4-4
KLP 073008
1. The status display reads
INPV
. Refer to PAR 3.7 to connect the reference voltage used to
define full scale output voltage. as the source as described in PAR 3.7.
2. When the reference voltage is at the desired value, tap the
DC OUTPUT
switch to accept the
value. When the calibration is saved, this analog voltage will be equivalent to full scale out-
put voltage.
The full scale output voltage is determined by the virtual settings in effect.
3. The status display reads
INPC
. Connect the reference voltage used to define full scale out-
put current as described in PAR 3.7.
4. When the reference voltage is at the desired value, tap the
DC OUTPUT
switch to accept the
value. When the calibration is saved, this voltage value will be equivalent to full scale output
current.
The full scale output current is determined by the virtual settings in effect.
5. The status display reads
EXIT
. Proceed to PAR. 4.3.4 to exit calibration.
4.3.4
CALIBRATION EXIT (LOCAL)
NOTE: using a thin tool (e.g., a paper clip), tap the
FUNCTION
switch to exit calibration WITH-
OUT saving any calibration data. If no calibrations were completed, then the unit
advances to the next function as if the
FUNCTION
switch was pressed.
1. When the status display reads
EXIT
, tap the
DC OUTPUT
switch to save the calibration.
2. The status display reads
DATE
. The
DC VOLTS
display represents MMDD (month, day) and
the
DC AMPS
display represents YYYY (year). The factory calibration date is displayed with
the first digit blinking as a starting point to enter the current date. Rotate either the
VOLT-
AGE
or
CURRENT
controls to change the digit, then tap either control to move to the next
digit.
NOTE: For purposes of traceability the user is strongly urged to enter the calibration date upon
completion of calibration. If a date is not entered, no date is saved.
3. Tap
DC OUTPUT
switch to accept date. If any calibration (voltage, current or external) was
completed, the unit will save the new calibration. The status display reads "DONE" while cal-
ibration is being saved.
4. Once saved the unit enters Virtual Model mode. Follow the procedure in PAR 3.2.5 to set the
virtual model.
NOTE: The virtual model is always reset following calibration. If voltage calibration is com-
pleted (regardless of whether or not current calibration is completed), the virtual model
voltage is set for maximum rated voltage, and current is set to the value corresponding
to 1200 Watts. If ONLY current calibration is completed, the virtual model current will
be set for maximum rated current and voltage is set to the value corresponding to 1200
Watts.
4.4
CALIBRATION USING VISA DRIVER DEMO PROGRAM SOFT PANEL
For voltage calibration all loads must be disconnected and the sense terminals connected to the
corresponding output terminals. The digital voltmeter will be connected to the output of the
power supply. For current calibration after disconnecting all loads an appropriate shunt resistor
will be connected across the output terminals and the digital voltmeter will be connected across
the sense terminals of the shunt resistor.
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