Description
Fluke PM6681 Counter/Timer Repair and Calibration
The Fluke PM6681 is a high-resolution universal counter/timer — a precision instrument that measures frequency, period, time interval, and phase with very high resolution against a stable timebase, for lab and metrology use. As a precision frequency/time instrument, its faults concentrate in the input/conditioning channels, the timebase/reference, and the counting/measurement electronics.
June Company repairs and calibrates the Fluke PM6681 for calibration labs and metrology teams.
Common Fluke PM6681 problems we fix
- Timebase / reference drift — the internal reference drifting so frequency/time readings are off, recalibrated against standards.
- Input-channel faults — an input not triggering or conditioning the signal correctly, repaired.
- Counting / measurement faults — the counting electronics producing wrong results, repaired.
- Display or interface faults — repaired.
- Won’t power on — power faults.
FAQs
My PM6681 frequency readings drifted — fixable? Yes. Timebase and input faults are repairable, then the counter is recalibrated so frequency and time-interval measurements are accurate, with a NIST-traceable certificate.
Is the timebase verified? Yes — checked against our reference standards.
Every repair includes NIST-traceable calibration and a 90-day parts-and-labor warranty. Email us or submit a service request.




Reviews
There are no reviews yet.