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Calibration
Voltage Mode Calibration
Voltage Mode Calibration
Voltage
1. Disconnect the load from the power supply which is to be calibrated.
Calibration
2. Connect a voltmeter across the power supply's output terminals.
Setup
Figure 4.1 Voltage Calibration Setup
Voltage
1. Set the power supply for calibration as in Figure 4.1.
Program
2. Activate calibration mode by sending command CMODE ON or CMODE 1 to
Calibration
Procedure
3. Send command VLO; ILO to the power supply. Measure and record the output
4. Send command VHI; IHI to the supply. Measure and record the output voltage
5. Send the command VDATA <vlo>,<vhi> where <vlo> and <vhi> are the values
6. Program the supply at various levels using the VSET command to confirm that
7. Turn off calibration mode by sending the command CMODE OFF or CMODE 0
52
the power supply.
shown on the external voltmeter.
as shown on the external voltmeter.
read from the voltmeter when the VLO and VHI commands were sent. When the
power supply is calibrated, the low to high voltage program calibration values
are stored as constants.
the calibration was successful and that linearity is observed. See the voltage
program accuracy specification in Section 1.
to the power supply.
Power Supply
Power Supply
Positive Output
Negative Output
V
-
+
VOLTMETER
Operating Manual for RS-232 for XPD Series Power Supply
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