8
and
“
°C/°F
”
are disabled.
To exit the MAX/MIN mode, one may press and hold
for two seconds.
4.9 Auto Power Off:
By default, when the meter is powered on, it is under
auto power off mode. The meter will power itself off
after30 minutes if no key operation and RS232
communication. Key combination at power on or
RS232 communication can disable auto power off.
One may press and hold “
HOLD
” button and then
power on the meter and there will be two successive
beeps to indicate that auto power off is disabled.
4.10 Low Battery Condition
When the battery voltage is under proper operation
requirement, the symbol will show on the LCD
and the battery need to be replaced with new one.
4.11 Digital output:
The Digital Output is a 9600bps N 81 serial interface.
The RX is a 5V normal high input port.
The TX is a 5V normal high output port.
The command of Digital Output is list below.
TX
RX
GND
