8 Service and Maintenance
230 E364xA User’s and Service Guide
Calibration Record
Table 8-9 Calibration record
Step Calibration description Measurement
mode (DVM)
Supply being
adjusted
1 Turn on the calibration mode by holding down the Calibrate key as you turn
on the power supply until you hear a long beep.
2 Unsecure the power supply if secured. (Refer to “Calibration security” on
page 82.)
3 Press the Calibrate key to move down the menu to the voltage calibration
menu. The VOLTAGE CAL message is displayed. Press the Calibrate key to
select the low voltage calibration point.
Voltage calibration
4 A low voltage calibration point is displayed. Enter the DVM reading by using
the knob and resolution keys. Press the Calibrate key to save the changes
and select the middle calibration point.
VLow voltage
calibration
5 A middle voltage calibration point is displayed. Enter the DVM reading by
using the knob and resolution selection keys. Press the Calibrate key to
save the changes and select the high calibration point.
VMiddle voltage
calibration
6 A high voltage calibration point is displayed. Enter the DVM reading by
using the knob and resolution selection keys. Press the Calibrate key to
save the changes and select the OVP calibration.
VHigh voltage
calibration
7 OVP CAL is displayed. Press the Calibrate key to run the overvoltage
calibration. The CALIBRATING message is displayed to indicate that the
calibration is in progress.
OVP calibration
8 Connect the shunt resistor (0.01 Ω) across the output terminals and press
the Calibrate key to select the current calibration.
Current calibration
9 A low current calibration point is displayed. Enter the computed value (DVM
reading divided by the shunt resistance) by using the knob and resolution
keys. Press the Calibrate key to save the changes and select the middle
calibration point.
ALow current
calibration
10 A middle current calibration point is displayed. Enter the computed value
(DVM reading divided by the shunt resistance) by using the knob and
resolution keys. Press the Calibrate key to save the changes and select the
high calibration point.
A Middle current
calibration