1-10
Performance Verification
Voltage measurement accuracy
Follow the steps below to verify that Model 2420 voltage measurement accuracy is within
specified limits. The test involves setting the source voltage to full-range values, as measured by
a precision digital multimeter, and then verifying that the Model 2420 voltage readings are with-
in required limits.
1.
With the power off, connect the digital multimeter to the Model 2420 INPUT/OUTPUT
jacks , as shown in Figure 1-1.
2.
Select the multimeter DC volts function.
3.
Set the voltage source protection to NONE. To do so, press CONFIG then SOURCE V
to access the CONFIGURE V-SOURCE menu. Select PROTECTION, and set the volt-
age source protection limit to NONE.
4.
Set the Model 2420 to both source and measure voltage by pressing the SOURCE V and
MEAS V keys, and make sure the source output is turned on.
5.
Verify output voltage accuracy for each of the voltages listed in Table 1-4. For each test
point:
• Select the correct source range.
• Set the Model 2420 output voltage to the indicated value as measured by the digital
multimeter.
• Verify that the Model 2420 voltage reading is within the limits given in the table.
NOTE
It may not be possible to set the voltage source to the specified value. Use the closest
possible setting, and modify reading limits accordingly.
6.
Repeat the procedure for negative source voltages with the same magnitudes as those
listed in Table 1-4.
7.
Repeat the entire procedure using the rear panel INPUT/OUTPUT jacks. Be sure to
select the rear panel jacks with the front panel TERMINALS key.
Table 1-3
Output voltage accuracy limits
Model 2420
source range
Model 2420 output
voltage setting
Output voltage limits
(1 year, 18°C-28°C)
200mV
2V
20V
60V
200.000mV
2.00000V
20.0000V
60.0000V
199.360 to 200.640mV
1.99900 to 2.00100V
19.9936 to 20.0064V
59.9808 to 60.0192V
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...
