8 Nov
2024
8 Nov
'24
3:23 p.m.
Here's the manual for the 1640B HP-IB option board:
http://everist.org/archives/scans/HP_1640B_OPT_001/
And as a zip file:
http://everist.org/archives/scans/HP_1640B_OPT_001/HP_1640B_OPT_001.zip (4.4MB)