A&D HR-250AZ Instruction Manual page 44

Zero tracking ( trc )
This function tracks zero point drift caused by changes in the environment and stabilizes the zero
point. When the weight data is only a few digits, turn the function off for accurate weighing.
Note
Digit indicates a unit of minimum weighing value.
trc 0
trc 1
trc 2
trc 3
Display refresh rate ( 5pd )
Period to refresh the display. This parameter influences "Stream mode" along with "Baud rate" and
"Data output pause"
Note
This item is selected automatically when the response rate is changed.
Decimal point ( pnt )
The decimal point format can be selected.
Auto display-ON ( p-on )
When the AC adapter is connected, the display is automatically turned on in the weighing mode,
without the ON:OFF key operation. Used when the balance is built into an automated system. One
hour warm up is necessary for accurate weighing.
Auto display-OFF ( poff )
This function automatically turns off the balance display, if the weighing value is 0.5 g or less and the
balance is in the no key operation or no command has been received for approx. 10 minutes.
(The balance has the same power requirement in the weighing state as in the off state (standby mode).)
The tracking function is not used. Used for weighing a very light sample.
The tracking function is used. Normal zero tracking.
The tracking function is used. Strong zero tracking.
The tracking function is used. Very strong zero tracking.
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