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E-series board clock synchronization (master/slave)

Platform: Win2k, LabView 6.02i, NI-DAQ 6.9.2

I have two PCI 6071E DAQ boards and would like to define one of them as a master that uses its internal samping clock and the second - as a slave, getting its sampling clock from the first one. I used the example "Two E Series Shared Scan Clock " example to do it, but got strange results.

The question is, how can I check that the slave really uses master's scan clock (say, using a two-beam oscilloscope) ? Are there outputs on 6071E that can prove that the boards are synchronized ?

Thank you,
Sergey.
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Hello;

Since the slave board on that Labview example VI is configured to expect an external Scan clock pulse train, and later on the same example the Scan clock is defined to be one of the RTSI lines, if the slave board is acquiring any data, that means that the synchronization is in place.

To double check the synchronization visually, you can hook up a 2 channel scope, and maybe hook up two waveforms you know are in phase, one to channel 0 of the master boar and the other to channel 0 of the slave board. Then, configure the scope to trigger of channel 0, and connect channel 0 of the scope to the master board and channel 1 of the scope to the slave board.

With that setup, you will see both waveforms in phase on the scope.

Hope thie helps.
Filipe A.

Applications Engineer
National Instruments
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The question is, where can I connect the scope to these boards, in order to see what is sampled ? Can I configure their analog outputs to produce exactly what their inputs receive ?

Thank you,
Sergey.
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