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1 understanding the calibration process, Understanding the calibration process -10, 4): v – KEPCO BOP 1KW-MG Operator Manual, Firmware Ver.2.01 to 2.37 User Manual

Page 134: Ar. 4.4), remo, S 29 and 30 cali, S 31 and 32 calib

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4-10

BOP-1K 022108

connector (A2A5J6). Then send the

CAL:ZERO

command. This enables the BOP to recog-

nize that the voltage at the ILIM_EXTERNAL pins is 0V.

27.Connect +10.0V ±0.1mV d-c reference voltage from the external voltage source to

ILIM+_EXTERNAL and ILIM-_EXTERNAL, pins 5 and 13, referenced to pin 12 (GND1) of
the BOP analog I/O connector (A2A5J6). Then send

CAL:CLIM MAX

, then

CAL:ZERO

com-

mands. This enables the BOP to recognize that the voltage at the ILIM+_EXTERNAL pin is
10.0V.

28.Set the BOP to minimum (maximum negative) output by sending

CAL:VLIM MIN

, then send

the

CAL:ZERO

command. This enables the BOP to recognize that the voltage at the VLIM-

_EXTERNAL pin is 10.0V.

29.Send

CAL:ZERO

to prepare for calibration of IOUT_M_UNIT (master output) control signal.

Connect the DVM to pin 6 (IOUT_M_UNIT) referenced to pin 1 (SGND) of the PAR/SER
CONTROL IN connector (A2A5J3). Set the BOP to zero output current by sending

CAL:IOUT ZERO

. Send

CAL:DATA

commands as needed (see PAR. 4.3b) to adjust the

BOP output until the DVM reads 0V ±1mV.

30.Set the BOP to maximum positive output current by sending

CAL:IOUT MAX

. With the DVM

still connected to pin 6 (IOUT_M_UNIT) referenced to pin 1 (SGND) of the PAR/SER CON-
TROL IN connector measure the voltage output using the DVM. Send

CAL:DATA

commands

as needed (see PAR. 4.2.1a) until the DVM reading is +10V ±1.0mV.

31.Send

CAL:ZERO

to prepare for calibration of S_IN_PARALLEL (slave input) control signal.

Connect a 0V ±0.1mV d-c reference to pin 3 (S_IN_PARALLEL) referenced to pin 1 (SGND)
of the PAR/SER CONTROL IN connector (A2A5J3). Set the BOP to zero output current by
sending

CAL:PAR ZERO

. Connect the DVM across the sense resistor to measure the BOP

output current and send

CAL:DATA

commands as needed (see PAR. 4.3b) to adjust the

BOP output current until the DVM reads as close to zero as possible within tolerance speci-
fied in Table 4-4 for CURRENT ZERO.

NOTE: Accuracy of the 10V d-c reference must be ±0.1mV in order for the calibrated unit to

meet published specifications.

32.Connect a +10V ±0.1mV d-c reference to pin 3 (S_IN_PARALLEL) referenced to pin 1

(SGND) of the PAR/SER CONTROL IN connector (A2A5J3). Set the BOP to maximum pos-
itive output current by sending

CAL:PAR MAX

. Measure the output current using the DVM.

Send

CAL:DATA

commands as needed (see PAR. 4.3a) until the DVM reading is as speci-

fied in Table 4-3 for +FULL SCALE CURRENT.

33.Save the calibration levels by sending

CAL:SAVE 12/21/2003

. The characters at the end

are optional and represent the calibration date of the power supply. The date entered in this
manner is reported in the

*idn?

query.

4.4

CALIBRATION USING FRONT PANEL KEYPAD IN LOCAL MODE

The following paragraphs describe the screens and keys used in the calibration process.

4.4.1

UNDERSTANDING THE CALIBRATION PROCESS

The following steps describe the calibration screens, and associated keys active during the cali-
bration process. Refer to PAR. 4.4.2 for full calibration procedure.