Operation Manual

Relay
Examples of alarm input connections
The alarm input is the switch quantity input. If the alarm input signal is not switch quantity signal but voltage
signal, refer to the following connection:
Alarm
Input
Devices
（Power
Output）
ALM(+)
Relay
NVR
In
Alarm
Switch
Signal
G
ALM(-)
Examples of alarm output connections
When the alarm output connect with DC and AC load, please refer to the connection.
NVR
Switch
Signal
Output
Loading
G
OUT
NVR
Switch
Signal
DC
Output
Loading
G
AC
OUT
See details 7.2.5.
The Connection of the P/T/Z
The A, B interface of the PTZ decoder connect with A and B interfaces of the DVR’s RS-485. 120Ω resistors
should be paralleled in the remote A, B lines to reduce the distortion of the signal if a larger number of PTZs are
connected.
See details 7.2.4.
Keyboard
The A, B interface of the Keyboard connect with A and B interfaces of the DVR’s RS-485 .[MAIN
MENU]→[CONFIGURATION]→[P/T/Z]，Protocol choose KEYBORAD. See below.