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67XXU USB/Serial Scale Service Manual
6.1.2 Linearity
The scale linearity can be calibrated with a zero reference and a full scale reference or
multiple linearity weight values. The linearity calibration is determined by the settings
in the CAL-LINE parameter.
1.
When LINE is selected, press the
[TARE]
key to enter linearity calibration.
2.
CAL.P0
will be displayed with a zero value. Remove all weight on the scale and
then press the
[TARE]
key to confirm zero point calibration. The zero weight
will flash while capturing the zero point. After getting the reasonable zero-point
data, the zero weight will become steady.
3.
The first default standard weight is displayed after
CAL.P1
being shown. Put
the corresponding weight (more than 10%FS weight) onto scale. The default
standard weight is 100%FS.
4.
Use the
[HOLD]
and
[UNIT]
keys to input the value of the loaded weight.
5.
Press the
[TARE]
key to confirm.
5a.
The indicator will flash the input standard weight. When the weight becomes
steady the indicator will automatically go to next step. If this point can't be
calibrated correctly
CAL.Er
will be displayed. It is possible the weight load onto
scale is too small or the input data is incorrect. Repeat the previous steps.
6.
When
End.y
is shown and the y is flashing, it is waiting to exit calibration or go
on next calibration point. Use the
[UNIT]
key to select yes or no.
7.
Press the
[TARE]
key to confirm.
7a.
If yes is selected, the calibration will be saved and exit to the weigh mode.
7b.
If no is selected, it will go to next step.
8.
When 100% of the full scale weight is displayed after
CAL.P2
is shown, it will
be calibrated on standard weight for the second point.
9.
Use the
[HOLD]
and
[UNIT]
keys to input the value of the loaded weight (more
than 10% FS weight, and larger than the weight used on CAL.P1) onto scale.
10.
When
End.y
is shown and the y is flashing, it is waiting to exit calibration or go
on next calibration point. Use the
[UNIT]
key to select yes or no.
11.
Press the
[TARE]
key to confirm.
12.
When 100% of the full scale weight is displayed after
CAL.P3
is shown, it will
be calibrated on standard weight for the third point.
13.
Use the
[HOLD]
and
[UNIT]
keys to input the value of the loaded weight (more
than 10% FS weight, and larger than the weight used on CAL.P2) onto scale.
14.
When
End.y
is shown and the y is flashing, it is waiting to exit calibration or go
on next calibration point. Use the
[UNIT]
key to select yes or no.
15.
Press the
[TARE]
key to confirm.
16.
When calibration is complete
CA.End
will be displayed. The indicator will re-
start and go back to the weigh mode.
