Extreme Networks WM-4T1i Spezifikationen Seite 245

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Extreme Networks Consolidated Hardware Guide 16-7
Configuring I/O Modules
.
Extreme Networks recommends that you reserve 3 dB for losses due to cable splices,
connectors, and operating margin. Table 16-2 describes the cable attenuation, cable
budget, and operating distance for a variety of cable attentuation ratings for the WDMi
module.
A minimum of 2 dB attenuation is required to prevent saturation of the receiver.
Software Requirements
The WDMi module requires that you load ExtremeWare version 6.1.5 or later on the
switch.
Note: See I/O Module LEDs, on page 16-24 for information on LED activity.
Table 16-1: WDMi Optical Interface Specifications
Parameter Minimum Typical Maximum
Transmitter
Optical output power -5 dBm -3 dBm 1 dBm
Channel 1 wavelength 1495 nm 1501 nm 1507 nm
Channel 2 wavelength 1515 nm 1521 nm 1527 nm
Channel 3 wavelength 1535 nm 1541 nm 1547 nm
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 16-2: 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
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