Anritsu MU368060A Portable Generator User Manual

MU368060A
AWGN Unit
Operation Manual
Fourth Edition
• Read this manual before using the equipment.
• To ensure that the equipment is used safely, read
the "For Safety" in the MG3681A Digital Modulation Signal Generator Operation Manual first.
• Keep this manual with the equipment.
ANRITSU CORPORATION
Document No.: M-W1955AE-4.0
MU368060A
AWGN Unit
Operation Manual
1
1
August
2001 (First Edition)
December 2003 (Fourth Edition)
Copyright © 2001-2003, ANRITSU CORPORATION.
All rights reserved. No part of this manual may be reproduced without the prior written permission of the
publisher.
The contents of this manual may be changed without prior notice.
Printed in Japan
ii
Equipment Certificate
Anritsu Corporation certifies that this equipment was tested before
shipment using calibrated measuring instruments with direct traceability
to public testing organizations recognized by national research laboratories including the National Institute of Advanced Industrial Science and
Technology, and the Communications Research Laboratory, and was
found to meet the published specifications.
Anritsu Warranty
Anritsu Corporation will repair this equipment free-of-charge if a malfunction occurs within 1 year after shipment due to a manufacturing fault,
provided that this warranty is rendered void under any or all of the following conditions.
• The fault is outside the scope of the warranty conditions described in
the operation manual.
• The fault is due to mishandling, misuse, or unauthorized modification
or repair of the equipment by the customer.
• The fault is due to severe usage clearly exceeding normal usage.
• The fault is due to improper or insufficient maintenance by the customer.
• The fault is due to natural disaster including fire, flooding, earthquake,
etc.
• The fault is due to use of non-specified peripheral equipment,
peripheral parts, consumables, etc.
• The fault is due to use of a non-specified power supply or in a nonspecified installation location.
In addition, this warranty is valid only for the original equipment purchaser. It is not transferable if the equipment is resold.
Anritsu Corporation will not accept liability for equipment faults due to
unforeseen and unusual circumstances, nor for faults due to mishandling
by the customer.
Anritsu Corporation Contact
If this equipment develops a fault, contact Anritsu Service and Sales offices at the address at the end of paper-edition manual or the separate file
of CD-edition manual.
iii
Notes On Export Management
This product and its manuals may require an Export License/Approval by
the Government of the product's country of origin for re-export from your
country.
Before re-exporting the product or manuals, please contact us to confirm
whether they are export-controlled items or not.
When you dispose of export-controlled items, the products/manuals are
needed to be broken/shredded so as not to be unlawfully used for military
purpose.
Disposing of Product
This equipment uses chemical compound semiconductors including
arsenide. At the end of its life, the equipment should be recycled or
disposed properly according to the local disposal regulations.
Trademark and Registered Trademark
MS, Microsoft, MS-DOS and Windows are the registered trademark of
Microsoft Corporation in the United States and/or other countries.
IBM and AT are the registered trademark of International Business Machines Corporation.
NI-488.2TM is a registered trademark of National Instruments Corporation.
iv
CE Conformity marking
Anritsu affixes the CE Conformity marking on the following product (s) in
accordance with the Council Directive 93/68/EEC to indicate that they
conform with the EMC and LVD directive of the European Union (EU).
CE marking
1. Product Model
Plug-in Units:
MU368060A AWGN Unit
2. Applied Directive and Standards
When the MU368060A AWGN Unit is installed in the MG3681A, the
applied directive and standards of this Unit are conformed to those of
the MG3681A main frame.
PS: About main frame
The kind of main frame (a measuring apparatus) will be to increase.
Please, contact us about the newest information of the main frame.
v
C-tick Conformity marking
Anritsu affixes the C-tick marking on the following product (s) in accordance with the regulation to indicate that they conform with the EMC
framework of Australia/New Zealand.
C-tick marking
1. Product Model
Plug-in Units:
MU368060A AWGN Unit
2. Applied Directive and Standards
When the MU368060A AWGN Unit is installed in the MG3681A, the
applied directive and standards of this Unit are conformed to those of
the MG3681A main frame.
PS: About main frame
The kind of main frame (a measuring apparatus) will be to increase.
Please, contact us about the newest information of the main frame.
vi
About This Manual
This operation manual offers an overview, sample measurement and remote control of the MU368060A AWGN Unit.
The MU368060A AWGN Unit is mounted to the MG3681A Digital Modulation Signal Generator.
represents a panel key.
The "MG3681A Digital Modulation Signal Generator Operation Manual"
is provided separately. Refer to them together with this manual.
I
Table of Contents
About This Manual........................................
Section 1
1.1
1.2
Overview ....................................
1-1
Product Outline.............................................................
Product Configuration...................................................
1-2
1-3
Section 2
2.1
2.2
Storage and Transportation.....
2-1
Precautions for Long-term Storage ..............................
Repacking and Transportation .....................................
2-2
2-3
Section 3
3.1
3.2
Operation Overview ..................
3-1
Setting the Parameters.................................................
Power Accuracy for the Calculated Bandwidth ............
3-2
3-6
Section 4
4.1
Sample Measurement ...............
4-1
Evaluation Measurement for the Receiver ...................
4-2
Section 5
5.1
Sample Calibration ...................
5-1
Calibration of the Output Level.....................................
5-2
Section 6
6.1
6.2
6.3
6.4
6.5
II
I
AWGN Internal Adder
Function.....................................
6-1
Product Outline.............................................................
Operation when Selecting W-CDMA ............................
Function Details............................................................
Operation when Selecting 1xEVDO .............................
Function Details when Selecting 1xEVDO ...................
6-2
6-3
6-6
6-8
6-10
Section 7
7.1
7.2
7.3
7.4
7.5
7-6
Remote Controls .......................
7-1
Device Message List by Function.................................
Alphabetical Device Message List................................
Device Message List for each AWGN Internal Adder
Functions when Selecting W-CDMA ............................
Alphabetical Device Message List for AWGN
Internal Adder Function when Selecting W-CDMA ......
Device Message List for AWGN Internal Adder
Functions When Selecting 1xEVDO.............................
Alphabetical Device Message List for AWGN
Internal Adder Function When Selecting 1xEVDO.......
7-2
7-5
Section 8
8.1
8.2
8.3
8.4
7-12
7-13
7-17
7-18
Performance Test......................
8-1
Performance Test .........................................................
Devices used in Performance Test ..............................
RF Output Level Accuracy............................................
In-band Power Calculation Accuracy ...........................
8-2
8-3
8-4
8-5
Appendix....................................................
Appendix A
Appendix B
Appendix C
Specifications...................................................
Initial Value List................................................
Performance Test Result Sheet ......................
App-1
A-1
B-1
B-1
Index........................................................... Index-1
III
IV.
Section 1 Overview
This section describes the product outline and manual configuration for
the MU368060A AWGN Unit.
1.1
1.2
Product Outline........................................................... 1-2
Product Configuration ................................................ 1-3
1-1
Section 1 Overview
1.1 Product Outline
The MU368060A is an AWGN (Additive White Gaussian Noise) Unit
mounted on the MG3681A Digital Modulation Signal Generator (hereafter,
main frame).
Mounting the MU368060A on the main frame enables noise signals to be
generated for reception sensitivity test of CDMA 2000 modulation radio
equipment.
1-2
1.2
Product Configuration
1.2 Product Configuration
The standard configuration of the MU368060A is shown below. When
unpacking, check that the listed products are provided. If a missing or
damaged component is found, please contact Anritsu or its distributors.
Item
Main Unit
Accessory
Model name and
number
MU368060A
W1955AE
Part name
AWGN Unit
Operation Manual
QuanRemarks
tity
1
1
1-3
Section 1 Overview
1-4.
Section 2 Storage and Transportation
This section describes precautions on storage and transportation of
MU368060A.
2.1
2.2
Precautions for Long-term Storage ............................ 2-2
Repacking and Transportation ................................... 2-3
2-1
Section 2 Storage and Transportation
2.1 Precautions for Long-term Storage
Avoid storing the MU368060A in places where:
•
•
•
•
•
•
It may be exposed to direct sunlight
It is dusty
It is humid and condensation may form
It may be exposed to active gases
It may oxidize
The following temperature and humidity exists
Temperature : < –20°C, > 60°C
Humidity
: ≥ 90%
Recommended Storage Conditions
When MU368060A is stored for long periods, we recommend observing the
following conditions in addition to those described above:
• Temperature : 0 to 50°C
: 40 to 80%
• Humidity
• A location where the temperature and humidity are stable throughout
the day.
2-2
2.2
Repacking and Transportation
2.2 Repacking and Transportation
Precautions on transportation of MU368060A are shown below.
Repacking
Use the original packing material (box), if available. If not available,
follow the procedures shown below to repack the MU368060A.
[1] Cover the MU368060A with a conductive vinyl.
[2] Prepare a cardboard/wood/aluminum box large enough to store the
MU368060A and the cushioning material to cover it.
[3] Put the MU368060A into the box. Then put cushioning material
around it to prevent it from moving in the box.
[4] Firmly close the box with packing string, adhesive tape or bands.
Transportation
During transportation, avoid vibration where possible and maintain the
"Recommended Storage Conditions" above.
2-3
Section 2 Storage and Transportation
2-4.
Section 3 Operation Overview
This section explains the basic screens when MU368060A is mounted on
the main frame.
3.1
3.2
Setting the Parameters .............................................. 3-2
Power Accuracy for the Calculated Bandwidth .......... 3-6
3-1
Section 3 Operation Overview
3.1 Setting the Parameters
When
pears.
is pressed, the key lamp lights and the Main screen apThis screen is for basic parameter settings on digital modulation.
Digital Mod
Details on the Main screen settings are described below.
[1] I/Q Mod.
When Digital Modulation is set to “On”, this unit outputs noise.
When set to “Off”, it outputs CW signal.
Setting item
: Int, Ext, Off
[2] System
Sets the communication system.
Setting item
: NOISE1
[3] Noise
Sets the bandwidth for the noise to be generated.
Setting range
: 1.5 to 16 MHz, resolution: 1 kHz
[4] Calculated
Sets the calculated bandwidth.
Setting range
: 10 to 80% of the inputted setting value for the
noise bandwidth
Resolution
: 1 kHz
3-2
3.1
Setting the Parameters
[5] Calculated Level
Calculates the calculated level internally based on the inputted calculated bandwidth. Displays the power ratio of the band specified
in [4] to the total power for the RF output of the signal generator.
[6] (Absolute)
Displays the power in the calculated bandwidth.
Displayed value = RF output level + Calculated Level
3-3
Section 3 Operation Overview
• Calculating the power for the calculated bandwidth
The noise generator can be explained by the following three parameters.
Noise Bandwidth:
Sets the band for the noise to be generated.
Bandwidth set here is for the flat part of the noise as shown in the
figure below.
Calculated Bandwidth:
Normally, same as the channel bandwidth for the communication
system to be measured.
Calculated Level:
Displays the power ratio of the calculated bandwidth (
the total power of the spectrum in the figure below.
part) to
Carrier frequency
Setting value for the
calculated bandwidth
Setting value for the noise
bandwidth
Ideal spectrum for the noise signal
The power within the calculated bandwidth is therefore figured out with
the following formula:
The power within the calculated bandwidth = RF output level (total
power) + Calculated level
… (1)
3-4
3.1
Setting the Parameters
Example:
Suppose that the following parameters are set for this unit:
Output Level
Digital Mod
System
Noise Bandwidth
Calculated Bandwidth
: −10 dBm
: On
: Noise1
: 7.68 MHz
: 3.84 MHz
From Formula (1),
Power within the calculated bandwidth
= RF output level + Calculated level
= −10 dBm + (−3.45 dB)
= −13.45 dBm
Therefore, the power within the calculated
bandwidth for the RF output is –13.45 dBm.
The power –13.45 dBm is displayed at “(Absolute)”.
3-5
Section 3 Operation Overview
3.2 Power Accuracy for the Calculated Bandwidth
From Formula (1) in Section 3.1, accuracy for the power within the calculated bandwidth varies depending on the accuracy for the RF output level
and the power calculation level. When the user does not perform calibration, accuracy is the added value of these two error elements.
Accuracy of the power within the calculated bandwidth
= RF output level error + Calculated level error .................(2)
= (Level accuracy at CW ± 3.0 dB) + (± 0.6 dB or ± 2.0 dB)* ....(3)
*: ±0.6 dB when the setting value for noise bandwidth
is ≤8 MHz.
±2.0 dB when the setting value for noise bandwidth
is >8 MHz.
• RF output level accuracy
The standard for the RF output level accuracy is ±3 dB level accuracy at
CW. However, it is relatively easy to calibrate it by using the power
meter. When calibrated, the error for the RF output level can be
reduced to the measurement accuracy of the power meter.
• Calculated level accuracy
The calculated level displayed is figured out under ideal conditions and
with the frequency characteristic for the analogue circuit flat. On the
other hand, the actual RF output signal may not be flat according to the
frequency characteristic for the analogue circuit. The distortion of
frequency characteristic results in an error in the calculated level.
Carrier frequency
Level range
Setting value for the
calculated bandwidth
Setting value for the noise bandwidth
Spectrum for MU368060A
3-6.
Section 4 Sample Measurement
This section explains sample measurement when MU368060A is mounted
on the main frame.
4.1
Evaluation Measurement for the Receiver ................. 4-2
4-1
Section 4 Sample Measurement
4.1 Evaluation Measurement for the Receiver
The evaluation measurement procedure for the W-CDMA receiver is described below.
Setup
Wanted signal source
MG3681A + MU368040A + MX368041A/B
Function
MG3681A
Digital Modulation
Signal Generator
250kHz -3GHz
3-6GHz (Option)
Freq
Level
3 000.000 000 00 MHz
-123.15 dBm
Preset
Modulation Mode : I,Q
Contrast
Source
Burst : [On]
Pattern : [UP TCH
Trigger : [Int]
Panel Lock
F1
Frequency
Offset
On Off
F2
Level
Relative
On Off
F3
Digital Mod
Slot 1
Current
Frequency
F4
Analog Mod
Invrement
Step Value
F5
Memory
Resolution
Slot 2
Knob Hold
CE
BS
Shift
Modulation
D
E
F
dB
7
8
9
GHz/dBm
A
B
C
%
4
5
6
MHz/mW
Digital
s /dBµV
Analog
ms / V
Save
△
Local
F6
△
1
Config
2
3
RF Output
kHz/nW
rad / mV
RPP Reset
Off >○< On●
Recall
Symbol Clk
0
IQ Input
-/+
・
Hz / fW
deg / µV
Data
Clock
1
2
3
4
5
I / Wide AM
Q
I
Q
Pulse
AM
FM/φM
AF
TTL
TTL
TTL
TTL
TTL
50Ω
50Ω
50Ω
50Ω
TTL
600Ω
600Ω
600Ω
Digital Input
Stby On
Receiver
Cancel
UP TCH
Remote
Two-signal coupler
Set
]
Slot 0
Edit
Step
Offset
Value
: [Int]
System : [PDC ]
Mod
: π/4 DQPSK
Bit Rate : 42.0 kbit/s
Filter : [RNYQ] α=0.50
Screen Copy
Display Off/On
Cursor
Frequency
I/Q Output
I/Q Input / I/Q Output
Input
Output
RF
!
Reverse Power
50W Max≦1GHz
25W Max>1GHz
±50V DC Max
50Ω
Noise signal source
MG3681A + MU368060A
Function
MG3681A
Digital Modulation
Signal Generator
250kHz -3GHz
3-6GHz (Option)
Freq
Level
3 000.000 000 00 MHz
-123.15 dBm
Preset
Modulation Mode : I,Q
Contrast
Source
Burst : [On]
Pattern : [UP TCH
Trigger : [Int]
Panel Lock
Slot 0
F1
Frequency
Offset
On Off
F2
Level
Relative
On Off
F3
Digital Mod
Current
Frequency
F4
Analog Mod
Set
Cancel
Resolution
Invrement
Step Value
Slot 2
CE
BS
Shift
]
Slot 1
Edit
Step
Offset
Value
: [Int]
System : [PDC ]
Mod
: π/4 DQPSK
Bit Rate : 42.0 kbit/s
Filter : [RNYQ] α=0.50
Screen Copy
Display Off/On
Cursor
Frequency
F5
Memory
F6
Config
E
F
dB
7
8
9
GHz/dBm
C
%
6
MHz/mW
1
2
3
kHz/nW
0
・
-/+
Hz / fW
A
4
B
5
Digital
s /dBµV
Analog
ms / V
Save
UP TCH
Remote
△
Local
Data
△
Clock
IQ Input
Digital Input
Stby On
RF Output
rad / mV
RPP Reset
Off>○< On●
Recall
Symbol Clk
I/Q Output
I/Q Input / I/Q Output
Knob Hold
Modulation
D
deg / µV
Input
Output
1
2
3
4
5
I / Wide AM
Q
I
Q
Pulse
AM
FM/φM
AF
TTL
TTL
TTL
TTL
TTL
50Ω
50Ω
50Ω
50Ω
TTL
600Ω
600Ω
600Ω
!
Reverse Power
50W Max≦1GHz
25W Max>1GHz
±50V DC Max
RF
50Ω
Measurement procedure
[1] Set the frequency for the wanted signal source to the testing frequency.
[2] Set the output level of the unit to the proper level for the input connector of the receiver.
[3] Set the unit to W-CDMA modulation.
[4] Set the modulation parameter of the unit so that the receiver can receive the signal.
[5] Set the frequency for the noise signal source to that set in Step [1].
[6] Set the noise bandwidth for the unit to that wide enough for the
wanted signal.
[7] Set the calculated bandwidth for the unit to that for the wanted signal.
[8] Set the output level for the unit to the optimum level for the input
connector of the receiver. However, it should be higher by the noise
band calculation level.
[9] Measure the reception sensitivity of the receiver.
4-2.
Section 5 Sample Calibration
This section describes the calibration procedure for the output level when
using the MU368060A AWGN Unit. This example uses a W-CDMA system.
5.1
Calibration of the Output Level...................................
5.1.1 Adjusting the output level for
the signal generator .......................................
5.1.2 Adjusting the level at the input
connector terminal of the receiver .................
5.1.3 Measuring the level of the outputted noise ....
5.1.4 Calibration using the offset setting
function of the RF output level .......................
5-2
5-2
5-3
5-4
5-5
5-1
Section 5 Sample Calibration
5.1 Calibration of the Output Level
5.1.1
Adjusting the output level for the signal generator
Calibration of the output level at the RF connector terminal for the signal
generator is explained here.
A sample power setting with a 7.68 MHz noise signal bandwidth and –20
dBm/3.84 MHz at the RF output connector terminal is shown below.
<Calibration procedure>
(1)
Set the following parameters for this unit.
Digital Mod
: On
System
: Noise1
Noise Bandwidth
: 7.68 MHz
Calculate Bandwidth : 3.84 MHz
(2) Calculate the total noise power for –20 dBm/3.84 MHz.
Read the Calculated Level on the display. With the parameter set in
Step (1), this value should be –3.45 dBm. Figure out the total noise
power using the formula below:
Total power = –20 dBm – (–3.45 dB) = –16.55 dBm
(3)
Connect the power meter to the RF output connector for this unit.
Anritsu
Mキ3681A
(4)
Anritsu POWER METER ML4803A
Set the output level for this unit so that the indication value of the
power meter becomes the total power found in Step (2). This completes calibration to the –20 dBm/3.84 MHz noise level at the RF
output connector terminal.
<Level accuracy>
Consider the level accuracy for the setting of this calibration method. It
is figured out by the following formula:
Level accuracy
= Band calculated accuracy (Calculated Level accuracy) + power meter accuracy
= ±0.6 dB (when the noise band is 7.68 MHz) + power meter accuracy
5-2
5.1
Calibration of the Output Level
<Points>
In this calibration method, the output level accuracy of this unit can be ignored because the output level is directly measured by the power meter.
Conversely, by changing the output level of this unit after calibration, its
accuracy affects the level accuracy. The output level accuracy applies because the step accuracy (relative accuracy) of the output level is not specified for this unit. In this case, the noise level accuracy is the sum of the
level accuracy of this unit and the power meter accuracy.
5.1.2
Adjusting the level at the input connector terminal of the receiver
Calibration of the noise level at the input connector terminal of the receiver is explained here.
A sample power setting with a 7.68 MHz noise signal bandwidth and –73
dBm/3.84 MHz at the input connector terminal of the receiver is shown
below.
<Calibration procedure>
(1) Set the following parameters for this unit.
Digital Mod
: On
System
: Noise1
Noise Bandwidth
: 7.68 MHz
Calculate Bandwidth : 3.84 MHz
(2) Calculate the total noise power for –73 dBm/3.84 MHz.
Read the Calculated Level on the display. With the parameter set in
Step (1), this value should be –3.45 dBm. Figure out the total noise
power using the formula below:
Total power = –73 dBm – (–3.45 dB) = –69.55 dBm
(3) Set the RF output for the desired frequency signal generator to Off
and then connect the power meter to the input connector terminal of
the receiver.
Wanted signal source
A
Anritsu POWER METER ML4803A
Noise signal source
MA1612A
LOS S
A
Anritsu
15.0dB
IMPEDANSE
50 Ω
MAX POWER
1W
Receiver
5-3
Section 5 Sample Calibration
(4) Set the output level for this unit so that the indication value of the
power meter becomes the total power found in Step (2). This completes calibration to the –73 dBm/3.84 MHz noise level at the input
connector terminal of the receiver.
<Level accuracy>
See Section 5.1.1 for level accuracy.
<Points>
When –69.55 dBm is not able to be directly measured by the power meter,
insert a fixed attenuator into the receiver input and perform calibration
up to the necessary level of attenuation.
However, the calibration value for the attenuation of the fixed attenuator
should be measured in advance. Calibration accuracy for the fixed attenuator is added to the level accuracy.
5.1.3
Measuring the level of the outputted noise
Measurement of the noise signal level outputted at an unknown level is
explained here.
A sample power setting with a 7.68 MHz noise signal bandwidth and 3.84
MHz calculated bandwidth is shown below.
< Measurement procedure>
(1) The following parameters should be set for this unit.
Digital Mod
: On
System
: Noise1
Noise Bandwidth
: 7.68 MHz
Calculate Bandwidth : 3.84 MHz
(2) Measure the total noise power using the power meter.
Read the Calculated Level on the display. With the parameter set in
Step (1), this value should be –3.45 dBm. Figure out the noise power
for the calculated bandwidth using the formula below:
Noise power for the calculated bandwidth = power meter indication +
(–3.45 dB)
<Level accuracy>
Consider the level accuracy for this measurement. It is figured out using
the following formula:
Level accuracy
= Band calculated accuracy (Calculated Level accuracy) + power
meter accuracy
= ±0.6 dB (when the noise band is 7.68 MHz) + power meter accuracy
5-4
5.1
5.1.4
Calibration of the Output Level
Calibration using the offset setting function of the RF output level
Using the offset setting function of the RF output level of the MG3681A
with “(Absolute)” display, the noise level can be easily calibrated, as described below.
A sample on the same condition as that in Section 5.1.3 is shown below.
<Measurement procedure>
(1) Set the MU368060A as in Section 5.1.3 (1).
(2) Measure the total noise power using the power meter.
(3) Set the offset level of the MU368060A. The set value is as follows:
Set value of offset level = Reading of power meter - Set value of
RF output level of MU368060A
(4) Press Offset On Off to set Offset mode to On.
(5) The value displayed on “(Absolute)” becomes the noise power for the
calculated bandwidth.
<Level accuracy>
Immediately after calibration by power meter, the accuracy of the noise
power value displayed on “(Absolute)” is shown in the formula below:
Level accuracy = Band calculated accuracy (Calculated Level accuracy) +
power meter accuracy
If the MU368060A output level is changed after calibration by power meter, the accuracy of the noise power value displayed on Calculate Absolute
Level is shown in the formula below:
Level accuracy = Band calculated accuracy (Calculated Level accuracy) +
RF output level accuracy
5-5
Section 5 Sample Calibration
5-6.
Section 6 AWGN Internal Adder Function
This section explains the AWGN internal adder function available when
MU368060A is mounted with both MU368040A and MX368041A/B.
6.1
6.2
6.3
6.4
6.5
Product Outline........................................................... 6-2
Operation When Selecting W-CDMA ......................... 6-3
6.2.1 Main screen ................................................... 6-3
6.2.2 Scrambling Code & Others Edit screens ....... 6-5
Function Details.......................................................... 6-6
Operation When Selecting 1xEVDO .......................... 6-8
Function Details When Selecting 1xEVDO ................ 6-10
6-1
Section 6 AWGN Internal Adder Function
6.1 Product Outline
The MU368060A is capable of outputting I/Q and RF signals added with
W-CDMA uplink modulation wave and noise when mounted with both the
MU368040A and the MX368041A/B.
W-CDMA modulation wave and noise can be internally added in the following conditions:
Simulation Link
W-CDMA Phase
Chip Rate
Maximum Code Number
Up Link
1
3.84 Mcps
1 to 6
Noise parameters that can be set at noise internal addition are shown below:
Noise Bandwidth
C/N
Chip Rate x1.5 or x2.0
–30.0 to –20.0 dB (0.2 dB step)
–19.9 to –8.0 dB (0.1 dB step)
In addition, the MU368060A is capable of outputting I/Q and RF signals
added with a single carrier 1xEVDO modulation wave and noise when
mounted with both the MU368040A and the MU368030A+MX368033A.
1xEVDO modulation wave and noise can be internally added in the following conditions.
Over Sampling
Carrier
8
1
Note:
A single carrier 1xEVDO modulation wave, which is provided for
MX368033A as a standard, is satisfied with the above conditions.
Noise parameters that can be set at noise internal addition are shown below:
Noise Bandwidth
C/N
6-2
Chip Rate x4, x3, x2 or Tone
–30.0 to +30.0 dB (0.1 dB step)
6.2
Operation When Selecting W-CDMA
6.2 Operation When Selecting W-CDMA
When W-CDMA is selected for System while setting Up Link for Simulation Link, setting items for the AWGN internal adder function appear in
the Digital modulation setting screen for W-CDMA modulation.
Items not specifically mentioned can be set in the same as for the
MX368041A/B. Refer to the "MX368041A or MX368041B Operation
Manual."
6.2.1
Main screen
[1] W-CDMA Phase
Setting a value other than "1" for Phase turns the AWGN internal adder function Off.
[2] Simulation Link
Setting "Down Link" for Simulation Link turns the AWGN internal
adder function Off.
[3] Chip Rate
Setting a value other than "3.84 Mcps" for Chip Rate turns the noise
internal adder function Off.
[4] Filter Mode
This item is disabled while AWGN is set to On.
[5] Maximum Code Number
Selecting a value of "7" or larger for Simulation Link turns the AWGN
internal adder function Off.
6-3
Section 6 AWGN Internal Adder Function
[6] Output Level
Displays [(noise power for all bands)+(total power for multiplex channels of W-CDMA modulation wave)]
[7] AWGN
Sets the AWGN internal adder function On/Off. When set to Off, the
MX368041A/B standards apply to all items. When set to On, the
MU368060A, not the MX368041A/B, standards apply.:
•
Carrier frequency range
•
Number of multiplex channel
•
I/Q output signal
•
RF output signal
Setting item: On, Off
Initial value: Off
[8] C/N
Sets the ratio between noise power within 3.84 MHz bandwidth and
W-CDMA modulation wave power. Note that this is not the ratio for
noise power of all bands.
Setting range:
Initial value:
–30.0 to –20.0 dB (0.2 dB step)
–19.9 to –8.0 dB (0.1 dB step)
–20.0 dB
[9] Noise
Displays the ratio between Output Level and noise power within 3.84
MHz bandwidth.
When a warning message "Power under 0dB" is displayed, the displayed value does not match with actual output.
[10] Wanted
Displays the ratio between Output Level and W-CDMA modulation
wave power.
When a warning message "Power under 0dB" is displayed, the displayed value does not match with actual output.
6-4
6.2
6.2.2
Operation When Selecting W-CDMA
Scrambling Code & Others Edit screens
[1] Noise Bandwidth
Sets the noise bandwidth.
Setting item: Chip Rate x 1.5, Chip Rate x 2
Initial value: Chip Rate x 2
6-5
Section 6 AWGN Internal Adder Function
6.3 Function Details
Image diagram for the AWGN internal adder function is shown below:
Carrier frequency
Noise
(AWGN)
W-CDMA
Modulation Wave
3.84 MHz
7.68 / 5.76 MHz
Noise is added to the same carrier as the W-CDMA modulation wave and
outputted as I/Q and RF signals.
Setting and displayed values for the AWGN internal adder function are
shown below:
[1] C/N
Is the ratio between noise power within 3.84 MHz bandwidth and WCDMA modulation wave power. The total power of noise and WCDMA modulation wave is fixed to the set value for RF Level.
Therefore, the lower C/N is set, the larger the noise power becomes
and the lower the W-CDMA modulation wave power becomes. To
change the noise power while fixing W-CDMA modulation wave
power, both C/N and RF Level settings must be changed.
[2] Output Level
Is total of noise power and W-CDMA modulation wave power. Same
as the setting value for RF Level while using the AWGN internal adder function.
6-6
6.3
Function Details
[3] Wanted
Is the ratio between Output Level and W-CDMA modulation wave
power. This value is correct without a warning message "Power Under 0 dB" displayed.
W-CDMA modulation wave power = Output Level + Wanted
[4] Noise
Is the ratio between Output Level and noise power within 3.84 MHz
bandwidth. This is not the ratio for power of all bands. The difference between this value and the display value for Wanted is the same
as the setting value for C/N.
Note the following points when using the AWGN internal adder function:
• When AWGN is set to On, the noise power and W-CDMA modulation
wave power are set to match the setting value for RF Level. When
AWGN is set to Off, W-CDMA modulation wave power is set to match
the setting value for RF Level. For this reason, the transmission
power for W-CDMA modulation wave changes when AWGN is switched
between On and Off.
• Setting values such as for C/N and the display value such as for Wanted
become correct only when the total level for W-CDMA multiplex
channels is 0 dB. Use the AWGN internal adder function under
conditions whereby a warning message "Power Under 0 dB" is not
displayed.
6-7
Section 6 AWGN Internal Adder Function
6.4 Operation When Selecting 1xEVDO
When 1xEVDO is selected for System, additionally, Over sampling is 8 and
1xEVDO modulation wave of single carrier is set to Pattern, setting items
of AWGN internal adder function appear in the Digital modulation setting
screen for 1xEVDO modulation.
Items not specially mentioned can be set in the same as for the
MX368033A. Refer to the “MX368033A” operation manual.
[1] AWGN
Sets the AWGN internal adder function On/Off. When set to Off, the
MX368033A standards apply to all items. When set to On, the
MU368060A, not the MX368033A, standards apply to the following
specifications.
• Carrier frequency range
• I/Q output signal
• RF output signal
Setting item:
On, Off
Initial value:
Off
[2] C/N
Sets the ratio between noise power within 1.23 MHz band and
1xEVDO modulation wave power. Note that this is not the ratio for
noise power of all bands.
Setting range:
Initial value:
6-8
–30.0 to +30.0 dB (0.1 step)
–30.0 dB
6.4
Operation When Selecting 1xEVDO
[3] Wanted
Displays power of 1xEVDO modulation wave.
[4] Displays noise power within 1.23 MHz band.
[5] Noise Bandwidth
Sets noise bandwidth and selected in multiples of Calculated Bandwidth.
When Tone is selected, the tone signal of the same power as selected
for x4 is added, but not for AWGN.
Two times offset of Chip Rate from carrier frequency is added to the
frequency of tone signal.
Setting items:
Initial value:
CalcBWx4, CalcBWx3, CalcBWx2, Tone
CalcBWx4
[6] Calculated Bandwidth
Displays calculated bandwidth and fixed with1.23 MHz.
6-9
Section 6 AWGN Internal Adder Function
6.5 Function Details When Selecting 1xEVDO
Image diagram for the AWGN internal adder function is shown below:
Carrier frequency
Noise (AWGN)
1xEVDO Modulation
Wave
1.23 MHz
1.23 MHz x4/x3/x2
Noise is added to the same carrier as the 1xEVDO modulation wave and
outputted as I/Q and RF signal.
Setting and displayed values for the AWGN internal adder function are
shown below:
[1] C/N
Sets the ratio between noise power within 1.23 MHz band and 1xEVO
modulation wave power.
The total power of noise and 1xEVDO modulation wave is fixed to the
setting value for RF Level.
Therefore, the lower C/N is set, the larger the noise power becomes.
To change the noise power while fixing 1xEVDO modulation power,
both C/N and RF Level settings must be changed.
[2] Wanted
Displays power of 1xEVDO modulation wave.
6-10
6.5
Function Details When Selecting 1xEVDO
[3] Noise
Displays noise power within 1.23 MHz band. This is not power for
all noise bands.
The difference between this value and the display value for Wanted is
the same as the setting vale for C/N.
Note the following points for using the AWGN internal adder function.
• When AWGN is set to On, the power for 1xEVDO modulation wave are
set to match the setting value for RF Level. In addition, when AWGN
is Off, the power for 1xEVDO modulation wave is set to the setting for
RF Level.
For this reason, the transmission power for 1xEVDO modulation wave
changes when AWGN is switched between On and Off.
6-11
Section 6 AWGN Internal Adder Function
6-12.
Section 7 Remote Controls
This section provides the function list for the GPIB device messages and describes the messages in alphabetical order, when the MU368060A AWGN
Unit is mounted on the main frame.
For a description of the other remote controls, refer to Section 6 "Remote
Controls" in the "MG3681A Main Unit Operation Manual."
7.1
7.2
7.3
7.4
7.5
7.6
Device Message List by Function .............................. 7-2
Alphabetical Device Message List ............................. 7-5
Device Message List for AWGN Internal Adder
Functions When Selecting W-CDMA ......................... 7-12
Alphabetical Device Message List for AWGN
Internal Adder Functions When Selecting W-CDMA . 7-13
Device Message List for AWGN Internal Adder
Functions When Selecting 1xEVDO .......................... 7-17
Alphabetical Device Message List for AWGN
Internal Adder Function When Selecting 1xEVDO .... 7-18
7-1
Section 7 Remote Controls
7.1 Device Message List by Function
Command messages and query messages
The header of the command message is a reserved word represented by
uppercase alphanumeric characters. The header field of the query message ends with "?". The argument section of the command message and
the query message can contain multiple arguments delimited by a separator ",". Argument types are explained below:
[1] Uppercase characters : reserved words
[2] Numeric
: reserved words
[3] Lowercase characters in the argument section:
f (Frequency)
Suffix code
: numeric data (NR1, NR2 and NR3)
: GHZ, GZ, MHZ, MZ, KHZ, KZ, HZ
When the unit is omitted, HZ applies.
l (Level) (relative value) : numeric data
(NR1, NR2 and NR3-formats)
Suffix code
: DB
When the unit is omitted, DB applies.
n (integer without unit)
: numeric data (NR1-format)
r (real number without unit) : numeric data (NR2-format)
h (hexadecimal without unit) : numeric data (hexadecimal)
s (string)
7-2
: alphanumeric character enclosed in " " or ' '.
7.1
Device Message List by Function
Response message
A response message is returned to the external controller when a query
message is received, which is represented in the form "response header
field + response data section". Multiple response data may be included
by delimiting the response data section by a separator ",". Response data
types are explained below:
[1] Uppercase characters
: reserved word
[2] Numeric
: reserved word
[3] Lowercase characters in the argument section:
f (Frequency)
Suffix code
: numeric data (NR1-format)
: HZ
l1 (Level) (relative form) : numeric data (NR2-format)
Suffix code
: DB
l2 (Level) (absolute form): numeric data (NR2-format)
Suffix code
n (integer without unit)
: DBm
: numeric data (NR1-format)
r (real number without unit) : numeric data (NR2-format)
h (hexadecimal without unit): numeric data (hexadecimal)
Note:
When the header is set to Off, the header of the response message
and the suffix code of the numeric data are not outputted. For
header On/Off settings, refer to the "MG3681A Operation Manual."
7-3
Section 7 Remote Controls
Device message list
<Common>
Item
Controlled item
Device message
Command
message
Query
message
Response
message
I/Q Source Internal
MODE INT
IQSRC INT
MODE?
IQSRC?
MODE INT
IQSRC INT
I/Q Source External
MODE EXT
IQSRC EXT
MODE?
IQSRC?
MODE EXT
IQSRC EXT
I/Q Source OFF
MODE OFF
IQSRC OFF
MODE?
IQSRC?
MODE OFF
IQSRC OFF
System NOISE1
SYS NOISE1
SYS?
SYS NOISE1
<Noise Generation>
Item
Controlled item
Command
message
Query
message
NOISEBW
bandwidth
CALCBW
bandwidth
NOISEBW?
(bandwidth)
CALCBW?
(bandwidth)
Power in Calc. B.W.
-----
CALCLVL?
Absolute Power in
Calc. B.W.
-----
CALCALVL?
Bandwidth (Noise)
Bandwidth (Calc.)
7-4
Device message
Response
message
NOISEBW
CALCBW
CALCLVL
(level value)
CALCALVL
(level value)
7.2
Alphabetical Device Message List
7.2 Alphabetical Device Message List
<Example>
Message header
Detailed header name
FREQ
Frequency
Function
Sets the frequency.
Command message
FREQ f
A space is required between
the command message and f.
Input value
Value of f
–2.99975 to 3 GHZ
Input value explanation
: –2.99975 to 3 GHz
–2999.75 to 3000 MHZ
: –2999.75 to 3000 MHz
–2999750 to 3000000 KHZ
: –2999750 to 3000000 kHz
–2999750000.00 to 3000000000 HZ
: –2999750000.00 to 3000000000 Hz
Query message
FREQ?
Response message
FREQ f
Application example
FREQ 123 MHZ
7-5
C
CALCBW
Calculation Bandwidth
Function
Sets the calculated bandwidth.
The possible setting range is 10 to 80% of the noise bandwidth.
Command message
CALCBW f
Query message
CALCBW?
Response message
CALCBW f
Value of f
Within the range of 10 to 80% of the noise bandwidth.
Application example
CALCBW 3.84MHZ
CALCALVL
Calculation Absolute Level
Function
Reads power in the calculated band.
Available for query command only.
Query message
CALCALVL?
Response message
CALCALVL l2
7-6
C
CALCLVL
Calculation Bandwidth Level
Function
Reads the bandwidth calculation level.
Available for query command only.
Query message
CALCLVL?
Response message
CALCLVL l1
7-7
I
IQSRC
I/Q Source
Function
Selects between internal generation or external input for the I/Q
signal.
Command message
IQSRC a
Value of a
INT
: Internal (Internal I/Q signal)
EXT
: External (External I/Q signal)
OFF
: I/Q modulation stops (Only Pules modulation is available.)
Query message
IQSRC?
Response message
IQSRC a
Application example
IQSRC EXT
7-8
M
MODE
I/Q Source
Function
Selects between internal generation or external input for the I/Q
signal.
Command message
MODE a
Value of a
INT
: Internal (Internal I/Q signal)
EXT
: External (External I/Q signal)
OFF
: I/Q modulation stops (Only pulse modulation is available.)
Query message
MODE?
Response message
MODE a
Application example
MODE EXT
7-9
N
NOISEBW
Noise Bandwidth
Function
Sets the noise bandwidth.
Command message
NOISEBW f
Value of f
1.5 to 16 MHz
Query message
NOISEBW?
Response message
NOISEBW f
Restriction
When Ext is set for I/Q signal source, screen display and remote control are disabled.
Application example
7-10
NOISEBW 10MHZ
S
SYS
Noise System
Function
Sets the communication system.
Command message
SYS a
Value of a
NOISE1 : selects noise
∗∗∗
: other system such as TDMA unit
Query message
SYS?
Response message
SYS a
Application example
SYS NOISE1
7-11
Section 7 Remote Controls
7.3 Device Message List for AWGN Internal Adder
Functions When Selecting W-CDMA
This section provides the functional list of GPIB device messages when
using the AWGN internal adder function with W-CDMA selected as explained in Section 6.
Refer to Section 7.1 for details on command, query and response messages.
Item
Control Item
AWGN Addition ON
AWGN Addition OFF
C/N
Wanted Signal Power
Noise Signal Power
Noise Bandwidth
Chip Rate x1.5
Noise Bandwidth
Chip Rate x2
7-12
Device Message
Command
Message
Query
Message
Response
Message
NOISEADD ON
NOISEADD OFF
PWRCNR l
−
−
NOISEBW CR1H
NOISEADD?
NOISEADD?
PWRCNR?
PWRWS?
PWRNS?
NOISEBW?
NOISEADD ON
NOISEADD OFF
PWRCNR l
PWRWS l
PWRNS l
NOISEBW CR1H
NOISEBW CR2
NOISEBW?
NOISEBW CR2
7.4
Alphabetical Device Message List for the AWGN Internal Adder Function
7.4 Alphabetical Device Message List for AWGN
Internal Adder Functions When Selecting W-CDMA
This section details the alphabetical list of GPIB device messages when
using the AWGN internal adder function with W-CDMA selected as explained in Section 6.
7-13
N
NOISEADD
AWGN Addition
Function
Sets internal addition of noise and W-CDMA modulation wave
On/Off.
Command message
NOISEADD a
Value of a
ON
: Sets the internal adder function On.
OFF : Sets the internal adder function Off.
Query message
NOISEADD?
Response message
NOISEADD a
Application example
NOISEADD ON
NOISEBW
Noise Bandwidth
Function
Sets the noise bandwidth.
Command message
NOISEBW a
Value of a
CR1H
: Sets the noise bandwidth to 1.5 times the Chip Rate.
CR2
: Sets the noise bandwidth to twice the Chip Rate.
Query message
NOISEBW?
Response message
NOISEBW a
Application example
NOISEBW CR2
7-14
P
PWRCNR
C/N
Function
Sets the ratio of modulation wave power to noise within bandwidth
power (C/N).
Command message
PWRCNR l
Value of l
–30.0 to –8.0 dB
Query message
PWRCNR?
Response message
PWRCNR l
Application example
PWRCNR –8.0 dB
PWRNS
Noise Signal Power
Function
Queries the noise power ratio within the bandwidth.
Query message
PWRNS?
Response message
PWRNS l
Value of l
–143.0 to 17.0 dB
Application example
PWRNS?
7-15
P
PWRWS
Wanted Signal Power
Function
Queries the modulation wave power ratio.
Query message
PWRWS?
Response message
PWRWS l
Value of l
–143.0 to 17.0 dB
Application example
PWRWS?
7-16
7.5
Device Message List for AWGN Internal Adder Functions When Selecting 1xEVDO
7.5 Device Message List for AWGN Internal Adder
Functions When Selecting 1xEVDO
This section provides the function list of the GPIB device message when
using AWGN internal function with 1xEVDO selected as explained in Section 6.
Refer to Section 7.1 for details on command, query and response messages.
Item
Device message
Control item
Command
message
Query
message
Response
message
AWGN Addition On
AWGN Addition Off
C/N
Wanted Signal Power
Noise Signal Power
Noise Bandwidth x4
NOISE ON
NOISE OFF
NOISECN l
-
-
NOISEBW
CBWX4
NOISEBW
CBWX3
NOISEBW
CBWX2
NOISEBW TONE
NOISE?
NOISE?
NOISECN?
WNTSGPWR?
NOISEPWR?
NOISEBW?
NOISE ON
NOISE OFF
NOISECN l
WNTSGPWR l
NOISEPWR l
NOISEBW
CBWX4
NOISEBW
CBWX3
NOISEBW
CBWX2
NOISEBW TONE
Noise Bandwidth x3
Noise Bandwidth x2
Noise Bandwidth
Tone
NOISEBW?
NOISEBW?
NOISEBW?
7-17
Section 7 Remote Controls
7.6 Alphabetical Device Message List for AWGN
Internal Adder Function When Selecting 1xEVDO
This section details the alphabetical device message for GPIB device message when using AWGN internal adder function with 1xEVDO selected as
explained in Section 6.
Refer to an example in Section 7.2 regarding this format.
7-18
N
NOISE
AWGN Addition
Function
Sets AWGN and 1xEVDO modulation wave internal adder On/Off.
Command message
NOISE a
Value of a
ON
: Sets the internal adder function On.
OFF : Sets the internal adder function Off.
Query message
NOISE?
Response message
NOISE a
Application example
NOISE ON
NOISEBW
Noise Bandwidth
Function
Sets AWGN bandwidth.
Command message
NOISEBW a
Value of a
X4
: Sets the noise bandwidth to 4 times the chip Rate.
X3
: Sets the noise bandwidth to 3 times the chip Rate.
X2
: Sets the noise bandwidth to 2 times the chip Rate.
TONE
: Sets tone signal of power equivalent to noise.
Value of a
Query message
NOISEBW?
Response message
NOISEBW a
Application example
NOISEBW X4
7-19
N
NOISECN
C/N
Function
Sets the ratio between modulation wave power and noise power
within band (C/N).
Command message
NOISECN l
Value of 1
–30.0 to +30.0 dB
Query message
NOISECN?
Response message
NOISECN l
Application example
NOISECN –8.0DB
NOISEPWR
Noise Signal Power
Function
Queries noise power within band.
Query message
NOISEPWR?
Response message
NOISEPWR l
Value of 1
–143.0 to +17.0 dB
Application example
NOISEPWR?
7-20
W
WNTSGPWR
Wanted Signal Power
Function
Queries the modulation power
Query message
WNTSGPWR?
Response message
WNTSGPWR l
Value of 1
–143.0 to +17.0 dB
Application example
WNTSGPWR?
7-21
Section 7 Remote Controls
7-22.
Section 8 Performance Test
This section explains the required measuring instruments and procedures
for setup, calibration and performance test to confirm that the
MU368060A satisfies the standards.
8.1
8.2
8.3
8.4
Performance Test.......................................................
Devices used in Performance Test ............................
RF Output Level Accuracy .........................................
In-band Power Calculation Accuracy .........................
8-2
8-3
8-4
8-5
8-1
Section 8 Performance Test
8.1 Performance Test
The performance test is required to check that the MU368060A satisfies
the standards.
Conduct the performance test when required such as on acceptance inspection, periodic inspection or after repair.
If the performance test result shows that the MU368060A does not satisfy
the standards, please contact Anritsu's service division.
The performance test for the MU368060A consists of the following test
items:
• RF output level accuracy
• In-band power calculation accuracy
Conduct the performance test periodically for important items as preventive maintenance. It is recommended to conduct the test once or twice a
year.
Save the result of the performance test using Appendix C "Performance
Test Result Sheet."
Caution
Before conducting the performance test, turn MU368060A
and devices used ON for at least 30 minutes to fully
stabilize them. Conduct the test at room temperature, with
stable AC power source voltage and without noise,
vibration, dust and humidity for the best measurement
accuracy.
8-2
8.2
Devices used in Performance Test
8.2 Devices used in Performance Test
The devices used in the performance test of the MU368060A are shown in
the table below:
Performance
Test Item
Recommended Device
Name
RF output level Power meter
accuracy
Power sensor
In-band power
Spectrum analyzer
calculation
(with RMS detection mode)
accuracy
Anritsu Model Name
ML4803A
MA4601A
MS2683A + Opt04
8-3
Section 8 Performance Test
8.3 RF Output Level Accuracy
(1) Test criteria
ALC On, output: –3 dBm, level difference from results during CW and
during modulation at noise bandwidth of 7.68 MHz: ±3 dB (excluding
when noise internal adder function is On.)
(2) Measuring instruments for test
• Power meter .........ML4803A
• Power sensor ........MA4601A
(3) Setup
MG3681A+
MU368060A
ML4803A
Power Meter
Anritsu
M キ 3681A
Anritsu POWER METER ML4803A
Sensor Input
RF Output
ML4803A
Power Sensor
(4) Test procedures
[1] Set the communication system for the MU368060A to "NOISE1".
[2] Press the [Preset] button and then set the following parameters:
Baseband : On
Noise : 7.68 MHz
[3] Set the RF Output on the MU368060A to Off.
[4] Perform zero point adjustment and sensor sensitivity calibration
of the power meter.
[5] Set the output level of the MU368060A to –3 dBm.
[6] Set the frequency to be measured on the MU368060A.
[7] Set the sensor calibration factor for the power meter.
[8] Set the RF Output on the MU368060A to On and then measure
the output level.
[9] Set the following prameters.
Digital Modulation : On
[10] Repeat procedures from [3] to [8].
[11] Find the level difference from the results [7] during CW and [9]
during modulation.
8-4
8.4
In-band Power Calculation Accuracy
8.4 In-band Power Calculation Accuracy
(1) Test criteria
Power ratio accuracy within the calculated bandwidth to total power
(when RF output level is –3 dBm)
±0.6 dB (1920 to 2170 MHz, noise band width set value: 4 to 8 MHz)
±2.0 dB (1920 to 2170 MHz, noise band width set value: 8 to 16 MHz)
(excluding when the noise internal adder function is On.)
(2) Measuring instruments for test
• Spectrum analyzer (with RMS detection mode)......MS2683A +
Opt04
(3) Setup
MS2683A + Opt04
Spectrum Analyzer
MG3681A+
MU368060A
Anritsu
Anritsu M キ 3681A
MS2683A
RF Output
(4)
RF Input
Test procedures
[1] Set the communication system for the MU368060A to "NOISE1".
[2] Press the [Preset] button and then set the following parameters:
Digital Modulation: On
[3] Set Noise Bandwidth and Calculate Bandwidth to be measured
on the MU368060A.
[4] Set the output level of the MU368060A to –3 dBm.
[5] Set the frequency to be measured on the MU368060A.
[6] Set the following parameters on the MS2683A. (For MS2683A
operations, refer to its operation manual.)
SPAN
RBW
VBW
Detector Mode
Storage Mode
Average Count
Sweep Time
: 1.25 times or more of Noise Bandwidth
: 1/150 times or less of Noise Bandwidth
: Auto
: Rms
: Linear Average
: 50
: Auto
8-5
Section 8 Performance Test
Reference Level
: 10 dBm
Amplitude Scale : 10 dBm
[7] Perform waveform averaging with the spectrum analyzer.
[8] Measure the power for calculated bandwidth by using the noise
measurement function of the spectrum analyzer.
[9] Measure the power for all bands by using the noise measurement
function of the spectrum analyzer.
[10] Calculate the calculated level from the values measured in Step
[3] and [4].
Calculated Level = all bands [dBm] - calculated bandwidth [dBm]
[11] Calculate the difference between the calculated level obtained
using the formula above and that displayed on the MG3681A
screen.
8-6.
Appendix
Appendix A Specifications .................................................A-1
Appendix B Initial Value List ..............................................B-1
Appendix C Performance Test Result Sheet .....................C-1
App-1
Appendix
App-2.
Appendix A Specifications
Item
Application
Carrier frequency range
Noise data Probability
distribution
Bandwidth
Crest factor
Calculated
bandwidth
In-band Power
calculation
accuracy
C/N setting
range
RF output Output level
signal
setting range
Level accuracy
Specifications
Noise (AWGN) signal source for reception sensitivity
test of CDMA modulation radio equipment.
1920 to 2170 MHz
Gauss distribution
1.5 to 16 MHz (excluding when the AWGN
internal adder function is On.)
≥14 dB (RF signal, output level: ≤–3 dBm, excluding
the continuous mode)
10 to 80% of the setting value for noise bandwidth
(excluding when the AWGN internal adder
function is On.)
Power ratio accuracy within the calculated
bandwidth to total power at 18 to 35°C
±0.6 dB (noise band width set value: 1.5 to 4 MHz,
typical)
±0.6 dB (noise band width set value: 4 to 8 MHz)
±2.0 dB (noise band width set value: 8 to 16 MHz)
(excluding when the AWGN internal adder function
is On.)
When the AWGN internal adder function is On:
For W-CDMA selected
–30.0 to –20.0 dB (resolution: 0.2 dB)
–19.9 to –8.0 dB (resolution: 0.1 dB)
For 1xEVDO selected
–30.0 to +30.0 dB (resolution: 0.1 dB)
–143 to –3 dBm
Within ±3.0 dB for the level at CW when ALC: On,
output: –3 dBm, noise bandwidth: 7.68 MHz, (excluding
when the AWGN internal adder function is On)
Number of used slots
Mass
1 slot
≤400 g
A-1
Appendix A Specifications
A-2.
Appendix B Initial Value List
B
Initial Value List
When Noise is selected for System
Setting
Initial value
Noise
Calculated
7.68 MHz
3.84 MHz
When the AWGN internal adder function is On with W-CDMA selected
Setting
Initial value
AWGN
C/N
Noise Bandwidth
Off
–20.0 dB
Chip Rate x2
When the AWGN internal adder function is On with 1xEVD selected
Setting
Initial value
AWGN
C/N
Noise Bandwidth
Off
–30.0 dB
CalcBWx4
B-1
Appendix B Initial Value List
B-2.
Appendix C Performance Test Result Sheet
C
Performance Test Result Sheet
Test site :
Model
Report No.
Date
Person in charge
MG3681A Digital Modulation Signal Generator
+ MU368060A AWGN Unit
Serial No.
Power source frequency
Ambient temperature
Relative humidity
Hz
°C
%
Remarks:
Output level accuracy (Section 8.3)
Output level
: –3 dBm
Measurement uncertainty : ±0.2 dB
Frequency
Result
Maximum Specification Value
1920 MHz
1970 MHz
2020 MHz
Level accuracy at CW: ±3.0 dB
2070 MHz
2120 MHz
2170 MHz
In-band power calculation accuracy (Section 8.4)
Output level
: –3 dBm
Noise bandwidth
MHz
Calculated bandwidth
:
MHz
Measurement uncertainty : ±0.1 dB
Frequency
Result
Maximum Specification Value
1920 MHz
1970 MHz
2020 MHz
2070 MHz
2120 MHz
±0.6 dB when noise bandwidth is ≤8 MHz
±2.0 dB when noise bandwidth is ≤16 MHz
2170 MHz
C-1
Appendix C Performance Test Result Sheet
C-2.
Index
[Alphabetical Order]
C
Calculated Bandwidth .........................................3-2, 3-3, 3-4, 3-5, 3-6, 5-2,
5-3, 5-4
Calculated Level ...................................................3-3, 3-4, 3-5, 3-6, 5-2, 5-3,
5-4, 5-5
C/N.........................................................................6-4
N
Noise Bandwidth ..................................................3-2, 3-3, 3-4, 3-5, 3-6, 5-2
5-3, 5-4
P
Power within the calculated bandwidth .............3-4, 3-5, 3-6
R
Reception sensitivity ............................................4-2
W
Wanted signal .......................................................4-2, 5-3
Index-1
Index
Index-2.