Aeroflex RDX-7708CRW Weather Radar Test Set

The Aeroflex RDX-7708CRW is a Weather Radar Test Set designed for testing and calibration of ARINC 708 Solid State Coherent Weather Radar systems. Operating as an RF source and monitor, it simulates weather radar return signals and atmospheric conditions to verify system performance, accuracy, and reliability. The RDX-7708CRW variant provides dual reference capability, supporting both Rockwell Collins X band (152.777 MHz) and Allied Signal X band (78.6616 MHz) radar systems. This test set delivers precise RF output control across the 9295 to 9425 MHz band with output levels ranging from −50 dBm to −127 dBm in 1 dB steps and ±2 dB accuracy.

– Technical Specifications

RF Performance
• Output frequency range: 9295 to 9425 MHz
• Output level range: −50 dBm to −127 dBm in 1 dB steps (20 dB coupler output)
• Output level accuracy: ±2 dB over frequency and attenuation range
• RF ON/OFF ratio: 70 dB or greater
• Frequency counter accuracy: ±3 kHz with 1 kHz resolution

Pulse Modulation
• Internal PRF generator: 0 to 9999 pps at 1 Hz resolution
• Pulse width range: 0 to 99 ms and 270 µs (fixed) with 0.1 µs resolution
• Return delay: 1 to 999 µs or nautical miles at 1 unit resolution
• Doppler offset: 0 to +29 kHz at 1 kHz resolution
• Contour boost: 0 to 19.9 dB (RF outputs ≤ −70 dBm) at 0.1 dB increments

Power Measurement
• Peak power indicator range: 40 to 250 W
• Peak power accuracy: −0.6 dB with 1 W resolution
• Transmitter power measured via waveguide-mounted RF power module

Control & Monitoring
• PRF control: manual, transmitter, or external sync input
• Pulse width control: manual, transmitter input, or 270 µs fixed
• Digital readout of output frequency, PRF, and transmitter power
• Remote control via IEEE 488-1978 GPIB
• Monitor outputs for detector, spectrum analyzer, and sync

Electrical
• Power requirement: 100-240 VAC, 50-60 Hz or 110/220 VAC, 50-400 Hz
• Power consumption: 100 W

– Key Features

• Variance modulator built-in
• Simulates rain, snow, and fog conditions
• Dual reference frequency support (Rockwell Collins and Allied Signal X band)

– Typical Applications

• Weather radar system maintenance and repair
• Radar equipment calibration verification
• Aviation and meteorological system testing

– Compatibility & Integration

Designed for ARINC 708 Solid State Coherent Weather Radar systems. Interfaces: RS-232, USB, Ethernet.