Tektronix KEITHLEY SourceMeter 2400 Series Calibration And Adjustment Manual page 42

Section 4: Adjustment
Current range calibration adjustment commands
Step Command/procedure*
1
:SOUR:CURR:RANG <Range>
2 :SOUR:CURR -<Range>
3 DMM reading 1.**
4 (calculated I) = V (DMM reading 1) / R
5 :CAL:ADJ:SOUR <calculated I>
6 :SYSTem:ERRor?
7 :CAL:ADJ:SENS <calculated I>
8
:SYSTem:ERRor?
9 :SOUR:CURR 0.0
10 DMM reading 2.**
11 (calculated I) = V (DMM reading 2) / R
12 :CAL:ADJ:SOUR <calculated I>
13
:SYSTem:ERRor?
14 :CAL:ADJ:SENS <calculated I>
15 :SYSTem:ERRor?
16 :SOUR:CURR +<Range>
17 DMM reading 3.**
18 (calculated I) = V (DMM reading 3) / R
19 :CAL:ADJ:SOUR <calculated I>
20 :SYSTem:ERRor?
21 :CAL:ADJ:SENS <calculated I>
22 :SYSTem:ERRor?
23 :SOUR:CURR 0.0
24 DMM reading 4.**
25 (calculated I) = V (DMM reading 4) / R
26 :CAL:ADJ:SOUR <calculated I>
27 :SYSTem:ERRor?
* Perform the complete procedure for each range, where <Range> = 4, 5, and 7. There are no
adjustment steps for the 10 A range.
** The <DMM_Readingn> parameter is the DMM reading from the previous step.
*** To get more accurate readings when using a shunt resistor, measure the resistance of the shunt resistor (rather
than using manufacturer specifications) and use that value in the shunt resistor current calculation.
4-16
Model 2461 Calibration and Adjustment Manual
Description
Select the source range.
Establish negative polarity.
Using the DMM, measure voltage across the shunt
resistor.
Calculate the shunt resistor current.***
Adjust the source function negative full scale.
Check Model 2461 for errors.
Adjust the sense function negative full scale.
Check Model 2461 for errors.
Set the output to 0 A.
Using the DMM, measure the voltage across the
shunt resistor.
Calculate the shunt resistor current.
Adjust the source function negative zero.
Check Model 2461 for errors.
Adjust the sense function negative zero.
Check Model 2461 for errors.
Establish positive polarity.
Using the DMM, measure voltage across the shunt
resistor.
Calculate the shunt resistor current.
Adjust the sense function positive full scale.
Check Model 2461 for errors.
Adjust the source function positive full scale.
Check Model 2461 for errors.
Set the output to 0 A.
Using the DMM, measure the voltage across the
shunt resistor.
Calculate the shunt resistor current.
Adjust the source positive zero.
Check Model 2461 for errors.
2461-905-01 Rev. A / February 2016