Technical data

8 Service and Maintenance
General Calibration or Adjustment Procedure
208 E364xA User’s and Service Guide
Front panel voltage and current calibration
In the following procedure, the E3640A is referenced to
describe the calibration procedure as an example, so a
different calibration value for each calibration point may be
prompted to be adjusted for your specific model.
1 Turn on the calibration mode.
CAL MODE
Turn on the calibration mode by holding down the
(Calibrate) key as you turn on the power supply and hold
down the key until you hear a long beep. Make sure that
the power supply is in the CV mode. If the power supply
is not in the CV mode, an error occurs.
Voltage and OVP calibration
2 Move down a level to the voltage calibration mode.
VOLTAGE CAL
3 Select the low- end voltage calibration point.
V LO 0.5000
4 Enter the reading you obtained from the DVM by using
the knob and resolution selection keys.
V LO 0.4500
5 Save the changes and select the middle voltage calibration
point.
V MI 10.000
If the entered number is within an acceptable range, an
ENTERED message appears for a second. If the entered
number is not correct, an error message will be displayed
for a second and you will hear a beep, and then return to
the low, middle, or high voltage calibration point again.
NOTE
Before attempting to calibrate the power supply, you must unsecure the
power supply, and disconnect all loads from the power supply and connect
a DVM across the output terminals. Refer to “Calibration” on page 58 to
unsecure.
Calibrate
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Power
Calibrate
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Calibrate
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Calibrate
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Calibrate
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