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User's guide
3.3.3. RS232
Equipment
2
RXD
3
TXD
4
VCC
5
GND
3.3.4. Mercury level bubble
BR30 indicator has a function with connect with a mercury level
bubble. It could be !xed on a platform. When the platform is not level
and exceeds a certain angle, the indicator will sound beeper and show
. Then it could not be weighing.
4. Key descriptions
key
Turn on or off the power.
Set the zero point for all subsequent weighing. The display shows
zero. A secondary function of "Enter" Key when setting parameters or
other functions.
Tares the scale. Stores the current weight in memory as a tare value,
subtracts the tare value from the weight and shows the results.
A secondary function incrementing the active digit when setting a
value for parameters or other functions.
36
Indicator
Input
Receiving data
Output
Transmission data
Signal +5V
Signal ground
descriptions
Model BR30
PC
2
3
DON'T CONNECT
5
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