VIAVI CX700 ComXpert Radio Test System for Analog, Digital and Software Defined Radios

Automated radio test system that covers 9 kHz to 6 GHz with 100 MHz instantaneous bandwidth, for commercial, tactical and military radios.

Frequency range: 100 kHz to 3 GHz
Frequency range: 3 GHz to 6 GHz
Frequency accuracy: Same as timebase
Frequency resolution: 0.1 Hz

Datasheet

Overview

The VIAVI CX700 ComXpert Radio Test System is an automated radio communications test solution for commercial, tactical and military applications in production, depot-level and field environments. It follows the earlier TS-4317 and 7200B models and is an SCA-compliant modular platform that combines RF test functions, a graphical user interface and automation capability.

The CX700 tests analog and digital frequency-hopping radios as well as software defined radios. In addition to its RF generator and receiver, it includes a 2-channel oscilloscope, a digital multimeter (DMM), real-time I/Q record and playback, and a frequency hop burst power meter.

The instrument covers frequencies up to 6 GHz with 100 MHz instantaneous bandwidth. Meters use pass/fail color coding, and an Auto-Test framework supports automated test sequences. The user interface uses multiple tabs, similar to an internet browser, and the unit has a collapsible high-resolution touch-screen display with a keyboard and trackpad.

Radio interface and packaging

A fully programmable 168-pin zero insertion force (ZIF) connector gives access to the DMM, oscilloscope, Ethernet, RX/TX, USB, RS-232, RS-422, GPIO and 5 V / 3.3 V TTL in/out signals, and is compatible with legacy VIAVI test sets. A 55-pin MIL circular connector provides additional I/O. The packaging complies with MIL-PRF-28800F Class 3, so the CX700 can be used in the laboratory and in the field. A rack mount option is available.

Key Features

Receiver frequency range from 9 kHz to 6 GHz
100 MHz instantaneous bandwidth
Standard AM/FM/PM/SSB modulation and demodulation modes
Power meter, spectrum analyzer, audio generator, distortion meter, SINAD meter, audio analyzer, frequency counter and frequency reference
2-channel oscilloscope and digital multimeter (DMM)
Real-time I/Q record and playback
Frequency hop burst power meter
Fully programmable 168-pin zero insertion force (ZIF) connector with DMM, scope, Ethernet, RX/TX, USB, RS-232, RS-422, GPIO, and 5V and 3.3V TTL in/out
Collapsible high resolution touch-screen display and keyboard/trackpad
Multiple tab user interface, similar to an internet browser
Intelligent color-coded meters for at-a-glance test verification
Auto-Test framework for automated testing
SCA-compliant modular platform
MIL-PRF-28800F Class 3 packaging with rack mount option available

Specifications

RF Generator

Frequency range CX700	100 kHz to 3 GHz
Frequency range CX700-F6GHZ	3 GHz to 6 GHz
Frequency accuracy	Same as timebase
Frequency resolution	0.1 Hz
T/R port output level range	-130 dBm to -30 dBm (>1 MHz); -140 dBm to -30 dBm (>10 MHz); -130 dBm to -30 dBm (>1 GHz)
GEN port output level range	-120 dBm to +17 dBm (>1 MHz); -130 dBm to +17 dBm (>10 MHz); -120 dBm to +17 dBm (>1 GHz)
T/R port output level accuracy	±1 dB >1 MHz
GEN port output level accuracy	±1 dB (> -120 dBm); ±2 dB (≤-120 dBm & ≥-130 dBm) ±1 dB typical
Output level resolution	0.1 dB
Maximum bandwidth	100 MHz IBW
VSWR, T/R port	≤1.1 (1 MHz to 1 GHz); <1.2 (1 GHz to 6 GHz)
VSWR, GEN port	≤1.4 (1 MHz to 1 GHz); <1.5 (1 GHz to 6 GHz)
Phase noise	-112 dBc/Hz at 10 kHz offset at 500 MHz
Harmonics, GEN port	-35 dBc for output level <+10 dBm
Harmonics, T/R port	-35 dBc for output level <-30 dBm
Non-harmonics	<-50 dBc (<2.8 GHz); <-45 dBc (>2.8 GHz)
Residual AM	<0.1% rms for frequency ≤1 GHz & >1 MHz (post-detection BW: 300 Hz to 3 kHz)
Residual FM	<3 Hz rms 300 Hz to 3 kHz for frequency < 1 GHz & > 1 MHz (post-detection BW: 300 Hz to 3 kHz)
I/Q file modulation	Allows user to run arbitrary waveforms as modulation source; browse and load I/Q file

Analog Modulation

Modulation modes	AM, FM, PM, SSB
FM range	Off, 0 to ± 100 kHz
FM accuracy	< ±2.5% of setting
FM rate	20 Hz to 20 kHz, useable to 100 kHz
AM range	0% to 100%
AM accuracy	< ±5% of setting
PM range	Off, 0 radians to 6.3 radians
PM accuracy	±2.5% of setting
SSB range	300 Hz to 3 kHz
SSB carrier suppression	>70 dB
SSB sideband suppression	>60 dB
Modulation waveforms	Sine, Square, Triangle, Ramp
Number of internal modulation sources	3
Internal source sine wave range	DC to 100 kHz
Internal source square wave range	20 Hz to 20 kHz
AM distortion	<1% (700 Hz to 1.1 kHz); <1.5% (100 Hz to 6.0 kHz); <2.5% (> 6.0 kHz to 10.0 kHz) 30% to 70% modulation
FM distortion	<0.7% (700 Hz to 1.1 kHz); <1% (20 Hz to 20 kHz)
PM distortion	<2% (1 kHz rate, ≥ 0.3 radians)

RF Receiver

Frequency range CX700	9 kHz to 3 GHz
Frequency range CX700-F6GHZ	3 GHz to 6 GHz
Frequency resolution	1 Hz
Maximum input level, ANT port	+20 dBm max preamp off and frequency >1 MHz
Maximum input level, T/R port	50 W continuous at 50°C ambient; 50-150 W, 30 s on, 2 min off at 50°C ambient; 150-200 W, 15 s on, 2 min off at 50°C ambient
Spurious response, input related	≤-65 dBc typical
Spurious response, non-input related	≤-95 dBm typical
Phase noise	-112 dBc/Hz at 10 kHz offset at 500 MHz; -110 dBc/Hz at 10 kHz offset at 1000 MHz
Dynamic range	2/3 * (TOI-DANL) = 109 dB
TOI	+20 dBm (0 atten), >+1 dBm (preamp) 1 MHz to 1 GHz
DANL	<-144 dBm (0 atten), <-162 dBm (preamp) 1 Hz RBW @ 1 GHz
Analog bandwidth	100 MHz (wideband VSA), 8 MHz (narrowband)
IF bandwidth	5 kHz, 6.25 kHz, 8.33 kHz, 10 kHz, 12.5 kHz, 25 kHz, 30 kHz, 100 kHz, 300 kHz

Analog Demodulation Measurements

FM deviation range	0 Hz to 100 kHz
FM modulation rate range	10 Hz to 40 kHz, useable to 100 kHz
FM accuracy	±2.0%, ±1.0% (rate 1.5 kHz to 3 kHz)
FM detector modes	RMS, RMS*√2, +PK, -PK, ±PK/2
Residual FM	≤3 Hz (300 Hz to 3 kHz) frequency <1 GHz
AM depth	0% to 100%
AM modulation rate range	10 Hz to 20 kHz
Residual AM	<0.1% (300 Hz to 3 kHz)
PM range	0 radians to 10 radians
PM rate	10 Hz to 20 kHz
PM resolution	0.01 rad for ≤ 5 rad; 0.1 rad for > 5 rad
SSB modes	SSB-USB, SSB-LSB
SSB measurements	Frequency error, Power (RMS), Power (PEP)

Audio Generator and Audio Input

AF output impedance	<4 Ω
AF max output current	100 mA
AF generator frequency range	DC to 100 kHz (sine only)
AF generator level range	0 to ±4 V pk into 50 Ω; 0 to ±7 V pk into 150 Ω; 0 to ±8 V pk into 600 Ω
AF generator THD+N	<-75 dB for frequency 1 kHz and level 1 Vrms
Audio input frequency	DC to 100 kHz
Audio input impedance	150 Ω (UUT-A), 300 Ω, 600 Ω, 100 kΩ single ended, ±1 % shunted by ≤300 pF, 200 kΩ differential, ±8 % max input voltage 30 VRMS; max input power 1.5 W
Audio input level range	50 mVrms to 30 Vrms
Audio analyzer FFT windows	Flat top, rectangular, Hamming, Hann, Blackman-Harris
Audio filters, lowpass	300 Hz, 3 kHz, 3.4 kHz, 5 kHz, 15 kHz, 20 kHz
Audio filters, highpass	20 Hz, 50 Hz, 300 Hz
Audio filters, other	C-MSG, CCITT, A-Weighted, C-Weighted
De-emphasis	75 µs, 750 µs

Power Meters

Power meter frequency range	100 kHz to 3 GHz (CX700); 3 GHz to 6 GHz (CX700-F6GHZ)
Power meter measurement modes	RMS, average RMS, minimum, maximum
Power meter input range, T/R port	-20 dBm to +53 dBm
Power meter input range, ANT port	-60 dBm to +10 dBm
Power meter accuracy, T/R port	>0.02 mW level, ± 10%; ±0.4 dB (frequency <1 GHz & >1 MHz), ±0.5 dB (elsewhere)
Power meter accuracy, ANT port	>-80 dBm, ±0.6 dB (frequency <1 GHz & >1 MHz), ±0.9 dB (elsewhere)
Power meter units	Watts, mWatts, and dBm (absolute and relative)
Burst power meter input range	1 to 100%
Burst power meter accuracy	±0.2% Power Envelope Drop Out 10 - 90% duty cycle, 1 Hz to 10kHz, <20% drop out

RF Error, Audio and Demodulation Meters

RF error meter range	0 Hz to ±100.0 kHz (in 4 decade ranges)
RF error meter input level range	T/R Port -20 to 51 dBm; ANT Port -60 to +17 dBm (-80 to -20 dBm w/pre-amp)
AF counter frequency range	DC to 100 kHz
AF level meter input range	20 mVrms to 30 Vrms for Hi-Z / 600 Ω Impedance; 20 mVrms to 7 Vrms for 150 Ω / 300 Ω Impedance
SINAD meter measurement range	0 dB to 63 dB frequency range 50 Hz to 10 kHz
SINAD meter accuracy	±1 dB ±1 count
Distortion meter measurement range	0% to 100% frequency range 50 Hz to 10 kHz
Distortion meter accuracy	±3% of reading + 0.1% distortion for 1% to 20%
S/N meter measurement range	0 to 63 dB frequency range 50 Hz to 10 kHz; accuracy <1 dB

Digital Modulation Analysis

EVM range	0 - 100% resolution 0.01%
EVM input level	T/R Port: >-20 dBm; ANT Port: >-60 dBm
8PSK modulation residual	Residual (floor) <1.5% rms for frequency 1 GHz and IBW 10 MHz
16QAM modulation residual	Residual (floor) < 1.2% rms for frequency 1 GHz and IBW 10 MHz
FSK meter range	1 kHz - 10 kHz accuracy ±25 Hz
Modulation fidelity range	0 - 30%

Spectrum Analyzer

Frequency range	9 kHz to 3 GHz (CX700); 3 GHz to 6 GHz (CX700-F6GHZ)
Span modes	Center / Span and Zero Span and Full
Span range	1 kHz/div to 100 MHz/Div plus Zero span & full span 10 divisions in a 1-2-5 sequence
DANL	-162 dBm from 1MHz to 1100 MHz; -163 dBm from 1100 MHz to 2300 MHz; -160 dBm from 1100 MHz to 4500 MHz; -158 dBm from 4500 MHz to 6000 MHz dBm/Hz, Ant Port, Receiver preamp on (-40 dBm), 1 Hz RBW, averaging on, 50Ω termination
RBW	25 Hz to 6 MHz; 1 Hz to 50 kHz in Channel analyzer
VBW	100 Hz to 5 MHz
Sweep time range	0.4 ms to 1000 s
Spurious free dynamic range	≥80 dB
Display range	1 dB/div to 20 dB/div with 10 divisions
FFT / channel analyzer span	2 kHz to 8 MHz IF bandwidth 10 MHz; RBW 1 Hz to 50 kHz
Zero span analyzer sweep time range	24 µs to 200 s
Tracking generator output ports	GEN, T/R level range and accuracy same as RF Generator

Oscilloscope

Channels	2
Internal sample clock frequency	40 Ms/s sampling clock, 1 uSec/Div to 1 Sec/Div
Trigger modes	Automatic, Normal, Single Shot sources CH1, CH2, External
Horizontal sweep per div	20 µs to 1 s/div
Vertical range	0.1 mV/div to 20 V/div
Bandwidth	100 kHz The product web page describes a 2-channel 125 MHz oscilloscope; the datasheet value is given here
Input range	20 mV to 30 Vrms (42.4 Vpk)
Input impedance	1 MΩ single ended, ±1 % shunted by ≤ 300 pF, 200 kΩ differential, ±8 % max input voltage 30 VRMS

I/Q Recorder

Sample length	4 Msamples memory or file on SSD, limited by SSD free space
Sample rate	Variable to support up to 100 MHz of analog bandwidth

Digital Multimeter

DC voltage range	0.1 to 300 V scales 20 mV, 200 mV, 2 V, 20 V, 200 V, 2000 V
DC voltage accuracy	±1% full scale (DC), ±1 count
DC current range	20 mA, 200 mA, 2 A, 20 A (with shunt)
Resistance range	200 Ω to 200 M Ω accuracy ±1% Ω
AC voltage accuracy	±5% full scale, ±1 count (50 Hz to 10 kHz)
AC current range	10 mA to 2 A, 10 A (with external shunt)
Resolution	5 1/2 digits The product web page describes a 6 ½ digit DMM; the datasheet value is given here

Timebase and Frequency Reference

Timebase accuracy	±0.01 ppm max (0°C to 70°C)
Aging	±0.05 ppm/year max; ±0.1 ppm/year max (first year)
External reference	10 MHz
Frequency reference input	100 MHz duty cycle 45 - 55%
Frequency reference output	10 MHz / 100 MHz selectable; 3.3 V CMOS into 50 Ω
GNSS timing (SMA) constellations	GPS (L1), GLONASS (L1, FDMA), Galileo (E1)
GNSS 1 PPS accuracy	UTC ±10 ns 1-sigma, 1 satellite in track 24 hours

Interfaces

Serial ports	2x RS-232 (422, 485) synchronous + 2x RS-232 (422, 485) asynchronous ports on UUT-(A/B) connectors
Ethernet	2x RJ45 1GbE on RIM Tray + 1x RJ45 1GbE back of the chassis + 1x 1GbE on the ZIF tied to first Ethernet device. 1x additional 1GbE on UUT-A tied to the second Ethernet device (Different IP stacks)
UUT-A	168-pin ZIF connector compatible with legacy VIAVI test sets
UUT-B	55-pin MIL circular connector with additional I/Os for future-proofing
USB	3.1 ports (x2 type A) on the rear of the unit, USB 2.0 ports (x2) on UUT-A connector, USB 2.0 ports (x2 type A) on the RIM tray front panel, USB 3.1 ports (x2 type A) on the front of the chassis
Removable storage	M.2 SSD
Video/monitor	Display Port
External trigger input (BNC)	Max input level ±10 V, input impedance 1 kΩ minimum threshold (programmable) 250 mV
External trigger output (BNC)	3.3 V CMOS output load 50 Ω

Power

AC operating voltage range	100 - 300 VAC
AC input frequency range	47 - 66 Hz
Efficiency (typical)	91 - 95%
Holdup time	20 ms
Built-in power supply Output A CX700-PS, CX700-PS-NOKVM	5-40 V DC, 20 A max, available on UUT-A connector
Built-in power supply Output B CX700-PS, CX700-PS-NOKVM	2-28 V DC, 5A max, available on UUT-B connector
Built-in power supply Output C CX700-PS, CX700-PS-NOKVM	5 V DC, 4 A Max, available on UUT-B connector

Environmental/Physical

Height	24.4 cm (9.6 in)
Width	46.2 cm (18.2 in)
Depth	49.0 cm (19.3 in)
Weight	34.3 kg (76 lbs) test set only, additional weight for accessories and case
Operating temperature	0°C to 50°C
Non-operating temperature	-40°C to 71°C
Relative humidity	95%±5% from 10°C to 30°C; 75%±5% from 31°C to 40°C; 45%±5% from 41°C to 50°C
Altitude	4600 meters

Compliance

Vibration	Random 5-500 Hz per Table 3 of MIL-PRF-28800F Class 3
Shock, functional	30 G half-sine shock pulses per 4.5.5.4.1 of MIL-PRF-28800F Class 3
Bench handling	MIL-PRF-28800F Class 3
Transit drop	MIL-PRF-28800F Class 3
EMC	MIL-PRF-28800F, EN 61326-1 Class A (CE), EN 61000-3-2, EN 61000-3-3
Safety standards	UL 61010-1, EN 61010-1, EN 61010-2-30, CSA C22.2 No. 61010-1-12, ETSI EN 301 489-1, ETSI EN 301 489-19, FCC Part 15 Subpart B, ICES-003

Specifications are taken from the manufacturer's documentation. See the datasheet for complete and current values.

Applications

Tactical radio testing
Military radio testing
Commercial radio communications testing
Analog and digital frequency-hopping radio testing
Software defined radio testing
Production test
Depot-level maintenance
Field testing

Options & Accessories

Option	Description
CX700-F6GHZ	3 GHz to 6 GHz frequency range — Extends RF generator, receiver, spectrum analyzer and meter frequency coverage to 3 GHz to 6 GHz
CX700-PS	Built-in Power Supply with 3 Outputs — Output A 5-40 V DC on UUT-A; Outputs B and C on UUT-B
CX700-PS-NOKVM	Built-in Power Supply with 3 Outputs (NOKVM)