Fluke CNT-91 Timer Counter Repair

Description

Fluke CNT-91 Timer/Counter Repair

The Fluke CNT-91 is a high-performance timer/counter/analyzer — a benchtop instrument that measures frequency, period, time interval, and more with very high resolution and statistics for RF, electronics, and calibration work. Its accuracy lives in the timebase reference and the counting/measurement circuitry, which is where service and calibration focus.

FlukeMeterRepair.com repairs and calibrates the Fluke CNT-91 for calibration labs and electronics shops.

Common Fluke CNT-91 problems we fix

• Timebase / frequency-reference drift — the reference out of spec, causing inaccurate measurements, recalibrated against standards.
• Input / counting-circuit faults — a channel not counting or triggering correctly, repaired.
• A function dead — a measurement mode failed, repaired.
• Communication / interface faults — the GPIB/USB/remote interface not connecting, repaired.
• Display or power faults.

FAQs

My CNT-91 measures inaccurately — fixable? Yes. Timebase and input faults are repairable, then the counter is recalibrated against our standards so frequency and interval measurements are accurate, with a NIST-traceable certificate.

Is the timebase verified? Yes — checked against our standards.

Every repair includes NIST-traceable calibration and a 90-day parts-and-labor warranty. Email us or request service.