User`s guide

Chapter 3 Calibration Procedures

General Calibration/Adjustment Procedure

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 reading ¸ 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

Error

Calibrate

Error

Calibrate