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PXI-6602 X4 Encoder Reading - Error 200141

Hello folks,

I'm trying to synchronize the aquisition of analog input data (PXI-6052E) and position data from an x4 encoder (PXI-6602). I have to sample the analog data at >= 20kS/s, and to ensure that the ai and encoder data "line up", I am using the ai sample clock from the 6052E as the sample clock source for the 6602.

The problem is that the 6602 throws error 200141 for any sample clock rate above about 5.5kS/s. I tried to attach a stripped stripped down version of the program to this post, but when I click the "Add Attachments" link, nothing happens (and I even tried CTRL-clicking it).

Thanks for any insight, help, suggestions, etc.
Chris

My system setup is:
LabVIEW 7.1
PXI-1010 chassis
PXI slot 1: PXI-8175 controller (Windows 2k, 512MB RAM)
PXI slot 2: PXI-4472
PXI slot 3: blank
PXI slot 4: GPIB
PXI slot 5: blank
PXI slot 6: PXI-8462
PXI slot 7: PXI-6602 + TB2715
PXI slot 8: PXI-6052E + TB2705
SCXI slot 1: SCXI-1121 + SCXI-1321
SCXI slot 2: SCXI-1120 + SCIX-1320
SCXI slot 3: blank
SCXI slot 4: blank
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