INSTALLATION
1- Attach the SV sensor to the fence by using the brackets supplied
and connect plastic fiber to the LiteFENCE analyser
HOW TO SET LiteFENCE IN POWER METER MODE
Keep the DOWN button pressed while you switch-on the system: a dashed line appears on the display
HOW TO READ THE POWER METER DATA CORRECTLY
Plastic optical fiber is made of a polymeric material realized in such a way that it can lead the light inside and
guarantee the total reflection of the input signal, to transfer all the entering light to the exit.
However, physical and technical phenomenons occurr (ties, tension bolts, eye bolts) and cause power losses along
the fiber. That power loss is called attenuation.
Every meter of the installed plastic fiber introduces an attenuation resulting in: the more fiber you install, the
more attenuation you introduce, and the less optical power you will get at the end of the fiber.
Optical power is measured in dBm.
Example:
Maximum sensiti ity of Luceat systems is 30dB.
The distances mentioned take into account all common source of attenuation
(9dB e ery SV sensor and 0.1dB e ery meter of fiber)
Set LiteFENCE in the “power meter mode” so you'll
constantly monitor the attenuation of the fiber
during the installation of cable ties to identify
and avoid any increase of fiber attenuation
Each LiteFENCE tolerates a maximum attenuation of 3 dB,
equal to 2 SV sensors (equal to 9dB each)
and 1 m* of LiteWIRE plastic fiber (equal to 1 dB).
2 SV Sensors
1 LiteFENCE analyser
1 SV Sensor
1 LiteFENCE analyser
(*) reachable distance considering a correct installation with fiber attenuation <0,1 dB/m at 2 nm.
Sharp curves, cable ties or mechanical stress while placing the fiber can reduce the distance
N.B.: if you want to set the system in Power Meter mode when it is already switched-on, you need to RESET the system:
while you keep the OWN button pressed, press and release the RESET button, and then release
OWN button. After few seconds a dashed line will appear.
FIBER ENTRANCE
0 dBm = 0meters
FIBER EXIT
-10dBm = 100meters
Attenuation = optical power loss
Daisy-chain
Tasto DOWN