KEPCO KLP SERIES, Operator'S Manual

Page: 77 / 110

KLP 073008
4-5
1. Turn off power supply and disconnect load from output bus bar at the rear of the unit.
2. Verify that power supply is configured for local error sensing (See 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, and after the status display shows
SET
, start the KLP VISA demo pro-
gram.
6. Click the Calibrate OPEN button on the VISA demo main panel. The Calibration window
opens.
7. Use the computer keyboard to enter the password in the text box displaying the word PASS-
WORD, then press the ENTER key.
8. If password is correct, status display on the main panel reads CAL . If password is incorrect,
the text box displays "WRONG #". Repeat step 7 to enter the correct password, or click the
Calibrate CLOSE button on the main panel to exit calibration.
NOTE: Calibrations may be done in any order.
9. Proceed to PAR. 4.4.1 for voltage calibration, PAR 4.4.2 for current calibration., PAR. 4.4.3
for external calibration or PAR. 4.4.4 to exit calibration
4.4.1 VOLTAGE CALIBRATION (VISA DEMO)
During voltage calibration, the voltage, voltage readback and remote analog voltage readback
are calibrated.
1. Click the VOLTAGE button on the Calibration window to start voltage calibration. Minimum
voltage is first; the status display (on the main panel) reads V_0 . Monitor DVM and click the
“+” button to increase and the “–“ to decrease the output voltage until the DVM reads as
close as possible to minimum rated POSITIVE voltage.
2. Click the PRESS TO ACCEPT button to accept the value. The status display then reads
VMAX . Monitor DVM and click the “+” button to increase and the “–“ to decrease the output
voltage until the DVM reads as close as possible to maximum rated voltage.
3. Click the PRESS TO ACCEPT button to accept the value. The status display then reads
OUTV . Connect to DVM (+) to Analog I/O Port J2, pin 6 and DVM (–) to pin 13. Click the “+”
button to increase and the “–-“ button to decrease the output voltage until the DVM reads as
close as possible to 10V.
4. Click the PRESS TO ACCEPT button to accept the value. The status display will not change.
At the calibration window, click the CURRENT Button to proceed to current calibration (see
PAR. 4.4.2) .