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DVR systems DVRxx04HF-A Series User Manual

Page 48

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48

485 A/B

485 communication port. They are used to control devices such as
PTZ. Please parallel connect 120TΩ between A/B cables if there are
too many PTZ decoders.

The 16-channel interface is shown as in Figure 3-7.

Figure 3-7

Please refer to the following sheet and Figure 3-7 for detailed information.

In the second line,
from the left to the
right,: 1,2,3,4,
5,6,7,8.and the
first line from the left
to the right : 9,10,
11,12,13,14,
15,16

ALARM 1 to ALARM 16. The alarm becomes active in low voltage.

In the first line, from
the left to the right:
3-NO C,and the
second line from the
left to the right 1-
NO C,2-NO C.

There are three groups of normal open activation output (on/off
button)

Earth cable.

485 A/B

485 communication port. They are used to control devices such as
PTZ. Please parallel connect 120TΩ between A/B cables if there are
too many PTZ decoders.


3.8.1.2 1.5U Series

The 1.5U series product interface is shown as in Figure 3-8.

Figure 3-8

You can refer to the following sheet and Figure 3-8 for alarm input and output information.

In the first line, from
the left to the right,:

ALARM 1 to ALARM 16. The alarm becomes active in low voltage.

AB cable
connection

AB cable
connection