Rohde & Schwarz CMS Series Details

Rohde & Schwarz CMS Series

Radiocommunication Service Monitor

The family of Radiocommunication Service Monitors CMS comprises four models. These radio testers allow transmitter, receiver and duplex measurements to be performed on mobile radios, base stations or RF modules. The CMS family monitors are ideal radio testers for service, maintenance and test departments. CMS - a test set replacing many individual measuring instruments

Due to the comprehensive standard configuration of the individual models and the optional extensions tailored to specific applications, external measuring instruments in addition to the CMS are not required.
Overview of models:
Basic features:

Transmitter and receiver testing

Spectrum monitor

Fully automatic testing

SSB test

CMS54 - the high-end tester for demanding requirements

Basic features additionally with:

Full-span tracking generator from 0.4 to 1000 MHz

Adjacent-channel power meter with standard ETSI filters

Duplex modulation meter

Automatic harmonic measurement

Cable fault test

CMS57 - the specialist for avionics

Basic features additionally with:

VOR/ILS signal generator

Overview of configurations (model-dependent or optional)

Signal sources

RF synthesizer from 0.4 to 1000 MHz, resolution 10 Hz, with AM, FM, ?M and multitone modulation capabilities

Two independent modulation generators, from 20 Hz to 30 kHz each, resolution 0.1 Hz

Selective-call encoder to all standards (also user-programmable)

CDCSS coder

DTMF coder

10 MHz reference frequency input/output

VOR/ILS signal generator

Measuring facilities

RF frequency counter, RF frequency-offset counter

Power meter from 5 mW to 100 W

Selective RF power meter down to -100 dBm

RF spectrum monitor with wide dynamic range and filters which also allow modulation analysis (AM, FM, SSB)

Tracking generator in frequency range from 400 kHz to 1000 MHz

Adjacent-channel power meter with standard ETSI filters

Modulation meter for AM, FM and jM; weighting: +PK, -PK, PK HOLD, PK/2, RMS, RMS2

Duplex modulation meter for duplex spacings of any size

AF voltmeter with peak and true RMS weighting

SINAD meter with variable test frequency

S/N meter

Distortion meter with variable test frequency

AF frequency counter with period and gate-time counting

Selective-call decoder for all standards (also user-programmable)

DTMF decoder

CDCSS decoder

Oscilloscope

DC ammeter/voltmeter

Transient recorder for analysis of power and frequency transients

Cable fault test

Filters

CCITT or C-message filters for weighting to relevant standards

Continuously tunable bandpass filter from 50 Hz to 5 kHz with high skirt selectivity for selective modulation and AF measurement

Continuously tunable notch filter from 100 Hz to 5 kHz for signal suppression

Highpass and lowpass filters for band limiting and measurement of subaudio tones

Other facilities

Second RF input with high sensitivity for off-air measurements, can be used independently for module testing

Built-in 600 AF transformers for modulation generator and AF voltmeter

Connector for battery (11 V to 32 V)

13 dBm RF output for off-air measurements

Memory for storing complete instrument setups

Automatic tests

Automatic test routines are indispensable for high throughput and reproducible results in service and production: in the learn mode, the Radiocommunication Service Monitor CMS stores all manual settings and measurements and produces from them ready-to-start automatic test routines. The user need not have any programming knowledge or learn equipment-specific command sets.

Tolerances, comments and conditions (loops, jumps, queries and control commands) can additionally be inserted into the test routines. Programs can also be activated directly from the memory card. The test report format may be user-specified and can be clearly structured by transferring control characters to the printer, such as blank line, paragraph and bold-face.