48
ION-B User Manual
TFAM
Case B
Warnings (to be read before Remote Units are installed)
Dealing with optical output ports
The TFAx Remote Unit contains semiconductor lasers. Invisible laser beams may be emitted
from the optical output ports. Do not look towards the optical ports while equipment is
switched on.
Choosing a proper installation site for the Remote Units
• TFAx Remote Units have to be installed as close as possible to the radiating antennas,
in order to minimize coaxial cable length, thus reducing downlink power loss and uplink
noise fi gures.
• When positioning the TFAx Remote Unit, be sure to place related antennas in such a way
as to minimize the Minimum Coupling Loss (MLC), in order to avoid blocking.
• The TFAx Remote Unit is intended to be fi xed on walls, false ceilings or other fl at vertical
surfaces (TKA installation kits are available, they provide a protective cover for the TFAx
Remote Unit, while making installation easier and faster).
Handling optical connections
• When inserting an optical connector, take care to handle it so that the optical fi bre is not
damaged. Optical fi bres are to be in single-mode (SM) 9.5/125µm.
• Typically, ION-B equipment is provided with SC-APC optical connectors (other connectors
are provided upon request). Inserting any other connectors will result in severe damage.
• Do not force or stretch the fi bre pigtail with curvature radius of less than 5cm. See fi gure
on right for optimal fi bre cabling.
• Remove the adapter caps only just before making connections. Do not leave any SC-
APC adapters open, as they attract dirt. Unused optical connectors must always be
covered with their caps.
Figure 3.3.5 - Handling optical
connections with ION-B Remote Units.
WRONG
CORRECT
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