Remote Preamp Voltage Measurement Accuracy - Keithley 6430 Instruction Manual

5. Verify output voltage accuracy for each of the voltages listed in Table 18-8. For each
test point:
• Select the correct source range.
• Set the Model 6430 output voltage to the indicated value.
• Verify that the multimeter reading is within the limits given in the table.
6. Repeat the procedure for negative output voltages with the same magnitudes as those
listed in Table 18-8.
Table 18-8
Remote PreAmp output voltage accuracy limits
Model 6430
source range
200mV
2V
20V
200V

Remote PreAmp voltage measurement accuracy

Follow the steps below to verify that Model 6430 Remote PreAmp voltage measurement
accuracy is within specified limits. The test involves setting the source voltage to full-range val-
ues, as measured by a precision digital multimeter, and then verifying that the Model 6430 volt-
age readings are within required limits.
1. With the power off, connect the digital multimeter to the PreAmp IN/OUT HIGH jack
as shown in Figure 18-5. (Connect the IN/OUT HIGH jack to the DMM INPUT HI and
LO jacks using the adapters and coax cable as shown.)
2. Select the SourceMeter 10µA measurement range.
3. Select the multimeter DC volts function.
4. Set the Model 6430 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 18-9. For each
test point:
• Select the correct source range.
• Set the Model 6430 output voltage to the indicated value as measured by the digital
multimeter.
• Verify that the Model 6430 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.
Model 6430
output voltage setting
200.000mV
2.00000V
20.0000V
200.000V
Performance Verification
Output voltage limits
(1 year, 18°-28°C)
199.360 to 200.640mV
1.99900 to 2.00100V
19.9936 to 20.0064V
199.936 to 200.064V
18-19