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How Can I Synchronize Two DAQCard-700/1200s?

Hardware: Legacy DAQ Devices>>Multifunction DAQ>>DAQCard-700, Legacy DAQ Devices>>Multifunction DAQ>>DAQPad-1200

Problem: I want to synchronize two DAQCard-700/1200s so they perform analog input using the same sampling clock. I am familiar with synchronizing devices using the RTSI interface, but DAQCards do not have access to the RTSI interface.

Solution: To synchronize the analog input, you need to synchronize the channel clocks on both devices by doing the following:

1. Set the channel clocks for both devices for external input, which uses EXTCONV (pin 40).


2. Configure one of the counters to generate a pulse train starting on a level trigger supplied to the gate of the counter.


3. Route the counter output to the EXTCONV pin on both devices.

The devices are now synchronized for acquiring analog input.

Related Links: Product Manual: DAQcard-700 User Manual
Product Manual: DAQcard-1200 User Manual
KnowledgeBase 2OMDRIXA: How do I Synchronize the Analog Input with the Analog Output on My DAQCard-1200?

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Report Date: 06/25/1998
Last Updated: 10/22/2004
Document ID: 1AOHAF0O

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