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| 型号： | FCM-8520-3 |
| 元件分类： | 光收发 |
| 英文描述： | FIBER OPTIC TRANSCEIVER, 1250Mbps(Tx), 1250Mbps(Rx), PANEL MOUNT |
| 文件页数： | 4/7页 |
| 文件大小： | 163K |
| 代理商： | FCM-8520-3 |
FCM-8520/8521-3 1000BASE-T GBIC Product Specification
Fin i sar
Finisar Corporation
Page 4
Rev A, Feb 2003
IV. High-Speed Electrical Interface
All high-speed signals are AC-coupled internally.
V.
General Specifications
Notes:
1.
Clock tolerance is
±50 ppm
2.
The FCM-8520/8521-3 is a full-duplex device in the “Preferred Master” mode.
3.
Automatic crossover detection is enabled. External crossover cable is not required
High-Speed Electrical Interface,
Host-GBIC
Parameter
Symbol
Min
Typ
Max
Units
Notes/Conditions
Differential Input
Voltage
Vindiff
0.50
2.00
V
Differential peak - peak
Differential Output
Voltage
Voutdiff
0.37
2.00
V
Differential peak - peak
Rise/Fall Time
Tr,Tf
250
psec
20%-80% Differential
Tx Input Impedance
Zin
75
Ohm
Rx Output Impedance
Zout
75
Ohm
Table 5. High-speed electrical interface, host-GBIC
General
Parameter
Symbol Min
Typ
Max
Units Notes/Conditions
Data Rate
BR
1.25
Gb/sec IEEE 802.3 compatible.
See Notes 1 and 2 below.
Cable Length
L
100
m
Category 5 UTP. BER <10-10
Table 6. General specifications
High-Speed Electrical
Interface,
Transmission Line-GBIC
Parameter
Symbol
Min
Typ
Max
Units Notes/Conditions
Line Frequency
fL
125
MHz
5-level encoding, per
IEEE 802.3ab.
Tx Output Impedance
Zout,TX
100
Ohm
Differential, for all
frequencies between
1MHz and 125MHz.
Rx Input Impedance
Zin,RX
100
Ohm
Differential, for all
frequencies between
1MHz and 125MHz.
Table 4. High-speed electrical interface, transmission line-GBIC
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