I am trying to calibrate me Solartron 7150 (non plus ) using a clone of the HP82357b GPIB to USB interface and Keysight interactive IO.
I have followed the instructions as the manual, plug in GPIB, power unit , insert shorting plug send command C1. This SHOULD set the unit into CAL mode (the cal annunciation should stop flashing and the display should show cal. But it doesn't! The only thing that does happen is it displays ERR 01, which is command was not recognised.
Has anyone come across this before? Maybe it's an incompatibility between the later interface and the legacy ieee on the Solartron?