Rohde and Schwarz CMTA52 Radiocommunication Analyzer

The Rohde & Schwarz CMTA52 Radiocommunication Analyzer is a dual-function instrument that generates and analyzes RF signals across the 0.1 MHz to 1.05 GHz band. It supports AM, FM, PM, quadrature modulation, and SSB, making it suitable for development, production testing, and field servicing of wireless devices. The analyzer combines signal generation with comprehensive measurement capabilities—transmitter power and modulation analysis, receiver sensitivity and selectivity testing, and audio quality assessment—enabling complete performance verification of radiocommunication equipment in a single platform.

– Technical Specifications

Frequency & Signal Generation
• Operating range: 0.1 MHz to 1.05 GHz
• RF synthesizer with 1 Hz frequency resolution
• Output power: 16 dBm maximum
• Level adjustment range: 20 dB
• Frequency settling: fast settling times
• FM-DC coupled modulation up to ±100 kHz deviation

Modulation Capabilities
• AM, FM, PM, quadrature modulation (qM), and SSB
• One or two internal modulation generators with external modulation option
• Multiple modulation and multi-tone modulation support

Reference Oscillator
• OCXO (Oven Controlled Crystal Oscillator) with aging rate <2×10⁻⁹/day

Signal Analysis & Measurement
• Transmitter: power, frequency, modulation accuracy, spectrum, and adjacent-channel power (ACP) measurements
• Receiver: sensitivity, selectivity, and audio quality measurements
• Audio analysis: SINAD, distortion, and frequency response measurements with continuously tunable distortion meter
• AF and SSB spectrum analyzers
• Storage oscilloscope for AF, DEMOD, and EXT signals with repetitive and single-shot capture modes
• Phase deviation resolution: 1.5/3/6 rad
• Frequency deviation resolution: <50 Hz (1200 baud), <100 Hz (50 baud, <1.5 kHz deviation), <200 Hz (50 baud, <3 kHz or <6 kHz deviation)

– Key Features

• Selective-call encoder/decoder (all standards, programmable)
• DTMF encoder/decoder
• Subaudio signalling and supervisory tone generation (phi tone, SAT)
• Cellular radio simulator options (Network C, Radiocom 2000, NMT 450, NMT 900, AMPS, TACS)

– Automation & Integration

• IEC/IEEE bus interface for automated test sequences
• Relay matrix for Device Under Test (DUT) control
• Optional CMTA-B5 Autorun Control/Printer Interface for standalone transceiver testing without external controller