Accredited calibration · Automotive transients

ISO 7637 transient generator calibration, in your lab

Pulse amplitude, rise and fall time, pulse duration and repetition time of ISO 7637-2 and -3 generators, load dump simulators and ISO 16750-2 supply-variation sources measured on site under LAB Support Ltd.'s A2LA accredited ISO/IEC 17025 scope.

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Why it matters

OEM test plans hang on pulse parameters that only a calibration verifies

Pulses 1, 2a, 2b, 3a, 3b, 4 and load dump pulse 5 each have amplitude, rise time, duration and source impedance defined in ISO 7637-2, and the capacitive and inductive coupling clamps of ISO 7637-3 add their own. Manufacturer specifications from VW, Ford, GM, Stellantis and the Japanese OEMs reference them with tighter tolerances. Automotive laboratories are audited on these certificates.

  • Pulse 1 to 4 and load dump pulse 5 amplitude, rise and fall time, duration
  • Repetition time, burst timing and source impedance
  • ISO 7637-3 CCC and ICC clamp outputs, fast and slow transients
  • ISO 16750-2 supply-voltage variation and battery simulator output
ParameterRangeCommon methods and standards
Surge and load-dump pulse peak amplitude1 V to 1000 VISO 7637-2, ISO 16750-2, oscilloscope with divider
Burst pulse peak amplitude, pulses 3a and 3b1 V to 1000 VISO 7637-2, oscilloscope
Pulse rise and fall time, duration, repetition time0.5 ns to 60 sISO 7637-2, ISO 7637-3
Capacitive and inductive coupling clamp outputWith the generatorISO 7637-3
Battery simulator and DC source output1 mV to 80 V, DC current to 200 AISO 16750-2, DMM, oscilloscope
Voltage transient emission switch timing0.1 s to 700 msISO 7637-2 Annex

The methods and standards shown are the ones most commonly requested. Within each parameter and range listed on the accredited scope, other calibration methods and standard editions can be supported under the flexible-scope provisions of LAB Support's A2LA accreditation. The measurement uncertainty for each parameter is stated on the certificate. Field calibration is included in the scope for every line above.

Instruments we calibrate

Models we calibrate most often

From our own calibration records. Any instrument within the scope can be calibrated; these are the ones we see most.

Teseq NSG 5500, NSG 5600 with PA 5740, PA 5840 Teseq AES 5501, MS 5501 Teseq INA 5530 clamps EM TEST UCS 200N50, N100, N150, N200 EM TEST LD 200N load dump EM TEST VDS 200Q, 200R, RDS 200N EM TEST AutoWave, PFS 200N EMC Partner TRA 3000 and others
On site

How the visit runs

Send the listGenerator, battery simulator and clamps, plus the OEM specifications you test to.
We come to youThe team brings a calibrated oscilloscope, high-voltage divider, current transducer and the ISO loads.
Measure in placeEach pulse type is captured at the levels in your test plan, including at the clamp outputs.
Certificate on siteISO/IEC 17025 certificate with each parameter against the ISO or OEM tolerance, uncertainty and traceability.
Frequently asked

Questions we are asked

Which editions of ISO 7637 are covered?

ISO 7637-2 (2004 and 2011) and ISO 7637-3 (2007 and 2016), plus ISO 16750-2. Tell us which your test plan references and the certificate states it.

Do you calibrate to manufacturer specifications such as LV 124?

Yes. Pulse parameters are measured against ISO 7637 and, where you supply the OEM specification, its tolerances are reported as well.

Is the battery simulator calibrated too?

Yes. Output voltage, current capability and the dynamic waveforms of ISO 16750-2 are measured in the same visit.

Which countries do you cover on site?

Malaysia, Singapore and Vietnam, with Penang as the base. Other locations on request.

Tell us what you need to test

We reply within one working day with a quote or a plan.

Contact us