KEPCO KLP Series (older -1200 models) Operator Manual - Manual (Page 74)

4-2
KLP 073008
will be connected across the output terminals and the digital voltmeter will be connected across
the sense terminals of the shunt resistor.
1. Turn off power supply and disconnect load from output terminals at the rear of the unit.
2. Verify that power supply is configured for local error sensing (PAR. 2.7.5.1).
3. For voltage calibration connect DVM to (M+,S+) and (M-,S-) of terminal block at the rear of
power supply.
4. For current calibration connect an appropriate shunt resistor (see PAR 4.2) across the output
terminals and connect DVM to shunt resistor terminals.
5. Turn on power supply, exit SET mode by tapping either VOLTAGE or CURRENT control and
using a thin tool (e.g., a paper clip), press FUNCTION switch repeatedly until status displays
reads UTIL. Rotate either VOLTAGE or CURRENT control until status display reads CAL.
6. Tap DC OUTPUT switch to enter calibration mode. Status display reads "PASS" and CUR-
RENT DISPLAY reads 0000 while the unit waits for the calibration password to be entered.
The leftmost digit will be flashing.
7. Rotate CURRENT control to select a number from 0-9. Tap CURRENT control to advance to
next digit. Repeat this process until all four digits have been selected. Tap DC OUTPUT
switch to accept the number.
8. If password is incorrect, the status display reads "ERR". Repeat step 7 to enter the correct
password, or press the FUNCTION switch to exit calibration
9. If password is correct, status display reads V ?. Tapping either VOLTAGE or CURRENT
control continuously cycles through all the calibration choices. The status display reads: V ?
for voltage calibration C ? for current calibration, EXT? for remote analog calibration, and
EXIT to save the calibrated results. Tap the FUNCTION switch to exit calibration WITHOUT
saving any calibration data (see PAR. 4.3.4). Tap the DC OUTPUT switch to select the dis-
played choice.
NOTE: Calibrations may be done in any order.
10.Proceed to PAR. 4.3.1 for voltage calibration, PAR 4.3.2 for current calibration, PAR. 4.3.3
for external calibration or PAR. 4.3.4 to exit calibration
4.3.1 VOLTAGE CALIBRATION (LOCAL)
During voltage calibration, the voltage, voltage readback and remote analog voltage readback
are calibrated.
1. Minimum voltage is first; the status display reads V_0. Monitor DVM and rotate the VOLT-
AGE control to increase or decrease the output voltage until the DVM reads as close as pos-
sible to minimum rated voltage.
2. Tap the DC OUTPUT switch to accept the value. The status display then reads VMAX. Moni-
tor DVM and rotate the VOLTAGE control to increase or decrease the output voltage until
the DVM reads as close as possible to maximum rated voltage.