3.1 Names and Functions of each Plug-in Module Part
3-3
Key
Functions and Operation Methods
(e) Ext Clock
In(*
4
)
1.5 M to
2.6 GHz
Input connector of external clock for
1.5 to 2666 M signals
Input
frequency
1.544 MHz, 2.048 MHz,
8.448 MHz, 34.368 MHz,
44.736 MHz, 51.84 MHz,
139.264 MHz, 155.52 MHz,
622.08 MHz, 2488.32 MHz,
2666.057 MHz (*
3
)
Connector
SMA (50
Ω
)
(f) LED
Link
The LED is switched on when the syn-
chronization of SDH/SONET or GFP/PPP
is established.
Tx
The LED is switched on while transmit-
ting a GFP/PPP frame.
Error
The LED is switched on when Er-
rors/Alarms are detected by the received
signal.
Rx
The LED is switched on while receiving a
GFP/PPP frame.
(g) Sync Out (*
5
)
Output connector for Sync signals
Output
signal
1/16 clock of
OTU/SDH/SONET/PDH
(139M).
1/4 clock of PDH (except
139M) /DSn.
Frame synchronization signals
of
OTU/SDH/SONET/PDH/DSn.
Connector
SMA (50
Ω
)
(h) Rcv Clock Out 1.5 M
to 2.6 G
Output connector for transmitting clock-
recovered signals from reception signals
Output
frequency
1.544 MHz, 2.048 MHz,
8.448 MHz, 34.368 MHz,
44.736 MHz, 51.84 MHz,
139.264 MHz, 155.52 MHz,
622.08 MHz, 2488.32 MHz,
2666.057 MHz (*
3
)
Connector
SMA (50
Ω
)