3. Software-Defined Rig Documentation

3.1. Table of Contents

Introduction
Interface Multiplexer Module (MUX)
Universal Input / Output Module (UIO)
Electronic Load Module (ELM)

3.2. 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.

3.3. 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 CANFD multiplexer, implemented as a matrix of electromagnetic relays, capable of connecting any CAN ECU to the CAN rig.

3.3.1. Features

8x Universal CAN FD Channels (up to 5 Mbps, 8 external + 16 backplane)
1x LIN 2.0 Channel
Electromagnetic relay matrix for routing
Ethernet 100Base-T interface

3.3.2. 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

3.3.3. Functional diagram

3.3.4. Connectors

3.3.4.1. R1 – CAN Channels

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

3.3.4.2. R2

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

3.3.4.3. LAN / VDD / DEBUG

LAN: 100Base-T Ethernet
VDD: 30V DC input for standalone mode
DEBUG: Reserved for calibration

3.4. 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.

3.4.1. Features

8x Universal I/O Channels:
- Voltage measurement/setting: 0–24V
- PWM Input/Output: 20 Hz – 5 kHz
- Current loop Tx/Rx: 0–20 mA
High accuracy signal simulation
Ethernet interface

3.4.2. 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

3.4.2.1. 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: 5V ± 100 mV
- Settle time: 250 ms

3.4.3. Functional diagram

3.4.4. Connectors

3.4.4.1. 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

3.4.4.2. LAN / VDD / DEBUG

LAN: 100Base-T Ethernet
VDD: 30V DC input
DEBUG: Reserved for calibration

3.5. 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 200W on each channel and up to 600W on all channels

3.5.1. Features

8x Universal Load Channels:
- Current sinking: 0–10 A @ 0–24 V
- Voltage measurement/setting: 0–24 V
4x Relay sourcing channels (24V/100 mA)
Max: 200W/channel, 600W total
Ethernet interface

3.5.2. 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: 200W/channel, 600W total
Operating: 0–50°C, ≤80% RH @35°C
Storage: -40 to +70°C
Warm-up: 30 min

3.5.2.1. Channel Performance

Voltage In: ±20 mV [0–2V], ±1% [2–24V]
Voltage Out: ±20 mV [0–2V], ±2% [2–24V]
Current In: ±5%, range 0.1–10 A
Response Time: Voltage 10 ms, Current 20 ms

3.5.3. Functional diagram

3.5.4. Connectors

3.5.4.1. R2 – Load Channels 1–4

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

3.5.4.2. R3 – Relay Sourcing

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

3.5.4.3. R4 – Load Channels 5–8

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

3.5.4.4. LAN / VDD / DEBUG

LAN: 100Base-T Ethernet
VDD: 30V DC input
DEBUG: Reserved for calibration

3.6. Compliance and Contact

3.6.1. RoHS & WEEE

All modules are compliant with:

RoHS Directive 2011/65/EU + 2015/863/EU
WEEE Directive 2012/19/EU

3.6.2. Disposal & Recycling

Do not discard modules with general waste. Use certified recycling services.

3.6.3. Company Info

SODA.AUTO UK LTD
Company No: 14698049
VAT: 439524868
Address: SODA SDV HUB, Building 211, Heyford Park, Bicester, OX25 5HE, United Kingdom
Contact: matt@soda.auto