User's Manual

4. Commissioning
Page 48 MF0200A5C_ION-U_L_7_80-85_17EP_19P.docx Manual for ION
®
-U
4.3. Low Power RU Optical Installation
4.3.1. Optical-fiber-cable connection - rules
Main optical system parameters:
Fiber:
 Single mode fiber, type is 9.5/125 µm
 Fiber-cable connectors LC/APC
ION-U system:
Note: The pigtails for the connection between Master Unit and Remote Unit
must have a sufficient length. Protection for the optical fibers must be
provided where the fibers feed into the units.
Note: The system attenuation of the optical fibers, including the connectors,
must not exceed 5 dB.
System attenuation and attenuation of optical components must be determined. This
can be achieved by measuring attenuation with an appropriate measuring instrument.
For pigtails, a total value of < 0.4 dB (measured to a reference plug) can be assumed
due to the dead zone of the reflectometer. These measurements must be made with
a sufficient length of optical fiber, at the input and output of the device which has to
be measured.