MT3923

Digital I/O
MT3923 - 3U Digital Input/Output, is standard 3U single-width (4HP) module. The MT3923 has 32 24V digital inputs isolated from the computer system by optocoupler galvanically.
The MT3923 is standard 3U single-width (4HP) module. 

The MT3923 has 32 24V digital inputs isolated from the computer system by optocoupler galvanically. The inputs are also potential free to each other in groups of four inputs. A high performance of input circuit ensures a defined switching point and polarization protection against confusing the pole. All inputs have a common electronic debounce circuit with a debounce time freely programmable.

The MT3923 has 32 digital high side switches with galvanic isolation from the computer system by optocoupler. 
The outputs are also isolated against each other in groups of four outputs. All outputs are protected against shortcircuit and thermal overload. The output drivers are capable of driving 0.5A per channel continuous. A hardware watchdog clears all outputs in case of trigger fail. The MT3923 has 8 digital TTL inputs/outputs. USB 2.0 are placed on the board in addition. All I/O available on the J2 rear I/O connector.

Key features
  • 32 digital inputs (24V)
  • 32 digital outputs (24V, 0,5A)
  • 8 digital inputs/outputs (TTL)
  • USB 2.0.
 Technical Data
I/O                           

  • USB
    USB 2.0 port on the J2 rear I/O connector
  • 24 V signal voltage on the J2 rear I/O connector
    32 digital inputs/outputs
    Optocoupler for galvanic isolation
    All inputs isolated to each other in groups of four inputs
    Programmable electronic debounce circuit (7µs to 440ms)
    Current per output 0.5A
    Outputs are short-circuit protected
    Outputs are isolated to each other in groups of four outputs
    Outputs protected against thermal overload
  • TTL-level signal voltage on the J2 rear I/O connector
    8 digital input/output
MCU

  • STM32F207
    32-bit Cortex M3
    Operating Frequency: 120 MHz
    Flash: 1 Mbytes

Miscellaneous 

  • CompactPCI® J1 connector are assembled for power supply
  • CompactPCI® J2  rear I/O connector for digital I/O and USB
Electrical Specifications 

  • Supply voltage/power consumption:
    +5V (-3%/+5%), 8.5mA max.
    +3.3V (-3%/+5%), 250 mA max.  
Mechanical Specifications 

  • Dimensions: conforming to CompactPCI® specification for 3U 4HP boards
  • Weight: 200g 
Environmental Specifications

  • Temperature range (operation): -40..+85°C
  • Temperature range (storage): -40..+85°C
  • Relative humidity (operation): max. 95% non-condensing
  • Relative humidity (storage): max. 95% non-condensing
  • Altitude: -300m to + 3,000m
  • Shock: 15g/11ms
  • Bump: 10g/16ms
  • Vibration (sinusoidal): 2g/10..200Hz
  • Conformal coating on request
MTBF 
  • 300 000 h @ 40°C (derived from MIL-HDBK-217F)
Software Support
  • Windows® (Windows® XP, Windows® 7), Linux


Documentation

MT3923- : 1.6