Installation guide

32 Consolidated "e" Series Hardware Installation Guide
Site Preparation
Total optical system budget for the LX mini-GBIC is 13.5 dB. Measure cable plant losses with a 1310 nm
light source and verify this to be within budget. When calculating the maximum distance attainable
using optical cable with a specified loss per kilometer (for example 0.25 dB/km) Extreme Networks
recommends that 3 dBm of the total budget be reserved for losses induced by cable splices/connectors
and operating margin. Thus, 10.5 dB remains available for cable induced attenuation. There is no
minimum system budget or minimum cable length restriction because the maximum receive power is
the same as the maximum transmit power. There is no minimum attenuation or minimum cable length
restriction.
The ZX mini-GBIC is compatible with and interoperates with long range GBICs. For more information
about the budget requirements and minimum attenutation requirements of long range GBICs, see “Long
Range Mini-GBIC System Budgets”.
Long Range Mini-GBIC System Budgets
Measure cable plant loses with a 1550 nm light source and verify this to be within budge. When
calculating the maximum distance attainable suing optical cable with a specified loss per kilometer (for
example 0.25 dB/km), Extreme Networks recommends that 3 dB of the total budget be reserved for
Receiver
Optical input power sensitivity -23 dBm
Optical input power maximum -3 dBm
Operating wavelength 1270 nm 1355 nm
General
Total system budget 13.5 dB
Table 6: ZX mini-GBIC specifications
Parameter Minimum Typical Maximum
Transceiver
Optical output power -2 dBm 0 dBm 3 dBm
Center wavelength 1540 nm 1550 nm 1570 nm
Receiver
Optical input power sensitivity -23 dBm
Optical input power maximum -3 dBm
Operating wavelength 1540 nm 1550 nm 1570 nm
Table 5: LX mini-GBIC specifications (continued)
Parameter Minimum Typical Maximum