UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post - Meter Suggestions for Basic Alignment/Calibration

David Simpson · 20th Jun 2018, 3:24 pm

Like myself, Sinewave, & many others, you're a keen AVO collector, Ian. You will need a reliable voltage source for testing fsd. Not just AVO's 37.5uA, but any MC meter.
I would recommend a Time Electronics Ltd 2003N Voltage Potentiometer. Plenty of info on the net. Gives out from 0.01uV to 9.9999V pure DC. Try BVWS Swapmeets, put out a Forum request, or try eBay(make sure you get a cast-iron assurance & return arrangement). Mains AC is only used for charging the internal battery.
Any of the other guys recommendations for a good DMM for reading uA is spot-on. Me - I use a NEWLEC(AVO) NLDMM1 which has a switched 200uA DC range. Or a Sch/Solartron 7040 Automatic Ranging DMM which goes down to 10uA Range.

Regards, David

20th Jun 2018, 3:24 pm	#75
David Simpson Nonode Join Date: Mar 2008 Location: Aberdeen, UK. Posts: 2,853	Re: Meter Suggestions for Basic Alignment/Calibration Like myself, Sinewave, & many others, you're a keen AVO collector, Ian. You will need a reliable voltage source for testing fsd. Not just AVO's 37.5uA, but any MC meter. I would recommend a Time Electronics Ltd 2003N Voltage Potentiometer. Plenty of info on the net. Gives out from 0.01uV to 9.9999V pure DC. Try BVWS Swapmeets, put out a Forum request, or try eBay(make sure you get a cast-iron assurance & return arrangement). Mains AC is only used for charging the internal battery. Any of the other guys recommendations for a good DMM for reading uA is spot-on. Me - I use a NEWLEC(AVO) NLDMM1 which has a switched 200uA DC range. Or a Sch/Solartron 7040 Automatic Ranging DMM which goes down to 10uA Range. Regards, David Last edited by David Simpson; 20th Jun 2018 at 3:26 pm. Reason: Add'l info