Service and Maintenance 8
General Calibration or Adjustment Procedure
E364xA User’s and Service Guide 219
10 Run the OVP calibration.
CALIBRATING
The message above is displayed to indicate that the
calibration is in progress. It takes approximately 10
seconds to complete the calibration. If the calibration
fails, an error message will be displayed for a second and
you will hear a beep, and then return to the OVP
calibration mode again.
Current calibration
11 Select the low- end current calibration point.
I LO 0.200,0
12 Enter the computed value (DVM reading divided by the
shunt resistance) by using the knob and resolution
selection keys. Notice that you should wait for the DVM
reading to stabilize for accurate calibration during the
current calibration.
I LO 0.190,0
13 Save the changes and select the middle current calibration
point.
I MI 1.500,0
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 current calibration point again as
proceeding.
14 Enter the computed value (DVM reading divided by the
shunt resistance) by using the knob and resolution
selection keys.
I MI 1.540,0
Connect an appropriate shunt 0.01 Ω across the output terminals, and
connect a digital voltmeter across the shunt resistor for the current
calibration.
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