Extreme Networks WM-4T1i Spezifikationen PDF herunterladen (Seite 30)

1-4 Extreme Networks Consolidated Hardware Guide

Summary of Common Switch Features

splices/connectors and operating margin. While 8.5 dBm remains available for cable

induced attenuation, the 1000Base-SX standard specifies supported distances of 275

meters over 62.5 micron multimode fiber and 550 meters over 50 micron multimode

fiber. There is no minimum attenuation or minimum cable length restriction.

Total optical system budget for the LX mini-GBIC is 13.5 dBm. 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 dBm 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.

Safety Information

Before you begin the process of installing or replacing a mini-GBIC, read the safety

information in this section.

Caution: Mini-GBICs can emit invisible laser radiation. Avoid direct eye exposure

to beam.

Mini-GBICs are class 1 laser devices. Use only Extreme-approved devices.

Table 1-3: LX Mini-GBIC Specifications

Parameter Minimum Typical Maximum

Transceiver

Optical output power -9.5 dBm -3 dBm

Center wavelength 1275 nm 1310 nm 1355 nm

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 dBm

1 2 ... 25 26 27 28 29 30 31 32 33 34 35 ... 305 306

Keine Kommentare

Extreme Networks WM-4T1i Spezifikationen Seite 30