Fault Injection System (FIS)
A modular system that specifically generates errors to prove the quality of electronic components
In order to test vehicle components in accordance with OEM specifications or valid standards such as LV 124, LV 148, ISO 16750 and ISO 7637, solutions are required to reverse the polarity of the signal lines of the devices under test (DUT) during operation, to briefly interrupt them and to short-circuit them to each other.
Especially for the automotive video link routes, TZ offers a remote controllable solution to automatically introduce these errors on coaxial signals.
With our “Fault Injection System” product group, we offer the following functions:
- Closed signal line (no error state)
- Open signal line (interruption)
- Short circuit to GND
- Short circuit according to VBAT
- Short circuit after shield
TZ Electronic Systems GmbH offers various fault injection systems. If your combination of requirements is not included, we will be happy to implement a solution that meets your specific requirements. Request a concrete offer in our online store, download our complete product overview or contact our technical customer service for non-binding advice on our comprehensive test solutions.
Applications
- Automated testing of vehicle components during development
- Environmental tests
- Hardware-in-the-loop tests (long-term tests)
Introduction
By reproducing controlled errors across multiple interfaces, the system supports reliable validation, robustness testing and the development of fault-tolerant architectures, making it an indispensable tool for modern test environments in automotive and embedded electronics.
investment value.
Werden mehr als 8 Modulsteckplätze benötigt, können mehrere FIS0100-Geräte miteinander verbunden werden, was eine beliebige Skalierbarkeit ermöglicht.
Features
- Automated error injection for all data connections, including high-speed data connections
- Reproducible error scenarios for the robust validation and verification of communication systems
- Modular architecture for various interfaces, protocols and sectors (automotive, aerospace, industry)
- Flexible switching matrix for programmable manipulation of data lines
- Software automation for test series, endurance tests and complete laboratory integration
- Expandable platform for specific customer and project requirements
- Robust, industrial-grade hardware design for laboratory and field tests
Benefits
Enhance product quality
- Detect a wide spectrum of fault conditions
- Validate every signal path thoroughly for complete fault‑behavior coverage
- Elimination of manual tests through fully automated processes
- Testing of both individual components and complete signal chains for maximum reliability
Accelerate development – achieve faster Time-to-Market
- Modern APIs enable AI-supported test strategies for smarter validation
- A platform-based architecture ensures short lead times and eliminates the need for recurring development of customized test environments
- Optimized workflows reduce development costs and accelerate product release cycles
Reduce development costs
- A reusable architecture minimizes recurring development costs
- Modular and fully expandable platform that grows with the project requirements
- Scalable investment model – you only purchase the modules required for your application
Chassis
- The FIS0100 is designed as a subrack in a 19-inch housing with a height of 1 U.
- The chassis has 8 slots. The modules can be combined as required depending on the current test task.
- Extended/large modules can occupy 2, 3 or even 4 slots. In such cases, the number of simultaneously available slots is reduced accordingly, while enabling more complex fault capabilities or higher power handling on those channels.
- This approach preserves the reusability of existing modules and allows the system to scale with evolving interfaces and test requirements.
- By default, each FIS0100 has a USB control port. This enables a connected PC to control and automate the FIS0100 and its integrated modules.
Ethernet Control
TZ offers the option of controlling the FIS system via a network interface. A modern REST API provided by the FIS0100 enables remote control of all devices in the network. This option is particularly recommended for larger systems.
Manual control
Sometimes it can also be advantageous to trigger error states manually. For this purpose, TZ offers the option of connecting a touch monitor to the FIS0100. This enables convenient operation of the built-in modules at the touch of a finger.
Modules
The FIS0100 system offers a wide range of modules designed for various video and data interfaces. A broad selection of common connectors is already available as standard, ensuring immediate readiness for use in laboratory environments and vehicle-related test setups.
Flexible interface modules
The system supports various module types for video and data interfaces, enabling seamless testing of different electronic components, control units and signal paths.
Custom alias naming and front panel labeling
An individual alias name can be assigned to each module. If desired, these alias names can also be engraved directly on the front panel of the module, which ensures quick identification and improved user-friendliness in larger test configurations.
Different switching states depending on use case
Depending on whether a module is used to test
- a single component or
- the connection between two components,
the modules offer a different number of switching states. This allows precise control of the signal routing and enables realistic, repeatable test scenarios.
Advanced function modules
Some modules offer extended functions, including
- Measurement of the power consumption of connected components
- Injection of PoC voltages (Power-over-Coax)
- Additional optional diagnostic or monitoring functions
These capabilities not only support basic connectivity tests, but also in-depth electrical and functional analyses.
Customer-Specific connector modules
If a customer requires a non-standard or proprietary connector, TZ can design and manufacture customized modules quickly and with minimal effort. Customized modules can be tailored to meet specific electrical,
mechanical or functional requirements.
- Ready to use and easy to replace
- All modules are delivered fully assembled and ready for immediate use.
- If needed, customers can exchange or replace modules themselves, allowing maximum flexibility when adapting the FIS0100 system to new test setups or evolving project requirements.
Module Overview
Basic Modules to inject Failures on DUT side
• Open
• DUT short to “GND”
• DUT short to “+VBAT”
• DUT short to “Common”
• DUT short to “Shield”
FDP-Link III/IV
APIX
GVIF
• Open
• DUT short to “GND”
• DUT short to “+VBAT”
• DUT short to “Common”
• DUT short to “Shield”
FDP-Link III/IV
APIX
GVIF
• DUT D+, DUT D- Open
• DUT D+ , DUT D- short to „GND“
• DUT D+, DUT D- short to „+VBAT“
• DUT D+, DUT D- short to „Common“
• DUT D+, DUT D- short to “Shield“
• Short to each other (DUT D+ to DUT D-)
FDP-Link III/IV
APIX
GVIF
100/1000 BASE-T1
2.5/5 GBASE-T1
• Open
• DUT short to “GND”
• DUT short to “+VBAT”
• DUT short to “Common”
• DUT short to “Shield”
FDP-Link III/IV
APIX
GVIF
• Open
• DUT short to “GND”
• DUT short to “+VBAT”
• DUT short to “Common”
• DUT short to “Shield”
FDP-Link III/IV
APIX
GVIF
• DUT D+, DUT D- Open
• DUT D+ , DUT D- short to „GND“
• DUT D+, DUT D- short to „+VBAT“
• DUT D+, DUT D- short to „Common“
• DUT D+, DUT D- short to “Shield“
• Short to each other (DUT D+ to DUT D-)
FDP-Link III/IV
APIX
GVIF
Advanced Modules to inject Failures on DUT and IO side
• Open
• Filtered Open (for
current measurement without shunt)
• DUT / IO short to “GND”
• DUT / IO short to “+VBAT”
• DUT / IO short to “Common”
• DUT / IO short to “Shield”
• Open
• Filtered Open (for
current measurement without shunt)
• DUT / IO short to “GND”
• DUT / IO short to “+VBAT”
• DUT / IO short to “Common”
• DUT / IO short to “Shield”
• Open
• Filtered Open (for
current measurement without shunt)
• DUT / IO short to “GND”
• DUT / IO short to “+VBAT”
• DUT / IO short to “Common”
• DUT / IO short to “Shield”
• Open
• Filtered Open (for
current measurement without shunt)
• DUT / IO short to “GND”
• DUT / IO short to “+VBAT”
• DUT / IO short to “Common”
• DUT / IO short to “Shield”
• Open
• Filtered Open (for
current measurement without shunt)
• DUT / IO short to “GND”
• DUT / IO short to “+VBAT”
• DUT / IO short to “Common”
• DUT / IO short to “Shield”
• Open
• Filtered Open (for
current measurement without shunt)
• DUT / IO short to “GND”
• DUT / IO short to “+VBAT”
• DUT / IO short to “Common”
• DUT / IO short to “Shield”
Digital Interfaces
• CAN H Open
• CAN L Open
• CAN H/L Open
• CAN H short to „GND“
• CAN L short to „GND“
• CAN H/L short to „GND“
• CAN H short to „+VBAT“
• CAN L short to „+VBAT“
• CAN H/L short to „+VBAT“
• CAN H short to „COMMON“
• CAN L short to „COMMON“
• CAN H/L short to „COMMON“
• Short to each other
(CAN H to CAN L)
• 120Ohm Termination on Default
Line on/off (Closed termination on)
ISO 11898-2, ISO 11898-3)
CAN FD
Main Controller
Optional extensions
