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MTS_Specification_EN.md

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📘 MTS – Modular Test System: Specification

Version: 1.1 Author: András Nagy License: CC BY-NC 4.0 Date: 04.05.2025

📐 1. Mechanical Dimensions

1.1 PCB Size

  • Total width: 159.95 mm
  • Total height: 100.00 mm
  • PCB thickness: 1.6 mm

1.2 Mounting Holes

  • 2 mounting holes Ø 3.2 mm

  • Positions:

    • Bottom left: 6 mm from left / 6 mm from bottom
    • Top right: 6 mm from right / 5.5 mm from top

1.3 Keepout Zones

  • 5 mm at top and bottom edges (for guide rails)

🔌 2. Connectors

  • Type: DIN 41612, Type C (ZB), 2x16 Pins
  • Footprint: DIN41612_02x16_ZB
  • Mounting: vertical at the right PCB edge
  • Connector: Pin header on module, socket on CPU board

📍 3. Pin Assignment

Pin Signal Description
a1 Trigger Trigger input
b1 CAN_H CAN Bus High
b2 CAN_L CAN Bus Low
b3 I2C_BUS_SDA I²C Data line
b4 I2C_BUS_CLK I²C Clock line
a11–a12 +12 V Supply +12 V (1 A)
b11–b12 –12 V Supply –12 V (0.2 A)
a13–a14 +3.3 V Ext Supply 3.3 V (0.5 A)
a15–a16 +5 V Ext Supply 5 V (1 A)
b13–b16 GND Ground

Unassigned pins may be used for specific projects.

⚡ 4. Power Supply

Voltage Range Max. Current
+12 V 11.5–12.5 V 1 A
–12 V –11.5– –12.5 V 0.2 A
+3.3 V 3.2–3.4 V 0.5 A
+5 V 4.9–5.2 V 1 A

⚠️ No back-feeding from modules!

🖥️ 5. Communication Buses

5.1 I²C

  • Standard Mode: 100 kHz
  • Pull-up resistors on CPU board

5.2 CAN

  • ISO 11898 compatible
  • Galvanic isolation (optional)
  • Termination: 120 Ω on CPU board

5.3 EtherCAT

  • High-speed real-time communication
  • EtherCAT according to IEC 61158 standard
  • RJ45 connector on CPU board
  • Supports data rates up to 100 Mbit/s
  • Dedicated EtherCAT modules for fast data acquisition and control

🧩 Module Categories

Type Function
CPU board Central control unit (e.g., Raspberry Pi CM4)
IO cards Relays, Optocouplers, PWM, Digital Inputs
DAQ cards ADC cards, DAC cards, Sensor interfaces
Interface cards EtherCAT Slave, CAN bus, RS485/Modbus, UART
Power cards DC/DC converters, Load drivers, Fuse and monitoring cards
Wireless cards Wi-Fi/Bluetooth, LoRa/LPWAN
Special cards Calibration, Multiplexer, Signal processing cards

📄 7. License

This project is licensed under Creative Commons Attribution-NonCommercial 4.0 International (CC BY-NC 4.0)

Commercial use requires a separate license agreement.

© 2025 Styria Electronics