General
Optical switch is compatible with CEV / CFOx61/x71 series video
modems and is used to achieve the
fi
bre path redundancy. The optical
bandpass covers CWDM wavelenghts 1460...1620 nm and standard 1310
nm window. Fully bi-directional optical operation is allowed. When optical
switch is used in conjunction with a CEV / CFOx61/x71 video modems,
the optical switching can be automatic when it is controlled by the Link
Loss Alarm (LSA) available from these video modems. Alternatively the
optical switch can be con
fi
gured to operate in case of system power loss
or to have remotely controlled switching by means of an external I/O
control. The switching component itself is a durable 1 x 2 type non-
latching switch with a low insertion loss. The unit is 5HP wide.
Frame installation
The unit is to be pushed along the guide rails into the installation frame
(e.g. CSR216 or 316 series) and secured with the two locking screws. The
unit can be freely positioned in any slot in the frame. The empty positions
in the frame should be blanked off with cover plates.The supply voltage is
to be provided by a
CPS384
or
CPS390
power supply unit.
Stand-alone installation
The unit can be installed for stand-alone use by using a CMA series
module adapter. The unit is to be pushed along the guide rails into the
CMA module adapter and secured with the two locking screws. The
stand-alone unit should be mounted to a vertical surface. The 12V DC
supply voltage is supplied by the means of a separate mains adapter
with a regulated output, (e.g. CPS231).
Fibre connection
When installing the
fi
bre optic cable, do not exceed the minimum
bending radius when connecting cable to the system.
For correct optical operation ensure that:
> Protect opened connectors always with dustcaps
> Only 8° angle polished SC/APC connectors are allowed
> Clean all connectors before mating by using metyl or
isopropyl alcohol and dry connectors by compressed air
Optical switch for CEV and CFOx61/x71 series
video modems.
Optical switch introduction
DATA 1
EXTERNAL
CONTROL
OPTICAL
SWITCH
SMF
LSA
2
1
3
4
8
5
6
7
Optical switch,
front view.
1. Locking screw (2 pcs)
2. LSA connector
3. Loopthru connector
4. External control connector
5. Port A
6. Port B
7. Common port
8. Handle (with unit information)
LSA and DATA1 port connectors are
of type RJ-45 female.
All optical port connectors are of type
SC/APC female (8°).
See further information on
dedicated sections.
SC/APC 8° optical connection.
Optical switch
user manual rev001
1
