KEPCO KLP Series User Manual, Rev 4 - Manual (Page 83)

KLP 091313
4-3
9. When the password is accepted, status display reads V ?. Rotating 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 cali-
bration, 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 displayed 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. To start, tap the DC OUTPUT switch while V? appears in the status
display: the status display then reads V_0. Monitor DVM and rotate the VOLTAGE control to
increase or decrease the output voltage until the DVM reads minimum positive or zero Volts.
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 (but not less than) the rated model voltage (see Table 1-
2).
3. Tap the DC OUTPUT switch to accept the value; the status display now reads OUTV. At the
ANALOG I/O PORT J2, connect the DVM to VOLT_RBACK and GND as shown in Figure 4-
1. Rotate the VOLTAGE control to increase or decrease the output voltage until the DVM
reads as close as possible to 10V.
4. Tap the DC OUTPUT switch to accept the value. The status display reads C ?. Tap the DC
OUTPUT switch to proceed to Current Calibration (see PAR. 4.3.2), or rotate either VOLT-
AGE or CURRENT control to advance to next choice
4.3.2 CURRENT CALIBRATION (LOCAL)
During current calibration, the current, current readback and analog current readback are cali-
brated.
1. The status display reads LOAD. When the shunt and DVM are connected per PAR. 4.3, step
4, tap the DC OUTPUT switch. The status display reads CMAX.
2. Rotate the CURRENT control to increase or decrease the DVM reading until the DVM read-
ing corresponds as close as possible to maximum rated current (Calculate current as fol-
lows:
I (Amperes) = DVM reading (Volts) / Shunt Resistance (Ohms).
3. Tap the DC OUTPUT switch to accept the value. The status display reads C_0. Rotate the
CURRENT control to increase or decrease the DVM reading until the DVM reading corre-
sponds to minimum positive or zero current (Calculate current as follows:
I (Amperes) = DVM reading (Volts) / Shunt Resistance (Ohms).