The IFR Aeroflex IFF-701 Transponder Test Set is a portable, battery-operated bench instrument for testing and troubleshooting aviation transponders and interrogators across multiple IFF modes. It performs both automated and single-test diagnostics to verify Identification Friend or Foe (IFF) system functionality, including Mode 1, 2, 3/A, C, 4, S, and E transponder modes, plus Mode 1, 2, 3/A, C, and 4 interrogator modes. The unit measures transmitting frequency, power, receiver sensitivity, and Minimum Trigger Level (MTL), with an integrated signal generator operating at 1030 MHz (DCXO controlled ±10 kHz). It supports Mode 4 code storage, interrogator auto-test with static and moving target simulation, and includes built-in self-test diagnostics. RS-232 control allows adjustment of pass/fail parameters. Operating from AC, DC, or internal batteries (~2 hours runtime), the IFF-701 is environmentally packaged for all-weather field and maintenance operations. An ITAR-compliant IFF-701Ti variant is available.
Technical Specifications
• Modes Supported: Transponders—Mode 1, 2, 3/A, C, S, 4, 5, E; Interrogators—Mode 1, 2, 3/A, C, 4
• Frequency Range: 960 MHz to 1.215 GHz (or 920–1200 MHz)
• Signal Generator: 1030 MHz ±10 kHz (DCXO controlled)
• Signal Generator Level: -57 to -7 dBm into 50 Ω
• Transponder Power Output: Adjustable to 250 Watts
• Reply Delay (P1 to P3): 4.00 µs ±50 ns
• Reply Jitter (P1 to P4): 6.00 µs ±50 ns
• Battery Runtime: Approximately 2 hours
• Power Sources: AC, DC, or internal battery
– Key Features
• Auto Test function for discrete series verification
• Single Test mode for targeted fault isolation
• Accurate transmit frequency, power, and receiver sensitivity measurement
• Minimum Trigger Level (MTL) determination
• Mode 4 code storage capability
• Interrogator auto-test with parameter validation and target simulation
• Built-in Self-Test (BIST) and internal diagnostics
• RS-232 port for parameter control and integration
– Typical Applications
• Organizational and intermediate level maintenance
• Over-the-air and direct-connection transponder testing
• Interrogator performance validation
• Enhanced Traffic Alert Collision Avoidance System (ETCAS) testing
– Compatibility & Integration
• RS-232 communications interface for automated test control
• ITAR compliance available (IFF-701Ti variant)
