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Chapter 3 Calibration Procedures
Constant Current (CC) Verifications
Constant Current (CC) Verifications
Constant Current Test Setup
Follow the general setup instructions in the "Measurement Techniques" section starting on page 45 and the specific instructions will be given in the following paragraphs.
Current Programming and Readback Accuracy
This test verifies that the current programming and GPIB or
You should program the power supply over the remote interface for this test to avoid round off errors.
1Turn off the power supply and connect a 0.19 current monitoring resistor (RM) across the output to be tested and a digital voltmeter across the current monitoring resistor (RM).
2Turn on the power supply. Enable the outputs and select the desired output to be tested by sending the commands:
OUTP ON
INST {P6VP25VN25V}
3Program the selected output voltage to 5.0 volts and the current to 0 amps by sending the commands:
VOLT 5
CURR 0
4Divide the voltage drop (DVM reading) across the current monitoring resistor
(RM) by its resistance to convert to amps and record this value (IO). This value should be within the limits specified below for each output tested. Also, note that the CC, Adrs, Lmt, and Rmt annunciators are on.
Output | Programming Accuracy |
|
|
+6V | 0 A ± 10 mA |
|
|
+25V | 0 A ± 4 mA |
|
|
0 A ± 4 mA | |
|
|
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