User Manual

104
User Manual
The power consumption of each TFLF is 10W.
An optional external adapter 220Vac to -48Vdc is available.
The TFLF also provide connections for the distribution of the -48Vdc to the
Remote Units by means of composite cable. Each supply port is protected
against overloads, short and surge with a self recovery fuse and surge
protection. The power switch will disconnect the remote unit power supply in
case of overcurrent.
The power consumption of each TFLF with 4 Remote Units is lower than 80W.
Warnings (to be read before the TFLF installation)
Dealing with optical output ports
• The TFLF Fast Master 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.
Handling optical connections
• When inserting an optical connector, take care to handle it so smoothly
that the optical fibre is not damaged. Optical fibres have to be single-mode
(SM) 9.5/125µm.
• Typically, Britecell Plus equipment is provided with SC-APC optical
connectors. Inserting any other connector will result in severe damages.
• Do not force or stretch the fibre pigtail with radius of curvature less than 5
cm.
• Remove adapter caps only just before making connections. Do not leave
SC-APC adapters open, as they attract dust. Unused SC-APC adapters
must always be covered with their caps.
• Do not touch the adapter tip. Clean it with a proper tissue before inserting
each connector into the sleeve. In case adapter tips need to be better
cleaned, use pure ethyl alcohol
TFLF cautions
• The TFLF modules must be handled with care in order to avoid damage to
electrostatic sensitive devices.
• Take care to meet expected requirements on RF ports. An external fixed
attenuator could be necessary when the power coming from the BTS
exceeds the required levels to avoid damages in circuitry or increase of
spurious emissions.
TFLF