GarrettCom 6K25 manual 6KP4, ’cvr

Magnum 6K25 Managed Fiber Switch Installation and User Guide (04/06)

4.6Power Budget Calculations for Magnum 6K25 PM’s with Fiber Media

Receiver Sensitivity and Transmitter Power are the parameters necessary to compute the power budget. To calculate the power budget of different fiber media installations using Magnum products, the following equations should be used:

OPB (Optical Power Budget) = PT(min) - PR(min)

where PT = Transmitter Output Power, and PR = Receiver Sensitivity

Worst case OPB = OPB - 1dB(for LED aging) - 1dB(for insertion loss) Worst case distance = {Worst case OPB, in dB} / [Cable Loss, in dB/Km]

where the “Cable Loss” for 62.5/125 and 50/125∝m (M.m) is 2.8 dB/km, 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

and the “Cable Loss” for 9/125 (Single-mode) is 0.4 dB/km (LXSC25) and the “Cable Loss” for 9/125 (Single-mode) is 0.25 dB/km

(LXSC40)

and the “Cable Loss” for 9/125 (Single-mode) is 0.2 dB/km (LXSC70)

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

Fiber	Speed,		Std.	Wave	Cable	X’mitr	R’cvr	Worst	Worst*	typical	typical*
Port	Std.	Mode	km	-	Size	Output	Sens.	OPB,	distance	OPB,	distance
Module			fdx	length	∝m	PT , dB	PR ,dB	dB	Km, fdx	dB	Km, fdx
			(hdx)	nm
6KP4-	10Mb	Multi-	2	850	62.5/125	-15.0	-31	14	5	17	6
F10ST	FL	Mode	(2)		100/140	-9.5	-31	19.5	5.9	23.5	7
					50/125	-19.5	-31	19.5	3.4	13.5	4.8
6KPM-	100Mb	Multi-	2	1300	62.5/125	-20	-31	9.0	3.0	14	5
MST, MSC	FX	mode	(0.4)		50/125	-23.5	-31	5.5	2.0	12	4
6KPM-SSC	100Mb	Single-	18+	1300	9/125	-15	-31	14	28	17.5	35
	FX	mode	(0.4)
6KPM-	100Mb	Single-	40	1300	9/125	-5	-34	29	58	32.5	65
	FX	mode	(0.4)
SSCL
6KPM-	100Mb	Multi-	2	1300	62.5/125	-20	-31	9.0	3.0	15.8	5.5
MTRJ	FX	mode	(0.4)		50/125	-23.5	-31	5.5	2.0	12.2	4.0
6KPM-	100Mb	Multi-	2	1300	62.5/125	-19	-31	12	4	16	5.7
	FX	mode	(0.4)
MLC
6KPM-SLC	100Mb	Single-	15+	1310	9/125	-15	-28	11	22	-	-
	FX	Mode	(0.4)
GBIC-	1000Mb	Multi-	0.55	1300	62.5/125	-9.5	-17	5.5	2	12.5	4
		mode
SXSC					50/125
GBIC-	1000Mb	Single-	10	1300	9/125	-9.5	-20	8.5	17	10.5	21
		mode
LXSC10

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