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rates changed to slow when read voltage through K6221 RS232

2182 Series Support
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hachiko
Posts: 18
Joined: May 15th, 2013, 6:02 am
Country: China

rates changed to slow when read voltage through K6221 RS232

Post by hachiko » July 10th, 2013, 9:21 pm

set 2182A rates to Medium first, then I read a measurement through command "SYST:COMM:SER:SEND MEASURE:VOLT:DC?", the rates is automatically changed to slow, why?
2182A is connected to 6221 through RS232, 6221 is GPIB connected to PC.

And I found, It is very slow to get reading from 2182A through 6221 RS232, it takes about 2-3 seconds

Dale C
Keithley Applications
Keithley Applications
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Re: rates changed to slow when read voltage through K6221 RS

Post by Dale C » July 11th, 2013, 5:30 am

The :MEASURE:VOLT:DC? query command resets the function of DCV to *RST conditions.
I would use the following code instead.

:SENSE:FUNC 'VOLT:DC'
:READ?


That should keep the DCV function in MEDium speed.

hachiko
Posts: 18
Joined: May 15th, 2013, 6:02 am
Country: China

Re: rates changed to slow when read voltage through K6221 RS

Post by hachiko » July 12th, 2013, 7:07 am

Thanks.

F_CHEM_
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Joined: March 31st, 2015, 6:26 am
Country: United Kingdom

Re: rates changed to slow when read voltage through K6221 RS

Post by F_CHEM_ » April 16th, 2015, 10:02 am

Hi, I have a similar Issue.

Is it possible to change the *RST defaults so that the 'MEAS:VOLT:DC?' function does uses fast?

Dale C
Keithley Applications
Keithley Applications
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Joined: June 10th, 2010, 6:22 am
Country: United States
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Re: rates changed to slow when read voltage through K6221 RS

Post by Dale C » April 16th, 2015, 12:26 pm

The *RST condition are set. They are not programmable.
If you send :MEASE:VOLT:DC? then the default NPLC, which is 5, is selected.

F_CHEM_
Posts: 7
Joined: March 31st, 2015, 6:26 am
Country: United Kingdom

Re: rates changed to slow when read voltage through K6221 RS

Post by F_CHEM_ » April 16th, 2015, 1:14 pm

Cheers Dale

Will have to give my programme more thought

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