9
KEYPAD FUNCTIONS, Cont.
TARE KEY, Cont.
annunciator will blink. The numeric keys may be used to enter a new tare value and the ENTER key
pressed to store the new value. Once the new tare value is entered, the CN20 will automatically enter
the Net Weight mode indicated by turning on the NET annunciator.
NET KEY
Pressing this key will cause the CN20
to enter the Net Weight mode where
the weight displayed is the gross
weight less the stored tare weight. The
NET annunciator is turned on to show
that the displayed weight is the net
weight. Note that the CN20 will only
enter the Net Weight mode if a valid
tare weight is currently stored.
TEST KEY
This key is used to conduct a test of all
display and memory elements. The
test consists of four (4) cycles each
lasting two (2) seconds:
1. All vertical display segments on
(no annunciators)
2. All horizontal display segments
on (no annunciators)
3. All annunciators and decimal
points on
4. All display elements off
ENTER KEY
This key serves two purposes. First,
when reviewing setup parameters,
pressing the ENTER key will cause the
current setting of the parameter to be
displayed. Second, the ENTER key is
used to signal the completion of the entry of data and causes the CN20 to process the
data entered.
0 THROUGH 9 KEYS
These keys are used to enter numeric data during the setup and calibration as well as
during normal operation of the instrument.
ANNUNCIATORS
Note that annunciators are turned on to indicate that the display is in the mode corresponding to the
annunciator label or that the status indicated by the label is active. Some annunciators are flashed on
and off to signal that the CN20 is waiting for an input from the keypad for use by the feature indicated
by the annunciator.
ZERO
The ZERO annunciator is turned on to indicate that the weight is within +/- 1/4 division of the center of
zero.
GROSS (optional keypad only)
The GROSS annunciator is turned on to indicate that the displayed weight is the gross weight which
is the total of all weight placed on the scale platform since the display was last reset to zero.
TARE (optional keypad only)
The TARE annunciator is flashed on and off to show that the CN20 is in the tare weight input mode
and that the new tare weight value should be entered on the numeric keys.
NET (optional keypad only)
The NET annunciator is turned on to show that the displayed weight is the net weight which is the
gross weight less the tare weight.
NET
N
ZERO
ON
OFF
MODEL CN20
A Division of Cardinal Scale Manufacturing Co.
DETECTO
GROSS TARE NET
ZERO
lb/kg
HOLD
REL.
GROSS
G
TARE
T
NET
N
TEST
ENTER
0123
456
789
Figure No. 8
TEST
ENTER
9
0
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