Quality Control Procedures and Repair of the Ranger
Quality control procedures
All Ranger EZ traffic radars comply with the following quality control conditions:
1. All parts and components are ordered to commercial high reliability, accuracy, and performance
specifications.
2. Only vendors that meet MPH’s standards for quality are selected to supply parts and materials.
3. All electrical and electronic components are utilized within their performance specifications, and adequate
safety factors measures are provided for voltage, current, and heat dissipation.
4. Assembled circuit boards are individually tested before incorporation into higher level assemblies.
5. Each traffic radar is tested in an anechoic chamber for proper performance and compliance to accuracy
requirements.
6. Each radar is tested (“burned-in”) for not less than twelve hours. After completion of burn-in testing, the unit
is again tested in the anechoic chamber to assure product excellence.
7. Each radar is road tested under conditions encountered in actual operation.
8. Tuning forks are individually tested using calibrated equipment with traceability to the National Institute of
Standards and Technology. A certificate of accuracy is furnished with each tuning fork.
9. Samples of police traffic radars on the Consumer Product List (CPL) are tested by outside laboratories for
compliance to the requirements specified for Critical Performance Testing (CPT) by the International
Association of Chiefs of Police (IACP).
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