Dahua DH-IPC-HF8242FP-FR Quick Start Manual page 9

TX
RX
B
A
NA
I1
I2
N1
C1
N2
C2
P
G (adjacent to P)
RESET
ABF
AF
AUDIO OUT
AUDIO IN1
AUDIO IN2
RS232 port
RS484 port
IR light port
Alarm input port 1
Alarm input port 2
Alarm output port
Power foldback
output port
RESET button
Auto back focus
adjustment
Auto focus function
Audio output port
Audio input port
Sending end of RS232 serial port
Receiving end of RS232 serial port
RS485_B port, control external PTZ etc.
RS485_A port, control external PTZ etc.
External IR light signal control port.
It is to receive the on-off signal from the external
alarm source.
It is to receive the on-off signal from the external
alarm source.

Alarm output port, output alarm signal to
alarm device.

N1/N2: Normally open alarm output end.

C1/C2: Alarm output public end.
Note:
N1 can only be used with C1 while N2 can only
be used with C2 when connecting alarm device.
It outputs DC 12V power; P connects to positive
pole while G connects to negative pole.
Restore device factory default setup.
When system is running normally, press the
RESET button for at least 5 seconds, system can
restore factory default setup.
Auto back focus adjustment, by adjusting Sensor
board position to achieve precise back focus
adjustment.
The device lens mount is M43 and it supports the
function when installing motorized lens.
It can realize accurate auto focus via one button.
3.5mm JACK port, output audio signal to the
passive device such as earphone and etc.
3.5mm JACK, input audio signal from devices
such as pick-up.
Note:
3