Rohde & Schwarz CMS57-B1-B5-B9


Radio Test Set

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

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, φM 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 Ω 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.

Options:
B1 = OCXO reference oscillator, aging : 2*10E-7/year
B5 = Control interface with CCITT filter, DTMF decoder and Centronics interface
B9 = Duplex modulation meter for CMS55/57 with ACP meter and tracking - See more at: