The family of Radiocommunication Service Monitors CMS comprises two 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
