Instrument Control (GPIB, Serial, VISA, IVI)

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DMM6500 sample rate

I have a program that samples 4 wire resistance measurements from a Keithley DMM6500.  In between measurements, the operator needs to change connections.  I would like for the operator to be able to see the measured value so as to know if the connection is bad.  Unfortunately when the instrument is in remote mode, the display freezes on the last value sampled.  I have added the command

 

:TRIG:CONT REST

 

 

This command wasn't in my 2018 reference manual, but fortunately I downloaded the 2019 version and found it.  This does put the instrument back into continuous sampling mode, but it is at ~1/2 Hz rate.  Looking through the SCPI reference I don't see a command to set the sample rate.

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From the manual,

*RST
:SENS:FUNC "FRES"
:SENS:FRES:RANG: AUTO ON
:SENS:FRES:OCOM ON
:SENS:FRES:AZER ON
:SENS:FRES:NPLC 1
:READ?

 

Note:

  1. FRES -> Four Wire Resistance {Use only RES for standard two-wire measurements}
  2. OCOM -> Offset Compensation {Set for Best Accuracy: For quickest Results, Turn OFF}
  3. AZER -> Auto Zero {Set for Best Accuracy: For quickest results, Turn OFF}
  4. NPLC -> Number of Power Line Cycles {for Best Accuracy, set to MAX: For quickest results, Set to MIN}
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