CX300 ComXpert Communications Service Monitor

Portable communications service monitor for analog and digital radio testing from 100 kHz to 6 GHz, with optional Auto-Test alignment.

Display size: 10 in (25.4 cm)

Datasheet

Overview

The VIAVI CX300 ComXpert is a communications service monitor for radio technicians. It comes in a small, ruggedized, field-portable form factor and supports both analog and digital radio testing.

The CX300 has a large color touchscreen. Its user interface uses multiple tabs, much like an internet browser, so the technician can switch between test setups without reloading settings. Color-coded meters look like swept analog meters and also show a digital readout. Individual and overall pass/fail flags support go/no-go testing.

The VIAVI Auto-Test applications are available as an option. They run automated test and alignment routines that follow each radio OEM's maintenance specifications.

Data management and remote control

Test results from manual and automated tests can be saved and managed with VIAVI StrataSync, a cloud-based system for asset configuration and test data management. The CX300's wireless connectivity lets it upload results to the cloud and receive software updates. The free VIAVI Smart Access Anywhere app, available for Windows, Android and iOS, provides full remote control of the test set.

Accuracy	0.02 ppm 0°C to 50°C
Aging	±0.1 ppm/year
Warm-up time	3 minutes: within ±0.01 ppm
Accuracy with GPS	±25 ppb (GPS Lock); ±50 ppb (Hold over 72 hours)
External reference	10 MHz

Frequency range	100 kHz to 3GHz Standard
Frequency range CX300-F6GHz	3 GHz to 6 GHz
Frequency resolution	1 Hz
Output level, RF Duplex Port	-140 dBm to -30 dBm (10 MHz to 1 GHz); -37 dBm for AM and Complex modulation
Output level, RF Output Port	-130 dBm to +17 dBm (10 MHz to 1 GHz); +10 dBm for AM and Complex modulation
Output level resolution	0.1 dB
Output level accuracy	±1.0 dB (output level >-120 dBm, 1 MHz to 6 GHz); ±2.0 dB (output level >-130 dBm, 1 MHz to 6 GHz); ±1.0 dB typical
Bandwidth	100 MHz
VSWR, RF Duplex Port	<1.1 (1 MHz to 1 GHz); <1.2 (1 GHz to 6 GHz)
VSWR, RF Output 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; -110 dBc/Hz at 10 kHz offset at 1000 MHz Frequency ≥1 MHz and Level ≤+10 dBm
Harmonics	-35 dBc Frequency ≥1 MHz and Level ≤+10 dBm
Non-harmonics	-45 dBc Frequency ≥1 MHz and Level ≤+10 dBm
Residual AM	<0.1% RMS
Residual FM	<3 Hz RMS 300 Hz to 3 kHz

Modes	AM, FM, PM, SSB
Modulation frequency range	20 Hz to 20 kHz
Distortion	<1% THD
AM range	0% to 100% Resolution 0.1%; accuracy (internal source) ≤±5% of settings
FM range	0 Hz to 100 kHz Resolution 1 Hz; accuracy (internal source) ≤±2.5% of setting with frequency response of ±0.5 dB 20 Hz to 10 kHz
PM range	0 rad to 6.3 rad Resolution 0.1 rad; accuracy <±2.5% of setting with frequency response of ±0.5 dB 20 Hz to 10 kHz
SSB carrier suppression	>70 dB
SSB sideband suppression	>60 dB
Number of internal modulation sources	3
Source waveforms	Sine, Square, Triangle, Ramp, DTMF, DCS, CTCSS, Tone Remote, Tone Sequential, Two-Tone Sequential
CTCSS tone	Tone 1 (67) to Tone 50 (254.1) Hz

Frequency range	9 kHz to 3 GHz Standard
Frequency range CX300-F6GHz	3 GHz to 6 GHz
Maximum input level, RF Input Port	+27 dBm (500 mW) max preamp and frequency ≥1 MHz; +13 dBm (20 mW) max preamp on or frequency <1 MHz
Maximum input level, RF Duplex Port	+47 dBm (50 Watts) continuous, +<35°C; +51 dBm (125 Watts) Cyclical (Max “ON” of 30 sec and Min “OFF” for 90 sec) for power levels >50 Watts Shutdown: alarm sounds (no auto shutdown)
VSWR, RF Duplex Port	≤1.2 (100 kHz to 1 GHz)
VSWR, RF Input Port	≤1.6 (100 kHz to 1 GHz) with 10 dB input attenuation
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	900 MHz: <-146 dBm (0 dB attenuation), -162 dBm (preamp); 1000 MHz: <-142 dBm (0 dB attenuation), <-160 dBm (preamp)
Analog sensitivity	10 dB SINAD, <-105 dBm with preamp 300 Hz to 3 kHz audio filter, 2.5 kHz FM deviation, 12.5 kHz IF BW
Bandwidth	100 MHz (wideband VSA), 8 MHz (narrowband)
RF bandpass filters (IF filters)	250 Hz, 3 kHz, 5 kHz, 6.25 kHz, 8.33 kHz, 10 kHz, 12.5 kHz, 25 kHz, 30 kHz, 50 kHz, 100 kHz, 230 kHz, 300 kHz, 1 MHz, 3 MHz, 5 MHz, 10 MHz, 20 MHz

Frequency range	100 kHz to 3 GHz Standard; 3 GHz to 6 GHz with CX300-F6GHz
Measurement modes	RMS, average RMS, minimum, maximum
Level, RF Duplex Port	-20 dBm to +51 dBm
Level, RF Input Port	-60 dBm to +10 dBm
Accuracy, RF Duplex Port	±0.4 dB (1 MHz to 1 GHz); ±0.6 dB (1 GHz to 6 GHz) Accuracy after normalizing at the measurement frequency
Accuracy, RF Input Port	±0.8 dB (1 MHz to 1 GHz), ±0.9 dB (1 GHz to 6 GHz) Accuracy after normalizing at the measurement frequency

Frequency range	100 kHz to 3 GHz Standard; 3 GHz to 6 GHz with CX300-F6GHz
Resolution	1 Hz
Input level range, RF Duplex Port	-20 dBm to 51 dBm
Input level range, RF Input Port	-60 dBm to +17 dBm (-80 dBm to -20 dBm w/pre-amp)

FM modes	RMS, +PK, -PK, ±PK/2
FM measurement range	0 Hz to 75 kHz
FM accuracy	±1.0% for rate ≥1.5 kHz and ≤3 kHz; ±2.0% otherwise
Residual FM	≤3 Hz (300 Hz to 3 kHz) and frequency <1 GHz
AM measurement range	0% to 100%
AF frequency range	10 Hz to 20 kHz
PM range	0 radians to 6.3 radians Resolution 0.01 rad for ≤5 rad, 0.1 rad for >5 rad
SSB modes	SSB-USB, SSB-LSB

SINAD meter range	0 dB to 63 dB 50 Hz to 10 kHz; accuracy <±1 dB
Distortion meter range	0% to 100% 50 Hz to 10 kHz
AF tones analyzer modes	DTMF, DCS, CTCSS, Two-Tone, Tone Sequential, Tone Remote
Audio level meter input impedance	100 K Ω, 600 Ω, 300 Ω
Audio analyzer frequency range	DC to 100 kHz
Audio filters, lowpass	300 Hz, 3 kHz, 3.4 kHz, 5 kHz, 15 kHz, 20 kHz, 40 kHz, TIA 3 kHz, TIA 15 kHz
Audio filters, highpass	50 Hz, 300 Hz, TIA 50 Hz, TIA 300 Hz
Audio filters, other	C-MSG, CCITT

Span	2 kHz to 8 MHz
IF bandwidth	10 MHz
RBW	1 Hz to 50 kHz
FFT windows	Flat top, rectangular, Hamming, Hanning, Blackman-Harris

Output impedance	<4 Ω
Max output current	100 mA
Frequency range	0 Hz to 100 kHz Resolution 0.1 Hz
Level range	0 Vpk to ±8 Vpk into 600 Ω
THD+N	<-75 dB for frequency 1 kHz and level 1 Vrms

Traces / markers	1 / 6
Horizontal sweep per div	1 µs to 100 ms/div Accuracy <2%
Vertical range	1 mV/div to 20 V/div Accuracy <5%
Bandwidth	20 kHz
Input range	20 mV to 30 Vrms (42.4 Vpk)
Coupling	AC, DC
Trigger modes	Single, Normal, Automatic, Free run

Modes	P25, P25 Phase 2, DMR, NXDN, TETRA
P25 modulation fidelity accuracy	<5% of reading (2.5% to 12%)
P25 symbol deviation accuracy	±1%
DMR FSK error range	0 to 20% Resolution 0.01%; accuracy <5% of reading (2.5 to 10%)
DMR symbol deviation range	1500 Hz to 2350 Hz Accuracy ±10 Hz (1745 to 2140 Hz)
DMR frequency error range	±4000 Hz Resolution 0.01 Hz
DMR UUT TX/RX bit error rate range	0 to 20% Resolution 0.1%
DMR protocol decode	Color Code, Call ID, Unit ID

Frequency range	1 MHz to 6 GHz Resolution 0.1 Hz
Test port power, Port 1	+10 dBm
Dynamic range	90 dB
Parameters	S11, S21
Measurements	Magnitude, VSWR, Distance to Fault, Cable Loss, Insertion Loss, Group Delay, Phase, S-Parameters Real and Imaginary
Calibration method	Short-Open-Load, Thru
Maximum distance	1000 ft (305 m)

Weight	15 lbs (6.8 kg)
Temperature, operating	0°C to 50°C
Temperature, not operating	-40°C to +71°C Battery must not be subjected to temperatures below -20°C, nor above +60°C
Relative humidity	95% RH (non-condensing)
Altitude	4600 m
Vibration, shock, bench handling, transit drop	MIL-PRF-28800F Class 3

Type	Lithium Ion, 14.4 V, 6.8 Ah
Operating time	2.3 hours typical with 2 batteries
Battery charging limits	0°C to 45°C (32°F to 113°F) ≤85% RH

EMC	EMC IEC/EN 61326-1:2013, CISPR11:2009 +A1:2010
Safety	EN 61010-1, 3rd Edition

CX300 ComXpert Communications Service Monitor

Overview

Data management and remote control

Key Features

Specifications

Applications

Options & Accessories

Documents & Resources

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