The Rohde & Schwarz CMS54 is a radio communications service monitor engineered for transmitter, receiver, and duplex testing across 400 kHz to 1 GHz. This single instrument consolidates RF synthesis, spectrum monitoring, modulation analysis, and audio measurements—eliminating the need for multiple test sets in service and maintenance workflows. The CMS54 delivers simultaneous display of instrument settings and measurement results with both manual and automatic operation modes. Its compact, lightweight design and low power consumption support both stationary and mobile deployment.
Technical Specifications
• Frequency Range: 400 kHz to 1 GHz
• RF Synthesizer: 0.4 to 1000 MHz with AM, FM, jM, and multitone modulation; 10 Hz resolution
• Tracking Generator: 0.4 to 1000 MHz full-span operation
• Spectrum Monitor: Adjustable span (zero to full span) with AM, FM, and SSB modulation analysis filters
• Power Measurement: 5 mW to 100 W RF power; selective meter to −100 dBm; optional 100 W meter (CMS-B32) rated 80 W continuous, 100 W maximum (3-minute burst, 10-minute cool-down); ≤0.15 dB additional error (P >40 mW, AM=0%)
• Modulation Analysis: AM/FM/jM meters with +PK, −PK, PK HOLD, PK/2, RMS, RMS2 weighting; duplex meter for any spacing; frequency and phase deviation meters; AM depth meter
• Adjacent-Channel Power: ETSI-standard filters included
• Harmonic Measurements: Automatic harmonic analysis
• RF Frequency Counter: High-sensitivity counter with offset-counting capability
• AF Measurements: Peak and RMS voltmeter; AF frequency counter (period and gate-time modes); SINAD meter with variable test frequency; S/N meter; distortion meter with variable test frequency
• Signal Generation: Two independent modulators (20 Hz to 30 kHz, 0.1 Hz resolution); selective-call encoder (all standards, user-programmable); CDCSS and DTMF coders; VOR/ILS signal generator
– Key Features
• Single instrument replaces multiple test devices
• Simultaneous settings and results display
• Manual and automatic measurement modes
• Compact, low-weight form factor
• Low power consumption
– Compatibility & Integration
• Optional IEC/IEEE-Bus Interface (CMS-B54): IEC625-1/IEEE488 listener/talker
• Optional 10 MHz Reference I/O (CMS-B22): TTL levels, Zout ≈50 Ω (>1.5 Vpp), Zin ≈50 Ω
