MODULE
LINK
VIDEO 1
VIDEO 2
VIDEO 3
VIDEO 4
AUDIO
MGMT
DA
T
A
DA
T
A
/ CCL
STATUS
ETHERNET
BRIDGE
OPTICAL TRANSMITTER
DATA 1
Loopthru
Video modem’s
data 1 & CC,
(see video modem
user manual for
pin configuration)
Connection cable
(direct connected
e.g. CIC702)
Port A
Port B
Fibre
patch cable
(e.g. OPA112)
EXTERNAL
CONTROL
OPTICAL
SWITCH
SMF
LSA
Settings
Wiring example
When the connection cable is connected between video modem and
optical switch, the video modem’s DATA 1 and contact closure connections
are available via the optical switch’s DATA 1 (loopthru) connector.
Wiring example
with four channel video transmitter.
DIP switch settings
There are several ways to control optical switch. The desired control
mode can be selected by the means of DIP switches (see settings
below). The default factory setting is
LSA controlled
.
1
ON
2 3 4 5 6
DIP swithes
are located on the
bottom of unit.
Note!
When the optical switch is
con
fi
gured to LSA mode, there is an
alternative possibility to control the
switch remotely. At the video modem
con
fi
guration session (CLI) the LSA
function can be disabled and the
contact closure channel is returned
back to normal CC usage. This
enables a possibility to control the
CC channel from the remote end of
the
fi
bre link and therefore to control
the optical switch operation as well.
DIP
switch
LSA
controlled
EXT
mode A
EXT
mode B
System
power
1
OFF
ON
OFF
OFF
2
ON
OFF
OFF
OFF
3
OFF
OFF
OFF
OFF
4
OFF
OFF
OFF
OFF
5
OFF
OFF
ON
ON
6
OFF
OFF
ON
OFF
Switch
position
LSA active
COM -> port B
EXT closed
COM -> port B
EXT closed
COM -> port A
Power ON
COM -> port B
LSA inactive
COM -> port A
EXT open
COM -> port A
EXT open
COM -> port B
Power OFF
COM -> port A
Optical switch
user manual rev001
3
