SES: Raytheon - Interrogator Cockpit Display Unit

The ICDU is the man-machine interface for a Raytheon military Identification, Friend or Foe (IFF) system and provides all the control and display functions necessary for an IFF Interrogator.

The front panel of the ICDU is fitted with rotary switch controls and toggle switches which protrude through a removable illuminated front panel. An aperture is provided in this removable panel for an LED alpha-numeric display module which incorporates discrete back-lit annunciators. The display module is daylight readable and NVG compatible.

A single circular military connector is mounted on the rear panel for all power and I/O connections. The ICDU operates from a 28 V dc power supply for primary power. An earth stud is located on the rear panel.

The case is a two part Aluminium Alloy (L99) casting. The front casting accommodates the Illuminated Front Panel, the Display Module, switches and an interconnecting circuit board. The rear casting accommodates the main circuit boards, power supplies, I/O connector, and feedthrough filtering.

The processing core is a Siemens C167CR Microcontroller, complete with re-programmable external Flash ROM and on-board CAN interface. The functionality of the design is provided by software written in the ANSI C language using the Tasking Embedded Design Environment tool set.

Maximum use is made of COTS modules and sub-assemblies that are capable of meeting the environmental requirements without compromising the unit's reliability figure.

Specifications

• Size: 95.2mm(h) x 146mm(w) x 122.3mm(d, inc. switches)
• Weight: 1.35 kg
• Case: Aluminium Alloy (L99)
• Finish:
  • Rear: Matt black to FED-STD 595-37038
  • Front: Grey to FED-STD 595-36231
• Processing: Two Siemens C167CR 16-bit microcontrollers, each with 128kByte RAM, 256kByte ROM and 2kByte NVRAM, programmed in 'C'
• Interfaces:
  • One RS422 serial links, 9600baud
  • 6 discrete input lines
  • 10 volt free discrete output lines
• Input Voltage:
  • 18V - 28V DC (primary power)
  • 115V AC (Type 1 illuminated front panel)
• Power Consumption: 11.5W max, 8W normal
• Earthing: Via four DZUS mounting fastners and rear M5 earthing stud.
• Operating Temperature: -40°C to +70°C
• Storage Temperature: -55°C to +90°C
• Temperature/Altitude: 25,000ft at -40°C, 70,0000 at +40°C
• Humidity: 60% at +38°C, 95% at +65°C
• Electro-Magnetic Compatibility: Tested to DEF-STAN 59-41 part 3, Issue 5 for conducted & radiated emissions and conducted & radiated susceptibility.
• Acceleration Resistance: Operational up to ±13g, non-operational up to ±25g
• Vibration: Tested to MIL-STD-810E Method 519.4