Finisar FWDM-1629-XX - Manual (Page 5)

FWDM-1629-XX DWDM SFP Preliminary Product Specification – February 2005
F i n i s a r

Finisar Corporation PRELIMINARY and Confidential Page 5
Rev C, February 2005
IV.
Low Speed Signals
Parameter
Symbol Min Typ Max Units Notes/Conditions
RX_LOS Assert Level -42 -36 dBm
RX_LOS Deassert Level -34 -32 dBm
RX_LOS Hysteresis 0.5 2 dB
RX_LOS Assert Delay t_loss_on 100
µ
sec From detection of loss of signal
to assertion of RX_LOS
RX_LOS Negate Delay t_loss_off 100
µ
sec From detection of presence of
signal to negation of RX_LOS
TX_DISABLE Assert Time t_off 10 µ
sec Rising edge of TX_DISABLE to
fall of output signal below 10%
of nominal
TX_DISABLE Negate Time t_on 1000 µ
sec Falling edge of TX_DISABLE
to rise of output signal above
90% of nominal. Time
indicated is under steady-state
temperature conditions.
TX_DISABLE Reset Time t_reset 10
µ
sec TX_DISABLE HIGH before
TX_DISABLE set LOW
TX_FAULT Assert -0.2 +0.2 nm TX_Fault will assert before the
device is outside of specified
wavelength range