The Marconi IFR Aeroflex 2955A is a radio communications test set engineered for testing and servicing radio equipment across 1.5 MHz to 1 GHz. It delivers integrated signal generation, modulation analysis, and frequency measurement capabilities for mobile radios, pagers, base stations, and land mobile radio systems. The instrument combines precise RF signal synthesis, real-time modulation measurement, and audio demodulation in a compact benchtop platform with GPIB automation support.
Technical Specifications
Frequency Range: 1.5 MHz to 1 GHz
Signal Generation
• Frequency Accuracy: ±1 ppm (typical)
• Output Level Range: −127 dBm to +13 dBm (programmable)
• Output Level Accuracy: ±1 dB
• Output Impedance: 50 Ohms
• Spurious Output: Better than −60 dBc (harmonic and non-harmonic)
Modulation Analysis
• AM: 0% to 90% range, ±3% of reading + 1% AM accuracy
• FM: 0 kHz to 20 kHz deviation (typical), ±3% of reading + 1% FM accuracy
• APCO-25 (optional): Digital voice testing support
Frequency Measurement
• Range: 1.5 MHz to 1 GHz
• Accuracy: ±1 ppm (typical)
• Resolution: 1 Hz minimum
Audio Output: Built-in speaker and headphone jack for demodulated audio monitoring
Power Meter (Optional)
• Sensor-dependent range, typically to +20 dBm
• Accuracy: ±0.5 dB (typical)
Power Requirements: 100–240 VAC, 50/60 Hz selectable, approximately 150 VA maximum
– Key Features
• Type N female RF output connector; BNC female input/auxiliary connectors
• External trigger input (BNC female)
• GPIB (IEEE-488.2) standard interface with optional RS-232 serial interface
• Dimensions: 177 mm H × 425 mm W × 400 mm D
• Weight: Approximately 15 kg
– Typical Applications
VHF/UHF mobile radio testing, handheld transceiver servicing, paging system verification, land mobile radio base station diagnostics.
– Compatibility & Integration
Supports analog and digital radio communication systems within its frequency range. Suitable for testing diverse radio types including mobile units, handhelds, paging networks, and LMR infrastructure.
