Andrew ION-B Series, User Manual

Page: 89 / 181

89 MN024-010
TFAM
Case F
Warnings (to be read before Remote Units are installed)
Dealing with optical output ports
The Case-F 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
• Case-F 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 gure.
• When positioning the Case-F Remote Unit, pay attention that the placing of related
antennas should be decided in order to minimize the Minimum Coupling Loss (MLC), so as
to avoid blocking.
• The Case-F Remote Unit is intended to be fi xed on walls or other fl at vertical surfaces.
Handling optical connections
• When inserting an optical connector, take care to handle it so smoothly that the optical
fi bre is not damaged. Optical fi bres are to be single-mode (SM) 9.5/125µm.
• Typically, ION-B equipment is provided with SC-APC optical connectors (other connectors
may be provided on request). Inserting any other connectors will result in severe
damages.
• Do not force or stretch the fi bre pigtail with radius of curvature less than 5cm. See
rightward fi gure for optimal fi bre cabling.
• Remove the adapter caps only just before making connections. Do not leave any SC-
APC adapter open, as they attract dirt. Unused optical connectors must always be
covered with their caps.
85/264 Vac:
Connector
PE:
ground
1:
N
2:
L
-36/-72 Vdc:
Connector
4:
0V
6:
-48V
2 2
1 1 6 6
4 4
Figure 3.6.3: Description of the 85/264 Vac inlet (a)
and of the -36/-72 Vdc inlet (b) on a Case-F Remote Unit