Extreme Networks WM-4T1i Especificações descarregar pdf (Página 173)

Extreme Networks Consolidated Hardware Guide 10-7

Configuring I/O Modules

Extreme Networks recommends that you reserve 3 dB for losses due to cable splices,

connectors, and operating margin. Table 10-2 describes the cable attenuation, cable

budget, and operating distance for a variety of cable attentuation ratings for the

GM-WDMi module.

A minimum of 2 dB attenuation is required to prevent saturation of the receiver.

Software Requirements

The GM-WDMi module requires that you load ExtremeWare version 6.1.8 or later and

BootROM 6.5 or later on your switch.

Note: See “I/O Module LEDs,” on page 10-18 for information on LED activity.

Channel 4 wavelength 1555 nm 1561 nm 1567 nm

Receiver

Optical input power sensitivity -17 dBm

Optical input power maximum -1 dBm

Fiber Optic Cable

Back reflection -25 dB

Table 10-2: GM-WDMi Maximum Transmit Distances

Cable Attenuation Cable Budget Maximum Distance

0.20 dB/km 9 dB 45 km

0.25 dB/km 9 dB 36 km

0.30 dB/km 9 dB 30 km

Table 10-1: GM-WDMi Optical Interface Specifications (continued)

Parameter Minimum Typical Maximum

1 2 ... 168 169 170 171 172 173 174 175 176 177 178 ... 305 306

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