Frequently Asked Questions

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Frequently Asked Questions

How often should a computerized polygraph system be calibrated?

Question Last Updated on: 8/2/2018

No field calibration or routine service is required for a Lafayette Polygraph System. In the unusual event that service is required, only Lafayette Instrument Company or a factory authorized service technician may service these systems.

Under most circumstances an examiner will notice and correct a transducer or sensor malfunction immediately. Lafayette Instrument Company recommends performing Functionality Checks when the examiner suspects a functionality problem.

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