3Com 3CGBIC97 - Switch 4007 70km Gigabit Enet Gbic 설치 매뉴얼 - 페이지 2
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70-km Gigabit Ethernet GBIC Transceiver Installation Guide
Safety Precautions
Table 1 shows the transmission range and other data for this connection.
Table 1 70-km Gigabit Ethernet GBIC Single-Mode Transmission Range
Diameter
Fiber Type
(microns)
Single-mode
9 m core
Table 2 shows the optical parameters of the
Table 2 Optical Parameters
Parameter
Symbol Min
Transmitter
Wavelength
Optical output
P
out
power
Receiver
Optical input
P
in
power
Be sure to follow all safety precautions when you replace a GBIC
transceiver in the system. To avoid electric shocks and burns to yourself
and damage to the equipment, read and follow these warnings:
WARNINGS: When the system is on:
Never insert a metal object such as a screwdriver or a finger with
jewelry into open module slots.
Do not touch any connections inside the chassis with your hands or
fingers.
Fiber Safety Precautions
The GBIC ports on your system use lasers. To ensure your safety when you
install or work with these GBIC systems, read and comply with the
precautions in this section.
Minimum
Connector End
Polish
PC
Typ
Max
1540
1550
1570
c
–4
N/A
N/A
–24
N/A
N/A
Transmission Range
10 – 70 km (6.2 – 43.4 mi)
70-km Gigabit Ethernet GBIC.
Units
Notes/Conditions
nm
dBm
Average power
coupled into
single-mode fiber
dBm
BER< 10
-12
with
PRBS 2
7
–1 test data
pattern
@ 1.25Gb/s