The Marconi IFR Aeroflex 2944 Communications Service Monitor is a portable test instrument for analyzing and maintaining mobile radio communication systems and wireless devices. It combines RF signal generation, modulation analysis, spectrum analysis, and audio measurement in a single unit weighing under 12 kg, suitable for field service and laboratory deployment.
Technical Specifications
RF Signal Generation & Measurement
• Frequency range: 400 kHz to 1.05 GHz
• Signal generator output power: −141 dBm to +13 dBm with +5 dBm nominal output and +7 dBm overrange
• SSB phase noise: Better than −95 dBc/Hz
• Frequency stability: 0.5 ppm TCXO standard; optional OCXO available
• Generator level accuracy: ±2 dB above −127 dBm
• Power measurement range: 2 µV to 150 W; accurate to 5 mW on N-type connector
• Power meter dynamic range: −70 dBm to +20 dBm (narrow and broad band)
• RF port protection: 5 W standard on all ports
Modulation & Signal Analysis
• Measurement functions: RF power, frequency, AM/FM/ØM/PM/FSK/ASK/PSK modulation, distortion, SINAD, BER, FSK deviation, AM depth, FM deviation, frequency error
• Audio analysis: Bar charts, voltmeters, S/N meters, distortion meters, frequency meters
• Dual audio generators: 10 Hz to 25 kHz range, 0 dBu to −130 dBu amplitude
Spectrum Analyzer & Oscilloscope
• Spectrum analyzer: 50 kHz to 1 GHz with −100 dBm to +13 dBm amplitude range; optional tracking generator and offset tracking for duplexer and filter alignment
• Oscilloscope: 1 MHz bandwidth, 100 µs to 100 s/div timebase
Interfaces & Control
• Standard RS-232; optional IEEE-488.2 (GPIB)
• Microprocessor-controlled with automatic signal tuning, stored settings recall, and screen capture (bitmap) via serial port
– Key Features
• Integrated RF generation, measurement, and analysis in portable form factor
• Real-time spectrum display with analog analyzer–comparable speed
• Comprehensive modulation analysis across digital and analog standards
• Full audio analysis suite with dual generators
• 5 W RF protection on all measurement ports
– Typical Applications
• Mobile radio system commissioning and maintenance
• Wireless communication equipment testing
• Component and duplexer alignment
• On-site field service diagnostics
– Compatibility & Integration
Designed for mobile radio communication systems and general wireless equipment testing. RS-232 and optional GPIB interfaces enable remote control and data acquisition in automated test environments.
