Finisar FTR-1319-3D-DD Manuale Utente
FTR-1319-3D Long-Wavelength GBIC Specification – November 2007
F i n i s a r
© Finisar Corporation November 16, 2007 Rev. H3
Page 4
Parameter
Symbol Min
Typ Max Units Notes/Conditions
RX_LOS Assert Level
--
-31
dBm
RX_LOS Deassert Level
--
-20
dBm
RX_LOS Hysteresis
--
0.5
dB
RX_LOS Assert Delay
t_loss_on
100
µsec From detection of loss of signal
to assertion of RX_LOS
RX_LOS Negate Delay
t_loss_off
100
µsec From detection of presence of
signal to negation of RX_LOS
TX_DISABLE Assert Time
t_off
10
µsec Rising edge of TX_DISABLE to
fall of output signal below 10%
of nominal
of nominal
TX_DISABLE Negate Time
t_on
1000
µsec Falling edge of TX_DISABLE
to rise of output signal above
90% of nominal
90% of nominal
TX_DISABLE Reset Time
t_reset
10
µsec
TX_DISABLE
HIGH
before
TX_DISABLE set LOW
Table 4. Low speed signal parameters
IV. High Speed Electrical Interface
All high-speed PECL signals are AC-coupled internally.
Parameter
Symbol Min Typ Max
Units Notes/Conditions
Data Input Voltage
V
in
650
2000
mV
PECL differential peak - peak
Data Output Voltage
V
out
370
2000
mV
PECL differential peak - peak
PECL rise/fall
t
r
,t
f
260
psec
20%-80%
differential
Bit Error Rate
BER
10
-12
PRBS
2
7
- 1 test data pattern
Tx Input Impedance
Z
in
75 Ohm
Rx Output Impedance
Z
out
75 Ohm
Table 5. High-speed electrical interface