21
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.Fortoolongsignalwires,120ΩshouldbeparallelconnectedbetweenA,Blinesonthe
far end to reduce reflection and guarantee the signal quality.
d.
“485A,B”ofDVRcannotparallelconnectwith“485port”ofotherdevice.
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.
3.7.1 Alarm Input and Output Details
Important
Please refer to the specifications for the alarm input and output channel amount.
Do not merely count the alarm input and out channel amount according to the ports
on the rear panel.
Figure
3-1
1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16 Alarm input port 1~16. The alarm becomes active
in low voltage.
NO1 C1,
NO2 C2,
NO3 C3,
NO4 C4,
NO5 C5 NC5
There are 5 groups of alarm output ports.
NO: Normal open alarm output port.
C: Alarm output public end.
NC: Normal close alarm output port.
CTRL 12V
Control power output. For external alarm, you need
to close the device power to cancel the alarm.
Voltage current: 500mA.
12V
Rated current.
Voltage current: 500mA.
Summary of Contents for CJ-HDR216
Page 1: ...HD Analog Recorder User s Manual Model No CJ HDR216 CJ HDR416 Version 1 0 3 ...
Page 93: ...85 Figure 4 72 Figure 4 73 ...
Page 94: ...86 Figure 4 74 Figure 4 75 ...
Page 99: ...91 Figure 4 79 Figure 4 80 ...
Page 102: ...94 Figure 4 84 Figure 4 85 ...
Page 108: ...100 Figure 4 93 Figure 4 94 ...
Page 110: ...102 Figure 4 96 Figure 4 97 ...
Page 116: ...108 Figure 4 104 Figure 4 105 ...
Page 120: ...112 Figure 4 109 Figure 4 110 ...
Page 130: ...122 Figure 4 120 Figure 4 121 ...
Page 164: ...156 Figure 5 46 Figure 5 47 ...
Page 168: ...160 Figure 5 51 Figure 5 52 Please refer to the following sheet for detailed information ...
Page 172: ...164 Blue color stands for MD alarm record snapshot Figure 5 56 Figure 5 57 ...
