7821 User Instructions 21
5.5 Calibration Mode
2. 2.Press the UNITS key to start calibration …
LBS or 1000G (kg) is displayed.
3. Press the ZERO key to toggle between the choices of unit of measure (lb or
kg). When the choice you want is displayed, press the UNITS key to accept …
The choice is accepted and U ON is displayed.
4. Press the ZERO key to toggle between the choices U ON or U OFF. Once your
choice is displayed, press the UNITS key. See above for the definitions of
calibrating the scale using U ON or U OFF.
5. If LB was chosen for calibration, the scale will display SCALE. Press the
ZERO key to toggle between SCALE and CLASS. Press the TEST key. If kg
was chosen, this step is skipped. The scale then prompts one of the capacities
from Table 5.3.
6. Press the ZERO key to toggle between the capacity choices. When the choice
you want is displayed, press the UNITS key …
The scale prompts LOAD 0.
7. Clear all weight from the scale platter and press the UNITS key …
After a brief pause, LOAD xxx is displayed
(xxx = Span Weight).
Alternate calibration points can be chosen using the TEST key to toggle
between choices (see Table 5.1).
8. Place chosen span calibration weight on the scale and press the UNITS key …
After a brief pause, DONE is displayed. The scale then prompts DIAG.
9. Remove all calibration weights from scale.
10. Return Switch 1 to the closed position …
The scale returns to normal weighing mode.
The scale is now tested, configured and calibrated. It is ready for use in your
application.
WARNING! Entering this mode can erase the calibration already saved. Special
calibration weights are needed to use calibration mode.
If no span weight is applied, calibration will be aborted. CAL ERROR ABORT will be
displayed.
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