FFT:LENGth:AUTO OFF|ON|0|1
[:SENSe]:SPECtum:FFT:LENGth:AUTO?
Select auto or manual control of the FFT and window lengths.
This is an advanced control that normally does not need to be changed.
Auto - the window lengths are coupled to resolution bandwidth, window type (FFT), pre-FFT bandwidth (sample rate) and
SENSe:SPECtrum:FFT:RBWPoints.
Manual - lets you set SENSe:SPECtrum:FFT:LENGth and
SENSe:SPECtrum:FFT:WINDow:LENGth
.
Factory Preset and *RST: Auto
Remarks: To use this command, the appropriate mode should be
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History: selected with INSTrument:SELect.
Short form changed from LENgth to LENGth, A.03.00
Spectrum—FFT Minimum Points in Resolution BW
[:SENSe]:SPECtrum:FFT:RBWPoints <real>
[:SENSe]:SPECtum:FFT:RBWPoints?
Set the minimum number of data points that will be used inside the resolution bandwidth. The value is ignored if length control is set to manual. This is an advanced control that normally does not need to be changed.
Factory Preset and *RST: 1.30
Range:
Remarks:
0.1 to 100
To use this command, the appropriate mode should be selected with INSTrument:SELect.
Spectrum—Window Length
[:SENSe]:SPECtrum:FFT:WINDow:LENGth <integer>
[:SENSe]:SPECtrum:FFT:WINDow:LENGth?
Set the FFT window length. This value is only used if length control is set to manual. This is an advanced control that normally does not need to be changed.
Factory Preset and *RST: 706
Range:
Remarks:
5648, for iDEN mode
8 to 1,048,576
History:
To use this command, the appropriate mode should be selected with INSTrument:SELect.
Short form changed from LENgth to LENGth, A.03.00
Spectrum—FFT Window
[:SENSe]:SPECtrum:FFT:WINDow[:TYPE] BH4Tap|BLACkman|FLATtop
|GAUSsian|HAMMing|HANNing|KB70|KB90|KB110|UNIForm
[:SENSe]:SPECtrum:FFT:WINDow[:TYPE]?
Select the FFT window type.
BH4Tap - Blackman Harris with 4 taps
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Blackman - Blackman
Flat Top - flat top, the default (for high amplitude accuracy)
Gaussian - Gaussian with alpha of 3.5
Hamming - Hamming
Hanning - Hanning
KB70, 90, and 110 - Kaiser Bessel with sidelobes at
− 70, − 90, or
− 110 dBc
Uniform - no window is used. (This is the unity response.)
Factory Preset and *RST: Flat top
Remarks: This selection affects the acquisition point quantity and the FFT size, based on the resolution bandwidth selected.
To use this command, the appropriate mode should be selected with INSTrument:SELect.
Spectrum—Frequency Span
[:SENSe]:SPECtrum:FREQuency:SPAN <freq>
[:SENSe]:SPECtrum:FREQuency:SPAN?
Set the frequency span to be measured.
Factory Preset and *RST: 1 MHz
Range:
100 kHz for iDEN mode
10 Hz to 10 MHz (15 MHz when Service mode is selected)
Default Unit: Hz
Remarks: The actual measured span will generally be slightly wider due to the finite resolution of the FFT.
To use this command, the appropriate mode should be selected with INSTrument:SELect.
Spectrum—Trigger Source
[:SENSe]:SPECtrum:TRIGger:SOURce EXTernal[1]|EXTernal 2|
FRAMe|IF|LINE|IMMediate|RFBurst
[:SENSe]:SPECtrum:TRIGger:SOURce?
Select the trigger source used to control the data acquisitions.
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External 1 - front panel external trigger input
External 2 - rear panel external trigger input
Frame - internal frame timer from front panel input
IF - internal IF envelope (video) trigger
Line - internal line trigger
Immediate - the next data acquisition is immediately taken (also called free run)
RF Burst - internal wideband RF burst envelope trigger that has automatic level control for periodic burst signals
Factory Preset and *RST: Immediate (free run)
Remarks:
RF burst, for GSM, iDEN mode
To use this command, the appropriate mode should be selected with INSTrument:SELect.
Burst Sync Delay
[:SENSe]:SYNC:BURSt:DELay <time>
[:SENSe]:SYNC:BURSt:DELay?
Set the delay for the burst measurement position from the reference position that is determined by sync word or the burst rising/falling edges.
Factory Preset and *RST: 0 sec
Range:
− 500 ms to 500 ms
Default Unit: seconds
Remarks: You must be in the iDEN, NADC or PDC mode to use this command. Use INSTrument:SELect to set the mode.
Burst Search Threshold
[:SENSe]:SYNC:STHReshold <rel_power>
[:SENSe]:SYNC:STHReshold?
Set the power threshold, relative to the peak power, that is used to determine the burst rising edge and falling edge.
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Factory Preset and *RST:
− 30 dB
Range:
− 200 to − 0.01 dB
Default Unit: dB
Remarks: You must be in the iDEN, NADC or PDC mode to use this command. Use INSTrument:SELect to set the mode.
Front Panel
Access:
Mode Setup, Trigger, Burst Search Threshold
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Waveform (Time-Domain) Measurement
Commands for querying the waveform measurement results and for setting to the default values are found in the
. The equivalent front panel keys for the parameters described in the following commands, are found under the
Meas Setup
key, after the
Waveform (Time Domain)
measurement has been selected from the
MEASURE
key menu.
Waveform—Pre-ADC Bandpass Filter
[:SENSe]:WAVeform:ADC:FILTer:[:STATe] OFF|ON|0|1
[:SENSe]:WAVeform:ADC:FILTer:[:STATe]?
Turn the pre-ADC bandpass filter on or off. This is an Advanced control that normally does not need to be changed.
Preset:
Remarks:
Off
To use this command, the appropriate mode should be selected with INSTrument:SELect.
Waveform—ADC Range
[:SENSe]:WAVeform:ADC:RANGe AUTO|APEak|APLock|GROund
|M6|P0|P6|P12|P18|P24|
[:SENSe]:WAVeform:ADC:RANGe?
Select the range for the gain-ranging that is done in front of the ADC.
This is an Advanced control that normally does not need to be changed.
Auto - automatic range
Auto Peak - automatically peak the range
Auto Peak Lock - automatically peak lock the range
Ground - ground
M6 - subtracts 6 dB of fixed gain across the range
P0 to 24 - adds 0 to 24 dB of fixed gain across the range
Factory Preset and *RST: Auto
Remarks: To use this command, the appropriate mode should be selected with INSTrument:SELect.
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Waveform—Number of Averages
[:SENSe]:WAVeform:AVERage:COUNt <integer>
[:SENSe]:WAVeform:AVERage:COUNt?
Set the number of sweeps that will be averaged. After the specified number of sweeps (average counts), the averaging mode (terminal control) setting determines the averaging action.
Factory Preset and *RST: 10
Range:
Remarks:
1 to 10,000
To use this command, the appropriate mode should be selected with INSTrument:SELect.
Waveform—Averaging State
[:SENSe]:WAVeform:AVERage[:STATe] OFF|ON|0|1
[:SENSe]:WAVeform:AVERage[:STATe]?
Turn averaging on or off.
Factory Preset and *RST: Off
Remarks: To use this command, the appropriate mode should be selected with INSTrument:SELect.
Waveform—Averaging Mode
[:SENSe]:WAVeform:AVERage:TCONtrol EXPonential|REPeat
[:SENSe]:WAVeform:AVERage:TCONtrol?
Select the type of termination control used for the averaging function.
This determines the averaging action after the specified number of
‘sweeps’ (average count) is reached.
Exponential - Each successive data acquisition after the average count is reached, is exponentially weighted and combined with the existing average.
Repeat - After reaching the average count, the averaging is reset and a new average is started.
Factory Preset and *RST: Exponential
Remarks: To use this command, the appropriate mode should be selected with INSTrument:SELect.
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Avg
N
=
Avg
--------------------
N
(
–
Repeat means: reset to zero when N is reached.
Exponential means: continue averaging after N is reached, but keep N fixed.
Waveform—Averaging Type
[:SENSe]:WAVeform:AVERage:TYPE
LOG|MAXimum|MINimum|RMS|SCALar
[:SENSe]:WAVeform:AVERage:TYPE?
Select the type of averaging.
Log - The log of the power is averaged. (This is also known as video averaging.)
Maximum - The maximum values are retained.
Minimum - The minimum values are retained.
RMS - The power is averaged, providing the rms of the voltage.
Factory Preset and *RST: RMS
Remarks: To use this command, the appropriate mode should be selected with INSTrument:SELect.
Waveform—Resolution BW
[:SENSe]:WAVeform:BANDwidth|BWIDth[:RESolution] <freq>
[:SENSe]:WAVeform:BANDwidth|BWIDth[:RESolution]?
Set the resolution bandwidth. This value is ignored if the function is auto-coupled.
Factory Preset and *RST: 100 kHz, for NADC, PDC, cdma2000, W-CDMA, basic, service mode
500 kHz, for GSM mode
2 MHz. for cdmaOne
Range:
Remarks:
1 kHz to 5 MHz
To use this command, the appropriate mode should be selected with INSTrument:SELect.
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Waveform—Resolution BW Filter Type
[:SENSe]:WAVeform:BANDwidth|BWIDth[:RESolution]:TYPE
FLATtop|GAUSsian
[:SENSe]:WAVeform:BANDwidth|BWIDth[:RESolution]:TYPE?
Select the type of Resolution BW filter that is used. This is an Advanced control that normally does not need to be changed.
Flat top - a filter with a flat amplitude response, which provides the best amplitude accuracy.
Gaussian - a filter with Gaussian characteristics, which provides the best pulse response.
Factory Preset and *RST: Gaussian
Remarks: To use this command, the appropriate mode should be selected with INSTrument:SELect.
Decimation of Waveform Display
[:SENSe]:WAVeform:DECimate[:FACTor] <integer>
[:SENSe]:WAVeform:DECimate[:FACTor]?
Set the amount of data decimation done by the hardware and/or the firmware in order to decrease the number of acquired points in a long capture time. This is the amount of data that the measurement ignores.
For example, if 4 is selected, three out of every four data points will be thrown away. So every 4th data point will be kept.
Factory Preset and *RST: 1
Range:
Remarks:
1 to 4
To use this command, the appropriate mode should be selected with INSTrument:SELect.
Control Decimation of Waveform Display
[:SENSe]:WAVeform:DECimate:STATe OFF|ON|0|1
[:SENSe]:WAVeform:DECimate:STATe?
Set the decimation function on or off.
Factory Preset and *RST: Off
Remarks: To use this command, the appropriate mode should be selected with INSTrument:SELect.
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Waveform—Sweep (Acquisition) Time
[:SENSe]:WAVeform:SWEep:TIME <time>
[:SENSe]:WAVeform:SWEep:TIME?
Set the measurement acquisition time. It is used to specify the length of the time capture record.
Factory Preset and *RST: 2.0 ms
10.0 ms, for NADC, PDC
Range:
15.0 ms, for iDEN mode
1
µs to 100 s
Default Unit: seconds
Remarks: To use this command, the appropriate mode should be selected with INSTrument:SELect.
Waveform—Trigger Source
[:SENSe]:WAVeform:TRIGger:SOURce EXTernal[1]|
EXTernal2|FRAMe|IF|IMMediate|LINE|RFBurst
[:SENSe]:WAVeform:TRIGger:SOURce?
Select the trigger source used to control the data acquisitions.
External 1 - front panel external trigger input
External 2 - rear panel external trigger input
Frame - internal frame timer from front panel input
IF - internal IF envelope (video) trigger
Immediate - the next data acquisition is immediately taken (also called free run)
Line - internal line trigger
RF Burst - internal wideband RF burst envelope trigger that has automatic level control for periodic burst signals
Factory Preset and *RST: Immediate (free run), for Basic, cdmaOne, NADC, PDC mode
Remarks:
RF burst, for GSM, iDEN mode
To use this command, the appropriate mode should be selected with INSTrument:SELect.
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Bit Error Rate Measurement
Commands for querying the bit error rate measurement results and for
setting to the default values are found in the “MEASure Group of
Commands” on page 146 . The equivalent front panel keys for the
parameters described in the following commands, are found under the
Meas Setup
key, after the
BER
measurement has been selected from the
MEASURE
key menu.
Bit Error Rate—Averaging Termination Control
[:SENSe]:BER:AVERage:TCONtrol EXPonential|REPeat
[:SENSe]:BER:AVERage:TCONtrol?
Select the type of termination control used to averaging. This determines the averaging action after the specified number of data acquisitions (average count) is reached.
EXPonential – Each successive data acquisition after the average count is reached, is exponentially weighted and combined with the existing average.
REPeat – After reaching the average count, the averaging is reset and a new average is started.
Factory Preset: EXPonential
Remarks: You must be in the cdma2000, W-CDMA mode to use this command. Use INSTrument:SELect to set the mode.
Bit Error Rate—Resolution BW
[:SENSe]:BER:BANDwidth|BWIDth[:RESolution] <freq>
[:SENSe]:BER:BANDwidth|BWIDth[:RESolution]?
Set the demodulation resolution bandwidth. This value is ignored if the function is auto-coupled.
Factory Preset and *RST: 19.53125 kHz
Factory Preset and *RST: 19.53125 kHz for iDEN
Remarks:
95.0 kHz for WiDEN
You must be in the iDEN or WiDEN mode to use this command. Use INSTrument:SELect to set the mode.
Front Panel
Access:
Meas Setup
,
Advanced
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Bit Error Rate—Frame Count
[:SENSe]:BER:FRAMes <integer>
[:SENSe]:BER:FRAMes?
Indicates the number of frames to be used by each test to calculate the bit error rate.
Factory Preset and *RST: 16
Range:
Remarks:
History:
1 to 1024 frames
You must be in the iDEN mode to use this command.
Use INSTrument:SELect to set the mode.
Version A.03.00 or later
Bit Error Rate—Slot Count
[:SENSe]:BER:SLOTs <integer>
[:SENSe]:BER:SLOTs?
Indicates the number of slots to be used by each test to calculate the bit error rate.
Factory Preset and *RST: 16
Range:
Remarks:
History:
1 to 1024 frames
You must be in the WiDEN mode to use this command.
Use INSTrument:SELect to set the mode.
Version A.07.05 or later
Bit Error Rate—PvT Test
[:SENSe]:BER:PVTTest OFF|ON|0|1
[:SENSe]:BER:PVTTest?
Sets the PvT test to on or off. When this is set to On, the RF power envelope is checked against the PvT mask.
Factory Preset and *RST: 0 (Off)
Range:
Remarks:
History:
0 or 1 (On or Off)
You must be in the iDEN, WiDEN mode to use this command. Use INSTrument:SELect to set the mode.
Version A.03.00 or later
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Bit Error Rate—Trigger Source
[:SENSe]:BER:TRIGger:SOURce EXTernal[1]|EXTernal2
|FRAMe|IF|IMMediate|RFBurst
[:SENSe]:BER:TRIGger:SOURce?
Select the trigger source used to control the data acquisitions.
EXTernal 1 – front panel external trigger input
EXTernal 2 – rear panel external trigger input
IF – internal IF envelope (video) trigger
IMMediate – the next data acquisition is immediately taken, capturing the signal asynchronously (also called free run)
FRAMe – internal frame trigger from front panel input
RFBurst – wideband RF burst envelope trigger that has automatic level control for periodic burst signals
Factory Preset: IF for outbound
RFBurst for outbound
Remarks: You must be in the iDEN, WiDEN mode to use this command. Use INSTrument:SELect to set the mode.
Bit Error Rate—Mask Configuration
The following Power vs. Time measurement commands are also applicable to and effective for the PvT test in BER:
[:SENSe]:PVTime:MASK:LIST:LOWer:ABSolute <power>, <power>,
<power>, <power>, <power> on page 203
[:SENSe]:PVTime:MASK:LIST:LOWer:RELative <rel_power>,
<rel_power>, <rel_power>, <rel_power>,<rel_power> on page 204
[:SENSe]:PVTime:MASK:LIST:LOWer:TIME <seconds>, <seconds>,
<seconds>, <seconds>, <seconds> on page 204
[:SENSe]:PVTime:MASK:LIST:UPPer:ABSolute <power>, <power>,
<power>, <power>, <power> on page 205
[:SENSe]:PVTime:MASK:LIST:UPPer:RELative <rel_power>,
<rel_power>, <rel_power>, <rel_power>,<rel_power> on page 206
[:SENSe]:PVTime:MASK:LIST:UPPer:TIME <seconds>, <seconds>,
<seconds>, <seconds>, <seconds> on page 208
[:SENSe]:PVTime:MASK:SELect STANdard|CUSTom on page 209
For additional information on the use and parameters for these commands, refer to the command under the Power Vs. Time measurement on the pages indicated for each command.
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Remarks: You must be in the WiDEN mode to use these commands. Use INSTrument:SELect to set the mode.
242 Chapter 5
Index
Numerics
12 bit Digital IF key waveform measurement
,
14 bit Digital IF key waveform measurement
,
A
Abs Limit key
ACPR measurement
,
Absolute key
ACPR measurement
,
ACP limit testing
,
offset frequencies
,
setting amplitude levels
,
testing
trigger source
ACPR amplitude levels
,
offset frequencies
,
resolution bandwidths
,
testing choices
ACPR key
active license key
how to locate
ADC Dither key spectrum measurement
,
waveform measurement
,
ADC dithering
SPECtrum
ADC filter
WAVeform
,
ADC range
SPECtrum
WAVeform
,
ADC Range key spectrum measurement
,
waveform measurement
,
adjacent channel power measuring
adjacent channel power measurement
,
adjacent channel power ratio measurement
,
Advanced key
MT Avg Pwr measurement
MT Trans EVM measurement
,
PVT measurement
,
waveform measurement
,
Advanced menu spectrum
amplitude input range
maximizing input signal
AND key
ACPR measurement
applications currently available
,
applications, selecting
ASCII data format
attenuation setting
,
Auto key waveform measurement
Auto Peak key waveform measurement
AutoPeakLock key waveform measurement
averaging
ACP
,
ACPR
,
BER
,
CHPower
MotoTalk average power measurement
,
OBW
,
power vs. time
SPECtrum
,
WAVeform
averaging state
MotoTalk average power measurement
,
Avg Bursts key
MT Avg Pwr measurement
,
B
Band Power key waveform measurement
band power measurement
,
bandpower marker
,
bandwidth
ACPR
,
BER
,
MotoTalk average power measurement
,
MotoTalk transient error vector magnitude measurement
,
MT trans EVM measurement
,
power vs. time
PVTime
SPECtrum
,
WAVeform
bandwidth filter type
MotoTalk average power measurement
,
MotoTalk transient error vector magnitude measurement
,
base station loss correction
base station testing
,
BER averaging
,
frames
,
limit testing
,
PvT mask configuration
,
trigger source
BER key
binary data order
,
bit error rate measuring
bit error rate limits
BER
bit error rate measurement
burst carriers
Burst ID Method key
MT Avg Pwr measurement
Burst key
MT Avg Pwr measurement
burst sync delay
burst synchronization
byte order of data
,
C
Carr Est Time key
PVT measurement
,
carrier type
,
carrier selection
CDMA measurement
,
cdma2000
ACP measurement
,
averaging
,
trigger source
cdma2000 measurement
cdmaOne
ACP measurement
,
cdmaOne measurement
,
Center screen notation
,
Centroid Freq screen notation
,
changing instrument settings
,
Choose Option key
continuous carriers
continuous vs. single measurement mode
,
control measurement commands
,
correction base station loss
243
Index
mobile station loss
curve fit the data
,
custom masks
PVT measurement
D
data querying
,
data decimation
WAVeform
data format
,
data from measurements
,
Data Packing spectrum measurement
Data Packing key waveform measurement
Decimation spectrum measurement
decimation
SPECtrum
,
decimation factor
MotoTalk average power measurement
,
MotoTalk transient error vector magnitude measurement
,
Decimation key
MT Avg Pwr measurement
,
MT Trans EVM measurement
,
waveform measurement
decimation of data
WAVeform
decimation state
MotoTalk average power measurement
,
MotoTalk transient error vector magnitude measurement
,
default states
default values for measurements
,
delay, burst sync
deleting an application/personality
,
Delta Freq screen notation
Delta key
MT Avg Pwr measurement
,
MT Trans EVM measurement
,
spectrum measurement
waveform measurement
delta markers
,
display on/off
,
spectrum window
trace
zoom
,
display commands
,
display PVT data
dithering the ADC
F
Fail key
ACPR measurement
,
FFT
SPECtrum
FFT bandwidth, SPECtrum
,
FFT Length key
,
FFT Size menu
FFT Window key.
,
format, data
,
format, setting spread rate
,
frames
BER
Frames key
BER measurement
,
frequencies offset
ACP
frequency carrier setting
frequency band limits
OBW
frequency hopping repetition factor
MotoTalk transient error vector magnitude measurement
,
frequency span
SPECtrum
Function Off key
MT Avg Pwr measurement
MT Trans EVM measurement
,
spectrum measurement waveform measurement
,
,
G
gate time
MotoTalk average power
Gated & Burst key
MT Avg Pwr measurement
,
Gated key
MT Avg Pwr measurement
,
Gated Time key
MT Avg Pwr measurement
GSM measurement
,
H
Hop Freq Ofst key
MT Trans EVM measurement
,
I
I/Q waveform window
waveform view
iDEN
ACP measurement
gate time
limit testing
measurement method
,
sweep time
trigger source
,
iDEN measurement
,
iDEN offset frequencies
iDEN trigger source
,
IF Align Signal menu
Signal Amptd key
Signal Rate key
Signal Type key
,
IF Flatness advanced spectrum feature
,
initiate measurement
input attenuation
,
input power maximum
,
range
Install Now key
,
Installing and Obtaining a license key
,
installing measurement personalities
,
instrument configuration
K
key
12 bit Digital IF - waveform measurement
,
14 bit Digital IF - waveform measurement
,
Abs Limit - ACPR measurement
,
Absolute - ACPR measurement
,
ACPR
,
ADC Dither - waveform measurement
,
ADC Range - waveform measurement
,
Advanced - MT Avg Pwr measurement
,
244
Index
Advanced - MT Trans EVM measurement
Advanced - PVT measurement
,
Advanced - waveform
Measurement
,
AND - ACPR measurement
,
Auto - waveform measurement
,
Auto Peak - waveform measurement
AutoPeakLock - waveform measurement
Avg Bursts- MT Avg Pwr measurement
Band Power
,
Band Power - waveform
Measurement
,
Band Power- MT Trans EVM measurement
BER
Burst - MT Avg Pwr measurement
Burst ID Method - MT Avg Pwr measurement
Carr Est Time - PVT measurement
Data Packing - waveform measurement
Decimation - MT Avg Pwr measurement
Decimation - MT Trans EVM measurement
Decimation - waveform measurement
Delta - MT Avg Pwr measurement
Delta - MT Trans EVM measurement
Delta - spectrum measurement
,
Delta - waveform Measurement
,
Fail - ACPR measurement
,
Frames - BER measurement
Function Off - MT Avg Pwr measurement
Function Off - MT Trans EVM measurement
Function Off - spectrum measurement
Function Off - waveform
Measurement
,
Gated - MT Avg Pwr measurement
Gated & Burst - MT Avg Pwr measurement
Gated Time - MT Avg Pwr measurement
,
Hop Freq Ofst - MT Trans EVM measurement
,
Limit - OBW measurement
,
Limit Test - ACPR measurement
,
Limit Test - OBW measurement
,
Long (32 bit) - waveform measurement
,
Manual - waveform measurement
,
Marker - MT Avg Pwr measurement
,
Marker - MT Trans EVM measurement
,
Marker - spectrum measurement
,
Marker - waveform
Measurement
Marker All Off - MT Avg Pwr measurement
,
Marker All Off - MT Trans EVM measurement
,
Marker All Off - spectrum measurement
,
Marker All Off - waveform
Measurement
Meas Method - MT Avg Pwr measurement
,
Meas Time - MT Trans EVM measurement
,
Medium (24 bit) - waveform measurement
,
MT Avg Pwr
MT Trans EVM
,
Normal - MT Avg Pwr measurement
,
Normal - MT Trans EVM measurement
,
Normal - spectrum measurement
,
Normal - waveform
Measurement
Occupied BW
Off - MT Avg Pwr measurement
,
Off - MT Trans EVM measurement
,
Off - spectrum measurement
Off - waveform Measurement
,
Offs & Limits - ACPR measurement
,
Offset BW - ACPR measurement
,
Offset Freq - ACPR measurement
OR - ACPR measurement
,
Pre-ADC BPF - waveform measurement
PVT
RBW Filter - MT Avg Pwr measurement
RBW Filter - MT Trans EVM measurement
RBW Filter - PVT measurement
RBW Filter - waveform measurement
Rel Lim (Car) - ACPR measurement
Rel Lim (PSD) - ACPR measurement
Relative - ACPR measurement
,
Res BW - ACPR measurement
,
Res BW - MT Avg Pwr measurement
Res BW - MT Trans EVM measurement
Res BW - PVT measurement
Res BW - waveform measurement
RF Amptd - MT Avg Pwr measurement
Search - waveform
Measurement
,
Select 1 2 3 4 - MT Avg Pwr measurement
Select 1 2 3 4 - MT Trans EVM measurement
Select 1 2 3 4 - spectrum measurement
Select 1 2 3 4 - waveform
Measurement
,
Shape Diamond - MT Avg Pwr measurement
Shape Diamond - MT Trans
EVM measurement
Shape Diamond - spectrum measurement
Shape Diamond - waveform
Measurement
,
Short (16 bit) - waveform measurement
Spectrum (Frequency Domain)
,
Sweep Time - waveform measurement
Sync Word - MT Avg Pwr measurement
245
Index
Trace Spectrum - MT Avg Pwr measurement
,
Trace Spectrum - MT Trans
EVM measurement
,
Trace Spectrum - spectrum measurement
,
Trace Spectrum - waveform
Measurement
Trace/View - waveform
Measurement
Waveform (Time Domain)
,
L
Length Ctrl key
Length key
license key obtaining and installing
Limit key
OBW measurement
Limit Test key
ACPR measurement
OBW measurement
limit testing
,
ACP
,
BER
,
NADC
OBW
,
PDC
,
loading an application/personality
,
Long (32 bit) key waveform measurement
M
Manual key waveform measurement
Marker All Off key
MT Avg Pwr measurement
,
MT Trans EVM measurement
,
spectrum measurement
waveform measurement
Marker key
MT Avg Pwr measurement
,
MT Trans EVM measurement
,
spectrum measurement
waveform measurement
markers
assigning them to traces
bandpower
maximum
,
minimum
noise
,
off
trace assignment
,
turn off
,
type
,
valid measurement
value
,
value of
,
x-axis location
,
y-axis
,
masks power vs. time
,
,
maximum value of trace data
Mean Transmit Pwr, PvT measurement
,
mean value of trace data
,
Meas Method key
MT Avg Pwr measurement
Meas Time key
MT Trans EVM measurement
,
measurement adjacent channel power
adjacent channel power ratio
,
bit error rate
markers
MotoTalk average power
MotoTalk power average
MotoTalk transient error vector magnitude measurement
,
MotoTalk transient EVM
,
occupied bandwidth
occupied BW
power vs time
,
power vs. time
,
spectrum (frequency domain)
,
waveform (time domain)
,
measurement method
MotoTalk average power measurement
measurement modes currently available
selecting
,
measurements adjacent channel power ratio
,
bit error rate
configuration
control of
getting results
,
MotoTalk average power
MotoTalk transient error vector magnitude
,
MT avg pwr
MT trans EVM
,
occupied BW
power vs. time
single/continuous
spectrum (frequency domain)
,
waveform (time domain)
,
Medium (24 bit) key waveform measurement
Min Pts in RBW key
,
minimum value of trace data
,
missing options
mobile station loss correction
,
mobile station testing
,
MotoTalk average power burst synchronization
measurement method
,
MotoTalk average power measurement
averaging state
bandwidth filter type
,
decimation factor
,
decimation state
,
number of bursts averaged
,
resolution bandwidth
,
trigger source
,
MotoTalk average power measurement sweep time
MotoTalk average power measurement gate time
,
MotoTalk power average measuring
,
MotoTalk transient error vector magnitude measurement
,
bandwidth filter type
,
decimation factor
,
decimation state
,
frequency hopping repetition factor
,
repetition factor - frequency hopping
resolution bandwidth
,
trigger source
,
MotoTalk transient EVM measuring
,
MT Avg Pwr key
,
MT avg pwr measurement
,
MT Trans EVM key
MT trans EVM measurement
,
resolution bandwidth
,
N
NADC
246
Index
burst power threshold
,
offset frequencies
,
trigger source
NADC measurement
,
noise marker
,
Normal key
MT Avg Pwr measurement
MT Trans EVM measurement
,
spectrum measurement
,
waveform measurement
,
normal marker
O
OBW limit testing
,
percent power
trigger source
OBW averaging
,
occupied bandwidth measuring
Occupied BW key
occupied BW measurement
,
,
Off key
MT Avg Pwr measurement
MT Trans EVM measurement
,
spectrum measurement
,
waveform measurement
,
Offs & Limits key
ACPR measurement
,
Offset BW key
ACPR measurement
,
Offset Freq key
ACPR measurement
,
offset frequencies
ACP
options loading/deleting
options not in instrument memory
,
OR key
ACPR measurement
,
P
packing
SPECtrum
pass/fail test
,
PDC burst power threshold
,
offset frequencies
,
trigger source
PDC measurement
percent power, OBW
,
personalities currently available
,
selecting
personality options not in instrument
,
power
% occupied power bandwidth
,
power vs time measuring
,
power vs. time - averaging type
,
power vs. time - custom limit masks
power vs. time - lower mask absolute amplitude levels
,
power vs. time - lower mask points
,
power vs. time - lower mask relative amplitude levels
,
power vs. time - lower mask time points
,
power vs. time - number of bursts averaged
power vs. time - resolution bandwidth
power vs. time - trigger source
,
power vs. time - upper mask absolute amplitude levels
,
power vs. time - upper mask points
,
power vs. time - upper mask relative amplitude levels
,
power vs. time - upper mask time points
,
power vs. time measurement
,
pre-ADC bandpass filter
SPECtrum
,
Pre-ADC BPF key spectrum measurement
waveform measurement
pre-FFT bandwidth, SPECtrum
,
Pre-FFT BW key
,
Pre-FFT Fltr key
preset states
,
PVT view of data
,
PVT key
,
PvT mask configuration
BER
,
PvT measurement, Mean
Transmit Pwr
,
PvT measurement, SGC correction factor
,
PVTime bandwidth
,
Q
query data
,
R
radio format setting
RBW Filter key
MT Avg Pwr measurement
MT Trans EVM measurement
,
PVT measurement
,
waveform measurement
,
real number data format
,
Rel Lim (Car) key
ACPR measurement
,
Rel Lim (PSD) key
ACPR measurement
,
Relative key
ACPR measurement
,
repetition factor frequency hopping, MotoTalk transient error vector magnitude measurement
,
Res BW key
ACPR measurement
,
MT Avg Pwr measurement
MT Trans EVM measurement
,
PVT measurement
,
spectrum measurement
,
waveform measurement
,
restart measurement
,
results from measurements
return data
,
RF Amptd key
MT Avg Pwr measurement
RF Envelope key
RMS of trace data
S
sampling trace data
,
screen notation center
,
centroid freq
delta freq
,
Search key waveform measurement
,
Select 1 2 3 4 key
MT Avg Pwr measurement
247
Index
MT Trans EVM measurement
,
spectrum measurement
waveform measurement
setting default values
SGC Corr, PvT measurement
,
Shape Diamond key
MT Avg Pwr measurement
,
MT Trans EVM measurement
,
spectrum measurement
waveform measurement
Short (16 bit) key waveform measurement
single vs. continuous measurement mode
span
SPECtrum
,
Span key spectrum measurement
SPECtrum acquisition packing
,
ADC range
,
data decimation
,
FFT length
FFT resolution BW
,
FFT window
frequency span
trigger source
,
spectrum (frequency domain) measuring
,
Spectrum (Frequency Domain) key
spectrum (frequency domain) measurement
spectrum measurement display
,
spectrum window
,
spread rate setting
standard deviation of trace data
,
start measurement
,
state changing
sweep time
MotoTalk average power measurement
,
WAVeform
Sweep Time key waveform measurement
Sync Word key
MT Avg Pwr measurement
,
synchronization burst sync delay
MotoTalk average power
,
NADC
PDC
T
test limit
BER
OBW
test limits
,
NADC
,
PDC
time domain measurement
total, bit error rate
trace data processing
trace display
,
trace format
,
trace names for markers
,
Trace Spectrum key
MT Avg Pwr measurement
MT Trans EVM measurement
,
spectrum measurement waveform measurement
,
,
Trace/View key waveform measurement
,
trigger power vs. time
,
SPECtrum
WAVeform
,
trigger measurement
,
trigger source
ACP
BER
MotoTalk average power measurement
MotoTalk transient error vector magnitude measurement
,
OBW
U
Uninstall Now
,
uninstalling measurement personalities
V
view commands
view PVT data
,
W
WAVeform
ADC filter
,
ADC range
data decimation
sweep time
,
trigger source
waveform (time domain) measuring
,
Waveform (Time Domain) key
,
waveform (time domain) measurement
W-CDMA
ACP measurement
averaging
trigger source
,
W-CDMA (3GPP) measurement
,
W-CDMA measurement
window
I/Q waveform
spectrum
,
Window Length key
word, bit error rate
,
Z
zero span measurement
,
zoom the display
,
248
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