FWDM-1521-7D-xx SFP Product Specification – September 2005
F i n i s a r
IV.
Low Speed Signals
Parameter
Symbol Min Typ Max Units Notes/Conditions
RX_LOS Assert Level
RX_LOS Deassert Level
RX_LOS Hysteresis
RX_LOS Assert Delay
-30
dBm
dBm
dB
-19
100
100
10
0.5
2
t_loss_on
t_loss_off
t_off
From detection of loss of signal
to assertion of RX_LOS
msec
RX_LOS Negate Delay
From detection of presence of
signal to negation of RX_LOS
msec
msec
TX_DISABLE Assert Time
Rising edge of TX_DISABLE to
fall of output signal below 10%
of nominal
TX_DISABLE Negate Time
t_on
1000
Falling edge of TX_DISABLE
to rise of output signal above
90% of nominal. Time
msec
indicated is under steady-state
temperature conditions.
TX_DISABLE Reset Time
TX_FAULT Assert
t_reset
10
TX_DISABLE HIGH before
TX_DISABLE set LOW
msec
msec
msec
100
300
From fault to assertion of
TX_FAULT
Initialization Time
From power on to negation of
TX_FAULT using
TX_DISABLE
Ó Finisar Corporation September 2005 Rev.D
Page 4
FINISAR [ FINISAR CORPORATION. ]
