Try PCBWays fast & affordable prototyping services https://pcbway.com/g/Tj5om7
Raspberry Pis back in stock @ https://www.welectron.com/
Raspberry Pi GPIB shield http://elektronomikon.org/
Precision torque meter by https://mark-10.com/
My data about 4950 https://github.com/marcoreps/datron_w...
4950 vs 5700A cal script https://xdevs.com/doc/Wavetek/4950/ca...
Noise spectral density plot tool https://github.com/macaba/NSD

00:00 Intro
00:53 Self test
01:37 ACV pre-preamp
03:59 Current assembly
04:48 Input connector
09:54 Worn out relay
11:17 Cal setup
13:30 Calibration test
14:59 ACV linearity
21:10 Special menu
22:14 DCV linearity
23:07 DCV noise