I am using the 34972A with 34901A and I want to use the Bank 1 as a multiplexer for my power supply (opening and closing relays to connect to different points), and then Bank 2 for measuring Voltage across various parts of my UUT.
The issue I am having is that the bank switch is closing and my bank 2 measurements are off due to the bank switch being closed or I get an error 301: "The channel is part of a scan".
I am aware that in the manual it says "If any channels are configured to be part of the scan list, you cannot close multiple channels; closing one channel will open the previously closed channel. " but i didnt think I had anything configured as part of a scan list.
*RST
;Open bank switch (also tried close, with the same results)
ROUT:OPEN(@199)
;connect to PSU1
ROUT:CLOS(@101)
;close relays to connect to another device, using module in slot 2
ROUT:CLOS(@212)
ROUT:CLOS(@214)
;measure voltage across channel 113
MEAS:VOLT:DC? 1, DEF, (@113)
Hi,
When using the voltmetre (2 wires), the switch 199 is closed. If you open the switch 199 to use the multiplexer mode, when you are going to request a voltmeter reading (2 wires), the switch 199 will close automatically. I believe it is not possible to use both functions at the same time. You should use a 34903A module for your switches and the 34901A for voltmeter reading.
I tested your setup on my 34970A and 34901A, and I have the same result as you.
Regards
Yves