Using SCXI 1127 in 4 wire mode

[markus kossmann]

How to use the SCXI-1127 in 4 wire mode with NI Switch ?
You can set the 4 wire mode in Measurement and Automation Explorer, but the softfrontpanel shows still 64 channels and only one common and one Analog bus.
The same problem shows up, if I want to configure the IVI-switch driver.

[cld]

The SFP for the 1127, should have multiple Analog Bus ouputs including AB0 and AB1. These are the two channels passed out of the High Voltage connector and can be used in conjuction with the HV8 to BAN4 cable to pass the signals to the DMM. See page 2-7 of the manual for a better visual of the setup:

http://www.ni.com/pdf/manuals/322149b.pdf

Best Regards,
Chris

[markus kossmann]

Well, I've tried that. But the SFP shows only AnalogBus0, Channel1-Channel64 and Common0. Analogbus0 is only accessable when routed over the Common0 channel.
This seems to match the 1-wire configuration. But how to switch to 2-wire or 4-wire configuration ?
The Options for the SXCI-1127 device in the physical device list in Measurement and Automation Explorer show me "Vierdraht" ( german for 4-wire), "Zweidraht", and "Eindraht" . Of course I've chosen "Vierdraht", but changing that doesn't show any difference. Might it be that the translation to german did introduce a bug here?

Another point , which seems strange to me, that there is no "...4-wire.top" configuration file in VXIPNP/WinNT/NISwitch/topology for the 1127.
Do have to write my own
.top file ?

Also,we will not use the HV outputs but we want to loop back our signals to the front connector ( SCXI_1331: OutA+, OutA-, OutB+,OutB-, as described on Page D-4 of the manual). So there is no need to use the Analogbus at all.