CMA - Data Acquisition for New Space

Introduction:

 

CMA Compact Modular Data Acquisition for Space Launch Vehicles

The best Commercial Off The Shelf (COTS) data acquisition and telemetry solution for Low Earth Orbit space launch vehicles, missile testing, or other application where highly ruggedized and EMI hardened acquisition is required.

Sharing many features with the XMA upon which it is based, the CMA from SAFRAN Data Systems has enhanced EMI immunity and higher EMC. With its compact and ruggedized design, the CMA is the ideal fit for remote data acquisition in those harsh and tight spaces found in missiles and space launch vehicles. The CMA has the smallest effective size per sensor ratio available and offers highly versatile acquisition modules to easily tailor the instrumentation for each specific application. Acquisition modules perform highly accurate measurement, signal conditioning, serial interface, and bus monitoring. Modules also offer recording, GPS reception, tailored interfaces and a built-in transmitter allows for an all-in-one-box implementation. The on-board processing module can provide pre-processing of data and even fully-programmable command and control interfaces to an external system.

 

Key Features:

 

- Harsh Environments:  -45°C / +85°C, waterproof, shocks, vibration, lightning, EMI/EMC
- INET Ready: UDP communication, IEEE1588 synchronization, SNMP
- Ultra Compact & Generic: Generic analogue module, 2x3’’ / 51x76 mm, from 1 to 16 modules per stack
- Easy to Configure: eZ software suite, XML schema ( iNET, MDL)
- High Data Rate Accuracy: 0.001% in extreme temperature range
- Multi-format Outputs: PCM Chapter 4, Chapter 7, Low Latency Video, Chapter 10, UDP

 

Configuration:

 

Comprising of either one of two core unit which consists of a power supply and PCU, acquisition modules are added to suit the requirements of the test. See diagram below.

 

CMA Core8 - Small to medium data acquisition unit

  • 1 Central Processing Unit
  • 1 Power Supply
  • 1 cover plate to enclose the module stack
  • Up to 8 modules

 

CMA Core16 - Medium to large data acquisition unit

  • 1 Central Processing Unit
  • 2 Power Supplies
  • Up to 16 modules

 

XMA Core Form Factor

 

Modules:

A comprehensive range of modules are available for CMA, see list below.  Each CMA modules has a 2" x 3" form factor and incorporate the same form field workable connector for ease of integration in existing flight test networks.

 CMA Module

Analogue Acquisition Modules

  • CMA ANA .................................... 8 Universal Analogue Channels
    CMA ANA - 8 Universal Analogue Channels
    • Analogue signals (differential or single-ended) with or without excitation
    • Thermocouples (type K, J, T, E, N)
    • RTD including linearization (PT50, PT100, PT1000)
    • Full bridge strain gauges
    • IEPE/ICP accelerometers, TEDS IEEE1451.4 compliant
  • CMA HDA ................................ 16 Single/Diff Analogue Channels
    CMA HDA - 16 Single/Diff Analogue Channels
    • 16 independent differential or single-ended analogue inputs: Up to ±0.1% FSR accuracy
    • Thermocouples (type K, J, T, E, N)
    • ±8mV to ±10.24V programmable input range
    • DC to 20kHz analogue bandwidth (±10mdB typ.)
    • Iso-synchronous sampling across multiple DAUs
    • Digital zoom and rescale on each channel
    • FIR or IIR or unfiltered per channel
    • ESD/Lightning protected
  • CMA SCN .................................................... 2 Scanner Channels
    CMA SCN - 2 Scanner Channels
    • Pressure scanner
    • Voltage scanner
    • Temperature scanner
    • Two differential analogue inputs
    • Two 7-bits address lines for external multiplexers channel selection: TTL or CMOS5V; CMOS12V
    • ±1024mV / ±2048mV / ±5.12V / 10.24V ranges better than ±0.25% FSR accuracy
    • Compatible with ESP 16-HD/32HD/64HD (Conventional or DTC):
  • CMA THC ........................................... 8 Thermocouple Channels
    CMA THC - 8 Thermocouple Channels
    • Acquire wide ranges of temperatures with good accuracy
    • Thermocouple K, J, T, E and N (other on request)
    • Accuracy better than ±2°C for type K
    • Restitution up to 128 samples per second
    • Digital IIRB8 filtering
    • ESD/Lightning protected
    • Cold Junction Temperature status available
  • CMA VDA............................ 2 Analogue Video & Audio Channels
    CMA VDA - 2 Analogue Video & Audio Channels
    • Two independent Analogue video signals
      • Analogue SDTV video formats
        (NTSC 525i (RS-170 & RS- 170A))
      • S-Video, Y/C or CVBS
      • NTSC or PAL
    • Two independent Audio signals

Digital Acquisition Modules

  • CMA ARC .............................................. 16 ARINC 429 Channels
    CMA ARC - 16 ARINC 429 Channels
    • ARINC-429 frame acquisition with parsing features
    • 16 differential ARINC-429 input channels
    • Up to ±30V differential input range
    • Differential input impedance > 30kΩ
    • High/Low bus speed independently configurable per input channel or automatic bus speed detection
    • 1024 programmable filters per input channel
    • Internal time stamping with a 1μs resolution
    • Lightning protection (DO-160G)
  • CMA CAN .......................................................... 4 CAN Channels
    CMA CAN - 4 CAN Channels
    • Four Controller Area Network (CAN) acquisition channels
    • Bus Frame Identifier: CAN 2.0A, CAN 2.0B (11 or 29 bits)
    • Maximum bus bitrate: 1Mbps / channel (Bitrate selectable on each channel)
    • Differential input impedance > 30kΩ
    • High/Low bus speed independently configurable per input channel or automatic bus speed detection
    • Message counters / Error counters available
    • 1μs Rx Frame time-stamp resolution
    • Lightning protection (DO-160G)
  • CMA DAB ...................................... 16 Discrete Monopolar Inputs
    CMA DAB - 16 Discrete Monopolar Inputs
    • Synchronous Event Sampling
    • Asynchronous Event Detection
    • Frequency, Counter, (asynchronous or synchronous) Period Measurement, Duty Cycle Measurement
    • 16 monopolar inputs
    • Up to 50V analogue input range
    • 2 independent programmable thresholds per input (hysteresis skill, 16-bits DAC)
    • Differential input impedance > 200 kΩ
  • CMA IPX .......................................... Ethernet Acquisition Module
    CMA IPX - 2 Ethernet Acquisition Channels
    • Network telemetry traffic spying
    • Data acquisition from sensors with Ethernet UDP output
    • Data acquisition from TCP communications between two hosts
    • Two independent 10Base-T / 100 Base-TX 802.3 Ethernet input ports
    • Two independent acquisition, filtering and extraction flows
    • Simultaneous protocol handling per input port
    • Support of Unicast / Multicast / Broadcast addressing at Network layers (IPV4)
  • CMA MIL ............................................ 4 MIL-STD-1553 Channels
    CMA MIL - 4 MIL-STD-1553 Channels
    • 4 independent (or 2 redundant) MIL-STD-1553B bus monitoring with native 1553 electrical level or 2 independent (or 1 redundant) MIL-STD-1553B bus monitoring with RS422 electrical level.
    • Short (direct coupling) or long (transformer coupling) stub
    • Parsing on all 1553 message types.
    • Message time stamping on parity bit of the first word of the message (with 1μs resolution)
    • Lightning protection (DO-160G)
  • CMA MRC ..................... 4 MIL-STD1553 / RS-X / CAN Channels
    CMA MRC - 4 MIL-STD1553 / RS-X / CAN Channels
    • One single module for three types of digital bus acquisitions (exclusive per firmware)
    • Up to 4 x MIL-STD-1553 acquisitions
    • Up to 4 x RS422/485 acquisitions
    • Up to 4 independent CAN buses (native CAN or RS-CAN)
  • CMA RSD ................4 x RS, 16 Differential or Discrete Channels
    CMA RSD - 4 x RS 232/ 422 / 485, 16 Differential or Unipolar Discrete Channels
    • Synchronous Event Sampling
    • Asynchronous Event Detection
    • Frequency, Counter, (asynchronous or synchronous) Period Measurement, Duty Cycle Measurement
    • Pulse Totalizer Counter Measurement (non-volatile and resettable): PTC
    • Additional Frequency to Digital Converter Measurement: FDC2
    • Point to point or network RS422/485 frames acquisition with filtering features
  • CMA RSX ......................................4 x RS-232/422/485 Channels
    CMA RSX - 4 x RS-232/422/485 Channels
    • Up to 4 RS422/485 asynchronous channels
    • Up to 2 RS422/485 synchronous channels (Data + Clock)
    • Up to 4 RS232 asynchronous channels
    • Up to 2 RS422 PCM synchronous channels (Data+Clock), up to 20Mbps
    • NRZ (L,M,S), RNRZ-L (scrambled NRZ-L), Bi-L,M,S
    • Customization of RS processing available on demand

Other Modules

  • CMA DMY.............................................................Dummy Module
    CMA DMY - Dummy Module
    • This module is dedicated to be used as a spacer to replace any other module in order to keep constant the DAU mechanical form factor.
  • CMA ETH ............................................................Ethernet Module
    CMA ETH - Ethernet Module
    • Network telemetry
    • Remote monitoring, configuration and control of the DAU when direct USB connection not applicable
    • PTP synchronization
    • High performance, low latency IRIG106 Chapter 10 UDP streaming
    • High performance, low latency IENA streaming
  • CMA GPS ............................................................GNSS Receiver
    CMA GPS - GNSS Receiver
    • 2 trajectory tracking modes:
      • GNSS L1-C/A acquisition
      • External NMEA frames acquisition
    • 2 simultaneous modes for PVT output:
      • NMEA frames
      • Decoded parameters
    • Absolute dating and DAU system synchronization
  • CMA NEX ............................................Network Extender Module
    CMA NEX - Network Extender Module
    • Telemetry data streams’ aggregation to network root
    • Time & synchronization propagation across network
    • Monitoring, Configuration and Control protocol propagation across network
    • 5 Ethernet 10/100Mbps downlink ports (source port)
    • 1 Ethernet 10/100Mbps uplink port (aggregation port)
  • CMA OBP .......................................On-board Processing Module
    CMA OBP - On-board Processing Module
    • User defined digital processing
    • Maximize customization capabilities of your FTI: Using any synchronous and asynchronous measurements across the system as input operands
    • Generate computation results as new measurements available in the whole FTI system (TM, recording, display,...).
    • Optimize TM bandwidth with smart on-board data reduction
  • CMA RCD ..............................................32Gb Recording Module
    CMA RCD - 32Gb Recording Module
    • Data recording for captive flight without real time ETH streaming nor PCM output
    • Critical data recovery
    • Up to 20Mbps data recording throughput
  • CMA TRS.......................................................S-Band Transmitter
    CMA TRS - S-Band Transmitter
    • Telemetry system for launch vehicles, UAV, fixed and rotary wings aircraft, missiles, ground vehicles or fixed stations.
    • S band frequency
    • Output power from 5mW to 5W minimum
    • Programmable modulations (IRIG 106): Tier 0 (PCM/FM), Tier I (SOQPSK-TG)
    • Bit rate up to 40Mbps

 

For more technical details please contact a member of the team at Photo-Sonics International Ltd.

 

 

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