FTR-1631-XX DWDM GBIC Preliminary Product Specification
Finisar
Parameter
RX_LOS Assert Level
RX_LOS Deassert Level
RX_LOS Hysteresis
RX_LOS Assert Delay
RX_LOS Negate Delay
TX_DISABLE Assert Time
Symbol
Min
-42
Typ
-36
-34
2
Max
Units Notes/Conditions
dBm
dBm
dB
µsec
µsec
-32
300
150
t_loss_on
t_loss_off
From detection of loss of signal
to assertion of RX_LOS
TX_DISABLE Negate Time
TX_DISABLE Reset Time
TX_FAULT Assert
From detection of presence of
signal to negation of RX_LOS
t_off
1.5
msec Rising edge of TX_DISABLE to
fall of output signal below 10%
of nominal
t_on
6.0
msec Falling edge of TX_DISABLE
to rise of output signal above
90% of nominal. Time
indicated is under steady-state
temperature conditions.
t_reset
10
µsec
TX_DISABLE HIGH before
TX_DISABLE set LOW
-0.1
0.1
nm TX_Fault will assert before the
device is outside of specified
wavelength range
Table 4. Low Speed Signal Parameters
IV. High Speed Electrical Interface
All high-speed PECL signals are AC coupled internally.
Parameter
Data Input Voltage
Data Output Voltage
PECL rise/fall
Bit Error Rate
Tx Input Impedance
Rx Output Impedance
Symbol
V
in
V
out
T
r
,T
f
BER
Z
in
Z
out
75
75
Min
650
370
Typ
Max
2000
2000
150
10
-12
Ohm
Ohm
Units
mV
mV
psec
Notes/Conditions
PECL differential peak - peak
PECL differential peak - peak
20% -80% Differential
PRBS 2
23
- 1 test data pattern
Table 5. High Speed Electrical Interface
©
Finisar Corporation
Rev J, August 2004
PRELIMINARY and Confidential
Page 5
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