Chapter 3 Calibration Procedures
General Calibration/Adjustment Procedure
68
10 Read the DVM and change the high voltage value on the display to match
the measured voltage.
For example, if the DVM reads 19.495 V, adjust the voltage to 19.495 V using
the knob and arrow keys.
11 Pressing
(Calibrate) key saves the new voltage calibration
constants
,
and goes to the OVP calibration mode.
A ‘‘CAL IBR ATING’’ message appears for one secon d to indicate that the
voltage calibration is progressing and new voltage calibration constants of
‘‘SETUP 1’’ are store d. Then, the display shows above me ssage to indicate that
the power supply is ready for the OVP calibration.
If the calibration fails, a ‘‘DAC CAL FAIL’’ or ‘‘ADC CAL FAIL ’’ message appears
for one second and the displ ay shows the ‘‘CA L SE TUP 1’’ for vol tage
calibration again.
Current and OCP Calibration
12 Pressing
(Calibrate) key saves the new calibration constants for
OVP circuit
and goes to the current calibration mode.
A ‘‘CALIBRA TING’’ message appears for about several seconds to indicate that
the OVP calibration is progressing and new calibration constants of ‘‘SETUP
2’’ are stored. Then, the display shows the above message to indicate that the
power supply is ready for the current calibration.
V HI 19.495 V
CAL SETUP 2
CAL SETUP 3
Connect an appropriate shunt 0.01
Ω
across the outpu t term in als , an d
conn ec t a digital voltme ter acros s the sh unt re si stor for the cu rr en t
calibration.
Error
Calibrate
Error
Calibrate
Error
Calibrate
Error
Calibrate
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