long delay with NI-Scope Trigger routing

[Thomas Bruns]

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Hello,
We are running a NI PXI-System with a PXI-5922  and a PXI 5124 module. The modules are synchronized by the PXI-clock and sampling with 10 MS/s and 200 MS/s, respectively. With respect to the trigger they are set up in a master-slave-configuration. The 5922 is detecting an analog trigger (rising edge) on its channel 0 and exports a digital trigger to RTSI5. The 5124 detects the digital trigger on RTSI5. All this is set up with LabVIEW 8.2.
Everything runs as expected with one exception:
While testing with the identical sinusoidal signal on both modules, we observe a (quite stable/constant) delay between the two measurements of 3.237(5) micro seconds. This appears to be very (too) high. Is this delay unavoidable/systematic ?

[Evan]

For your application I would suggest using TClk, which will reduce the delay significantly for you.  You can find a bunch of example at Start>>Programs>>National Instruments>>NI-SCOPE>>Examples>>Labview x.x.  I would start with the niScope EX Multi-Device Configured Acquisition (TClk).vi example.