3 Calibration Procedures
84 Keysight E3633A and E3634A Service Guide
17 Pressing the “Calibrate” key saves the change and selects the high current
calibration point. (“I HI 6.9000 A” - E3634A model)
If the entered number is within an acceptable range, an “ENTERED” message
appears for one second. If the entered number is not correct, an “MIN VALUE”
or “MAX VALUE” message appears for one second and the display shows the
middle current calibration point again. The display now shows the high current
calibration point.
18 Read the DVM and change the high current value on the display to match
the computed current (DVM read ing ¸ by shunt resistance).
For example, if the computed value is 19.499 A, adjust the current to 19.499 A
using the knob and arrow keys.
Notice that you should wait for the DVM reading to stabilize for accurate
calibration.
19 Pressing the ‘‘Calibrate’’ key saves the new calibration constants for the
output current and goes to the OCP calibration mode.
A “CALIBRATING” message appears for one second to indicate that the current
calibration is progressing and new calibration constants of “SETUP 3” are
stored. Then, the display shows the above message to indicate that the power
supply is ready for the OCP calibration.
If the calibration fails, an “DAC CAL FAIL” or “ADC CAL FAIL” message appears
for one second and the display shows the “CAL SETUP 3” for current
calibration again.
I HI 19.500 A (E3633A)
I HI 19.499 A
CAL SETUP 4
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