User's Manual

4. Commissioning

7.Manual MF0200A0A ION-U_H_17P2_uc_19-July-13.docx User’s

Manual for ION

Page 31

4.2.10. Optical-Fiber Cable Connection

Rules for Optical-Fiber Connection

Optical signals are transmitted by use of optical fibers. When connecting these fibers

observe the following instructions.



Note: Care should be taken when connecting and disconnecting fiber-

optic cables. Scratches and dust significantly affect system

performance and may permanently damage the connector. Always

use protective caps on fiber-optic connectors not in use.

In general, optical fibres do not need special protective measures. However,

protection against environmental influences e.g. rodents and humidity must be

considered.

The optical fibre is a single mode fiber. Type is E9/125 µm with the following

minimum requirements:

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

The specified bending radius of the optical fibers must not be exceeded. The pigtails

for the connection between master unit and remote unit must have a sufficient length.

The fibers must be protected where they enter the units. 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-cable connectors have to be of the same type (Radiall Opus LC-APC) 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.