HELP! (how to acquire two channels via gpib?) 
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 HELP! (how to acquire two channels via gpib?)


I have the following problem:
I have a LeCroy 4 channel OS connected via GPIB to my PC.
I need to acquire 100ms of data from two channels simultaneously, triggering
the event with a third channel.
I have installed the labview-IVI drivers for my OS, but looking at the
application's example I find only a one-channel acquisition example, and I
don't know how to change them in order to do a two-channel acquisition.
(I' m able only to make sequential acquisitions....).
How can I syncronize the read waveform blocks?
Please help me,
Many thanks


Sat, 24 Apr 2004 20:02:17 GMT  
 HELP! (how to acquire two channels via gpib?)
Since you have an IVI driver for the scope, you can use the IVI
Oscilloscope class driver. Do all of the initialization and
configuration for acquisition, channel, and trigger (under the
configuration palette). Under the measurement palette, you can do an
IVI Scope Read Waveform for one channel, and then do a an IVI Scope
Fetch Waveform. The read initiates an acquisition and the fetch
returns a waveform for any other enabled channel without doing another
acquisition. Both the read and fetch return an initial x relative to
the trigger and x increment in seconds so its easy to get the data you
need from the waveform arrays. Good luck.

Sat, 24 Apr 2004 23:06:00 GMT  
 [ 2 post ] 

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