Thank you yash,
but what I want is not to increase the number of readdings. Sorry maybe I did not make this clear.
as the manual says:
there are 2pt delta mode and 3pt delta mode. the "2pt" mean the number of A/D conversion in each reading.
I just found there are lots of items under the property note in block diagram of the 6221-2182 delta mode vi.
May be I can set the point from here, I am still checking it, maybe the item "sample conts" is what I want.
Thank you , I will need to use the 3pt right now. maybe for some condition later is the 2pt.
I just found that there is an item called "measurement phases" in KE622X Configure Pulsed Delta.vi, with it we can choose
between 2pt and 3pt. but there is no such item in the corresponding KE622X Configure Delta Mode.vi.
so I was wondering there is only 3pt option in this KE622X Configure Delta Mode.vi by default, and I intended to complie the
ke622x_32.DLL which is a job I have little confidence.
But now with your answers , It seems clear that I am safe to use the 6221-2182 Delta Mode.vi to do the 3pt measurement.
and use the modified DC.vi to do the 2pt delta mode measurement.
is it the case ?
when I use delta mode for resistance measurement, the "talking" and "listening" time between 6221 and 2182A is around 4 sec. Since I am going to do continuous measurement in a sweeping magnetic field, the 4 second of communication time is always presence in each measurement point which is even longer than the measuring time. How can I reduce such communication time? I am trying to modify the labview software so that only one communication will be activated at beginning of the continuous measurement, but it seems impossible.
Many thanks in advance for any info.
Avoid the delta mode . Use 6221 for passing the constant current at the begining of sweeping magnetic field and communicate with 2182A directly for measuring the voltage. The labview library files for 6221 and 2182A should have the vi's for independent communication.
I cannot seem to find the drivers in the link you gave me. I did download LabVIEW project style 2009 drivers for the 622X from keithley but the VIs you use in the attached files do not use these drivers. Could you send me to the correct drivers for your attached VIs?