Agilent/Keysight 53230A 12 digits/s Frequency Counter 350MHz, 20ps timestamp

Description

One used Keysight 53230A 12 digit per second frequency counter in good cosmetic and excellent functional condition.  This unit shows some discoloration on the bumpers and encoder knob, has some dings on the plastics that are hidden by the bumpers in use, and the metal on the LAN connection at the rear is slightly bent, but is in overall good cosmetic condition and is fully functional.  It has the GPIB interface hardware option, has been updated to the most recent firmware, and has a fresh RTC battery.  It's been tested, performance checked against another 53230A, and the internal oscillator has been calibrated to a Jackson Labs Fury DOCXO.  The Keysight 53230A features:
Two 1mHz to 350MHz rated input channels with switchable 5V/50V range
12 digits per second base counting resolution with a 20ps single shot timestamp resolution
1M Ohm and 50Ohm switchable inputs with AC or DC coupling with level readout
1M point reading memory with front panel visible statistics, histogram, and graphing to visualize results
GPIB, USB, and LAN interface connections
The last two images are of some of the tests run on the unit, the first being a 2Hz FM modulation on a 100MHz carrier, and the second being a 10MHz to 300MHz stepped frequency sweep to demonstrate the visualization features.
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.