Reference Example for Eliminating Round Trip Delay for HSDIO
This example shows how to synchronize multiple HSDIO cards using NI TClk and account for round trip delay (RTD). RTD compensation is often used where the HSDIO card is generating data and a clock to another device. The device responds with data only (no clock). Since both the generated and acquired data use the same clock, stating both at the same time will not account for time it takes the signal to propagate through the cable. By compensating for RTD, delaying the acquisition relative to the generation by the proper amount, one can insure the correct data will be acquired.
NI TClk synchronization
For more information on NI TClk synchronization, please see National Instruments T-Clock Technology for Timing and Synchronization of Modular Instruments.
This reference application was created by the NI Systems Engineering group.
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Application Software: LabVIEW Base Development System 8.5
Hardware Group: High-Speed Digital I/O
Hardware Model: PCI-6551, PCI-6552, PXI-6551, PXI-6552
Driver: NI-HSDIO 1.5.1
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