Category: Restoration of Classic Electronic Test Equipment


  • Tektronix 556 Dual Beam Oscilloscope

    Originally posted in December, 2018 Tektronix 556 Dual Beam Oscilloscope Images What follows is a series of images of my Tektronix 556 Dual Beam Oscilloscope displaying various waveforms.  I am learning about this scope and how to use it. A brief description of the unit can be found here: Tektronix 556          

  • Tektronix TM500 Mainframe Tester

    Originally posted in June, 2022 The Tektronix TM50n is an โ€œnโ€bay (where n = 1 to 6, the number of bays) mainframe which can host and power TM500 plug-ins. It was available in 1 through 6 bay versions and was the predecessor to the TM5000 mainframe: See my post here about the TM5000 mainframes. Tektronix…

  • Tektronix TM500/5000 Plug-in Holder

    Originally posted in June 2022 I have previously written about the substantial number of different plug-ins available for the Tektronix TM500 and TM5000 systems. Since the equipment is now anywhere from 20 โ€“ 50 years old it needs to be refreshed and/or repaired before going back into service. This often means working on the plug-ins while…

  • Tektronix CG551/5001 Calibration Generator Repair

    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…

  • Tektronix TM5006 Power Module Refresh

    Originally posted in June 2021 The Tektronix TM5006 is a 6-Bay power module which can host and power either TM5000 or TM500 plug-ins . Tektronix themselves had about 130 different plug-ins available which comprised power supplies, signal generators, oscilloscopes, multimeters, test oscillators, calibrators, attenuators, filters, logic analyzers, frequency counters, audio analyzers and more. In addition, numerous third…