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| 型号： | FTR-1621T-49 |
| 元件分类： | 光收发 |
| 英文描述： | FIBER OPTIC TRANSCEIVER, 2700Mbps(Tx), 2700Mbps(Rx), PANEL MOUNT |
| 文件页数： | 4/8页 |
| 文件大小： | 143K |
| 代理商： | FTR-1621T-49 |
FTR-1621T-XX WDM GBIC
Product Specification – December 2004
F i n i s a r
Finisar Corporation December 2004 Rev E
Page 4
IV. High Speed Electrical Interface
All high-speed PECL signals are AC coupled internally.
Parameter
Symbol
Min
Typ
Max
Units Notes/Conditions
RX_LOS Assert Level
--
-40
-36
dBm
Measured on Finisar Eval Card
RX_LOS Deassert Level
--
-34
-30
dBm
Measured on Finisar Eval Card
RX_LOS Hysterisis
--
2.0
dB
Measured on Finisar Eval Card
RX_LOS Assert Delay
t_loss_on
400
sec From detection of loss of signal
to assertion of RX_LOS
RX_LOS Negate Delay
t_loss_off
150
sec From detection of presence of
signal to negation of RX_LOS
TX_DISABLE Assert Time
t_off
1500
sec Rising edge to TX_DISABLE to
fall of output signal below 10%
of nominal
TX_DISABLE Negate Time
t_on
6000
sec Falling edge of TX_DISABLE
to rise of output signal above
90% of nominal
TX_DISABLE Reset Time
t_reset
10
sec TX_DISABLE HIGH before
TX_DISABLE set LOW
Table 4. Low speed signal parameters
Parameter
Symbol
Min
Typ
Max
Units
Notes/Conditions
Data Input Voltage
Vin
650
2000
mV
PECL differential peak - peak
Data Output Voltage
Vout
370
2000
mV
PECL differential peak - peak
Duty Cycle
--
50
%
PECL rise/fall
Tr,Tf
150
psec
20%-80% Differential
Bit Error Rate
BER
10
-12
PRBS 2
23 - 1 test data pattern
Tx Input Impedance
Zin
75
ohm
Singled ended impedance
Rx Output Impedance
Zout
75
ohm
Singled ended impedance
Table 5. High speed electrical interface
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