39
CTRL 12V
Control power output. The power output is off when the alarm is
canceled.
+12V
It is rated power output.
Earth cable.
T+, T-, R+, R-
4-pin full-duplex RS485 port. T+
,
T- are the output cable and R+
,
R- are input cable.
485 A/B
485 communication port. They are used to control devices such as
PTZ. Please parallel connect 120T
Ω
between A/B cables if there are
too many PTZ receiver/drivers.
3.8.2 Alarm Input Port
Please refer to the following sheet for more information.
Normal open or Normal close type.
Please parallel connect COM end and GND end of the alarm detector (Provide external
power to the alarm detector).
Please parallel connect the Ground of the DVR and the ground of the alarm detector.
Please connect the NC port of the alarm sensor to the DVR alarm input(ALARM)
Use the same ground with that of DVR if you use external power to the alarm device.
Figure 3-5
3.8.3 Alarm Output Port
Provide power to peripheral alarm device.
To avoid overloading, please read the following relay parameters sheet carefully.
RS485 A/B cable is for the A/B cable of the PTZ receiver/driver.
Relay Specification
Material of the
touch
Silver
Rating
(
Resistance
Load
)
Rated switch capacity
30VDC 2A, 125VAC 1A
Maximum switch power
125VA 160W
Maximum switch voltage
250VAC, 220VDC
Maximum switch currency
1A
Insulation
Between touches with same
polarity
1000VAC 1minute
Содержание DLA3800
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Страница 180: ...170 Figure 7 62 Figure 7 63 Figure 7 64 Figure 7 65 Please refer to the following sheet for detailed information...
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