Cisco 7200 VXR - Manual (Page 20)

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SFP and GBIC Interface Cables Installation
For more information on cables, specifications, or product numbers, see the Cisco 7200 VXR Installation and Configuration
Guide or the Network Processing Engine or Network Services Engine Installation and Configuration .
Note All SFPs have LC type connectors. All GBIC ports have SC-type connectors.
After the GBIC or SFP is installed in the Gigabit Ethernet port, you must attach the optical fiber cables to the SFP or GBIC.
Optical fiber cables are commercially available; they are not available from Cisco Systems.
Warning Class 1 laser product. Statement 1008
Warning Because invisible laser radiation may be emitted from the aperture of the port when no cable is connected, avoid
exposure to laser radiation and do not stare into open apertures. Statement 70
Note The 1000BASEZX SFP or GBIC provides an optical power budget of 21.5 dB. Measure your cable plant with an optical
loss test set to verify that the optical loss of the cable plant (including connectors and splices) is less than or equal to
21.5 dB. The optical loss measurement must be performed with a 1550-nm light source.
Attach the Multimode and Single-Mode Optical Fiber Cables
Note We strongly recommend cleaning all optical fiber connections before reconnecting optical cables to equipment. For
information about cleaning optical connectors, see the
Inspection and Cleaning Procedures for Fiber-Optic
Connections document and the Compressed Air Cleaning Issues for Fiber-Optic Connections document.
Attach the appropriate optical fiber cable directly to the LC-type connector on the SFP, or the SC-type receptacle on the GBIC.
You can use either simplex or duplex connectors for most devices.
• Two cables are required for simplex connectors, one cable for transmit (TX) and one for receive (RX).
• One cable that has both TX and RX connectors is required for duplex connectors.
Caution If you plan to use a WS-G5486 or GBIC-LX/LH or SFP-GE-L at distances greater than 984.25 feet (300 meters)
over 50/125-micron or 62.5/125-micron multimode fiber, you must use the mode-conditioning patch cord to
prevent data transmission problems.
Attach the Mode-Conditioning Patch Cord
A mode-conditioning patch cord can be used with GBIC WS-G5486 or GBIC-LX/LH or SFP-GE-L to allow reliable laser
transmission between the single-mode laser source on the GBIC or SFP and a multimode optical fiber cable. To use the
mode-conditioning patch cord, follow these steps:
Step 1 Attach the patch cord. For a GBIC on the NPE-G1, use a patch cord with an SC-type connector. For the SFP on the
NPE-G2, use a patch cord with an LC-type connector.
Step 2 Attach the network ends (beige/beige) of your patch cord to the appropriate 1000BASEX equipment in your building
cable plant.