Embedded Modules & Sub-systems

Embedded Modules & Sub-systems


          Solid State Flight Data Recorder

             Helicopter Version

  •   25 hours of Aircraft data; 2 hours of audio                              
  •   Protected Memory module (PMM)​Signals and Interfaces
  •   44 Analog inputs   
  •   120 digital inp
  •   6 frequency inputs; 4 synchro  inputs
  •  16 ARINC-429 receivers; one MIL-1553 interface
  •  USB interface for high-speed milk-out

                Aircraft Version

  • 10 hours of Aircraft data; 2 hours of audio
  • Protected Memory module (PMM)‏‏
  • Signals and Interfaces
    • 16 Analog inputs
    • 24 digital inputs
    • 4 frequency inputs
    • 16 ARINC-429 receivers; one MIL-1553 interface
    • USB interface for high-speed milk-out

        Data Sheet  


INCOM Controller

INCOM Transceivers are used for UHF / VHF communication for ground-to-air and air-to-air. The transceivers are interfaced on MIL-STD-1553 interface to INCOM Controller, which is cockpit-mounted, and provide an operator interface. INCOM transceiver, along with the controller, form an important part of aircraft communication

INCOM Controllers provide ON/OFF control, Rotary switch, a set of self-illuminated back-lighted keys and 12-character alpha-numeric LED display for operator for selection of channels, mode and frequency of the INCOM transceiver. It features an illuminated panel, which aids the pilot in operating the unit under low-light conditions. It is housed in a machined Aluminium enclosure.

The unit is fully qualified for Airborne use on Fighter Aircraft platform, and conforms to the required environmental standards, including MIL-STD-810D, MIL-STD-461D and MIL-STD-704D.

Data Sheet 


Antenna Control Unit

 Antenna Control Unit (ACU) controls an antenna, which tracks a flying object in both the Azimuth and Elevation axes.

   ACU is a 19" rack mount equipmet, comprising of:

  • Conduction cooled Power PC based single board computer.
  • Customized VME64-back plane and interface board with power supply module.
  • Receives/Transmits data over Ethernet link from different subsystems.
  • Sixteen (16) digital inputs & Eight (8) digital outputs.
  • Eight (8) Analog inputs & Four (4) Analog outputs.
  • Three (3) serial ports with RS-422 interface.
  • Three (3) Ethernet ports &CAN BUS
  • Interface with incremental Encoder, absolute Encoder
  • Four (4) SSI interface


The embedded software is based on Vx Works. It has been validated to DO-178B Level C.




Auxiliary Display Unit

Auxiliary Display Unit (ADU) has been designed, manufactured and deployed for use on submarine platform. It acts as an operator interface to a Super Heterodyne Receiver.

​Using the ADU, the operator can program the Receiver to scan the frequency spectrum of 8000 - 18000 MHz. The receiver can be programmed to adopt different search strategies like SCAN and STEP, with different values. Lockout frequencies can also be programmed from ADU. In addition to enabling the configuration of the receiver, ADU displays information reported by the receiver, which includes track information (i. e. frequency spectrum), along with applicable parameter values including RF attenuation, IF attenuation and IF bandwidth. ADU also accepts direct video pulse and displays the same in time domain display, representing both the PRF and PW traces, with programmable sweep rates.

ADU has the following key features:

  • Operator interface to Super heterodyne Receiver Processor
  • Designed and manufactured for deployment on submarine platform
  • Supports Spectrum Domain Monitoring (SDM) and Time-Domain Monitoring (TDM)
  • Provision to program the SHRXP for SCAN, STEP and LOCKOUT strategies
  • Spectrum Domain Monitoring
  • Time Domain Monitoring
  • High-speed (100 MSPS) data acquisition card
  • Custom-designed membrane keypad for functions and data entry
  • Provision to connect standard IBM PC keyboard
  • 10.4" LCD display, with adjustable brightness, contrast and viewing angle
  • Wide temperature range
  • Aluminium enclosure, with frame structure and machined front-panel

Data Sheet




Modes                          Invasive, Non-Invasive, CPAP, VMV, PSV, PC-CMV, VC-CMV 

Input Pressure             Up to 50 cmWC

Breath Rate                  5 – 45 BPM

I:E Ratio                        4:1 – 1:4

Tidal Volume                50 – 600 ml

PEEP                              0 – 30 cmWC

Pressure Support         Up to 60 cmWC

Sigh                                Yes

FiO2                                Up to 100%

Tidal Volume                 50 – 600 mL

Peak Flow Rate             60 LPM

Dual-use                         Hospital Mode (with compressed air and O2 supply from hospital) Standalone
                                        (with compressor and air reservoir package)   

Technology                    Microprocessor based Intelligent Equipment

Display                            800 X 480 Full Graphics Color Display 32-bit color depth; > 200 Cd Illumination

Alarms                            Audio Visual

Operator Interface        Touch-screen Interface  (Optional Switches and Potentiometers

Sensors                          Flow, Oxygen and Pressure Sensors

Power Supply                 230V AC, 50Hz Optional 12V battery Backup for four (4) hours Power
                                          consumption – less than 40 watts

Data Sheet                       Sigma Brochure