I have been looking for a Hewlett Packard signature analyzer for many years, but until I found this one they have either been in good shape and really expensive or in poor shape and really expensive.
HP 5005B Signature Multimeter cleanup
HP 3314A Function Generator Repair
I found a great deal on a Hewlett Packard 3314A 20 MHz function generator that was non-functional, but overall looked to be in good shape. It arrived in great condition and was well packed for a nice change. The seller clearly stated the issues with this unit such as errors when started up cold, which worsened over time until it finally lost the display and LED’s.
Fixing Up a Hewlett Packard 1662C Logic Analyzer
Cleanup and mechanical repairs on a 1996 vintage HP 1662C Logic Analyzer to add to my test equipment collection.
Hewlett Packard 34721B BCD Module
Adding a new HP 34700 series module to the collection. This time it is the 34721B BCD interface plug-between module, which converts character serial data from the 34740A or 34750A Display Module to parallel character information for output to a printer.
Hewlett Packard 3551A Transmission Test Set
Checking out a HP 3551A sold as “For parts or not working, will not power on”, that I actually purchased for parts.
My original intent on purchasing this unit was to salvage the knobs and connectors for repairing some of my other HP gear. I did manage to swap out four of the knobs before my curiosity got the better of me.
Hewlett Packard 8012B Pulse Generator
Cleanup and repair of a Hewlett Packard (HP) 8012B pulse generator purchased on Ebay as “Untested does not power on, sold as is”.
The 8012B was originally produced by the HP Gmbh Boeblingen Divison, Germany, but this later model was made in USA. It provides variable transition times down to 5 ns and the repetition rate can be adjusted from 1 Hz to 50 MHz.
Hewlett Packard 10548A Diagnostic Service Kit
After spending many hours working on my Hewlett Packard 5300 series measuring systems, I decided to remake my own version of the HP 10548A diagnostic service kit.
Hewlett Packard 5301A Counter Plug-on Module
Cleaning up and photographing a Hewlett Packard 5301A 10 MHz counter plug-on module for the 5300 series modular measuring system.
HP 5300B Counter Plug-On modules
Cleaning up and looking at a bunch of plug-on modules for my Hewlett Packard 5300B mainframe modules, after purchasing a new unit. It seems that I am starting to collect quite the range of modules for my HP 5300 systems since my original 5300B Measuring System back in 2017.
Remake of the Hewlett Packard 11456A Read Out Test Card
The HP 11456A Read Out Test Card is a nifty little test board that plugs into the HP 3470 series display modules. I really wish that I had had one of these, before I started working on my faulty HP 34740A display module.
HP 34740A display and 34702A Multimeter Modules
As mentioned in a previous post on the Hewlett Packard 34702A Multimeter module, I have been looking for a 34740A display module to pair with it. I was lucky to find a module that was in a good cosmetic condition and untested for a reasonable price.
Hewlett Packard 34702A Multimeter Module
When I purchased my HP 34750A Display module, it came with a somewhat beat-up 34702A Multimeter module. I was mainly interested in the display module to pair up with my existing HP 34703A module, but this is also an interesting module worthy of further exploration.
Continue reading “Hewlett Packard 34702A Multimeter Module”Hewlett Packard / Agilent 6632B Upgrade
Upgrading a Hewlett Packard / Agilent 6632B System DC Power Supply with front panel binding posts and correcting an original design error.
Continue reading “Hewlett Packard / Agilent 6632B Upgrade”Hewlett Packard 3456A Digital Voltmeter
Cleanup, restoration, and calibration of a Hewlett Packard (HP) 6 1/2 digit 3456A Digital Voltmeter.
Continue reading “Hewlett Packard 3456A Digital Voltmeter”Hewlett Packard HP 403B AC Voltmeter Restoration
Another local Ebay find was this Hewlett Packard HP 403B AC Voltmeter in a protective HP vertical case. The case did an excellent job of protecting the meter over it’s now 48 year life.
Continue reading “Hewlett Packard HP 403B AC Voltmeter Restoration”Hewlett Packard 6200B Power Supply Repair
Cleanup, repair, and upgrade of a Hewlett Packard (HP)6200B power supply.
Continue reading “Hewlett Packard 6200B Power Supply Repair”