PM 6681R - Fluke Frequency Counters

Fluke PM 6681R Overview

The PM 6681R sets the new standard for measurement and analysis of time intervals, frequency, phase and jitter. For development, calibration, or challenging production test applications, the PM 6681R is the leader.

• Calibrates frequency, time intervals and phase
• 11 digits per second measuring speed
• 50 ps single-shot time interval resolution
• Down to 2 ps averaged time interval resolution
• 8k readings/s to internal memory with 50 ps resolution
• Repetitive sampling rate up to 10 M/s
• High trigger level resolution 1.25 mV
• Very low systematic time error 500 ps
• High phase accuracy to 0.02º
• TimeView PC software including frequency-vs-time, FFT
• Five 10 MHz reference outputs and one 5 MHz output 

The Rubidium reference of the PM 6681R makes this instrument the most accurate frequency reference/counter/calibrator for the calibration of frequency, time or phase.

• High accuracy and short warm-up times
• Calibrates frequency, time or phase
• Calibrates any application specific frequency
• 5 x 10 MHz and 1 x 5 MHz buffered reference output
• 5 year warranty on Rubidium element