Operation; General Function; Zero Adjustment; Zero Tracking - A&D AD-4408A Instruction Manual

6. Operation

6.1. General Function

6.1.1. Zero adjustment

Zero adjustment is a function to set the gross weight to zero. It is performed by
pressing the ZERO key.
The zero adjustment range is set in
expressed in percent of the weighing capacity with the calibration zero point as the
center.
Zero adjustment is disabled, even within the zero adjustment range, when the A/D
converter overflow occurs.
A ZERO error is output if zero adjustment is not performed.
The zero value is stored in the non-volatile memory and is maintained, even if the
power is disconnected.
Clearing the zero value is performed using the F key assigned to clear the zero value.
Alternately, apply power to the indicator while holding the TARE key, or with the
indicator in the OFF mode, press and hold the TARE key and press the ON/OFF
key, to clear the zero value.
Functions related to zero adjustment
Calf05
: Changes the zero adjustment range. (0 to 100%)
Calf10
: Enables or disables zero adjustment when unstable.
Calf16
: Enables or disables power-ON zero (function to zero upon power-ON).

6.1.2. Zero tracking

Zero tracking is a function to track the weight drift around the zero point to maintain
zero.
The zero tracking time is set in
band is set in
specified ranges, zero adjustment is performed automatically.
A ZERO error is not output even if zero tracking is not performed.
Functions related to zero tracking
Calf06
: Changes the zero tracking time. (0.0 to 5.0 seconds)
Calf07
: Changes the zero tracking band. (0.0 to 9.9 d)
Calf06
Calf07
(zero tracking band). When the weight drift is within the
Calf05
(zero adjustment range) and is
(zero tracking time) and the zero tracking
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AD-4408A