Telecast Adder 162 User Manual page 11

Never look directly into the end of the optical fiber until it has been positively
determined to be safe. Eye damage could result.
Each 162/322 system has multiple optical connections. As a minimum, a transmit output must
be connected via a suitable fiber to a receive input.
Fiber transmissions can be 100% redundant. A secondary fiber output operates with
independent drivers and is always active. If the active fiber link fails, an alarm is sounded and
the secondary link takes over.
Two additional, fiber outputs are available for local splits. This is useful when the same outputs
are received at multiple locations.
The Adder 162/322 is compatible with industry standard ST type connectors. It may be used
with installed backbone cables or with dedicated cables. Consult Telecast for information
regarding compatible fiber types.
Assembled cables and connectors are available from Telecast Fiber Systems, Inc. For custom
cable fabrication, use type ST connectors such as Telecast part number CONN-ST-M.
Always follow the connector manufacturer's directions when fastening a connector to the cable.
A Quick-crimp kit, part number CKIT-3M, is available from Telecast.
Always cover all unused fiber connectors.
Fiber ports Tx1, Tx2, Tx3 and Tx4 shown in Figure 6 are fully redundant. All transmit ports are
always active and have independent output circuits.
FIBER
(Rx 1550) (Rx 1300)
Rx1 Rx2
W
D
M
(Tx 1300) (Tx 1550)
Tx1 Tx2
Figure 6: Fiber and Cable Ports
Coax
Rx Tx
Tx3 Tx4
11