FWLF-1631-XX DWDM SFP Preliminary Product Specification – August 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
-42
0.5
-36
-34
2
dBm
dBm
dB
-32
100
100
10
RX_LOS Assert Delay
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
-0.2
+0.2
nm TX_Fault will assert before the
device is outside of specified
wavelength range
Ó Finisar Corporation
PRELIMINARY and Confidential
Page 5
Rev B, August 2005
FINISAR [ FINISAR CORPORATION. ]
