Shaun Merrigan
Classic Electronic Restoration, Vacuum Tube Audio, Technical History, Photography
Tag: Restoration of Electronic Equipment
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The HP 3440A is a plug‑in style digital voltmeter designed for HP modular systems and bench racks. It was offered as a versatile measurement unit with a focus on accurate DC voltage and resistance readings, remote triggering, and digital outputs for system automation. With the appropriate plug-in, it can also measure AC voltage, and DC…
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The HP 8443A is a compact, rackable tracking generator and frequency counter designed to work with HP spectrum analyzers; it produces a swept CW output that follows the analyzer marker for easy swept-response and marker‑based measurements, while offering a built‑in counter and stable 1 MHz timebase for accurate frequency readout. Overview The HP 8443A Tracking…
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Overview The DM 5010 was designed as a modular, rack‑mountable multimeter module for Tektronix’s TM5000 series mainframes. It combines a 4½‑digit display resolution with a microprocessor‑based front end and keypad control, letting users run measurements locally or automate them over IEEE‑488/GPIB for test systems and production environments. Key Specifications I have two Tektronix DM 5010…
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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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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…