Alarm Input And Output Connections - G-Lenz Security GDS-86208 User Manual

3 Use fitment materials that absorb the sound to reduce reflection of the sound.
、
4 Adjust the layout of the sound box and the tone arm.
、

2.6 Alarm input and output connections

A larm input
１ 、 １ 、 １ 、 １ 、
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 、 A larm 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 、 P TZ decoder 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 F ront equipment grounding note
、 、 、 、
Bad grounding can lead to the burnout of the chip.
5 A larm input type unlimited
、 、 、 、
The DVR alarm output port is constant opening type.
Page 9