BIT 4886 051010
3-11
3.3.2.2
CALIBRATION PROCEDURE
1. Click on the
Calibration Off
button on the main panel (see Figure 3-4).This will open a cali-
bration panel (see Figure 3-4 and Table 3-4) that allows calibration in either voltage or cur-
rent mode.
2. The password (DEFAULT) has been set at the factory. If it has not been changed, it will be
displayed in the box adjacent to the
Start
button on the right side of the panel. If the pass-
word has been changed from DEFAULT, substitute the proper password in the box adjacent
to the
Start
button and click the
Start
button. If the password has been forgotten, consult
factory. If the password is correct, the
Volt
and
Curr
buttons will become active. Otherwise
the message
ERROR! - Wrong Password
is displayed and you must enter the correct
password and click
Start
again.
3. For Voltage Calibration, click
Volt
button. The text window reads
Volt ZERO
and the mes-
sage
Adjust for ZERO R81 (Eo Zero) on BOP A1 card.
is displayed.
4. Connect a DVM to the output of the unit and adjust the R81 Potentiometer on A1 board of
BOP until the DVM reads the voltage specified in Table 3-1 for Low Range Zero, then click
OK
button.
NOTE: Use external DVM for all measurements.
5. The text window reads
Volt ZERO
and the message
Measure and Adjust.
is displayed.
Using the
Í
and
Î
and
and
buttons (see PAR. 3.3.2.1), adjust the output until the
DVM reads the voltage specified in Table 3-1 for VOLT ZERO, then click
OK
button.
6. The text window reads
Volt MAX
and the message
Measure and Adjust.
is displayed.
Using the
Í
and
Î
and
and
buttons (see PAR. 3.3.2.1), adjust until DVM reading is
as specified in Table 3-1 for High Range Accuracy. Click
OK
when done.
7. The text window reads
Volt
MIN
and the message
Measure and Adjust.
is displayed.
Using the
Í
and
Î
and
and
buttons (see PAR. 3.3.2.1), adjust until DVM reading is
as specified in Table 3-1 for High Range Accuracy, then click
OK
button. NOTE: If the
<<<—
or
—>>>
button is depressed, return to step 6 after clicking
OK
.
8. The text window reads
LVolt MAX
and the message
Measure and Adjust.
is displayed.
Using the
Í
and
Î
and
and
buttons (see PAR. 3.3.2.1), adjust output until DVM
reads voltage specified in Table 3-1 for Low Range Accuracy, then click
OK
button.
9. The text window reads
LVolt MIN
and the message
Measure and Adjust.
is displayed.
Using the
Í
and
Î
and
and
buttons (see PAR. 3.3.2.1), adjust until DVM reads volt-
age specified in Table 3-1 for Low Range Accuracy, then click
OK
button. NOTE: If the
<<<—
or
—>>>
button is depressed, return to step 8 after clicking
OK
.
10.The text window reads
Volt PROTECT
and the message
Measure and Adjust.
is dis-
played. Using the
Í
and
Î
and
and
buttons (see PAR. 3.3.2.1), adjust until DVM
reading is as specified in Table 3-1. Click
OK
when done.
11. Voltage calibration is complete. If desired, the voltage calibration can be repeated by clicking
Volt
at the calibration panel (Figure 3-4). If current calibration is not necessary, proceed to
