keithley 2750 channel list

[Grugh_Mike]

I am using Keithley 2750 DMM for the measurements.The device is interfaced with the computer through GPIB connection.Two 7700 multiplexers are connected to the keithley.

My aim to get the 4 wire resistance measurement in a continous or intermittent manner depending on a proximity sensor reading using Labview 8.5 programming.From the Keithley 2750 Project Style Labview Driver, i got the "continous multi read.vi".But here the channel list is from 101 to 110, ie only 10.

Since am using two 7700 multiplexers, i can get a maximum value of 20 resistance values in single trigger.

So what should be done to read the readings of 20 resistances?

Should the channel list be changed? if so to what?

Is there a separate address for each 7700 multiplexer present in the two slots?

I am attaching the present vi common to all 2700, 2750 etc which can measure upto only 10 readings in a single throw.

Do reply. 

Thanks in Advance

Regards

grugh

[Christopher_T.]

Hi grugh,

Take a look at the Keithly User Manual and the Context Help in LabVIEW for the Channel List and it explains what you should be setting that value to in order to get 20 measurements.

http://www.keithley.com/products/data/datalogger/?path=2700/Documents#6

Look specifically at page 74 or 2-12.

The context help gives an explanation when you hover over the channel list field.

Hope this helps!

[Grugh_Mike]

In labview, 

can we directly give channel list as 101:210, ?

Should  the 1st slot channels be closed before scanning the second slot channels?

Thanks in advance.

[Christopher_T. · Accepted solution]

Hi grugh,

Looking at the context help I believe you'd want to do 101:110,201:210

Hope this helps!

[Grugh_Mike]

Thank you very much Christopher T.