KEPCO BOP-GL 1KW Operator Manual Firmware Ver.3.05 and higher - Manual (Page 116)

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BOP-1K-GL 022814
3. Move the DVM to pin 15 referenced to pin 4 of the Analog I/O port. Using an adjustment
screwdriver, adjust the ZERO ADJ pot (see Figure 2-2) until the DVM reads 0V ±1mV.
Restore the DVM across OUT S and COM S as shown in Figure 4-1.
4. Set the BOP to maximum positive output voltage by sending
CAL:VOLT MAX
. Measure the
voltage output using the DVM. To adjust, send
CAL:DATA
commands as needed (see PAR.
4.3b) until the DVM reading is as close as possible above the nominal full scale value within
the tolerance specified in Table 4-3 for +FULL SCALE VOLTAGE.
5. Move the DVM to pin 15 referenced to pin 4 of the Analog I/O port. Using an adjustment
screwdriver, adjust the FULL SCALE ADJ pot (see Figure 2-2) until the DVM reads +10V
±1mV. Restore the DVM across OUT S and COM S as shown in Figure 4-1.
6. Set the BOP to maximum negative output voltage by sending
CAL:VOLT MIN
. To adjust,
send the
CAL:DATA
command as needed (see PAR. 4.3b) until the reading is as close as
possible above (absolute value) the nominal full scale value within the limits specified in
Table 4-3 for –FULL SCALE VOLTAGE.
7. Send
CAL:VPR MAX
to adjust the maximum positive voltage protection limit of the power
supply. Send the
CAL:DATA
commands as needed (see PAR. 4.3c) until the reading is as
close as possible above the nominal full scale value within the limits specified in Table 4-3 for
+FULL SCALE VPR LIMIT.
8. Send
CAL:VPR MIN
to adjust the maximum negative protection limit of the power supply.
Send the
CAL:DATA
commands as needed (see PAR. 4.3c) until the reading is as close as
possible above (absolute value) the nominal full scale value within the limits specified in
Table 4-3 for –FULL SCALE VPR LIMIT.
9. Connect a 0V ±0.1mV d-c reference to pin 11 (EXT_REF) referenced to pin 10 (SGND) of
the Analog I/O Port connector (A2A5J6). Set the BOP to zero volts output by sending
CAL:VEXT ZERO
. Send
CAL:DATA
commands as needed (see PAR. 4.3a) to adjust the
BOP output voltage until the DVM reads as close to zero as possible within tolerance speci-
fied in Table 4-3 for VOLTAGE ZERO.
NOTE: Accuracy of the 10V d-c reference must be ±0.1mV in order for the calibrated unit to
meet published specifications.
10.Replace 0V reference at pin 11 (EXT_REF) of the Analog I/O Port connector (A2A5J6) with a
+10V d-c reference. Set the BOP to maximum positive output voltage by sending
CAL:VEXT MAX
. Measure the output voltage using the DVM. To adjust, send
CAL:DATA
commands as needed (see PAR. 4.3b) until the DVM reading is as close as possible above
the nominal full scale value within the tolerance specified in Table 4-3 for +FULL SCALE
VOLTAGE.
11. Replace +10V reference at pin 11 (EXT_REF) of the Analog I/O Port connector (A2A5J6)
with a 0V ±0.1mV d-c reference. Set the BOP to zero volts output by sending
CAL:VGA ZERO
. Send
CAL:DATA
commands as needed (see PAR. 4.3a) to adjust the BOP
output until the DVM reads as close to zero as possible within tolerance specified in Table 4-
3 for VOLTAGE ZERO.
12.Replace 0V reference at pin 11 (EXT_REF) of the Analog I/O Port connector (A2A5J6) with a
+10V d-c reference. Set the BOP to maximum positive output voltage by sending
CAL:VGA MAX
. Measure the output voltage using the DVM. To adjust, send
CAL:DATA