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Getting value of I, V ans S for each reading in Diff. Cond.

6220, 6221 Current Sources
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vaibhavinegi
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Country: India

Getting value of I, V ans S for each reading in Diff. Cond.

Post by vaibhavinegi » July 25th, 2015, 4:56 am

Using 6221 and 2182A devices I am performing IV operation using Differential Conductance.
Using FORMat:ELEMents, TRACE:DATA command can returns string set of Time-stamp , Reading, Unit, Average Voltage, Source Value and Reading Number.
How can we get returns string as Source Value, Voltage(not Average Voltage) and SIEMens?
Vaibhavi Negi
Research Scholar
Delhi; India

Andrea C
Keithley Applications
Keithley Applications
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Re: Getting value of I, V ans S for each reading in Diff. Co

Post by Andrea C » July 28th, 2015, 6:04 am

Check out Figure 5-14 in the Reference Manual for the 6221.
Each differential conductance reading is from a computation using the voltage response to three different current excitation levels.

The individual source values and voltage measurements that go into a single DCON measurement are not available when making use of the differential conductance mode of operation.

You can send the UNIT S command to get SIEMens.

vaibhavinegi
Posts: 31
Joined: October 14th, 2014, 2:59 am
Country: India

Re: Getting value of I, V ans S for each reading in Diff. Co

Post by vaibhavinegi » July 28th, 2015, 9:24 pm

Then how you get all readings in KI6220.exe software.
The data sheet generated by it have all value including Source value, Voltage , Average Voltage and Differential Conductance. :?: :?: :?: :?:
Vaibhavi Negi
Research Scholar
Delhi; India

Andrea C
Keithley Applications
Keithley Applications
Posts: 1262
Joined: October 15th, 2010, 10:35 am
Country: United States
Contact:

Re: Getting value of I, V ans S for each reading in Diff. Co

Post by Andrea C » July 29th, 2015, 8:25 am

For the 6221, the format elements command is:
622x_format_elem.PNG
622x_format_elem.PNG (13.96 KiB) Viewed 11732 times
Perhaps you could invoke the NI I/O Trace capture tool and then run the KI6220 utility software to see what commands are being sent to the instrument from the software.

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