Appendix B Transceiver, Chassis Connectors, and Cable and Adapter Specifications
Transceiver Support for Uplink Ports
Table B-3lists the fiber loss budgets for the 1000BASE-T and 1000BASE-X SFP transceivers.
Table B-3 | Fiber Loss Budgets for the 1-GB SFP Transceivers | |
| | | |
1-GB SFP Transceiver | Transmit Power | Receive Power | Transmit and Receive |
Product Number | (dBm) | (dBm) | Wavelengths (nm) |
| | | | |
GLC-SX-MM | | –4 (maximum) | 0 (maximum) | 770 to 860 |
(1000BASE-SX) | –9.5 (minimum) | –17 (minimum) | |
| | | | |
GLC-LH-SM | | –3 (maximum) | –3 (maximum) | 1260 to 1355 |
(1000BASE-LX/LH) | –9.5 (minimum) | –20 (minimum) | |
| | | | |
GLC-ZX-SM | | 5 (maximum) | –3 (maximum) | 1500 to 1580 |
(1000BASE-ZX) | 0 (minimum) | –23 (minimum) | |
| | | | |
GLC-BX-D | | –3 (maximum) | –3 (maximum) | 1480 to 1500 (transmit) |
(1000BASE-BX-D) | –9 (minimum) | –19.5 (minimum) | 1260 to 1360 (receive) |
| |
| | | | |
GLC-BX-U | | –3 (maximum) | –3 (maximum) | 1260 to 1360 (transmit) |
(1000BASE-BX-U) | –9 (minimum) | –19.5 (minimum) | 1480 to 1500 (receive) |
| |
| | | | |
Note For the GLC-ZX-SM, the minimum attenuation between the transmit bore (TX) and the receive bore (RX) is 8 db. When using short distances of single-mode fiber cable, you might need to insert an inline optical attenuator in the link to avoid overloading the receiver.
Table B-4lists the physical and environmental specifications for the 1-GB SFP transceivers.
Table B-4 1-GB SFP Transceiver Physical and Environmental Specifications
Item | Specification |
| |
Dimensions (H x W x D) | 0.04 x 0.53 x 2.22 in. (8.5 x 13.4 x 56.5 mm) |
| |
Operating temperature | 32° to 122°F (0° to 50°C) |
Storage temperature | –40° to 185°F (–40° to 85°C) |
| |
Note You can use any combination of SFP modules that your Cisco device supports. The only restrictions are that each SFP port must match the wavelength specifications on the other end of the cable and that the cable must not exceed the stipulated cable length for reliable communications.
CWDM SFP Transceivers
The four uplink ports on the switches also support CWDM SFP transceivers. The CWDM SFP transceiver uses an LC optical connector to connect to single-mode fiber-optic (SMF) cable. You can connect the CWDM SFPs to CWDM passive optical system optical add/drop multiplexer (OADM) modules or multiplexer/demultiplexer plug-in modules using single-mode fiber-optic cables. The supported CWDM SFP transceivers, their associated wavelengths, and their connector color codes are listed in Table B-5
Catalyst 4948E an Catalyst 4948E-F Switch Installation Guide
