Keysight E3632A, Service Manual

Page: 42 / 73

1 Calibration Procedures
44 Keysight E3632A Service Guide
To calibrate the output voltages and currents of the power supply from the front
panel, proceed as follows:
1 Unsecure the power supply.
To calibrate the voltage and current, you must unsecure the power supply
according to “To unsecure the power supply for calibration” on page 40.
2 Disconnect all loads from the power supply and connect a DVM across output
terminals.
3 Turn on the calibration mode.
CAL MODE
Turn on the calibration mode by pressing the Calibrate key while
simultaneously turning on the power supply, and then continue to hold the
Calibrate key for about 5 seconds until a beep is heard. Make sure that the
power supply is in CV mode. If the power supply is not in CV mode, an error
occurs.
Voltage and OVP calibration
4 Move down a level to the voltage calibration mode.
CAL SETUP 1
The display shows the above message to indicate that the power supply is
ready for the voltage calibration.
5 Calibrate DAC and select the low voltage calibration point.
30 LEFT
The START BITCAL message is displayed for about
3 seconds to indicate that the power supply is ready for DAC calibration. Then
it counts down numbers from 30 to 0.
V LO 0.5000 V
Then, the display shows the low voltage calibration point.
6 Read the DVM and change the low voltage value on the display to match the
measured voltage.
For example, if the DVM reading is 0.4500 V, adjust the voltage to 0.4500 V
using the knob and resolution selection keys.