Measuring Bioluminescence Signals

[Sven Zörner]

Hello Labview specialists.
I want to measure bioluminescence flashes itensity against time.
my setup is a DAQCard 6062E, Labview6.1 and a Burle Photomultiplier with
an external amplifier.

The signals i want to measure range between 0 to 5V for the itensity
and the signal lenght itself is between 1sec up two 90 sec for a whole
sequence.
a single flash is about 120 msec long and i want to measure with about
1000 scans per second for one to ten minutes.

I want to create a vi which starts after a start button and writes the
scannings into a file while presenting data on a chart.
I want to stop the dataaquisition either by hand or after a previously
determined period of time after start.

I am new to labview and a biologist (not a professi
onal technician).
How to start ?

Any advice would be helpful.

Best regards

Sven Zoerner
Department of Zoology
University of Mainz

[waldemar.hersacher]

Hi Sven

look into the examples of LabVIEW. "Search Examples>>I/O Interface Examples>>Daq Examples>>Continous Acquisition & Chart (buffered)" will do the most you want.
Modifiy the block diagram to open a file with "File I/O>>Open/create/replace File.vi" before entring the while loop. Connect the refnum to the while loop (left side) and use in the while loop "write file" to write the data to the file. Connect dup refnum to the while loop (right side) and use "close file" to close the file.
You can also look at the File I/O examples how to write and read files with LabVIEW.
Waldemar

[Sven Zörner]

Great! Usenet is perfect :-).
Searching for a solution and learning Labview on your can be a rather time

consuming project.
You helped me a lot! Thank you very much, Waldemar.

Actually I now have the next followup problem (s), which i will try to
solf on my own first.
But i think i will be back to this group very soon.

Sven