Cisco 7304 Installation Guide Page 31

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3-7
Cisco 7304 Router Modular Services Card and Shared Port Adapter Hardware Installation Guide
OL-4681-01
Chapter 3 Overview: Cisco 7304 Router Shared Port Adapters
GigabitEthernet SPA Overview
SFP Connections
The small form-factor pluggable (SFP) module is an input/output (I/O) device that plugs into the Gigabit
Ethernet optical slot on the SPA-2GE-7304, linking the port with a 1000BASE-X fiber-optic network.
An SFP module is shown in Figure 3-7.
Note The SPA-2GE-7304 will only accept the SFP modules listed as supported in this document. An SFP
check is run every time an SFP is inserted into the SPA-2GE-7304 and only SFP modules that pass this
check will be usable by the SPA-2GE-7304.
SFP modules exist for technologies other than Gigabit Ethernet and for products other than the
SPA-2GE-7304. However, the information in this document pertains only to SFP modules that plug into
the SPA-2GE-7304 fiber-optic ports.
Figure 3-7 SFP Module
The SFP module has a receiver port (RX) and a transmitter port (TX) that compose one optical interface.
Table 3-6, Table 3-7, and Table 3-8 provide SFP module information and specifications.
101310
Table 3-6 SFP Module Options
SFP Module
Product Number SFP Module Description
SFP-FCGE-S Short wavelength
(1000BASE-SX)
Contains a Class 1 laser of 850 nm for
1000BASE-SX (short wavelength) applications.
SFP-FCGE-L Long wavelength/long haul
(1000BASE-LX/LH)
Contains a Class 1 laser of 1300 nm for
1000BASE-LX/LH (long wavelength)
applications.
SFP-GE-Z Extended distance
(1000BASE-ZX)
Contains a Class 1 laser of 1550 nm for
1000BASE-ZX (extended wavelength)
applications.
Table 3-7 SFP Module Transmit Power, Receive Power, and Power Budget
SFP Module
Transmit Power Receive Power
Minimum Maximum Minimum Maximum
SFP-FCGE-S –9.5 dBm
1
–4 dBm
1
–17 dBm 0 dBm
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