Keysight E3631A, Service Manual

Page: 83 / 131

Calibration Procedures 3
Keysight E3631A Service Guide 81
7 Pressing the "Calibrate" key saves the change and selects the second voltage
calibration point for the +6V supply.
If the entered number is within an acceptable range, an "ENTERED" message
appears for one second. The display now shows the second voltage calibration
point for the +6V supply. If the entered number is not correct, an "INVALID
DATA" message appears for one second and the display shows the first voltage
calibration point again.
8 Read the DVM and change the second voltage value on the display to match
the measured voltage.
For example, if the DVM reads 5.9990 V, adjust the voltage to 5.9990 V using
the knob and arrow keys.
9 Pressing the "Calibrate" key saves the new calibration constants for the +6V
output voltage and goes to the current calibration mode for the +6V supply.
If the entered number is within an acceptable range, a "CALIBRATING"
message appears for one second to indicate that the calibration is successful
and that new calibration constants of "SETUP 1" are stored. Then, the display
shows the above message to indicate that the power supply is ready for the
current calibration for +6V supply.
If the entered number is not correct, an "INVALID DATA" message appears for
one second and the display shows the second voltage calibration point again.
If the calibration fails, a "CAL FAIL" message appears for one second and the
display shows the "CAL SETUP 1" for the voltage calibration of the +6V supply
again.
*Connect an appropriate shunt (see Table 3-1 ) across the +6V supply's output
terminals, and connect a digital voltmeter across the shunt resistor for the
current calibration.