11
User Action Balance Response
1 Remove any containers or weighing samples so
that nothing is on the weighing pan. Then press
the ZERO button
Zeros are displayed
2 Press the RANGE/FUNCTION button (or
MODE and RANGE buttons simultaneously for
dual range balance models)
Balance display cycles repeatedly through PCS,
HI OK LO, CAL 1, CAL 2, and %.
3 Press the MODE button when CAL 1 appears CAL 1 and a flashing 0 are displayed.
4 Wait 10 seconds for the balance to stabilize, then
press the ZERO button.
The display stops flashing, CAL 1 and a solid 0
are displayed. In approximately 15 seconds,
when this step is complete, a single weight or
two alternating weights will begin flashing on
the display.
5 Place one of the flashing weights on the bal-
ance’s weighing pan.
The display stops flashing and the selected
weight is displayed.
6
Do not remove the weight from the pan.
The display will momentarily blink, then the se-
lected weight will continue to be displayed. In
approximately 15 seconds, when this step is com-
plete, the display will blank, flash “OK”, then
shows CAL 1 and a flashing 0.
7 To continue and recalibrate the internal calibra-
tion weight, proceed to step 8.
To stop here without calibrating the internal cali-
bration weight, remove the calibration weight
from the weighing pan and press the MODE
button.
The balance has been calibrated and the display
returns to zeros.
8 Remove the calibration weight from the weigh-
ing pan, then press the ZERO button.
The display shows a flashing CAL and the inter-
nal weight recalibration begins. IntLOAd will
appear in the display. You will hear the internal
motor and see the capacity tracker fill and then
empty. The procedure will take about 30 to 90
seconds. When complete, the display will blank
and then return to its normal weighing mode. The
balance is now calibrated to the external weight
and the internal weight is calibrated to the exter-
nal calibration weight.
RS-232 Command for Autocalibration:
To initiate a CAL 1 using the motor driven internal calibration weight via a RS-232 command, issue the com-
mand ACAL[CR]. The automatic internal weight calibration will begin immediately without further user inter-
action. For a more complete discussion about RS-232, please see the Bi-directional RS-232 Command Set
section.
(CAL 2) Linearity:
Linearity is set in the balance’s software at the factory during the manufacturing process. It requires a special
set of weights that are not available commercially. When a CAL 1 function is performed the linearity is auto-
matically reset as well. Unless the balance is damaged the linearity will not change. Therefore, CAL 2 should
never be performed by the user.
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