Calibration 2-19
Table 2-9
Voltage range calibration commands
*1. Perform complete procedure for each range, where <Range> = 0.2, 2, 20, and 60, and
<Source_value> = 0.2, 2, 20, and 60.
2. <DMM_Reading> parameter is multimeter reading from previous step.
3. Use :SYST:ERR? query to check for errors.
Step 3: Current calibration
1.
Connect the Model 2420 to the digital multimeter (see Figure 2-2), and select the multi-
meter DC current function.
2.
Send the commands summarized in Table 2-10 in the order listed to initialize current cal-
ibration.
3.
Calibrate the 10
µ
A to 1A current ranges using the procedure summarized in Table 2-11.
For each range:
•
Send the :SOUR:CURR:RANG command to select the source and sense range
being calibrated. For example, for the 1mA range, the command is:
:SOUR:CURR:RANG 1E-3
Step Command/procedure*
Description
1
:SOUR:VOLT:RANGE <Range>
Select source range.
2
:SOUR:VOLT -<Source_value>
Establish negative full-range polarity.
3
Take DMM reading.
Read actual output value.
4
:CAL:PROT:SOUR <DMM_Reading>
Calibrate sense function negative full scale.
5
Check 2420 for errors.
6
:CAL:PROT:SENS <DMM_Reading>
Calibrate source function negative full scale.
7
Check 2420 for errors.
8
:SOUR:VOLT 0.0
Set output to 0V.
9
Take DMM reading.
Read actual output value.
10
:CAL:PROT:SOUR <DMM_Reading>
Calibrate sense function negative zero.
11
Check 2420 for errors.
12
:CAL:PROT:SENS <DMM_Reading>
Calibration source function negative zero.
13
Check 2420 for errors.
14
:SOUR:VOLT +<Source_value>
Establish positive full-range polarity.
15
Take DMM reading.
Read actual output value
16
:CAL:PROT:SOUR <DMM_Reading>
Calibrate sense function positive full scale.
17
Check 2420 for errors.
18
:CAL:PROT:SENS <DMM_Reading>
Calibrate source function positive full scale.
19
Check 2420 for errors.
20
:SOUR:VOLT 0.0
Set output to 0V.
21
Take DMM reading.
Read actual output value.
22
:CAL:PROT:SOUR <DMM_Reading>
Calibrate source positive zero.
Summary of Contents for SourceMeter 3A 2420
Page 2: ...Model 24203A SourceMeter Service Manual A G R E A T E R M E A S U R E O F C O N F I D E N C E...
Page 15: ...1 Performance Verification...
Page 31: ...2 Calibration...
Page 53: ...3 Routine Maintenance...
Page 56: ...3 4 Routine Maintenance...
Page 57: ...4 Troubleshooting...
Page 70: ...4 14 Troubleshooting...
Page 71: ...5 Disassembly...
Page 78: ...5 8 Disassembly...
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Page 84: ...6 Replaceable Parts...
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Page 107: ...A Specifications...
Page 112: ...A 6 Specifications...
Page 113: ...B Command Reference...
Page 124: ...B 12 Command Reference...
Page 125: ...C Calibration Programs...
