THE MESSAGE THAT FOLLOWS IS JUST A TRANSCRIPTION OF AN E-MAIL IÂ´VE JUST SENT TO PICOTECH TECHNICAL SUPPORT A FEW MINUTES AGO. I DECIDED TO PUT IT IT HERE SO THAT A BIGGER NUMBER OF PEOPLE CAN TAKE A LOOK AT IT AND, WHO KNOWS, GIVE ME A HAND TOO! THANKS IN ADVANCE FOR YOUR HELP !
here I am again, Sebastien, asking for your help !
IÂ´d thought youÂ´d like to know that I successfully put the example
(adc200.vi) to work - what was happening is that I inadvertently forgot
that I was using a 10x probe to acquire my DC signal. A pretty simple
thing, isnÂ´t it?.
Ok. With all doubts concerning the previous misunderstanding cleared, I
decided to deeply study the manual so that I could be able to develop my
own LabVIEW program, since the provided example doesnÂ´t run on continuous
mode and this is a necessity of my program - on the program IÂ´m currently
developing the user should be able to, among other things, configure the
unit and eliminate the DC offset anytime he so desired.
On the studies mentioned before I found out - I think - why the example
canÂ´t run continuosly : itÂ´s because it would try to open the ADC 212 a
second time and, since it wasnÂ´t closed before, a fatal error would occur
-the function used to open it returns a value of 0 if the unit could not
be opened, what makes me think I could use it to implement a decision
structure, but I havenÂ´t tried it yet. I discovered that the function
adc200_stop can be used to stop the operation of the unit, so that if I
decided to make another data acquisition I wouldnÂ´t need to open the unit
again, and that the function adc200_close_unit can be used to stop and
then close the unit, so that another application which would make use of
the unit could run without trouble - I think I wouldnÂ´t need to close it,
if this application only acquired aquisition data.
On the past three days or so I committed myself entirely to the
development of the program but yesterday something quite strange started
to happen : the ADC 212/100 doesnÂ´t seem to be working properly ! Whatever
the value of the DC power supply, the data acquired by PicoScope, the
adc200.vi and my program doesnÂ´t change at all and, worst of all, doesnÂ´t
really make any sense! Right know IÂ´m trying to discover the causes of
this problem bu I think IÂ´m running out of options ...
As always, any help you could provide will be deeply appreciated !
Yesterday I became a member of the Pico Technology Support and Discussion
Forum and so IÂ´m going to take a look at it to see if someone already
faced a similar problem.
IÂ´ll be anxiously awaiting your reply!
Giovani Marcelino Nesi
Gavea Sensors Measurement Solutions