Error when trying to edge-trigger to a input voltage smaller 300mVpp

[WebSeb]

The programm shown in a cut below (just a cut of it) reads multiple channels from the PXI5105. The program allows to choose between different triggers. When I choose edge-triggering and the value of the input voltage I am triggering to is smaller than 300 mVpp the program stops and sets an error. With the 'Highlight function' I found out that the error is set at the '1D WDT'-vi.

The error message:

ERROR
"Possible reason(s):
Driver Status: (Hex 0xBFFA4009)
A previous acquisition is still in progress. If you are attempting to change an attribute, note you can only change fetch attributes while an acquisition is still in progress.

Status Code: -1074118647

I guess, if the voltage gain isn`t high enough the '1D WDT'-vi waits the 'timeout' = 5s for the trigger, isn`able to get one, and stops. But what can I do to trigger to smaller voltages as 300 mVpp? There is no option to change it. The trigger level of the 'Analog Edge Ref Trigger' is set to 0.

[gwd]

This will also happen if you set the full scale input range too small (too sensitive).

To troubleshoot stuff like this I would advise using a standard oscilloscope (or prebuilt vi, if necessary free-running) to make sure your signal really is what you think it is.

[Blindleistung]

Im WebSeb...writing with my private account now.

I actually used an example for the trigger setup. Did you mean the vertical input range should be set higher? Its already set to 10V.

Im sorry if I misunderstood you. Thank you for your help.

[gwd]

Well then that's not it.

Not triggering at low voltages- can be caused by either scale too high (so that 1 bit is bigger than the trigger level, not the case here) or scale too low (because of saturation the acquired signal never reaches the trigger level).