The Marconi IFR Aeroflex 2947A is a portable communications service monitor engineered for testing, analysis, and maintenance of radio systems across 400 kHz to 1.05 GHz. This militarized instrument combines signal generation, RF measurement, spectrum analysis, and modulation capability in a single unit weighing under 15 kg, meeting stringent defense and aviation standards including MIL-PRF-28800F Class 2 and MIL-T-28800 Type II Class 3.
Technical Specifications
• Frequency Coverage: 400 kHz to 1.05 GHz (signal generator and receiver)
• RF Power Measurement: Up to 150 W with ±10% accuracy
• Signal Generator Output: +5 dBm typical, +7 dBm overrange
• Signal Generator Level Accuracy: ±2 dB above -127 dBm
• Spectrum Analyzer Dynamic Range: 70 dB with adjustable reference level
• Spectrum Analyzer Resolution: 100 Hz per division to full span
• Low-Level Signal Measurement: From 2 µV
• RF Port Protection: 5 W on all ports
• Digital Storage Oscilloscope: 50 kHz with anti-aliasing
• Modulation Modes: AM, FM, PM, CW, FSK, PSK
• Duplex Operation: Full duplex with unrestricted offset
• Audio Generators: Two variable channels with 600 Ω balanced/unbalanced outputs
– Key Features
• Tracking generator with offset capability
• SSB demodulation (upper and lower sideband, 400 kHz to 1 GHz)
• Automatic harmonic analysis and transient capture on rising/falling edges
• Bit error rate testing for transmitter and receiver validation
• Network simulation with signaling protocol emulation
• Tone generation and decoding with full remote control
• PCMCIA dual-slot memory for settings, results, and Auto-run programs
• Super-fast LCD display with rapid refresh
• AC or DC power supply operation
– Typical Applications
• Mobile radio and base station testing
• Repair and calibration laboratory support
• AMPS, TACS, and EDACS standard compliance verification
• Telecommunications, aerospace, and defense service operations
– Compatibility & Integration
• RS-232 control interface (GPIB/IEEE 488.2 optional)
• Push-to-Talk microphone input
• DOS-formatted PCMCIA memory cards
• Dimensions: 178 mm × 394 mm × 500 mm
• Weight: Under 15 kg
