GarrettCom Magnum 3000 manual Rack-mounting, ’cvr

Magnum 3000 Stackable Hubs Installation and User Guide (07/06)

and the “Cable Loss” for 100/140 (Multi-mode) is 3.3 dB/km, and the “Cable Loss” for 9/125 (Single-mode) is 0.5 dB/km

The following data has been collected from component manufacturer’s (HP’s and Siemens’) web sites and catalogs to provide guidance to network designers and installers.

Fiber

Port

Module

RPM-FST,

FSC

RPM-

SMF(ST)

Speed,		Std.	Wave	Cable	X’mitr	R’cvr	Worst	Worst*	typical	typical*
Std.	Mode	km	-	Size	Output	Sens.	OPB,	distance	OPB,	distance
		fdx	length	∝m	PT , dB	PR ,dB	dB	Km, fdx	dB	Km, fdx
		(hdx)	nm
10 Mb	Multi-	2		62.5/125	-15.0	-31	14	5	17	6
			850	100/140	-9.5	-31	19.5	5.9	23.5	7
FL	mode	(2)
				50/125	-19.5	-31	9.5	3.4	13.5	4.8
10 Mb	Single-	10	1300	9/125	-30	-39	7	14	13	26
FL	mode	(5)

*Note: The use of either multi-mode or single-mode fiber to operate at 100Mbps speed over long distances (i.e., in excess of approx. 400 meters) can be achieved only if the following factors are both applied:

•The 100Mb fiber segment must operate in full-duplex (FDX) mode, i.e. the full-duplex (factory default) setting for 100Mbps fiber ports must be used, and

•The worst-case OPB of the fiber link must be greater than the fiber cable’s

passive Attenuation.

(Attenuation = Cable loss + LED aging loss + Insertion loss + safety factor)

3.1.9Rack-mounting

Installation of a Magnum 3000s Hub in a 19” rack is a simple procedure. The

units are 1U (1.70”) high. When properly installed, the front-mounted LED status indicators should be in plain view and easy to read. Rack-mount installation requires

special 19” rack-mounted brackets and screws

StackableMagnum 3000Hub

GARRETT

(included with each 3000s unit). The brackets attach to the front sides of the Hub,

which is then fastened into a standard 19” RETMA rack.

The 23” brackets and ETSI brackets are also available (optional) for Rack- mounting of Magnum 3000 units. The 23” brackets are more popular in the Telco industry where they are a standard for Central Office Rack-mounting purposes. The 23” brackets are mainly used for larger equipment assemblies in rack mounting frames, and are frequently accessed in operation from both sides.

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