AE Techron DSR 100-200 | Pulse 2B and 4

ISO 16750 applies to electric and electronic systems and components for vehicles. ISO 16750-2 more specifically refers to road vehicles and their environmental conditions and electrical equipment testing.  ISO 16750 ISO 16750 focuses on the potential environmental consequences and highligh ts tests and requirements that are recommended for the specific mounting location on the vehicle. Several environmental factors were considered in the creation of the ISO 16750 series including world geography and climate, type of vehicle, vehicle use conditions and operating modes, equipment life cycle, vehicle supply voltage, and mounting location. Types of Testing for ISO 16750 Complience  Testing generator regulator failure Simulating jump start  Superimposing voltage Superimposing sinusoidal voltage Evaluating the effect of momentary drop in supply voltage Completeing frequency sweeping Verifing the DUT reset behaviour at different voltage drops Checking the resistance of the DUT Running other supply voltage tests ISO 16750-2 ISO 16750-2 is a subsection of the ISO 16750 standard in the general category of road vehicles for environmental conditions, electrical equipment testing, and electronic equipment testing. ISO 16750-2 describes the potential environmental stresses and specifies tests and requirements recommended for the specific mounting location on/in the road vehicle. Independent of the mounting location, electrical loads vary based on a vehicle wiring harness and connection system's electrical resistance. Direct current supply voltage Direct current supply voltage is something to consider when authenticating equipment functionality at the minimum and maximum supply voltage: Table 1 - Supply voltage for system devices with 12 V nominal voltage   Code Minimum supply voltage

ISO 7637 is an automotive EMC test standard that outlines testing requirements for simulating electrical transients in road vehicles with 12V or 24 V electrical systems. ATEC carries EMC test equipment designed to meet the test specifications of ISO 7637-2, the latest version of the standard. Read on for more information about ISO 7637, applicable test pulses, and recommended ISO 7637 test equipment. What is ISO 7637? ISO 7637 defines test parameters for the EMC testing of road vehicles, specifically the simulation of electrical disturbances, or transients, in vehicle power supply lines. The standard, which covers both susceptibility and emissions testing, defines proper waveforms for test pulses and lists necessary electrical components. ISO 7637 also offers performance classifications for test pulses based on their frequency, strength, and burst cycle; ratings vary between pulses, and for the 12V or 24V electrical systems of commercial vehicles. Automotive manufacturers across the world rely on ISO 7637 to ensure the electromagnetic compatibility of their electrical systems; it is a common requirement for vehicle component development. Discovering a vulnerability to transients early on in automotive design is essential, as failures during formal EMC testing waste companies’ time and money. ISO 7637 is designed to protect car electronics that are vulnerable to surges from automotive power supplies. Since the advent of EMC testing, manufacturers have developed their own EMC standards in response to the myriad of electrical disturbances to which road vehicles fall victim. ISO, the International Organization for Standardization, developed ISO 7637 as a universal standard that covers as many varieties of automotive transients as possible.   ISO 7637 Subsections ISO 7637 is composed of five parts: ISO 7637-1 Definitions and general considerations ISO 7637-2 Electrical transient conduction along supply lines

The purpose of ISO 7637-2 is to ensure electromagnetic compatibility of passenger and commercial vehicles operating on 12V or 24V electrical systems. ISO 7637-2 requires multiple conducted transients to be coupled onto DC lines to test the compatibility of vehicles. This standard is applicable to both internal combustion engine and electric motor vehicles.   Equipment Required: Transient Generator - HILO CAR TEST 14 Oscilloscope - Tektronix MDO4104C Differential Probe - Probe Master 4234 ISO 7637-2 Test Pulses The following tables show data that highlights Pulse 1, Pulse 2a, Pulse 2b, Pulse 3a, and Pulse 3b. Pulse 1 ISO 7637-2 Pulse 1 is used to simulate the transients created in the case that a motor, or inductive load, is disconnected from the circuit.    Parameters of this pulse can be verified using an oscilloscope and differential probe to meet the specifications below. Pulse 2a ISO 7637-2 Pulse 2a is used to simulate transients that occur when there is a current interruption on a device in parallel with the DUT and caused by the wiring harness inductance. Pulse 2b ISO 7637-2 Pulse 2b is used to simulate transients when a vehicle is turned off, but electric DC motors remain active and serve as a generator. Pulse 3a The pulse 3a is similar to an EFT pulse as seen in IEC 61000-4-4 (HYPERLINK THIS), this transient waveform is simulating switching occuring in a system connected by a wiring harness, in which the load is capacitive or inductive. Pulse 3b Similar to pulse 3a, except opposite polarity. Pulse 3b is another EFT waveform representing switching within a wire harness. These pulses also simulate the scenario in which a fuse is blown.   Pulse 4, 5a, & 5b ISO 7637 Pulse 4, Pulse 5a/5b were removed from the most recent revision of ISO 7637-2 and can be found now in ISO 16750-2.   ISO 7637-2 Test Equipment ATEC recommends the following products for testing