High Bandwidth Voltage Input Isolation
Hello,
I'm using the NI 6025E DAQ board and connect it through the SC2050 conditioning board to an analog I/O board, 5B01. I would like to isolate between the board and an analog signal coming out of of a DUT unit, and I need the isolation unit to be able to handle signals of Mghzs bandwidths.
I realize that I cannot find a 5Bxx unit with such high BW, but what do you recommend I should do instead ?
Michael.
Hello Michael,
I see that you are looking for an isolation module to connect to your 6025E device that has a bandwidth in the MHz range. Unfortunately, I think this type of setup will not work for you since the 6025E has a maximum sampling rate of 200kHz. If you need to be able to sample data in the MHz range you will need to have a device that can sample much faster (i.e. High Speed S-Series or NI-Scope products).
Typically you do not see much signal conditioning for these types of devices since they have such a high bandwidth. For example if you look at our SXCI isolated analog input modules they have a bandwidth of just over 20kHz.
I hope this helps. If you have any additional questions can you please give us a little more information about the signal coming from your DUT (i.e. voltage and frequency range and what type of isolation you are looking for)?
Regards,
Jesse O.
Applications Engineering
NIC
Message Edited by Jesse O on 10-17-2006 10:44 AM
Jesse O. | National Instruments R&D
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ElectronCountsTest.vi 29 KBThanks for the reply johnsold. I didn't think to use a comparator but that is good to know that I have that option. I was and still am hoping for some kind of trick to do this programmatically. One other idea that I was playing with is offsetting two or three different Reads on the same signal to read the signal at different times. If this is a possibility, it may be able to double or triple my sample rate to 500k or 750kS / sec. Anyone else have any ideas on this solution?
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