Fluke PM6690 12 digits/s Frequency Counter with 2.7GHz channel & OCXO timebase

Description

One used Fluke PM6690 12 digit per second frequency counter in fair cosmetic and excellent functional condition.  This unit has some screen damage which is noticeable but which doesn't really impair legibility in use (see pictures), and some scratches to the exterior, but the connectors are in good shape and the functionality is all intact.  The rear fan has been replaced with a much quieter one (barely audible), the rear feet are 3d printed replacements, and the timebase has been auto-calibrated to a stabilized Jackson Labs Fury double OCXO GPSDO.  This counter includes the high stability OCXO timebase option and the optional 2.7GHz microwave input channel C.  The Fluke PM6690 is a rebrand of Pendulum Instrument's CNT-90, also rebranded as one in the Tektronix FCA3000 series, they are all the same hardware, chassis, and firmware.  The Fluke PM6690 features:
Two 1mHz to 300MHz rated input channels and a 2.7GHz microwave input channel
12 digits per second base counting resolution with a 100ps single shot timestamp resolution
1M Ohm and 50Ohm switchable inputs with AC or DC coupling (AC coupling 50 Ohm on channel C), automatic trigger settings and input signal level readout for channels A and B
750k reading memory with easy access statistics, histogram, and graph to visualize results
High stability OCXO option 10 included
Some of the pictures include measurements made in testing including measuring the calibration 10MHz source using the counter running on its internal OCXO, measuring a signal generator's 1kHz pulse output (referenced to its own TCXO), measuring an RF generator's warm up to the full rated frequency of channel C, and measuring the period of a 300MHz signal on one of the normal channels.
Only the counter itself and a power cable are included in the listing, not any of the other pictured equipment.
Ships via FedEx ground fully insured in the US or the Global Shipping Program abroad.  Other electronic parts, test equipment, and test equipment parts are available in my store and shipping will be automatically discounted for multiple items bought together.  Feel free to ask any questions.