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AlaRM INPUT ANd Output wiring
Up to 48 alarm inputs and up to 24 alarm outputs can be connected to the NVR. Terminations for these devices are located on two modules:
• Controller module: Terminations provided for alarm inputs 1 .. 16 and alarm outputs 1 .. 8.
• Extension module (slot 4 module): Terminations provided for alarm inputs 17 .. 48 and alarm outputs 9 .. 24.
Alarm Input circuits
Alarm input terminals sense a open or closed path to ground (G terminal). The alarm input sensor us usually a simple switch that opens
or closes depending on some condition. Firmware in the NVR can be congured to declare an alarm input active when the sensor is either
opened (normally closed sensor) or closed (normally open sensor).
Alarm Output circuits
Alarm outputs are terminals in the NVR that drive some kind of reporting device, such as a sonic alarm or light. These reporting devices can
be either of two kinds: 1) a DC loaded device or 2) an AC loaded device.
DC load alarm output circuits
DC loads must operate within the limitation of 12 V / 1 A. To connect to a DC alarm output, use the following diagram. This type of
reporting device uses an external DC power source to allow current to ow through the reporting device (load).
NVR
DC
Gnd
DC load
+
–
OUT
AC load alarm output circuits
To connect an AC load to an alarm output, a jumper, associated with the output on the module must be removed. On the Controller
module, these jumpers are labeled JP1 through JP 4, and JP10 through JP13 for alarm outputs 1 through 8, respectively. On the
Extension nodule, these jumpers are labeled CN1 through CN16 for alarm outputs 9 through 24, respectively. Use an external relay to
close a circuit, allowing current from an AC source to ow through the load.
General guidelines for installing your system
What you need
Although each security system installation is dierent, most require the following items not included with your system components:
• VGA or HDMI compatible monitor(s)
• HDDs compatible with the NVR (up to 24, each with up to 8TB)
• A display device and interface cable to connect to the NVR. The NVR will connect directly to a VGA video monitor or an HDMI monitor. It
can be disconnected when the NVR is networked for access across a LAN or Internet.
• Uninterruptible power supply (UPS). This device is used to ensure system stability during voltage surges, sags, and outages. If a UPS is
not available, a power strip with strong surge protection is highly recommended.
Equipment Placement
Your monitoring and recording equipment is the core device for constant surveillance and the reliable capture of video evidence. Observint
Technologies strongly suggest that it be installed in a secure location with access limited to authorized personnel. The NVR can be installed
on a shelf in a rack.
NVRs and monitors generate heat and should be placed in a clean and well ventilated area. A high temperature environment will reduce the
life span and reliability of the equipment. Additionally, the NVR is not weatherproof, so avoid exposure to liquids and excessive dust. Also, do
not place objects along the sides or behind the NVR that will block cooling airow through the chassis or prevent access to the back panel
cabling.
Uninterruptible power supplies
It is strongly suggested that power to the system be routed through an uninterruptible power supply (UPS). These devices will keep your
security system running through most power outages, in addition to providing excellent surge and sag protection. The UPS should support
the NVR and all cameras to ensure normal operation during abnormal power conditions.
IP cameras monitored by the NVR
Your NVR connects to cameras through Ethernet networks. These cameras must be compatible with the NVR.
Ethernet network considerations
The NVR contains eight network interfaces: LAN1 .. LAN4 on the controller module, and four ber channel terminations on the slot 4 module.
• Net Fault-tolerance Mode: LAN1 through LAN4 are connected to the same network and use the same IP address but only one
interface (the one congured as Main) is active at any one time. If the main network interface failure, the device will automatically
enable the other (standby) network interface to ensure the normal operation of the system.
• Multi-address Mode: The parameters of LAN1 through LAN4 can be congured independently and connected to dierent networks.
You can select LAN1 through LAN4 in the NIC type eld for parameter settings. This conguration can be used in dierent ways. For
instance, you can use one network to stream all camera video / data to and from the cameras and the other network to monitor the
NVR, or access cameras on two networks and stream camera video / data from both to improve network bandwidth.
The NVR must be positioned within 100 meters (330 ft) to an Ethernet network switch or hub.