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E3631A - Switch from Limit Mode to Meter Mode

Question asked by matrix2003 on Apr 14, 2010
Latest reply on Apr 26, 2010 by chunhlow

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Hi,

I am currently use the Agilent E3631A Triple Output DC Power Supply and control its setting use RS232 remote interface.

Question - After I set the E3631A e.g. "APPL P25V,12.0,0.1" with constant current output, the power supply will remain in limit mode. How can I return to meter mode to display the actural volatge output reading? which commands I can be used?

Your helps is much appreciated.

Peggy

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chunhlow Apr 22, 2010 3:13 AM
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Since you are using RS232 interface, command SYSTem:LOCal will switch the power supply back to local mode. Try it out and let me know if it doesn't work.
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matrix2003 Apr 22, 2010 8:01 PM
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Hi Chunhlow,

Thanks for your advise. I do aware that "command SYSTem:LOCal" will switch the power supply back to local mode. However, In my application I need to lock the E3631a front panel during the testing cycle and not allow any change by the operators, but need to show them the actual voltage output under the Vcc mode so they can record down the voltage value.

Any advise in this subject is truly appreciated.

Peggy
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chunhlow Apr 22, 2010 11:06 PM
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Sending command MEASure[:VOLTage][:DC]? [{P6V|P25V|N25V}] will refresh the front display of the power supply. Can your application send this command in certain interval (e.g. 2s once) to the power supply so that the front display of the power supply will be refreshed and your operators can record down the voltage value?
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matrix2003 Apr 23, 2010 10:21 AM
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Hi Chunhlow,

It works. Thanks!

One last question. Now if Iwould like to read both voltage and current values from the E3631A comm port? which commands I should be used to trigger E3631A to export these data?

Thanks in advace.

Peggy
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chunhlow Apr 26, 2010 2:39 AM
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MEASure[:VOLTage][:DC]? [{P6V|P25V|N25V}] will do voltage query while MEASure:CURRent[:DC]? [{P6V|P25V|N25V}] will do current query. There is no single command for both voltage and current query at the same time. You'll have to send one command at a time (the sequence doesn't matter). Another thing to note is, you may need to play around with delay when sending query command to the power supply via RS232 port.

Hope this helps.
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E3631A - Switch from Limit Mode to Meter Mode

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