Power Budget Calculations For Magnum 6K32 Pm's - GarrettCom Magnum 6K32 Hardware Installation And User's Manual

Magnum 6K32 Managed Switch
4.6 Power Budget Calculations for Magnum 6K32 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) = P (min) - P
T
where P = Transmitter Output Power, and P
T
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
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
Port km -
Mode
Std.
Module fdx length
(hdx) nm
6KP4- 10Mb Multi- 2 850 62.5/125
Mode
F10ST
FL (2)
6KPM- 1300 62.5/125
100Mb Multi- 2
FX mode (0.4)
MST, MSC
100Mb Single- 18+
(0.4) 1300
6KPM-SSC
FX mode
100Mb Single- 40
6KPM- (0.4) 1300
FX mode
SSCL
100Mb Multi- 2 1300 62.5/125
6KPM-
(0.4)
FX mode
MTRJ
2
100Mb Multi-
6KPM- (0.4) 1300 62.5/125
FX mode
MLC
15+
6KPM-SLC 100Mb Single-
(0.4) 1310
Mode
FX
0.55
1000Mb Multi-
GBIC- 1300 62.5/125
mode
SXSC
10
1000Mb Single-
GBIC- 1300
mode
LXSC10
www GarrettCom com . .
Installation and User Guide (02/05)
(min)
R
= Receiver Sensitivity
R
µm
(M.m) is 2.8 dB/km,
Cable X'mitr R'cvr Worst Worst* typical
Size Output Sens. OPB, distance OPB,
µm
P dB P dB dB Km, fdx dB
T , R ,
-15.0 -31 14 5 17
100/140 -9.5 -31 19.5 5.9 23.5
50/125 -19.5 -31 19.5 3.4 13.5
-20 -31 9.0 14
3.0
50/125 -23.5 -31 5.5 2.0 12
9/125 -15 -31 14 17.5
28
9/125 -5 -34 29 58 32.5
-20 -31 9.0 3.0 15.8
50/125 -23.5 -31 5.5 12.2
2.0
-19 -31 12 4 16
9/125 -15 -28 11
22
-9.5 -17 5.5 2 12.5
50/125
9/125 -9.5 -20 8.5 17 10.5
38
typical*
distance
Km, fdx
6
7
4.8
5
4
35
65
5.5
4.0
5.7
-
-
4
21