Aeroflex | 2945B | 2945B Data Sheet

Wireless
2945B Communications Service Monitor
A compact, lightweight and rugged instrument that allows laboratory
standard measurements to be conducted in the field
•
Rugged lightweight package
Field Operation
•
Full span spectrum analyzer with ‘live’
look and listen
•
Tracking generator with full offset
tracking
At under 12 kg (25 lb), the 2945B lightens the load to remote sites.
The shape of the 2945B is ideal for carrying. The side handle
ensures that the instrument is clear of the stairs when ascending
buildings and the depth is suitable for the 2945B to be operated
comfortably when it is placed on the floor.
•
Accurate power measurement to 150 W
•
5 W protection on all RF ports as
standard
•
Color transflective superfast LCD with
rapid refresh rate for easy monitoring and
real time adjustment
•
50 kHz DSO (Digital Storage
Oscilloscope) with anti-aliasing
•
Transient and Harmonic analysis
The 2945B Communications Service Monitor is
the lightest, most rugged service monitor available with a full performance spectrum analyzer
as standard. For field work the 2945B provides
an excellent combination of instruments for all
types of maintenance work. In the workshop, it
provides all of the performance you would
expect for exacting measurements.
A large color transflective (improved sunlight readable) display aids
operation under harsh viewing conditions.
An optional bail arm is also available. This option allows a stowage
cover to be fitted over the front panel for storage of adapters and further protection to the instrument’s front panel. A selection of cases
are available including a hard transit case, standard soft carrying case
or an integrated soft carrying/optional case allowing full operation
without removal from the protective case.
Internal Battery
Utilizing NiMH technology the internal battery option provides 60
minutes operation in the field.
Compact and light the 2945B is equally at home in the field as on a
bench.
Fast Warm Up - Fast Results
The standard TCXO allows results to be made reliably within a
minute of switch on. Where even better stability is required, an
optional OCXO is available.
Stored settings may be recalled from internal memory or from a
memory card, allowing fast and straightforward setting up.
Fast Full Performance Spectrum Analyzer - provided as standard
The spectrum analyzer provides spans from 100 Hz per division to
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full span and also has a fully adjustable reference level. Speed is comparable with analog analyzers, allowing real time adjustments over the
displayed dynamic range. With the tracking generator provided as
standard, duplexers and filters can be aligned quickly and easily. An
offset facility provides testing of equipment with frequency translation. Channel stepping can be performed by defining an increment
and then using the FREQ keys. This is particularly useful when
testing multi-channel systems.
Remote Control - RS-232 or GPIB
Remote control is provided with an RS-232 interface as standard. An
IEEE-488.2 interface (Option 5) can be fitted where other instruments are required to operate in a system with the 2945B.
Printing and Post Analysis
Live Look and Listen
This feature puts the 2945B above all its peers with the ability to
examine signals on the screen and demodulate them simultaneously.
Intermittent interference can be isolated quickly and the signals then
easily identified. The trace can be saved to the memory card along
with the time and date, providing factual evidence that can be recalled
later. This feature is particularly useful when looking for rogue transmissions, especially on busy basestation sites.
With the parallel printer port interface, screen dumps, automatic test
results or previously stored results may be sent to any parallel printer.
These facilities are available as standard using the serial RS-232
interface.
A screen capture facility is available so any screen displayed on the
2945B Communications Service Monitor can be saved direct to a PC,
via the serial port, as a bit map file.
A single trace dump command allows fast transfer of the spectrum
analyzer, OBW or transient analysis trace to be transferred as 249
ordinate values for detailed post-proccessing and analysis.
From 2 μV to 150 Watts
Autorun - internal control
The 2945B will measure the power of low level signals such as those
encountered when monitoring off-air signals or those found when
probing a circuit. 150 Watts measurement is provided without the
need for external attenuators, so high power base stations can be
measured directly. Measurement accuracy of better than 10% is
guaranteed all the way down to 5 mW on the N-Type connector, allowing radios to be qualified at low power levels.
With the (optional) Analog Systems Card fitted, automatic testing
without an external controller is possible. Custom tests may be written and run by the operator. Four programmable relay contacts are
provided with the optional parallel printer interface to allow remote
control of radios or test fixtures from built-in automatic tests.
Accurate RF Signals
The signal generator provides coverage from 400 kHz to 1.05 GHz
with +5 dBm output (+7 dBm overrange) and fast switching speed.
Level accuracy is ±2 dB at all levels above -127 dBm.
Custom Programs
Users may program the instrument to suit their own specific needs.
This is possible either by configuring any of the range of built-in programs or by using the MI-BASIC interpreter to produce a customized
test program that can be executed internally, without an external controller.
Duplex - provided as standard
Full duplex operation is provided by the 2945B. This allows testing of
duplex radios as well as simultaneous testing of repeater transmit and
receive paths. There are no restrictions to the duplex offset.
PMR, Trunking and Cellular
The 2945 provides extensive support for the various tone signaling
systems used in Professional Mobile Communications such as
DTMF, TONE REMOTE (Option), DCS and CTCSS. Also a highly
flexible user defined system enables the instrument to be configured
to accommodate a wide variety of other tone formats that are in use.
Additionally trunked networks are supported with network signaling
protocol simulations for MPT-1327/1343, LTR (available Oct 05) and
EDACS radio / repeater measurements. Legacy analog cellular standards are also available internally and include AMPS, TACS and
NMT with all country variants provided.
Memory Card - with real time clock
The Memory Card Drive meets the PCMCIA standard format for PC
cards. The 2945B provides a DOS based filing system that allows
transfer of information to a PC fitted with a memory card slot.
Test setups, test results, screen dumps, spectrum analyzer
coordinates and test sequences can all be stored on the memory card,
allowing information to be easily stored and retrieved when required.
Reliability
POCSAG Decode - built in option
The 2945B features high integration with a rugged chassis design to
maximize mechanical protection.
Off-air decoding of POCSAG signals is provided as an option. This
allows tone, numeric and alphanumeric signals to be displayed.
Signals with bit rates of up to 4800 bits/s can be automatically detected making the 2945B an ideal surveillance tool. The 2945B can be set
to detect all messages, a user selectable RIC (just like a Pager), or a
fixed message string.
Audio Analysis
A comprehensive and expanded range of filter selection is provided as
standard, including band pass, lowpass and high pass. Optional filters are available for psophometric weighting of audio signals and
demodulation of signals in a simulated radio channel bandwidth.
The standard 1 kHz notch filter provides for normal distortion/SINAD measurements. Additional notch filters can be added to
enable distortion/SINAD measurements for signals in the range 50
Hz to 20 kHz where required.
The direct measurement of CTCSS is possible with the 300 Hz LP
filter, even with speech present.
Two comprehensive audio generators are provided as standard for
internal modulation or audio sources for transmitter stimulus.
SPECIFICATION
External DC coupled FM is provided.
GENERAL INFORMATION
Comprehensive Oscilloscope
Analysis of audio signals, whether from the demodulated signal or the
audio input direct, can be viewed for further inspection. The oscilloscope can either be combined with the measurement screen in the
Tx, Rx or AF test modes or ‘zoomed’ to a full screen display.
Different levels of persistence can be selected to allow short or long
term effects to be captured.
Transient Analysis
Certain characteristics are shown as typical. These provide additional
information for applying the instrument, but are unwarranted.
RF SIGNAL GENERATOR
FREQUENCY
Frequency Range
400 kHz to 1.05 GHz
Resolution
The ability to capture transients on the rising or falling edge of a
waveform provides a valuable tool for fault finding radios and radio
systems. The user has full control of the trigger level and input attenuation as well as the timebase and five fixed trigger points, making
this feature simple and flexible to operate.
10 Hz
Indication
10 digit display
Setting
Keyboard entry, delta increment/decrement function and rotary control
Accuracy
As frequency standard
OUTPUT LEVEL
Output Level Range
Rx Test:
N-Type socket: -141 dBm to -21 dBm
Harmonic Analysis
BNC socket: -115 dBm to +5 dBm
An automatic harmonic analysis function is included in the 2945B.
This complements the fast spectrum analyzer and allows a rapid
check that the transmitter is not producing any large harmonics.
(overrange to +7 dBm)
Tones Generation and Decoding
The tones menus include full remote control so that radio workshops
can further automate their tasks. It is possible to enter tones durations of up to 20 seconds directly, simplifying operation with some of
the more extreme tones systems in use. These and other improvements are in response to user feedback and allow better control of the
tones from the top level screens.
Resolution
0.1 dB
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Indication
4 digits plus sign (dBm, dBμV, μV, mV PD/EMF)
Accuracy
±2 dB for levels above -127 dBm on N-Type socket up to 1 GHz
Atten Hold Facility (CW and FM modes only)
Allows user to define start point for seamless generator operation
across a range of up to 20 dB (guaranteed 10 dB minimum)
Reverse Power Protection
N-Type: 50 W 10 minutes, normal operation
150 W for 1 minute at 20°C
Overload indicated by audible and visual warning
BNC: 5 W Overload indicated by audible and visual warning
Output Impedance
Nominally 50 Ω
Setting
Keyboard entry, delta increment / decrement function and rotary control
Accuracy
For carrier frequencies from 1.5 MHz to 400 MHz
± 7% ± 1 digit for modulation frequency of 1 kHz
± 10% ± 1 digit for modulation frequencies from 50 Hz to 5 kHz
± 15% ± 1 digit for modulation frequencies from 50 Hz to 15 kHz
Distortion
Less than 2% at 1 kHz for 30% AM, CCITT weighted
Modulation Frequency
5 Hz to 33 kHz
AMPLITUDE MODULATION - EXTERNAL
Input Impedance
Nominally 10 kΩ in parallel with 40 pF
VSWR
Frequency Range
N-Type
As internal AM
Better than 1.2:1 up to 500 MHz
Better than 1.35:1 up to 1.05 GHz
BNC
Better than 2.2:1 up to 1.05 GHz
SPECTRAL PURITY
(If you require even better spectral purity than that specified here,
please consider the 2948B)
Residual FM
Less than 15 Hz RMS (0.3 to 3.4 kHz) up to 500 MHz
Less than 20 Hz RMS (0.3 to 3.4 kHz) up to 1.0 GHz (with OCXO)
Harmonics
Better than -20 dBc
Spurious Signals
Better than -30 dBc (±10 kHz to 1.5 MHz offset from carrier frequency or over range 600 to 700 MHz)
Better than -40 dBc from 400 kHz to 1 GHz
SSB Phase Noise (20 kHz offset)
Better than -95 dBc/Hz up to 1 GHz
RF Carrier Leakage
Less than 0.5 μV PD generated in a 50 Ω load by a 2 turn loop
25 mm from the case. Output level less than -40 dBm into a sealed
50 Ω load.
AMPLITUDE MODULATION - INTERNAL
Frequency Range
400 kHz to 1.05 GHz
AM Depth Range
0 to 99%
Resolution
1%
Indication
2 digits
Modulation Frequency Range
As internal AM
Sensitivity
1 V RMS for 0 to 100% AM
FREQUENCY MODULATION - INTERNAL
Frequency Range
400 kHz to 1.05 GHz
Maximum Deviation
0 to 75 kHz
Indication
3 digits
Setting
Keyboard entry, delta increment/decrement function and rotary control
Accuracy (1)
±5% ± 10 Hz at 1 kHz modulating frequency
±10% at modulating frequencies from 50 Hz to 15 kHz
Distortion
Less than 1% at 1 kHz for deviation of 5 kHz, CCITT weighted
Modulation Frequency Range
5 Hz to 33 kHz
Resolution
25 Hz
Pre-emphasis
750 μs selectable
FREQUENCY MODULATION - EXTERNAL
Input Impedance
Nominally 10 kΩ in parallel with 40 pF
Frequency Range
As internal FM
AUDIO SINAD METER
Modulation Frequency Range
DC to 100 kHz
Frequency
Pre-emphasis
1 kHz (additional frequencies available with option 29)
750 μs selectable
Range
Sensitivity
0 to 18 dB and 0 to 50 dB
1 Volt RMS for 0 to 75 kHz deviation
Resolution
MICROPHONE INPUT
0.1 dB
Input Level
Indication
2 mV to 200 mV (AGC levelled)
3 digits and bar charts
Input Impedance
Accuracy
Nominally 150 Ω
±1 dB
Press To Talk (PTT)
Sensitivity
When using the optional microphone in Tx Test mode, the PTT will
switch instrument to Rx Test.
AUDIO VOLTMETER
AUDIO DISTORTION METER
Input Impedance
Frequency
Nominally 1 MΩ in parallel with 40 pF
1 kHz (additional frequencies available with option 29)
Frequency Range
Range
DC and 50 Hz to 50 kHz
AC only 50 Hz to 50 kHz
Polarized DC (below 1 Hz)
0 to 10%, 0 to 30% and 0 to 100%
Resolution
Maximum Input Voltage
0.1% distortion
30 VRMS, 50 Vdc
Indication
Level Ranges
3 digits and bar charts
0 to 100 mV to 0 to 100 V RMS in a 1, 3, 10 sequence.
Digital readout also in mW, dBm, dBV, dBr (user selectable)
External load R selectable compensation for 4, 8, 16, 75, 100, 150,
300, 600 Ohms
Peak hold facility
Resolution
1 mV or 1% of reading
Indication
50 mV (100 mV for 40 dB SINAD) reading suppressed if audio voltage
is less than 5 mV
Accuracy
±5% of reading ± 0.5% distortion
Sensitivity
50 mV (100 mV for 1% distortion) reading suppressed if audio voltage
is less than 5 mV
AUDIO S/N METER
Range
3 digits and bar chart
Accuracy
0 to 30 dB and 0 to 100 dB
Resolution
±3% ±3 mV ±1 digit
AUDIO FREQUENCY METER
Frequency Range
20 Hz to 20 kHz
0.1 dB
Indication
3 digits and bar chart
Accuracy
±1 dB
Resolution
0.1 Hz, less than 10 kHz
1 Hz, at 10 kHz and above
Indication
5 digits
Sensitivity
50 mV (100 mV for 40 dB S/N) reading suppressed if audio voltage is
less than 5 mV
AUDIO OSCILLOSCOPE
Accuracy
Operating Modes
As frequency standard ± 1 digit ± resolution
Single with digital storage on screen or repetitive sweep
Sensitivity
50 mV
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Frequency Range
DC to 50 kHz, 3 Hz to 50 kHz AC coupled
Voltage Range
10 mV to 20 V per division in a 1, 2, 5 sequence
Voltage Accuracy
±5% of full scale
FM Ranges
±75, 30, 15, 6, 3 and 1.5 kHz deviation full scale, ±10% accuracy
AM Ranges
20, 10 and 5% per division, ±10% accuracy
Timebase
50 μs/div to 5 s/div in a 1, 2, 5 sequence
Accuracy
As frequency standard ± resolution
Acquisition Time
Less than 1 second (manual tune)
Typically 3 seconds (auto-tune)
Sensitivity
Auto-tuned: 5 mW (N-Type)
0.05 mW (Antenna port)
Manual Tuned: -34 dBm (N-Type)
-60 dBm (Antenna port)
Auto or manual control of input attenuator
VSWR
N-Type: Better than 1.2:1 up to 500 MHz
Better than 1.25:1 up to 1.05 GHz
BNC: Better than 3:1 up to 1.05 GHz
Graticule
10 Horizontal by 6 Vertical divisions
Special Features
Built in anti-aliasing circuitry and variable decode trigger level
AUDIO BAR CHARTS
Bar Chart Displays
AF Voltage, SINAD, Distortion, S/N
Vertical Resolution
2% of full scale
Ranging
Auto-ranging, range hold or manual selection
1, 2, 5, sequence with hysteresis
Audio and Modulation Filters
Lowpass filters
RF POWER METER (BROADBAND)
Frequency Range
200 kHz to 1.05 GHz
Dynamic Range
5 mW to 150 W (N-Type)
0.05 mW to 250 mW (Antenna port)
Indication Units
Watts, dBm or dBW
Indication
3 digits or bar chart
Resolution
0.1 dB max, typically 1%
Accuracy (N-Type)
±10% ± resolution up to 1 GHz (FM & CW)
Four independently configurable Lowpass filters LP1, LP2, LP3, LP4
that can be set to any frequency cut off point from 250 Hz to
20000 Hz
(excluding the band 1001 Hz to 2999 Hz)
Maximum Continuous Rating
50 kHz Lowpass (No filters applied)
Intermittent Rating
750 μs de-emphasis
Highpass filters
N-Type: 50 W at 20°C
Antenna port: 1 W
N-Type: 150 W for limited periods, typically 1 minute at 20°C.
Overload indicated by audible and visual warning.
50 Hz Highpass, 300 Hz Highpass
Bandpass filters
Any combination of LP1, LP2, LP3, LP4 and the Highpass filters
Audio Analyzer General Features
Tones Mode
RF FREQUENCY METER
Frequency Range
100 kHz to 1.05 GHz (manual tune)
10 MHz to 1 GHz (auto-tune)
Resolution
1 Hz or 10 Hz, up to 1050 MHz, selectable
0.1 Hz, 1 Hz or 10 Hz up to 999 MHz, selectable
Indication
Up to 10 digits
HARMONIC AND TRANSIENT ANALYSIS
HARMONIC MEASUREMENT
Displays 1st to 5th harmonic of the selected carrier
Maximum Harmonic Frequency
1.05 GHz
Accuracy
Dynamic Range
(1)
±5% ±1 digit at 1 kHz
0 to -60 dBc
±8.5% ±1 digit from 50 Hz to 10 kHz
TRANSIENT POWER ANALYSIS
Demodulation Distortion
Displays power profile against time
Frequency Range
(1)
Less than 2%, at 1 kHz and 30% AM, (CCITT weighted)
Residual AM
1 to 1050 MHz
Less than 1% (300 Hz to 3.4 kHz)
Dynamic Range
FREQUENCY MODULATION
60 dB below spectrum analyzer reference level
Frequency Range
Scale (power)
100 kHz to 1.05 GHz
10 dB/div
Modulation Frequency Range
Scale (time)
10 Hz to 15 kHz
50 μs/division to 5 s/div
Deviation Range
Trigger Level
0 to 75 kHz
Adjustable over full dynamic range +ve or -ve trigger selection
Peak hold facility
Pre-trigger
Resolution
0, 25, 50, 75 or 100% of displayed period
10 Hz below 2 kHz deviation, 1% above 2 kHz deviation
MODULATION METER
Indication
Sensitivity
3 digits and bar chart
Auto-tuned: 5 mW (N-Type)
0.05 mW (Antenna port)
Manual Tuned: -34 dBm (N-Type)
-60 dBm (Antenna port)
Auto or manual control of input attenuator
Accuracy (1)
±5% ±1 digit at 1 kHz modulation frequency
±7.5% ±1 digit for modulation frequencies 50 Hz to 10 kHz
Demodulation Distortion
Audio & Modulation Filters
Less than 2% at 1 kHz and 5 kHz FM, (CCITT weighted)
Lowpass filters
Residual FM
Four independently configurable Lowpass filters LP1, LP2, LP3, LP4
that can be set to any frequency cut off point from 250 Hz to
20000 Hz (excluding the band 1001 Hz to 2999 Hz)
A 50 kHz Lowpass (No filters applied)
Less than 30 Hz (300 Hz to 3.4 kHz)
Demodulation Output Socket
200 mV peak to peak ±10% per 1 kHz deviation
750 μs de-emphasis
Highpass filters
50 Hz Highpass, 300 Hz Highpass
Bandpass filters
Any combination of LP1, LP2, LP3, LP4 and the Highpass filters
AMPLITUDE MODULATION
RF SPECTRUM ANALYZER
Frequency Range
100 kHz to 1.0 GHz
Spans
1 kHz/division to 100 MHz/division in a 1, 2, 5 sequence or continuously variable
Frequency Range
Start - stop facility allows selection of infinitely variable span width
100 kHz to 1.05 GHz
Resolution Bandwidth
Modulation Frequency Range
300 Hz, 3, 30, 300 kHz, 3 MHz
10 Hz to 15 kHz
Reference Level (top of screen)
AM Depth Range
0 to 99% (manually tuned)
0 to 90% below 100 MHz
0 to 80% from 100 to 400 MHz
Peak hold facility
-50 dBm to +52 dBm
0.7 mV to 71 V
Displayed Dynamic Range
80 dB
Noise Floor
Resolution
Typically 75 dB below top of screen
1% AM
On Screen Linearity
Indication
2 digits and bar chart
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Indication
Vertical Resolution
4 digits
0.1 dB on 2 dB/division
0.5 dB on 10 dB/division
Resolution
Level Flatness
0.1 mV below 409 mV
±1 dB ± resolution over 50 MHz span
1 mV above 409 mV
Intermodulation Distortion
Accuracy
Better than 70 dB for two signals at -30 dBm into first mixer
Sweep Speeds
± 5% + resolution 50 Hz to 15 kHz
Output Impedance
10 ms/div to 200 ms/div in a 1, 2, 5 sequence (optimum sweep speed
and bandwidth selected according to span or user selectable)
Span
Resolution
Update
10 kHz
100 kHz
1 MHz
10 MHz
100 MHz
1000 MHz
Bandwidth
300 Hz
3 kHz
30 kHz
300 kHz
300 kHz
3 MHz
(Sweeps/sec)
5
9
9
9
5
5
Marker Indication
Level and frequency or delta marker from center line of screen. Single
marker for frequency and level display. Marker to center frequency. Δ
marker
Features
Simultaneous ‘Look and Listen’ spans 100 kHz, 200 kHz, 500 kHz,
1 MHz
Sensitivity
2 μV
Tracking Generator Offset/Frequency Range
0 to 999 MHz/400 kHz to 1000 MHz
AUDIO GENERATORS
Nominally 5 Ω (minimum load 25 Ω)
Distortion
Less than 0.5% at 1 kHz
Less than 1% from 50 Hz to 15 kHz
Signaling Encoder / Decoder
Sequential tones functions including revert
User defined tones
Encodes and decodes up to 40 tones
CCIR, ZVEI, DZVEI, EEA, EIA or user defined
Any of the tones may be extended
Continuous, burst and single step modes available
Up to two frequency plans may be defined and stored within the
2945B for sequential tones
Any of the standard tone frequency plans may be copied to user
defined and modified
Tone length 20 ms to 20 s
Standard tone frequencies may be selected from a menu
Generation and decoding of DTMF tones
Generation and decoding of DCS (Digitally Coded Squelch)
Generation of POCSAG code CCIR No.1 Rec 584
Bit rates from 400 to 4800 bit/s. Inversion available
AUDIO MONITOR
Demodulated signals and audio signals may be monitored via the internal loudspeaker and the accessory socket output on the front panel.
FREQUENCY
CELLULAR AND TRUNKING
Frequency Range
Test Modes
5 Hz to 33 kHz (sine or square)
Setting
Keyboard entry, delta increment / decrement function and rotary control
Indication
5 digits
Resolution
0.1 Hz below 3.25 kHz
1 Hz above 3.25 kHz
Accuracy
0.01 Hz below 180 Hz, 0.1 Hz above 180 Hz
LEVEL
Level Range
0.1 mV to 4V RMS
Setting
Keyboard entry, delta increment / decrement function and rotary control
Auto test/manual test
Auto Test Programs (dependant upon which system in use)
Call processing only
Call and RF testing
Brief testing
Comprehensive testing
Parametric Auto Test Routines
AF Frequency
FM Deviation
Rx Distortion
Rx Sensitivity
Rx S/N
Tx Distortion
Tx Level
Tx Limiting
Tx Noise
Tx S/N
AF Level
Mod frequency
Rx Expansion
Rx SINAD
Tx Compression
Tx Frequency
Tx Power Level
Tx Mod Level
Tx SINAD
Signaling Auto Test Routines
Registration/Roaming Update PTT On
Place Call
PTT Off
Page Mobile
SAT Deviation
Clear from Land
Handoff
Hook Flash
DTMF Decode
Data Performance
CALIBRATION INTERVAL
SAT Frequency Clear from Mobile
ST Duration
ST Frequency
ST Deviation
DSAT Deviation
2 years
ELECTROMAGNETIC COMPATIBILITY
Conforms with the protection requirements of the EEC Council Directive
89/336/EEC. Complies with the limits specified in the following standards:
FREQUENCY STANDARD
IEC/EN61326-1 : 2006, RF Emission Class B, Immunity Table 3
Internal Frequency Standard (TCXO)
SAFETY
Frequency
Conforms with the requirements of EEC Council Directive 73/23/EEC (
as amended ) and the product safety standard IEC / EN 61010-1 :
2001 + C1 : 2002 + C2 : 2003 for Class 1 portable equipment, for
use in a Pollution Degree 2 environment. The instrument is designed to
be operated from an Installation Category 2 supply.
10 MHz
Temperature Stability
0.5 ppm, 0 to 40°C
ENVIRONMENTAL
0.6 ppm 0 to 50°C
Rated Range of Use
Ageing Rate
0 to 50°C and up to 95% relative humidity at 40°C
Better than 1 ppm per year
Storage and Transport
Warm Up
Temperature
1 minute to specified accuracy
-30°C to +70°C
External Frequency Standard Input
Altitude
Frequency
Up to 2500 m (pressurized freight at 27 kPa differential)
1, 2, 5 and 10 MHz
DIMENSIONS AND WEIGHT
Input Level
Standard Dimensions
Greater than 1 V peak to peak
185 mm (7.3 in) height, 400 mm (15.7 in) width, 460 mm (18.1 in)
deep (including handle, feet and covers)
Input Impedance
Nominally 1 kΩ
Option 30 Dimensions
GENERAL
185 mm (7.3 in) height, 420 mm (16.5 in) width, 565 mm (22.2 in)
deep (including handle, feet and covers)
Keyboard and Display
Weight
Logical color coded keyboard with color high resolution fast LCD
Typically less than 11.4 kg, (<25 lb)
Display Size
10.5 kg (No options) Less than 13 kg (fully equipped)
144 x 80 mm
OPTIONS AND ACCESSORIES
RS-232C
RS-232C interface is provided for printing and remote instrument control
600 Ω MATCHING UNIT (OPTION 1)
INPUT CIRCUIT
Connector
Impedance
9 way female ‘D’ Type
600 Ω
POWER REQUIREMENTS
Return Loss
AC Supply Voltage
100 - 240 V~ / 108 - 118 V~ (Limit 90 - 264 V~/98 - 132 V~)
AC Supply Frequency
50 - 60 Hz / 50 - 400 Hz (Limit 45 - 66 Hz / 45 - 440 Hz)
Maximum AC Power
>21 dB at 1 kHz
Frequency Response
±0.5 dB at 200 Hz to 5 kHz,
±2 dB at 100 Hz to 20 kHz
Accuracy of 1:1 Input:Output Ratio
190 VA
DC Supply Voltage
±1% at 1 kHz ± accuracy of 2945B or 2948B
Maximum Input
11 to 32 V
Maximum DC Power
5 V RMS maximum at 200 Hz to 5 kHz
3 V RMS maximum at 100 Hz to 20 kHz
100 W
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dumps and user programs with SRAM cards. Meets PCMCIA 2 standard. Allows the current date and time to be stored with results to the
memory card and/or printed with a screen dump.
OUTPUT CIRCUIT
Impedance
600 Ω
SSB DEMODULATOR (OPTION 8)
Return Loss
The SSB demodulator allows signals to be demodulated either via the
internal loudspeaker or via the accessory socket. Provides demodulation of SSB signals (upper and lower sideband).
>21 dB at 1 kHz
Frequency Response
Frequency Range
±0.5 dB at 200 Hz to 5 kHz
400 kHz to 1 GHz
±2 dB at 100 Hz to 20 kHz
AF Demodulation Range
Level Accuracy
10 Hz to 15 kHz
±2% at 1 kHz ± accuracy of 2945B or 2948B
Distortion
Output Level
1 mV to 2.5 V RMS across 600 Ω
Typically less than 3% at 1 kHz (300 to 3.4 kHz)
Detection Range
ANALOG SYSTEMS CARD (OPTION 2)
2 μV to 150 W
This option provides automatic testing for cellular, trunked and FM
radios and a BASIC Interpreter for customized tests
HIGH STABILITY INTERNAL FREQUENCY (OCXO) STANDARD (OPTION 3)
Features
Automatic detection of USB or LSB. BFO can be used for tuning of
carrier for AM and FM radios.
Frequency
OCCUPIED BANDWIDTH MEASUREMENT (OPTION 9)
10 MHz
Temperature Stability
Better than 0.05 ppm, 5 to 55°C
Ageing Rate
Frequency Range
1 MHz to 1 GHz
Better than 0.1 ppm, per year, after 1 month continuous use
Warm-up Time
Display Resolution
3 digits
Less than 10 minutes to within 0.2 ppm at 20°C
PARALLEL INTERFACE (OPTION 4)
Allows direct connection of a parallel printer
Additionally provides four software programmable output lines
Printer Port
Accuracy
20%
Bandwidth Measurement Range
3 kHz minimum
Ratio range 90% - 99% selectable in 0.1% steps
Connector
NMT CELLULAR SOFTWARE (OPTION 10)
25 way female D type
Printers Supported
75, 100, 150 dots per inch laser printers, FX 80, FX 100 Epson format
Accessory Port
Connector
9 way female D type
Outputs
4 independently programmable output lines, each one configurable as
a logic line or as a relay contact closure. +5 V supply available
GPIB (OPTION 5)
NMT 450
Benelux
Austria
Malaysia
Saudi 1
Thailand
Tunisia
Poland
Czech
Slovenia
USER DEFINED NMT
NMT 900
NMTF
Spain
Indonesia
Saudi 2
Oman
Hungary
Russia
Bulgaria
Turkey
AMPS CELLULAR SOFTWARE (OPTION 11)
USER DEFINED AMPS
TACS CELLULAR SOFTWARE (OPTION 12)
Capability
For printing, remote instrument control or for programming of user
defined test sequences.
Complies with the following subsets defined
IEEE-488:-
Calculates the bandwidth of a signal displayed on the spectrum analyzer.
SH1, AH1, T6, L4, SR1, RL1, DT0, EI, DC1
MEMORY CARD DRIVE AND REAL TIME CLOCK (OPTION 6)
The memory card facility allows the storage of results, set-ups screen
E-TACS
C-TACS I
J-TACS
USER DEFINED TACS
TACS 2
C-TACS II
N-TACS
MPT 1327 TRUNKING SOFTWARE (OPTION 13)
BAND III
UK WATER
AUTONET
JRC
HONG KONG
AMT
MADEIRA
NZ MPT1327
USER DEFINED MPT
IF OUTPUT (OPTION 31)
NL-TRAXIS
PH-INDO
Allows access to the IF signal from the rear of the instrument (Note:Incorporation of this option replaces the standard demod out capability)
PMRTEST SOFTWARE (OPTION 14)
INTERNAL BATTERY (OPTION 32)
USER DEFINED PMR for FM radios
Type
EDACSTM RADIO TEST SOFTWARE (OPTION 15)
12 V NiMH
Provides Auto/Manual test capability for EDACSTM radios. Up to 4 user
defined variants can be created and stored, each with up to 24 spot
channel frequencies.
Capacity
Performs bit error rate tests to check performance of receiver and
transmitter.
Weight
Typically 60 minutes operation
1.8 kg
EDACSTM REPEATER TEST SOFTWARE (OPTION 16)
Charge Time From Instrument
Provides Auto/Manual test capability for EDACSTM repeaters. Up to four
user defined variants can be created and stored, each with up to 24
spot channel frequencies. A data logging facility is also available to
continuously decode and display data messages from the repeater
under test.
EDACS is an Ericsson GE registered trademark.
4 hours
Temperature Range
5-35 C charge
0-50 C discharge
LTR TRUNKING TEST SOFTWARE (OPTION 18)
Provides Auto/Manual test capability for LTR Trunked radios. (Planned
availability Q3 2006)
Notes
(1)
At low modulation levels the residual AM/FM may become significant.
DEMODULATION FILTERS (OPTION 21)
Provides a range of high selectivity channel filters in Spectrum Analyzer
Look and Listen mode. Shape factor approximates to ETSI requirements.
Bandwidths
5 kHz, 12.5 kHz, 25 kHz, 50 kHz and 300 kHz
POCSAG DECODE (OPTION 22)
Allows off-air decoding of POCSAG messages. Can decode a message
as it is received, or decoding can be triggered from a user selectable
RIC code or fixed message pattern.
Bit Rate
VERSIONS AND ACCESSORIES
When ordering please quote full ordering number information
Ordering
Numbers
Versions
2945B
Communications Service Monitor
2948B
Low Phase-Noise Communications Service Monitor
Option 1
600 Ω Matching Unit
Options
Option 2
Analog Systems Card*
Automatically decodes any standard bit rate up to 4800 bits/s.
Numeric or alphanumeric decoding is provided.
Option 3
High Stability OCXO
Number of received errors is displayed.
Option 4
Parallel Interface †
Option 5
GPIB Interface †
Option 6
Memory Card Drive with real time clock
Option 8
SSB Demodulator
Option 9
Occupied Bandwidth Measurement
CCITT FILTER (OPTION 23)
Allows a CCITT filter to be inserted into either the demodulated audio
path or the audio input path.
CMESS FILTER (OPTION 24)
Allows a CMESS filter to be inserted into either the demodulated audio
path or the audio input path.
Note : Option 2 required when ordering any of the following options
10 to 18
TONE REMOTE (OPTION 26)
Provides configuration screens and generation of Tone Remote control
signals.
PLUS 2 DISTORTION NOTCH FILTERS BOARD (OPTION 29)
The standard instrument is supplied with a 1 kHz notch for Distortion
and Sinad measurements. This option allows the user to carry out
Distortion/Sinad measurements at two additional frequencies. The two
additional notch frequencies can be anywhere in the band 50 Hz to
20 kHz and must be stipulated at the time of ordering.
BAIL ARM/FRONT COVER (OPTION 30)
Provides a bail arm carrying handle and front panel cover and storage
area. The bail arm will also provide additional viewing angles when
mounted on a bench.
For the very latest specifications visit
Option 10
NMT Cellular
Option 11
AMPS Cellular
Option 12
TACS Cellular
Option 13
MPT 1327 trunking
Option 14
PMRTEST
Option 15
EDACSTM Radio Test
Option 16
EDACSTM Repeater Test
Option 18
LTR Trunking
www.aeroflex.com
Option 21
Demodulation Filters*
54431/023
20 dB AF Attenuator (BNC)
Option 22
POCSAG Decode
46884/728
Rack Mounting Kit
Option 23
CCITT Filter ††
54421/001
BNC Telescopic Antenna
Option 24
CMESS Filter ††
46884/650
Serial port to PC control cable (9 way)
Option 26
Tone Remote
46884/649
Serial port to PC control cable (25 way)
Option 29
Plus 2 Distortion Notch Filters board**
46884/648
RS-232 Printer cable (25 way)
Option 30
Bail Arm and Front Panel Stowage cover
59999/170
RF Directional Bridge
Option 31
IF Output Capability
54421/002
(1 to 50 MHz) RF Directional Power Head
Option 32
Internal Battery*
54421/003
(25 to 1000 MHz) RF Directional Power Head
Supplied Accessories
46880/114
Service Manual
AC Supply lead
DC Supply lead
†
CD-Rom Containing Operating Manual
Optional Accessories
44991/145
Microphone with PTT
59000/189
Memory Card (128 k)
59000/375
Memory Card (2 M)
46662/779
Soft carrying case (suitable for all 294x, except early
units being used with external battery
46662/571
Soft carrying/operational case
46662/616
Soft carrying/operational case for use with option 30
54112/163
Hard Transit Case***
Options 23 and 24 cannot be fitted together.
*
Option 2, Option 21 and Option 32:- Any two of these options can be
fitted together, but not all three.
**
Option 29, The standard instrument is supplied with a 1 kHz notch for
Distortion and Sinad measurements. This option allows the user to carry
out Distortion/Sinad measurements at two additional frequencies. The
two additional notch frequencies can be anywhere in the band 50 Hz to
20 kHz and must be stipulated at the time of ordering.
‡
External Battery Packs for previous models are still available using the
following order codes 2945A Battery pack 43113/021 or 2945 Battery
pack 43113/018.
***
Not suitable for use with units fitted with option 30.
CHINA Beijing
Tel: [+86] (10) 6539 1166
Fax: [+86] (10) 6539 1778
FRANCE
Tel: [+33] 1 60 79 96 00
Fax: [+33] 1 60 77 69 22
JAPAN
Tel: [+81] (3) 3500 5591
Fax: [+81] (3) 3500 5592
CHINA Shanghai
Tel: [+86] (21) 5109 5128
Fax: [+86] (21) 5150 6112
GERMANY
Tel: [+49] 8131 2926-0
Fax: [+49] 8131 2926-130
KOREA
Tel: [+82] (2) 3424 2719
Fax: [+82] (2) 3424 8620
CHINA Shenzhen
Tel: [+86] (755) 3301 9358
Tel: [+86] (755) 3301 9356
HONG KONG
Tel: [+852] 2832 7988
Fax: [+852] 2834 5364
SCANDINAVIA
Tel: [+45] 9614 0045
Fax: [+45] 9614 0047
FINLAND
Tel: [+358] (9) 2709 5541
Fax: [+358] (9) 804 2441
INDIA
Tel: [+91] 80 [4] 115 4501
Fax: [+91] 80 [4] 115 4502
SINGAPORE
Tel: [+65] 6873 0991
Fax: [+65] 6873 0992
As we are always seeking to improve our products,
the information in this document gives only a general
indication of the product capacity, performance and
suitability, none of which shall form part of any contract. We reserve the right to make design changes
without notice. All trademarks are acknowledged.
Parent company Aeroflex, Inc. ©Aeroflex 2011.
Options 4 and 5 cannot be fitted together.
††
UK Stevenage
Tel: [+44] (0) 1438 742200
Fax: [+44] (0) 1438 727601
Freephone: 0800 282388
USA
Tel: [+1] (316) 522 4981
Fax: [+1] (316) 522 1360
Toll Free: 800 835 2352
w w w.aeroflex.com
info-test@aeroflex.com
Our passion for performance is defined by three
attributes represented by these three icons:
solution-minded, performance-driven and customer-focused.
Part No. 46891/211, Issue 8, 03/11
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