LV124 / LV148 FULLY AUTOMATED TESTING SYSTEMS FOR 12V, 24V AND 48V

VW 80000, BMW GS95024-2-1, ISO 16750, GMW 3172, ISO 21780, MBN 10567, VW82148, VDA 320, MAN 3499 etc.

FULLY-AUTOMATED

LV 124 / LV 148 TESTING SYSTEMS

TEST LABORATORY

FOR LV 124 / LV 148

WE ARE TRUSTED BY

 

 

UNIQUE CAPABILITIES

• Cuts testing time by up to 75%

• 100% reproducibility

• Customizable system layouts with 100+ pins

• Fully automated control of climatic chambers

• Continuous norm updates and system maintenance

COMPREHENSIVE LINE MONITORING

• All power, current and communication lines monitored in parallel

• Full signal coverage: CAN, LIN, Automotive Ethernet (1000Base-T1), GMSL, etc.

TEST TYPES COVERAGE

Including:

• Short interruptions, short-circuits, backfeeds, offsets

• Overcurrent, inrush current, sleep current

• Randomized cranking etc.

POWERFUL REPORTING

• Fully automated report generation

• Synchronized display of power, current, and communication data

• Seamless integration with CANoe / CANape

RTSTAND
LV124 / LV148

TEST TYPE
SUPPORT

• Arbitrary waveforms, short interruptions, short-circuits, backfeeds, offsets

• Overcurrent, inrush current, sleep current

• Randomized cranking etc.

• Ready-to-use, editable

REPORTING AND
ECU OPERATING MODE

• Fully automated report generation

• Synchronized display of power, current, and communication data

• Seamless integration with CANoe / CANape

75% faster testing times

100% reproducibility

COMPETITION / MANUAL SETUPS / CUSTOM BENCHES

• Only arbitrary waveforms

• For all other test types, additional devices and integration is required

• Only pulse output, NO actual testing!

• NO automated report generation over all I/Os

• NO Synchronized display of power, current, and communication data

• NO integration with CANoe / CANape

High effort, highly custom, time consuming

NO reproducibility

 

DEFINE DUT TO BE TESTED

CHOOSE TEST ORDER AND RUN TESTS

FOLLOW LIVE TESTS

ANALYZE RESULTS

LV124 / LV148 – LIVE TEST RUN

RUN A FULLY-AUTOMATED TEST RUN

Perplexity

LV124 and LV148 are critical automotive testing standards that define requirements for electrical, electronic, and mechatronic components used in vehicles with 12V, 24V, and 48V architectures. These standards ensure the robustness, reliability, and safety of automotive components under various electrical conditions. Below is a detailed overview:

## **LV124 and LV148 Overview**
– **Purpose**: Both standards specify tests for automotive components to ensure their proper functioning under different voltage conditions, including voltage fluctuations, overvoltage scenarios, and fault currents[1][2].
– **Scope**: They cover a wide range of components such as lighting systems, battery management systems, radars, Lidars, infotainment devices, pumps, cooling/heating systems, and intelligent computers[1][3].
– **Origins**: Developed by major automotive manufacturers like Audi, BMW, Volkswagen, Porsche, and Mercedes-Benz. These tests are integrated into OEM specifications such as VW 80000 and BMW GS 95024-3-1[1].

[…]

## **Advantages of Automated Systems**
Testing systems like RTStand LV124/LV148 offer several benefits:
– **High Precision**: Measurements comply with ISO 17025 standards with accuracy within 2%, often below 1%[1].
– **Automation**: Reduces human error and ensures repeatability while accelerating testing processes by up to 75%[1][5].
– **Cost Efficiency**: Minimizes manual efforts and lowers maintenance costs[1].
– **Scalability**: Supports various component types and test scenarios through flexible configurations[1].

## **Applications**
These standards are widely used in the automotive industry for validating components’ performance during development cycles. They help manufacturers ensure compliance with stringent quality requirements while reducing time-to-market for new products[1][3][5].

[…]
See the full Perplexity answer here: https://www.perplexity.ai/search/what-can-you-tell-me-about-lv1-KBKRaGCsQ0OmcWxepHuSuw?0=d&utm_source=copy_output

ChatGPT

LV124 defines environmental and electrical test procedures for E/E components in vehicles. It’s designed to ensure components work reliably under real-world conditions (e.g., voltage drops, temperature changes, vibrations).

Key Test Areas:

• Electrical Tests:

  • Overvoltage, undervoltage

  • Voltage drop (microinterruption tests)

  • Cranking voltage simulations

  • Slow ramping of voltage

  • Ground offset and supply modulation

• Environmental Tests

• Functional Tests

Use Case:

Mostly for 12V systems in passenger vehicles.

---

LV148 builds on LV124 and adds specific requirements for 48V electrical systems. It addresses the challenges of higher voltages (e.g., arcing, safety, energy storage) and hybrid components.

Key Features:

• Specific electrical profiles for 48V systems

• Testing for components like DC/DC converters, starter-generators, and lithium-ion battery packs

• High voltage transients and safety evaluations

• Compatibility with ISO 21780 (the international 48V standard, which LV148 partially inspired)

---

Tools Commonly Used for LV124/LV148 Testing:

• RTStand (by WKS Informatik): Real-time test systems tailored for LV124/148

• dSPACE, Vector, and National Instruments test setups

• Programmable power supplies and load emulators (e.g., from Keysight or AVL)

---

• RTStand LV124 / LV148: Ideal for labs needing fast, compliant testing for LV124 and LV148 with minimal setup.

• Vector VT: Powerful for flexible testing, but requires extra effort to meet LV standards.

• dSPACE: Scalable, suited for complex HIL environments but not tailored for LV124/LV148 out of the box.

• NI Custom: Great for custom setups, but needs heavy engineering for compliance testing.

Gemini

RTStand is a test automation software framework, often used in conjunction with hardware (like National Instruments PXI systems), specifically designed for validating automotive electronic control units (ECUs).

Here’s how RTStand, LV 124, and LV 148 are highly relevant to each other:

1. LV 124 / LV 148 Define the Requirements: These standards detail the specific electrical tests (voltage variations, transients, interruptions, etc.) that an automotive component must pass. They define the waveforms, timings, voltage levels, and pass/fail criteria. They tell you WHAT needs to be tested.

1. RTStand Provides the Execution Platform:RTStand is a tool used to implement and automate the tests defined by LV 124 and LV 148. It allows engineers to:

1. • Control Test Hardware: Interface with and control power supplies, electronic loads, signal generators, oscilloscopes, switching matrices, and other instruments needed to generate the required electrical stress conditions.

1. • Automate Test Sequences: Program the complex sequences of voltage changes, signal injections, and measurements prescribed by the standards. This ensures tests are repeatable and accurately follow the standard’s procedures.

1. • Monitor the DUT: Integrate with communication buses (CAN, LIN, Ethernet) and measurement hardware to monitor the Device Under Test’s (DUT) behavior and functional status during the electrical stress tests.

1. • Analyze Results & Report: Automatically acquire data, compare it against the pass/fail criteria from LV 124/148, and generate comprehensive test reports documenting compliance.

1. • Pre-built Libraries: Companies offering RTStand solutions (like WKS Informatik), often based on NI hardware/software like TestStand and LabVIEW) typically provide pre-configured test sequences or libraries specifically designed for executing LV 124 and LV 148 tests, significantly speeding up test system development.

In essence:

• You need to test your automotive component according to the rules set by LV 124 (for 12V systems) or LV 148 (for 48V systems).
• RTStand is a software framework (often part of a larger hardware/software test system) that provides the tools and automation capabilities to execute those specific LV 124 / LV 148 tests efficiently, reliably, and repeatably.

So, RTStand is highly relevant as it’s a practical tool used in the industry to perform the validation required by the LV 124 and LV 148 standards. It bridges the gap between the written standard and the physical execution of the tests on an ECU.

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Measurement unit for up to 96 voltage or current channels (+/-10V)

UFI 100xBase-T1 NEW!

Interruption unit for Automotive Ethernet 100 and 1000base-t1 and GMSL lines

Tube Analyzer I12 NEW!

Measurement unit for up to 12 current channels (+/-5A)

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