FAM-70X1S-T40 Datasheet, PDF (10/14 Pages) Source Photonics, Inc. – OC-192/STM-64 SFF Transponder

OC-192/STM-64 Transponder
40/80km transmission
July 10, 2005
Digital Alarm Signal
Table 13 - Alarms Digital signals
Function
Symbol
Common Digital Signal
Level
Indicates all
ALMINT
alarm active
L
LVTTL
H
Transmitter
L
Loss of Tx PLL
TxLOCKERR LVTTL
lock
H
MUX FIFO error
TxFIFOERR
L
LVTTL
H
Laser bias out
of range
LsBIASALM
L
LVTTL
H
Laser
L
temperature out LsTEMPALM LVTTL
of range
H
Laser
power
range
output
out of
LsPOWALM
L
LVTTL
H
Tx alarms
TxALMINT
L
LVTTL
H
Receiver
Loss of Rx PLL
L
RxLOCKERR LVTTL
lock
H
Loss of receiver
average power
alarm
RxPOWALM
L
LVTTL
H
Rx alarms
RxALMINT
L
LVTTL
H
Description
Any alarm from
both transmitter
and receiver
Normal operation
Alarm active
Normal operation
Alarm active
(FIFO overflow)
Normal operation
Alarm active
(laser bias
current alarm)
Normal operation
Alarm active
Normal operation
Alarm active
Normal operation
Alarm from
transmitter
Normal operation
Alarm active
Normal operation
Alarm active
Normal operation
Alarm from
transmitter
Normal operation
Note
Activation Time: 10ms
Deactivation Time: 10ms
Loss of transmitter PLL lock
Activation Time: 1ms
Deactivation Time: 1ms
TxError is internally connected to
TxFIFO RES. (Default) Customer may
have control of TXFIFO RES without
internal loopback (Optional)
Alarm when laser bias changes by a
factor of 2 from beginning of life or if
monitor reaches maximum level
corresponding to approximate150mA.
Activation Time: 10 ms
Deactivation Time: 10 ms
Laser temperature 5°C from nominal,
Activation Time : 10ms
Deactivation Time : 10ms
Output power degrades 3dB below the
BOL Activation Time : 10ms
Deactivation Time : 10ms
Activation Time: 10 ms;
Deactivation Time: 10 ms
Activation Time: 1ms
Deactivation Time: 1ms
Activation Time: <1ms
Deactivation Time: <1ms
Activation Time: 10 ms;
Deactivation Time: 10 ms
Fiberxon Proprietary and Confidential, Do Not Copy or Distribute
Page 10 of 14