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We appreciate your patience as we improve our online experience.
12-11-2013 11:27 PM
Hi, first time doing Labview programming so I'm completely new to this. My task is to read the frequency from 2 channels (2 sources) simultaneously and compare the difference between them (if any).
So I've used both the examples and Agilent drivers to get something that gives me the frequency of either channel 1 or 2 depending on the user choice. But how do I get readings from both at the same time? Sorry if there's an obvious solution but I can't seem to get it haha.
Thanks in advance for any help!
Solved! Go to Solution.
12-12-2013 12:11 AM
12-12-2013 12:24 AM - edited 12-12-2013 12:34 AM
Hi sorry I'm using Labview 2013 with these drivers: http://sine.ni.com/apps/utf8/niid_web_display.download_page?p_id_guid=974EC4ACB2143B9BE04400144FB7D2...
for the Agilent 532XX Series Counter/Timer.
I've attached my current block diagram below. Sorry I'm not sure what you mean by the fetch command? Are you talking about the SCPI commands? I'm actually just using the drivers as is since i'm even more lost when it comes to SCPI commands.
Thanks for the fast reply!
EDIT: Oops are you referring to the low level Fetch Measurements subVIs? Using that instead of Read Measurements gives me a command error tho.
12-12-2013 01:04 AM
12-12-2013 01:12 AM
Okay thanks a lot for the advice! I'll follow up on it and let you know how it goes.
12-12-2013 03:20 AM
The user manual confirms that you can only do one at a time, you can do a frequency ratio measurement if thats any good.
The counter channels with the exception of frequency ratio and selected time
interval measurements are separate and can be configured independently.
Measurements on the channels do not occur simultaneously, however. Switching
between channels retains the channel configuration, but ends the current
measurement. The newly selected channel is re-initiated and measurements
begin when the programmed trigger conditions are met.