User's Manual

3.5. OPTICAL-FIBER-CABLE CONNECTION - RULES
Main optical system parameters:
Fiber:
 Single mode fiber, type is E9/125 µm
 Attenuation: <0.36 dB / km @ 1310 nm / <0.26 dB / km @ 1550 nm
 Dispersion: <3.5 ps / nm km @ 1310 nm / <18.0 ps / nm km @ 1550 nm
 Fibre-cable connectors E2000APC8°
ION-M system:
 The specified bending radius ( < 4 cm) of the optical fibers must not be
exceeded.
 The pigtails for the connection between Master Unit and Remote Unit must
have a sufficient length. A protection for the feeding into units must be given.
 The system attenuation of the optical fibers, including the connectors, must
not exceed 10 dB.
System attenuation and attenuation of optical components must be determined. This
can be achieved by measuring attenuation and reflection 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.
Fiber-System Installation:
Fiber-cable connectors have to be of the same type (E2000APC8°) as the
connectors used for the unit. The fiber-optic cables are connected to the optical
transceiver.
Angled connectors are not compatible with straight optical connectors;
non-compatibility of connectors will result in permanent damage to
both connectors.
Before connecting the fiber cables, follow the procedure below to ensure optimized
performance. It is important for these procedures to be carried out with care:
 Remove fiber-optic protective caps.
 Do not bend the fiber-optic cable in a tight radius (< 4 cm) as this may cause
cable damage and interrupt transmission.
 Using high-grade alcohol and lint-free cotton cleaning swabs, clean the end of
the fiber-optic cable that will be inserted in the optical connectors on the donor
interface box. Use a fiber end-face inspection tool to scan both, the class fiber
and its surrounding area.