3. Software-Defined Rig

• Introduction

• Interface Multiplexer Module (MUX)

  • Features

  • Specifications

  • Functional diagram

  • Connectors

• Universal Input / Output Module (UIO)

  • Features

  • Specifications

  • Channel Performance

  • Functional diagram

  • Connectors

• Electronic Load Module (ELM)

  • Features

  • Specifications

  • Channel Performance

  • Functional diagram

  • Connectors

• Compliance

• Working with SODA Validate Studio

• Programmatic control via SDK

3.1. Introduction

The Software-Defined Rig (SDRig) is a modular, rack-mounted testing platform tailored for automotive HIL simulations. Modules include:

• Interface Multiplexer (MUX) for network simulation (CAN, LIN)

• Universal Input / Output (UIO) for analog/digital signal simulation

• Electronic Load Module (ELM) for actuator/load emulation

Each module can operate in the rig or standalone over 100Base-T Ethernet. The system supports power distribution and flexible signal routing through a backplane PCB.

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3.2. Modules at a glance

• MUX — 8× CAN FD channels (up to 5 Mbps, 8 external + 16 backplane), 1× LIN 2.0; electromagnetic relay matrix for interaces routing; 100Base‑T Ethernet.

• UIO — 8× universal channels: voltage in/out (0–24 V), PWM in/out (20 Hz–5 kHz), current loop Tx/Rx (0–20 mA); high‑accuracy signal simulation; Ethernet.

• ELM — 8× universal load channels (current sink 0–10 A @ 0–24 V), voltage in/out 0–24 V; 4× 24 V relay sourcing; up to 200 W/channel, 600 W total; Ethernet.

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3.3. Compliance

All modules are compliant with:

• RoHS Directive 2011/65/EU + 2015/863/EU

• WEEE Directive 2012/19/EU

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3.4. Interface Multiplexer Module (MUX)

The Interface Multiplexer is a module designed for simulating vehicle networks and peripheral devices connected to Electronic Control Units (ECUs) through digital interfaces. Its primary feature is the CAN FD multiplexer, implemented as a matrix of electromagnetic relays, capable of connecting any CAN ECU to the CAN rig.

3.5. Features

• 8× Universal CAN FD Channels (up to 5 Mbps, 8 external + 16 backplane)

• 1× LIN 2.0 channel

• Electromagnetic relay matrix for routing

• Ethernet 100Base‑T interface

3.6. Specifications

• Dimensions: 245 × 260 × 36 mm

• Weight: 1010 g

• Voltage Supply: 26–28 V DC

• Supply Current: 0.3 A

• Nominal Power Consumption: 2.5 W

• Startup Power: 4.8 W

• Operating: 0–50°C, ≤80% RH @35°C

• Storage: −40 to +70°C

• Warm‑up: 30 min

3.7. Functional diagram

3.8. Connectors

3.8.1. R1 – CAN Channels

Pin	Signal	Description
R1.1–R1.16	CANxH/L	8× CAN FD H/L pairs

3.8.2. R2

Pin	Signal	Description
R2.8	LIN	LIN 2.0 (slave only)
R2.2	24V	Power supply
R2.3	GND	Ground

3.8.3. LAN / VDD / DEBUG

• LAN: 100Base‑T Ethernet

• VDD: 30 V DC input for standalone mode

• DEBUG: Reserved for calibration

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3.9. Universal Input / Output Module (UIO)

The Universal Input / Output is a module designed for simulating analog vehicle sensors. Its primary feature is the universal pin, capable of setting/measuring voltage, generating PWM, input capture, and being a current loop transmitter and receiver.

3.10. Features

• 8× Universal I/O Channels:

  • Voltage measurement/setting: 0–24 V

  • PWM Input/Output: 20 Hz – 5 kHz

  • Current loop Tx/Rx: 0–20 mA

• High accuracy signal simulation

• Ethernet interface

3.11. Specifications

• Dimensions: 245 × 260 × 36 mm

• Weight: 940 g

• Voltage Supply: 26–28 V DC

• Supply Current: 0.3 A

• Power Consumption: 2.5 W nominal / 4.8 W startup

• Operating: 0–50°C, ≤80% RH @35°C

• Storage: −40 to +70°C

• Warm‑up: 30 min

3.11.1. Channel Performance

• Voltage In: 0–24 V

  • ±20 mV [0–2 V], ±1% [2–24 V]

  • Processing time: 10 ms

• Voltage Out: 0–24 V

  • ±20 mV [0–2 V], ±2% [2–24 V]

  • Settle time: 10 ms

• Current Loop In/Out: 0–20 mA

  • ±1% accuracy, 20 ms settle time

• PWM / ICU:

  • Frequency: 20 Hz – 5 kHz

  • Accuracy: ±1% (freq), ±1–2% (duty)

  • Voltage: 5 V ± 100 mV

  • Settle time: 250 ms

3.12. Functional diagram

3.13. Connectors

3.13.1. R4 – Universal I/O

Pin	Signal	Description
R4.1	UIO8	Voltage/PWM/Current Loop (all modes)
R4.3	UIO7	Same as UIO8
R4.5	UIO6	Same as UIO8
R4.7	UIO5	Same as UIO8
R4.9	UIO4	Same as UIO8
R4.11	UIO3	Same as UIO8
R4.13	UIO2	Same as UIO8
R4.15	UIO1	Same as UIO8
R4.2, R4.4, …, R4.16	GND	Ground

3.13.2. LAN / VDD / DEBUG

• LAN: 100Base‑T Ethernet

• VDD: 30 V DC input

• DEBUG: Reserved for calibration

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3.14. Electronic Load Module (ELM)

The Electronic Load module is designed for simulating analog vehicle actuators and loads of ECU. Its primary feature is the MOSFET module, capable of dissipating up to 200 W on each channel and up to 600 W on all channels.

3.15. Features

• 8× Universal Load Channels:

  • Current sinking: 0–10 A @ 0–24 V

  • Voltage measurement/setting: 0–24 V

• 4× Relay sourcing channels (24 V / 100 mA)

• Max: 200 W/channel, 600 W total

• Ethernet interface

3.16. Specifications

• Dimensions: 245 × 260 × 144 mm

• Weight: 5250 g

• Voltage Supply: 26–28 V DC

• Supply Current: 0.3 A

• Nominal Power Consumption: 2.5 W

• Startup Power: 4.8 W

• Thermal Limit: 200 W/channel, 600 W total

• Operating: 0–50°C, ≤80% RH @35°C

• Storage: −40 to +70°C

• Warm‑up: 30 min

3.16.1. Channel Performance

• Voltage In: ±20 mV [0–2 V], ±1% [2–24 V]

• Voltage Out: ±20 mV [0–2 V], ±2% [2–24 V]

• Current In: ±5%, range 0.1–10 A

• Response Time: Voltage 10 ms, Current 20 ms

3.17. Functional diagram

3.18. Connectors

3.18.1. R2 – Load Channels 1–4

Pin	Signal	Description
R2.16–R2.14	EL1–EL4	Universal Load Channels
others	GND	Ground

3.18.2. R3 – Relay Sourcing

Pin	Signal	Description
R3.12–R3.6	DOUT1–DOUT4	24 V sourcing (relay)
R3.1–R3.3	24 V	Source voltage
R3.11	GND	Ground

3.18.3. R4 – Load Channels 5–8

Pin	Signal	Description
R4.16–R4.14	EL5–EL8	Universal Load Channels
others	GND	Ground

3.18.4. LAN / VDD / DEBUG

• LAN: 100Base‑T Ethernet

• VDD: 30 V DC input

• DEBUG: Reserved for calibration

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3.19. Compliance

All modules are compliant with:

• RoHS Directive 2011/65/EU + 2015/863/EU

• WEEE Directive 2012/19/EU

Disposal & Recycling: do not discard with general waste. Use certified recycling services.

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3.20. Working with SODA Validate Studio

SDRig is pre‑integrated with SODA Validate Studio for lab‑friendly, role‑based testing:

• Create and edit test environments (signal maps, routing, datasets).

• Author tests with the AI assistant and organize suites.

• Run executions on the rig (single or multiple VLAN‑bound instances).

• Browse and download reports and logs.

Documentation: See the SODA Validate Studio docs → Validate Studio

3.21. Programmatic control via SDK

You can control SDRig directly from your own tools and CI pipelines using our SDKs:

• C++ SDK: https://github.com/soda-auto/soda-validate-sdrig-sdk-cpp — build with CMake; see the repository README for targets and examples.

• Python SDK: https://github.com/soda-auto/soda-validate-sdrig-sdk-py — use in virtualenvs or docker; see the repository README for usage and examples.