Quick Operation Guide of LTV-DVR
6
Connecting to Alarm Input / Output Device
The alarm input is an open/closed relay. If the input is not an open/closed relay, follow the connection diagram
below:
To connect to an AC/DC load, use the following diagram:
For DC load, JP4 can be used within the limit of 12V/1A safely. If the interface is connected to an AC load, JP4
should be left open. Use an external relay for safety (as shown in the figure above).
There are 4 jumpers (JP4, JP5, JP6, and JP7) on the motherboard, each corresponding with one alarm output. By
default, jumpers are connected. To connect an AC load, jumpers should be removed.
An external relay is needed to prevent electric shock when connecting to an AC load.
Alarm Connection
To connect alarm devices to the DVR:
1.
Disconnect
pluggable block
from the ALARM IN /ALARM OUT terminal block.
2.
Press and hold the orange part of the
pluggable block
; insert signal cables into slots and release the orange part.
Ensure signal cables are in tight.
3.
Connect
pluggable block
back into terminal block.
RS-485 Connections
To connect RS-485 devices (e.g., pan/tilt unit) to the DVR:
Press and hold the orange part of the
pluggable block
; insert signal cables into slots and release the orange part.
Ensure signal cables are in tight.
Make sure the pan/tilt receiver unit is connected to the D+ and D- of the RS-485 terminal of DVR.