CX100 ComXpert Handheld Communications Service Monitor

Rugged handheld communications service monitor with a 6 GHz frequency range and a 1-port vector network analyzer for field radio testing.

Weight: 11 lbs (5 kg)
Dimensions: 12 in x 9.5 in x 4.3 in (30.5 cm x 24.1 cm x 10.9 cm)
Display size: 5 in (12.7 cm), diagonal

Datasheet

Overview

The VIAVI CX100 ComXpert is a rugged, handheld analog communications service monitor built for tactical field use in harsh environments. It combines a full-color user interface with a compact form factor intended for field maintenance of radios and networks.

The instrument covers a 1 MHz to 6 GHz frequency range and integrates an RF generator, RF receiver, power meter, frequency counter, spectrum analyzer, audio and demodulation meters, an AF generator and a two-trace oscilloscope. A digital modulation vector signal analyzer supports PSK and QAM formats with EVM, MER and constellation measurements.

A built-in 1-port vector network analyzer provides cable and antenna analysis, with S11 measurements in the frequency and distance domains and Short-Open-Load calibration.

Connectivity

Wireless Personal Area Network (WPAN/BT) and Wi-Fi connectivity options are available, and the CX100 can be operated remotely with the VIAVI Mobile Tech app.

Key Features

Handheld form factor
Rugged design for tactical field use
6 GHz frequency range
1 port Vector Network Analyzer for cable and antenna analysis
Full-color user interface
Wireless Personal Area Network (WPAN/BT) and Wi-Fi connectivity options
VIAVI Mobile Tech application for remote use

Specifications

General

Weight	11 lbs (5 kg)
Dimensions	12 in x 9.5 in x 4.3 in (30.5 cm x 24.1 cm x 10.9 cm)
Display size	5 in (12.7 cm), diagonal

Timebase

Frequency drift	0.05 ppm (-10 to 40ºC) temperature variation <2°C/min, typical
Aging	0.5 ppm/year after first year
Warm-up time	3 minutes: within ±0.1 ppm at 25°C typical

RF Generator

Frequency range	1 MHz to 6 GHz
Frequency resolution	1 Hz
Frequency accuracy	Same as timebase
Level range, T/R Duplex port	-120 dBm to -30 dBm (CW)
Level range, ANT/SWR port	-100 dBm to 0 dBm CW
Level resolution	0.1 dB
Level accuracy, T/R Duplex port	±2.0 dB for level >-100 dBm, ±3.0 dB for level <-100 dBm
Level accuracy, ANT/SWR port	±2.0 dB
VSG bandwidth	8 MHz for IQ playback
VSWR, T/R Duplex port	<1.4 (1 MHz to 6 GHz)
Phase noise	<-105 dBc/Hz at 10 kHz offset, RF < 900 MHz; <-90 dBc/Hz at 10 kHz offset, RF ≥ 900 MHz
Harmonics	-30 dBc
Non-harmonics	-60 dBc typical, output level >-50 dBm
Residual AM	<0.20% RMS post detection BW 15 kHz
Residual FM	<20 Hz RMS post detection BW 3 kHz

Analog Modulation (Generator)

Modulation modes	AM, FM
AM range	0.1% to 100%
AM resolution	0.10%
AM accuracy (internal source)	<±3% of setting from 10% to 90% 20 Hz to 10 kHz rate
FM range	0 to 100 kHz
FM resolution	0.1 Hz
FM accuracy (internal source)	<±3% of setting from 1 kHz to 100 kHz deviation, 20 Hz to 15 kHz rate
Internal modulation sources	2
Source waveforms	Sine
Sine wave range	0 to 100 kHz

RF Receiver

Frequency range	1 MHz to 6 GHz
Maximum input power, ANT/SWR port	+10 dBm de-rated below 50 MHz
Maximum input power, T/R Duplex port	+43 dBm Duty-cycled
VSWR, T/R Duplex port	<1.4 (1 MHz to 6 GHz)
2nd harmonic response	<-30 dB
3rd harmonic response	<-50 dB
Spurious response, 1 MHz to 1 GHz	<-45 dB exceptions may apply
Spurious response, 1 GHz to 6 GHz	<-55 dB exceptions may apply
Phase noise	<-105 dBc/Hz at 10 kHz offset, RF < 900 MHz; <-90 dBc/Hz at 10 kHz offset, RF ≥ 900 MHz
Dynamic range at 900 MHz	110 dB (0 dB attenuation), 107 dB (preamp) 2/3 * (TOI-DANL)
Dynamic range at 1000 MHz	107 dB (0 dB attenuation), 106 dB (preamp) 2/3 * (TOI-DANL)
TOI	>+19 dBm (0 dB attenuation), >-1 dB (preamp)
DANL at 900 MHz	<-144 dBm (0 dB attenuation), <-162 dBm (preamp)
DANL at 1000 MHz	<-138 dBm (0 dB attenuation), <-158 dBm (preamp)
Analog sensitivity	10 dB SINAD for -100 dBm input level
RF bandpass filters (IF filters)	5 kHz, 6.25 kHz, 8.33 kHz, 10 kHz, 12.5 kHz, 25 kHz, 30 kHz, 100 kHz, 300 kHz

Power Meter

Frequency range	1 MHz to 6 GHz
Level range	Up to 43 dBm into T/R Duplex Port, (20 mW to 20 W)
Resolution	1% of full scale or 1 mW
Accuracy, T/R Duplex port	±10%

RF Frequency Counter / RF Frequency Meter

Frequency range	1 MHz to 6 GHz
Resolution	1 Hz
Accuracy	Frequency Reference
Input level range, T/R Duplex port	-50 dBm to 43 dBm
Input level range, ANT/SWR port	-80 dBm to +10 dBm (-80 dBm to -20 dBm w/pre-amp and over-the-air)

Analog Modulation Measurements

FM measurement range	0 to 100 kHz
FM accuracy	±2%; ±1.0% from 1.5 kHz to 3 kHz at 1 kHz rate
FM distortion	<1%, 1 kHz to 5 kHz deviation (50 Hz to 3 kHz rate); <0.5%, 1.5 kHz to 3 kHz deviation (1 kHz rate)
Residual FM	<5 Hz rms (300 to 3000 Hz)
FM AF frequency range	10 Hz to 20 kHz
AM measurement range	0 to 100%
AM accuracy	<1%
AM frequency response	±0.1 dB 50 Hz to 6 kHz; ±0.05 dB 50 Hz to 6 kHz rate for Subscriber testing
AM distortion	<1%, 1 to 5 kHz deviation (50 Hz to 3 kHz rate); <0.5%, 1.5 to 3 kHz deviation (1 kHz rate)
AM AF frequency range	10 Hz to 20 kHz
Residual AM	<0.1% (30 MHz to 3 GHz)

Audio and Demodulation Meters

Distortion meter frequency range	DC to 100 kHz (audio in) Limited by IF bandwidth (demodulation)
Distortion meter measurement range	0 to 100%
Distortion meter accuracy	<3% of reading +0.1% distortion, 1% to 20%
SINAD meter frequency range	DC to 100 kHz (audio in) Limited by IF bandwidth (demodulation)
SINAD meter measurement range	0 to 63 dB
SINAD meter accuracy	<1 dB at 12 dB SINAD
S/N meter frequency range	DC to 100 kHz (audio in) Limited by IF bandwidth (demodulation)
S/N meter measurement range	0 to 63 dB
S/N meter accuracy	<1 dB
AF counter frequency range	DC to 100 kHz (audio in) Limited by IF bandwidth (demodulation)
AF counter accuracy	Timebase +0.1 Hz

Audio Analyzer

Frequency range	DC to 100 kHz (audio in) Limited by IF bandwidth (demodulation)
FFT windows	Blackman-Harris
Level range	2 mV to 20 Vpk
DC accuracy	±1% of reading (>200 mV), ±2 mV (<200 mV)
AC accuracy	±2% of reading (200 mV to 2 V, 20 Hz to 20 kHz), ±5% (200 mV to 20 V, 20 Hz to 100 kHz) typical
THD+Noise	<80 dB (20 Hz to 20 kHz)
Lowpass filters	300 Hz, 3 kHz, 3.4 kHz, 5 kHz, 15 kHz, 20 kHz
Highpass filters	20 Hz, 50 Hz, 300 Hz
Other filters	C-MSG, CCITT

Spectrum Analyzer

Frequency range	1 MHz to 6 GHz
Span range	1 kHz/Div, full span and zero span
Span accuracy	±5% of span width
Vertical scale	10 dB/div and 2 dB/div; All available ranges in dB/div: 1, 2, 5, 10, 20
Vertical range	80 dB
RBW range	100 Hz to 5 MHz
VBW range	100 Hz to 5 MHz
Sweep time range	1 μs to 100 s
Detector	Normal, positive peak, negative peak, sample, Average (RMS)

Digital Modulation (Vector Signal Analyzer)

Modulation types	BPSK, QPSK, 8-PSK, 16-PSK, 4-QAM, 16-QAM, 64-QAM
Symbol rate	≤ 3.75MSymbol/s
Oversampling	≥ 4 Product of Symbol rate and oversampling ≤ 15Msample/s
Number of symbols	≤ 16,000
Reference filter	Raised Cosine, Square Root Raised Cosine; Roll-off Factor < 1; Filter Length 4-30
Measurement filter	Raised Cosine, Square Root Raised Cosine; Roll-off Factor < 1; Filter Length 8-40
Measurement input level range, T/R Duplex port	-50 dBm to 43 dBm
Measurement input level range, ANT/SWR port	-80 dBm to +10 dBm (-80 dBm to -20 dBm w/pre-amp and over-the-air)
Measurements	Signal Power, EVM, Frequency Error, MER, Symbol Error Rate, IQ Offset, Gain Imbalance, IQ Imbalance, rho
EVM residual	2% typical for QPSK 10MHz BW @ 1GHz input level -50dBm ANT/SWR Port, Preamp Enabled
Graphical display	Constellation plot

AF Generator

Output impedance	<4 Ω
Max output current	20 mA
Frequency range	DC to 100 kHz (±0.5 dB), 20 Hz to 20 kHz (±0.1 dB)
Frequency resolution	0.1 Hz
Frequency accuracy	Timebase +0.5 Hz
Level range	0 to ±8 Vpk into 600 Ω, 4 Vpk into 50 Ω
DC accuracy	±1% (>200 mV), ±2 mV (<200 mV)
AC accuracy	±2% (>200 mV, 20 Hz to 20 kHz), ±5% (>2 mV, 20 Hz to 100 kHz) typical
THD+N	<80 dB (20 Hz to 20 kHz)

Oscilloscope

Traces	2
Markers	2
Sweep per div	20 µs to 1 s/div
Bandwidth	100 kHz Audio Input
Input accuracy	<5%
Trigger modes	Single, Normal, Automatic, Free run

Vector Network Analyzer

Frequency range	1 MHz to 6 GHz
Frequency resolution	0.1 Hz
Frequency accuracy	Same as timebase
Test port power	+5 dBm
Dynamic range	90 dB
Measurement parameters	S11
Graph type	Log Magnitude (dB), SWR (Linear)
Domains	Frequency, Distance
Calibration type	Full S11
Calibration method	Short-Open-Load
Corrected source match	>40 dB (<900 MHz) (95th percentile) max 35 dB; >30 dB (≥900 MHz) (80th percentile) max 20 dB
Corrected reflection tracking	±0.5 dB typical
Maximum distance (distance domain)	100 m (328 ft) or 40 dB Return Loss whichever comes first for a 6 GHz span
Distance domain measurement display	Return Loss, VSWR
Distance domain measurement format	dB, VSWR

Environmental/Physical

Temperature, not operating	-20°C to +60°C
Temperature, operating	-10°C to +40°C
Relative humidity	95% RH (noncondensing)
Altitude	4600 m
Vibration	MIL-PRF-28800F Class 2
Shock, functional	MIL-PRF-28800F Class 2
Bench handling	MIL-PRF-28800F Class 2
Transit drop	MIL-PRF-28800F Class 2