Connecting Alarm Input/Output - Dahua Technology IPC-PDW5849-A180-E2-ASTE Quick Start Manual

No.
4
5
Port Name
ALARM_IN
ALARM_OUT
ALARM_GND

1.3 Connecting Alarm Input/Output

The camera can connect to external alarm input/output devices through the digital input/output
port.
Alarm input/output is available on select models.
Procedure
Step 1 Connect the alarm input device to the alarm input end of the I/O port. See Figure 1-3.
The device collects different statuses of the alarm input port while the input signal is idling
and being grounded.
● Device collects logic "1" when the input signal is connected to +3 V to +5 V or idling.
● Device collects logic "0" when the input signal is grounded.
Step 2 Connect the alarm output device to the alarm output end of the I/O port. The alarm output
is an open-drain output, which works in the following modes.
● Mode A: Level application. The alarm outputs high and low level signals, and the alarm
outlet is OD, which requires external pull-up resistance (10 K Ohm typical) to work. The
Port name Description
Connects to sound pickups to receive audio signals.
Audio input
Audio input is available on select models.
Connects to speaker to output audio signals.
Audio output
Audio output is available on select models.
Table 1-2 Description of Alarm I/O port
Description
Receives the switch signals of external alarm source.
Outputs alarm signals to alarm devices.
Ground connection.
Figure 1-3 Alarm input
2
Quick Start Guide