advidia A-200, Installation Manual, Page: 17 / 46

A-200 Installation Manual
11
1.3.6 Terminal Resistor Settings
Open the bubble of the dome and you will find the 120
Ω
terminal resistor on the side of the dome
as shown below.
Figure 1-11 Termination Resistor

In half-duplex mode, you can switch the position 2 to ON to enable the resistor;

In full-duplex mode, switch position 2 to ON to enable the resistor of the receiving end, and
switch position 1 to ON to enable the resistor of the sending end.
Note: The factory default setting for the speed dome is half-duplex.
1.4 Alarm In/Out Connections
The network speed dome can be connected with alarm inputs (0~5VDC) and alarm outputs. Refer to
the following diagrams for alarm output:
JQC-3FG
Relay
30VDC
GND OUT
L N
～220V AC
Relay Output
Dome
(10 A 250VAC)
Diagram (left)
Diagram(right)
1A
OUT(n)
OUT(n)
+
- DC
DC Load
Relay Output
Dome
OUT(n)
OUT(n)
Figure 1-12 Alarm Out Connections
The alarm provides the relay output (no voltage), and the external power supply is required when it
connects to the alarm device.

For DC power supply (left diagram), the input voltage must be no more than 30VDC, 1A.

For AC power supply, the external relay must be used (right diagram) to prevent damages to the
speed dome and avoid risk of electric shock.
ON
2
1
ON
2
1