route ai scan start

[graduate student 44]

i'm trying to route "AI Scan Start" signal to one of the RTSI lines. i need to timestamp each data sample. but somehow labview doesn't like it. does anyone know how to output "AI Scan Start" signal?

[Christian_L]

For more information on your questions consult the Synchronizing Multiple Devices section in chapter 2 of the 447x User Manual. Based on the information you should place your 4472 in slot 2 of the chassis, configure it for synchronizing multiple cards and then monitor either the PXI Star Trigger line or RTSI 5 on your FPGA card for the ADC oversample clock.

"NI PXI-4472


To synchronize two or more NI PXI-4472 devices in a PXI/CompactPCI system, one of the NI PXI-4472 devices must be located in PXI Slot 2. This device is the master, and the PXI devices in other slots are slaves. The master broadcasts the ADC oversample clock to the other PXI devices on the PXI Star trigger lines and uses the RTSI 5/TRIG 5 line to drive the synchronization signal to t
he slave devices."


Christian L