MPIP Switched Resistor Module (SRM)

Supported Interfaces Type(s)
Purpose
Direction
Thermistor Sensor Monitor (TSM) Simulation
Temperature simulation by selectable Impedance (resistor)
Output
Bi-Level Switch Monitor (BSM) Simulation
Simulation of Open/Close State of a switch or relay
Output
Low-Power Command (LPC) Simulation
Low-Voltage Pulse generation to drive opto-coupler channels
Output
  • Interface Type Support:
    Temperature Sensors Monitor (TSM) Source
    Bi-Level Switch Monitor (BSM) Source
    Low-Power Command (LPC) Source
    Up to 24 output on two (2) DA-26S connectors
  • TSM Specifications:
    Number of discrete resistors: 4 or 5
    Number of values/positions: 16 or 32
    Output resistance range: 0Ω to ∞Ω (build dependant)
    Resistor accuracy: 0.1%
    Optional harness calibration setting for channels with 4 resistors
    Compliant with ECSS-E-ST-50-14C
  • BSM Specifications:
    Switch operating current capability: Up to 10mA
    Switch operating voltage capability: Up to 15V
    Switch closed resistance: ≤ 50Ω
    Switch open resistance: ≥ 1MΩ
    Compliant with ECSS-E-ST-50-14C
  • LPC Specifications:
    Signal type options: Pulsed of Static
    Output resistance: 370Ω to 430Ω
    Passive output voltage (closed circuit) +4.4V to +5.5V
    Active output voltage (open circuit) 0V to +0.5V
    Pulse width: 4ms to 120ms
    Compliant with ECSS-E-ST-50-14C
  • FMEA Report available
MPIP Switched Resistor Module (SRM) Celestia STS C-STS