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PAR Tester

 


PAR Tester


Overview
Product Issues
Modular Units
Contact
References

Overview

Most OEM environmental specifications (including Electromagnetic Compatibility - EMC):

  • Do not address many contemporary issues - limited value add.
  • "Cookbook" approach (always done it this way) - lots of baggage.
  • Expensive and time consuming to implement.

Product Issues

The PAR tester was developed to address many of these issues:
  • Details in SAE Information Report J2628, (Characterization, Conducted Immunity, July 2007).
  • Based on real world issues often missed in typical Product Assurance/Validation process.
  • Uses relatively simple, low cost techniques and includes many functions in one package (does not require a test laboratory environment).
  • Makes it practical (fast, inexpensive) for Hardware-Software Robustness and Design Margin testing throughout the design process.
  • Enables early detection of issues and a lean testing process.
  • Capability to do many OEM, ISO, etc Conducted Immunity EMC tests.
  • Recreates "real world" transient events (unlike the unrealistic simulations of ISO 7637).
  • Creates other waveforms via a 2 channel Arbitrary Waveform Generator (AWG) and 2 channel DC power amplifier. Fast waveforms use the Electronic Switch module.
  • Evaluates non ideal DUT switch signal inputs via a 4 channel switch simulator that creates random noise on switch transitions. Also simulates non ideal switch impedances.

Modular Units

The PAR tester consists of modular units packaged in a 3U 19 " rack: 1. DC Power Amplifiers:
  • Power Op Amps - switching power supplies.
  • 0-20 KHz, 0-24 volts.
  • Channel 1 = 150 watts (e.g. Battery power)
  • Channel 2 = 50 watts (e.g. Ignition signal)
2. Arbitrary Waveform Generator (AWG):
  • 2 channels
  • PC Controlled via USB
  • Easy to use waveform editor.
3. Electronic Switch, DC voltage source
  • 1us rise/fall time
  • Capability = 10 amps
  • Voltage Source = 1.5 - 20 volts, 1.5 amp (apply to DC amp for more power).
4. Transient Generator: Uses inductors and relays (including chattering relay) to simulate vehicle transients per SAE J2628 and Ford EMC spec. 5. Switch Noise Simulator:
  • Creates random bounce at switch transitions (adjustable)
  • 4 channels, separate or simultaneous activation.
  • Includes non ideal switch impedances.

Contact

Bob Wiebe
(248) 353-0100
bwiebe@geltd.net.

Marlene Bussiere (Sales Department)
(248) 353-0100
mbussiere@geltd.net

References

SAE J2628 (2007), Characterization, Conducted Immunity. Ford EMC Spec ES-XW7T-1A278-AC (www.fordemc.com)




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Global Electronics Limited
21223 Hilltop Southfield, MI 48033
248.353.0100
Fax: 248.353.1274
 

 

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