****note:T
note:T
note:T
note:T series
series
series
series have
have
have
have no
no
no
no alarm
alarm
alarm
alarm input/output
input/output
input/output
input/output functions.
functions.
functions.
functions.
１
....Alarm
Alarm
Alarm
Alarm input
input
input
input
A.
Alarm input is grounding alarm input.
B.
Alarm input demand is the grounding voltage signal.
C.
When the alarm is connected with two DVRs or connected with DVR and other equipments, it
should be isolated by relay.
2.
2.
2.
2.Alarm
Alarm
Alarm
Alarm output
output
output
output
Alarm output can not be connected with high-power load(no more than 1A).When forming the output
loop it must prevent the big current from relay damage. Use the contact isolator when there is a
high-power load
3.
3.
3.
3.PTZ
PTZ
PTZ
PTZ decoder
decoder
decoder
decoder connections
connections
connections
connections
A.
The grounding of the PTZ decoder and DVR must be shared otherwise the common-mode
voltage will lead to the PTZ control failure. The shielded twisted pair is recommended.
B.
Avoid the entrance of high voltage. Make the layout reasonably. Take precaution from the
thunder.
C.
In the outlying end connect 120Ω resistance paralleled to reduce the inflection and insure the
signal quality.
D.
The 485 AB lines of DVR can not connected with other 485 output equipments paralleled.
E.
The voltage between the AB lines of the decoder must be less than 5V.
4.
4.
4.
4.Front
Front
Front
Front equipment
equipment
equipment
equipment grounding
grounding
grounding
grounding note
note
note
note
Bad grounding can lead to the burnout of the chip.
5
5
5
5....Alarm
Alarm
Alarm
Alarm input
input
input
input type
type
type
type unlimited
unlimited
unlimited
unlimited
The DVR alarm output port is constant opening type.
eight
eight
eight
eight external
external
external
external alarm
alarm
alarm
alarm
interface
interface
interface
interface
