New article - HP 3245A Universal source
Worklog and teardown of rare precision DC/AC source from HP.
New article about Hewlett-Packard HP3245A obsolete universal generator. Teardown, repairs and tweak guide.
Instrument firmwares, calibration test results verification and video covering operation are shown.
Contents include next items:
- Initial inspection and basic disassembly
- Manuals references
- Repair workflow
- Boards condition check
- Performance verification
- Main reference upgrade
- Additional output amplifier for 0.1x/0.01x gain
- Restoration summary