DEC AXV11-C analog board

[Jon Elson]

On 2/8/22 13:34, Douglas Taylor via cctalk wrote:
> Update on this:  I did put together a battery and voltage 
> divider to test the AXV11.  The label on the A/D module 
> says it brings the output from the multiplexer to one of 
> the external pins.  I was able to verify that the voltage 
> applied to a couple of the A/D inputs makes it through the 
> multiplexer when selected using the CSR.  The next output 
> available is from the Sample and Hold, and this is always 
> pegged at +12v.  Am I wrong to assume that the sample and 
> hold will 'freeze' its output when the A/D go bit is set?

Well, it will probably only hold the approximate voltage for 
a few seconds, but should be long enough to see on a voltmeter.

Jon