I obtained a Racal 6062 VXI card that does exactly what I need for a project.
This card has 4 channels of DAC and 4 channels of ADC.
I plug it into a VXI mainframe as the _only_ card (no controller yet)
and I get both "failed" and "access" LEDs.
Another card (HP DMM) seems to behave better -- "failed"
flashes for a few seconds upon power-up, then goes out.
I have done the obvious checks of fuses, system voltages, etc.
Is the hard simply dead, or will populating the
mainframe with a controller make any difference?
Thanks much for any advice ...