Shaun Merrigan

Classic Electronic Restoration, Vacuum Tube Audio, Technical History, Photography

Tag: Tektronix CG 551

Tektronix CG 551 CG5001

14/01/2026

Restoration of Classic Electronic Test Equipment, Tektronix

This is a follow-up to my previous post about repairing a Tektronix CG551AP/CG5001 Calibration Generator. The CG551 had been sitting for many months and I thought it was time to give it a quick check. Shortly after turning on the TM5000 mainframe that I had plugged the CG551 into, I was assaulted by the tell-tale…
Tektronix CG551/5001 Calibration Generator Repair

16/11/2025

Restoration of Classic Electronic Test Equipment, Tektronix

Originally posted in December, 2023 Background The Tektronix CG511/5001 Calibration Generator is a source of calibrated timing signals, voltage and current waveforms, and pulses with low distortion/fast edges. The device can be used to calibrate and check oscilloscope performance characteristics. It has six basic modes and can be remotely programmed via the GPIB interface. It…

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