Page 12 of 51.
Title NetVu Uniplex Desktop NVR Advanced Installation Manual
NetVu Ltd.
No 1 Thellow Heath Park, Northwich Road, Northwich, Cheshire. CW9 6JB
Connecting Alarm Inputs
Alarm inputs from third-party sensors, such as Passive Infra-Red Detectors, door contacts, beams
etc. may be connected using the 25-pin D-connector on the rear panel of the NVR.
The Uniplex Desktop NVR supports 19 normally open/closed tamper proof alarm inputs. The
al
arms support tamper proof detection using 1kΩ in line and 5kΩ end of line resistance. The unit
detects short circuit, open circuit and contact closure. This function is part of the advanced alarms
supported on NetVu Connected products and includes features required for Central Monitoring. It
is compatible with the British Standard BS8418.
The connections for the first 17 alarm inputs of the NVR are on the 25-Pin Din Connector on the
rear panel of the NVR.
Pin
Alarm Input Connection
1
–
17
1 - 17
21-25
Earth Common
Additional alarm inputs are available on the terminal connector on the rear panel of the NVR.
End of Line (EOL) Circuitry
The following describes the EOL tamper alarms circuitry needed when EOL has been configured.
There should be two resistive values within the tamper alarm circuitry. These must be located
inside the alarm device (furthest point from the unit).
The alarm state could be Normally Open or Normally closed. However, the tamper states are the
same for both settings.
