02-15-2007 10:16 AM
02-19-2007 12:54 AM
Hello,
I am not sure if you have already looked at the links below but they are a really good resource for Lock In Amplifiers. Specially the NI Lock In Amplifier Start Up Kit. The download has a word document (NI Lockin Amplifier Start Up Kit User Manual) that lists, in detail, all the VIs and subVIs that are used in the kit. It also explains all the demos that are downloaded with the kit. For example, the LockInDemodulator.vi from which you are getting the X,Y,R and Theta has the following description for the "data" output. This document also explains the demonstrations that are downloaded with the kit.
"A 2-D array containing X and Y components of the input signal at the frequency of the reference signal for all filter roll-off values (one per column). Note that all filter stages necessary to obtain different roll-offs are calculated in parallel so that one can pick the output of any stage without paying a “re-settling time” penalty. For more about the topic, please see the Filter."
You can find more information such as this in the word document.
Best Regards,
Raajit L | Applications Engineer | National Instruments
03-02-2007 10:43 PM
Hi ,
i have a NI DAQ and with that i am getting the signals of a oscilloscope to my computer via a labview program. i was wondering if i can use a labview program which will work as lock in amplifier program?? can it substitute the lock in amplifier completely? IF so is the above lock in amplifier code my labview NI free to use ??
thanks
03-05-2007 07:20 PM - edited 03-05-2007 07:20 PM
Message Edited by Raajit L on 03-05-2007 07:21 PM
03-11-2007 08:08 PM
03-12-2007 04:10 AM
03-12-2007 11:42 AM
03-14-2007 12:16 AM
08-24-2007 11:26 AM
06-06-2008 09:00 AM