Delta Embedded DVR User Manual download pdf (Page 40)

The alarm output port should not be connected to high power load directly (It shall be less than

1A) to avoid high current which may result in relay damage. Please use the co contactor to

realize the connection between the alarm output port and the load.

3. How to connect PTZ decoder

a. Ensure the decoder has the same grounding with DVR, otherwise you may not control the PTZ.

Shielded twisted wire is recommended and the shielded layer is used to connect to the grounding.

b. Avoid high voltage. Ensure proper wiring and some thunder protection measures.

c. For too long signal wires, 120Ω should be parallel connected between A, B lines on the far end

to reduce reflection and guarantee the signal quality.

d. “485 A, B” of DVR cannot parallel connect with “485 port” of other device.

e. The voltage between of A,B lines of the decoder should be less than 5v.

4. Please make sure the front-end device has soundly earthed.

Improper grounding may result in chip damage.

3.8.1 Alarm Input and Output Details

You can refer to the following sheet and X288H288H288HFigure 3-6X for alarm input and output information.

Figure 3-6

In the first line, from

the left to the right,:

1，2，3，4，5，

6，7，8，9，10，

11，12，13，14，

15，16

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

In the second line,

from the left to the

right:

NO1 C1，

NO2 C2，

NO3 C3，

NO4 C4,

NO5 C5 NC5

The first four are four groups of normal open activation output

(on/off button)

NO5 C5 NC5 is a group of NO/NC activation output (on/off button)

CTRL 12V Control power output. You need to close the device power to cancel

the alarm.

+12V It is external power input. Need the peripheral equipment to provide

+12V power (below 1A).

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.T

3.8.2 Alarm Input Port

Please refer to the following sheet for more information.

z 4/8/16-ch grounding alarm inputs. (Normal open or Normal close type)

1 2 ... 35 36 37 38 39 40 41 42 43 44 45 ... 161 162

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Delta Embedded DVR User Manual Page 40

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