FWLF1521P2Nxx SFP Product Specification – Jan 2008
Finisar
IV.
Low Speed Signals
Symbol
Min
-30
0.5
t_loss_on
t_loss_off
t_off
Typ
Max
-19
2
100
100
10
Units Notes/Conditions
dBm
dBm
dB
µsec
From detection of loss of signal
to assertion of RX_LOS
µsec
From detection of presence of
signal to negation of RX_LOS
µsec
Rising edge of TX_DISABLE to
fall of output signal below 10%
of nominal
µsec
Falling edge of TX_DISABLE
to rise of output signal above
90% of nominal. Time
indicated is under steady-state
temperature conditions.
µsec
TX_DISABLE HIGH before
TX_DISABLE set LOW
µsec
From fault to assertion of
TX_FAULT
msec From power on to negation of
TX_FAULT using
TX_DISABLE
Parameter
RX_LOS Assert Level
RX_LOS Deassert Level
RX_LOS Hysteresis
RX_LOS Assert Delay
RX_LOS Negate Delay
TX_DISABLE Assert Time
TX_DISABLE Negate Time
t_on
1000
TX_DISABLE Reset Time
TX_FAULT Assert
Initialization Time
t_reset
10
100
300
©
Finisar Corporation Jan 2008 Rev.A Preliminary and Confidential
Page 4