The Marconi IFR Aeroflex 3920 is an analog and digital radio test platform engineered for transmitter and receiver validation across engineering, production, and field service environments. It delivers integrated RF signal generation, spectrum analysis, and audio measurement in a single chassis, supporting FM, AM, SSB, P25, DMR, TETRA, NXDN, dPMR, and ARIB STD T-98 technologies with automated test sequences for major radio manufacturers.
Technical Specifications
RF Signal Generation & Analysis
• Frequency range (standard): 10 MHz to 1.05 GHz (usable down to 100 kHz)
• Frequency range (extended): 2.7 GHz with option 392XOPT058
• Generator level: +10 dBm to -130 dBm
• Generator level accuracy: ±1 dB (0.6 dB typical)
• Phase noise (3920B): -110 dBc/Hz at 10 kHz offset
• Time base accuracy: 0.01 ppm OCXO with external reference input
• Spectrum analyzer DANL: -140 dBm typical at 300 Hz RBW with pre-amp enabled
• Spectrum analyzer frequency range: 1 MHz to 1 GHz (standard); up to 2.7 GHz with extension
• RF analyzer measurement range: -130 dBm to 125 W
• Direct input power handling: 125 W (cyclical), 50 W (continuous)
• Receiver sensitivity (off-air): -100 dBm or -115 dBm with internal pre-amp
• Spectrum analyzer markers: 8 available
Digital & Analog Testing
• Analog modes: FM, AM, SSB duplex
• Digital standards: P25 (Conventional, Phase II TDMA, Trunking, AES Encryption), DMR (MOTOTRBO), TETRA, HPD, NXDN, dPMR, ARIB STD T-98
• Automated test support: Motorola APX, ASTRO, XTS, XTL series; Harris; EF Johnson; Relm/BK; Kenwood
• Pass/fail indication: Color-coded results
System Architecture
• Processing: Onboard PC with Linux OS, 30 GB hard drive
• Interface: USB mouse and keyboard support
• Configuration: Save/recall setups and parameters
• Legacy compatibility: HP/Agilent 8920B remote emulation
• Optional tracking generator (390XOPT061) and harmonics/spurious measurements (390XOPT060)
