Greetings,
If you have access to the 2004 edition of the Measurement and Automation Catalog, on page 795, you will find an explanation of Simultaneous Sample and Hold. If you do not have access to this catalog, I have scanned this page and attached it below.
With regards to the differences between parallel and multiplexed mode, the main differences are the following:
1. In multiplexed mode, the sample rate is limited to the lower of the maximum sample rate of the controlling DAQ device or 333 kS/s. In parallel mode, the sample rate is only limited by the maximum sample rate of the controlling DAQ device. In other words, you can sample faster than 333 kS/s.
2. Each SCXI module that is configured for parallel mode must be cabled directly to a separ
ate DAQ device. Every SCXI module that is configured for multiplexed mode is digitized by the same DAQ device. In other words, in multiplexed mode, only one DAQ device is required.
Good luck with your application.
Spencer S.
