Chapter 5 Ethernet Cards
5.8.2 GBIC Description
GBIC dimensions are:
•Height 0.39 in. (1 cm)
•Width 1.18 in. (3 cm)
•Depth 2.56 in. (6.5 cm) GBIC temperature ranges are:
•COM—commercial operating temperature range -5°C to 70°C
•EXT—extended operating temperature range 0°C to 85°C
•IND—industrial operating temperature range -40°C to 85°C
Figure 5-7 GBICs with Clips (left) and with a Handle (right)
| Clip |
Receiver | Handle |
Transmitter | Receiver |
| Transmitter |
5.8.2.1 DWDM and CWDM GBICs
DWDM (15454-GBIC-xx.x, 15454E-GBIC-xx.x) and CWDM (15454-GBIC-xxxx,
15454E-GBIC-xxxx) GBICs operate in the ONS 15454 G-Series card when the card is configured in Gigabit Ethernet Transponding mode or in Ethernet over SDH mode. DWDM and CWDM GBICs are both wavelength division multiplexing (WDM) technologies and operate over single-mode fibers with SC connectors. Cisco CWDM GBIC technology uses a 20 nm wavelength grid and Cisco ONS 15454 DWDM GBIC technology uses a 1 nm wavelength grid. CTC displays the specific wavelengths of the installed CWDM or DWDM GBICs. DWDM wavelengths are spaced closer together and require more precise lasers than CWDM. The DWDM spectrum allows for optical signal amplification. For more information on G-Series card transponding mode, see the Cisco ONS 15454 Reference Manual.
The DWDM and CWDM GBICs receive across the full 1300 nm and 1500 nm bands, which includes all CWDM, DWDM, LX/LH, ZX wavelengths, but transmit on one specified wavelength. This capability can be exploited in some of the G-Series transponding modes by receiving wavelengths that do not match the specific transmission wavelength.
Note G1000-4 cards support CWDM and DWDM GBICs. G1K-4 cards with the Common Language Equipment Identification (CLEI) code of WM5IRWPCAA (manufactured after August 2003) support CWDM and DWDM GBICs. G1K-4 cards manufactured prior to August 2003 do not support CWDM or DWDM GBICs.
The ONS 15454-supported CWDM GBICs reach up to 100 to 120 km over single-mode fiber and support eight wavelengths as shown in Table 5-16.
Cisco ONS 15454 SDH Reference Manual, R5.0
