The Marconi IFR Aeroflex 2957B Radio Test System is a transportable RF test platform that integrates a Radio Communications Test Set with cellular adapter capabilities. It delivers DC, audio, and RF measurement functions alongside base station simulation signaling for cellular mobile radio testing. The system supports AM, FM, and ØM modulation across multiple radio standards and protocols, making it suitable for testing mobile radios, communication transceivers, and diverse RF devices in field and service environments.
Technical Specifications
Frequency Range: DC to 1 GHz with support for AM, FM, and ØM transceivers up to 1000 MHz.
Modulation Support: AM, FM, ØM, Phase, Pulse, and FSK modulation generation and analysis.
RF Power Measurement: 2 µV to 150 Watts; accuracy better than 10% down to 5 mW on N-Type connector.
FM Deviation Range: 0 to 25 kHz with defined accuracy specifications.
Audio Capabilities: Audio generator, AF input/output measurement, and comprehensive audio analysis.
– Key Features
• Signal generator with precise modulation control for testing and calibration
• SINAD meter with distortion and noise measurement capabilities
• Spectrum analysis with real-time signal examination and demodulation
• Modulation meter for RF signal analysis
• Digital signal analysis including DTMF and DCS encoder/decoder testing
• AMPS signaling protocol support for cellular applications
• Full Auto Test and GO/NO-GO test modes
• Manual test capability for operator-directed diagnostics
– Typical Applications
• Mobile radio and transceiver service and repair
• Cellular mobile radio validation and commissioning
• RF device diagnostics and field testing
• Base station simulation for protocol verification
• DTMF and digital signaling equipment testing
– Compatibility & Integration
The 2957B architecture combines the 2955 series Radio Communications Test Set with integrated cellular adapter, enabling single-unit deployment for multi-standard radio testing without external instrumentation.
