The NI 5911 high speed digitizer does not support trigger delay; therefore its only valid input parameter for trigger delay is zero. The two high speed digitizers which do support trigger delay are the NI 5112 and the NI 5122.
There is a helpful listing in the NI High-Speed Digitizers Help which displays the features supported by each device (Start >> All Programs >> National Instruments >> NI-Scope >> Documentation >> NI High-Speed Digitizers Help >> Content tab >> Devices >> Features Supported by Device). If you did not install the documentation along with the driver, you can also download this support file
here.
I hop
e this helps!
Regards,
Sonya Wornson
Applications Engineer
National Instruments