Data logging with gpib device

I have a lock-in amp controlled by labview via gpib. My goal is to use the
"advanced data logger" supplied with labview to log data from a daq card
and the output from the lock-in amp. I have the lock-in vi working correctly
and have the output on the screen. I don't know how to get the pre-packaged
"advanced data logger" to read in data from the gpib device. I can only
read in data from my daq card.
Any assistance in this matter would be appreciated.

1. An OR function should work just fine for you. I don't understand what you mean that the functionality changed. If the reset button is true OR the Trip button is true, then a True gets put in the notifier and the Trip file functions are executed.
I don't understand your "Scale". Right now you have a zero if the button is true and 100 if it is false. You don't have anything else going on with it. I don't understand the stay at zero part. How would it ever get to the point where it isn't zero.
2. For the main log file, you could detect when 43200 iterations of the loop have passed and at that time, just reset the writing to the beginning of the file.
See attached.
Attachments:
Save_Previous_10_SecondsMOD3.vi ‏27 KB

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Attachments:
TDMS Logging with Pause LoggingFSPR.vi ‏55 KB

Problems with GPIB devices

When running my program to control a measurement, everything works fine.
The program can communicate with all the GPIB devices. When I start
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[email protected] (Gerd W.) wrote in message news:<[email protected]com>...
> When running my program to control a measurement, everything works fine.
> The program can communicate with all the GPIB devices. When I start
> the program again (without rebooting Win2K), from time to time it
> refuses to communicate with the GPIB units. Now I found out it helps
> to start MAX2.2 (Measurement & Automation Explorer) and to scan the GPIB
> bus. MAX identifies all devices without problems and my LabVIEW program
> also runs fine now...
> So why do I have to call MAX to have my LabVIEW program have a communication
> via GPIB?
Do you use VISA or regular GPIB functions? If use VISA, you may have
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Hello everyone.
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Attachments:
pulsewidth using counter.jpg ‏659 KB

Hello Karthik,
I can think of two ways I would approach this. One would use software timing, and the other would use hardware timing.
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TG,
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Attachments:
1.jpg ‏98 KB
2.jpg ‏71 KB
4.jpg ‏337 KB

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www.ni.com/ask

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Hi,need help badly=(.
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Attachments:
24xx Swp-I Meas-V gpib.llb ‏687 KB

Good morning,
Without the instrument it might be hard for others to help
troubleshoot the problem. Was there a
specific LabVIEW programming question you had, are you having problems with the
instrument communication, are there errors?
I’d like to help, but could you provide some more specific information
on what problems you are encountering, and maybe accompany that with a simple
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In general we don’t we will be unable to open specific code and debug,
but I’d be happy to help with specific questions.
I did notice, though, that in your logging VI you have at
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a wire was removed and the data is not being updated correctly (see pic below). Is your file being opened properly? Is the data being passed to the file
properly? What are some of the things
you have examined so far?
Sorry I could not provide the ‘fix’, but I’m confident that
we can help. Thanks for posting, and
have a great day-
Message Edited by Travis M. on 07-11-2006 08:51 AM
Travis M
LabVIEW R&D
National Instruments
Attachments:
untitled.JPG ‏88 KB

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Data logging with gpib device

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