Keithley SourceMeter 2400, Руководство по обслуживанию, Страница: 20 / 137

2400-902-01 (G - Feb 2006)
Model 2400 Service Manual 1-8
Performance Verification
Taking the SourceMeter out of compliance
Verification measurements should not be made when the SourceMeter is in compliance. For
purposes of the verification tests, the SourceMeter can be taken out of compliance by going
into the edit mode and increasing the compliance limit.
NOTE
Do not take the unit out of compliance by decreasing the source value or changing
the range. Always use the recommended range and source settings when performing
the verification tests.
Output voltage accuracy
Follow the steps below to verify that Model 2400 output voltage accuracy is within specified
limits. This test involves setting the output voltage to each full-range value and measuring the
voltages with a precision digital multimeter.
1. With the power off, connect the digital multimeter to the Model 2400 INPUT/OUTPUT
jacks, as shown in Figure 1-1.
2. Select the multimeter DC volts measuring function.
NOTE
The default voltage source protection value is 40V. Before testing the 200V range, set
the voltage source protection value to >200V. To do so, press CONFIG then
SOURCE V to access the CONFIGURE V-SOURCE menu, then select PROTEC-
TION and set the limit value to >200V.
3. Press the Model 2400 SOURCE V key to source voltage, and make sure the source out-
put is turned on.
4. Verify output voltage accuracy for each of the voltages listed in Table 1-2. For each test
point:
• Select the correct source range.
• Set the Model 2400 output voltage to the indicated value.
• Verify that the multimeter reading is within the limits given in the table.