Power Budget Calculations For Ml1200 Pm's With Fiber Media - GE MultiLink ML1200 Instruction Manual

OPERATION
4.1.5

Power Budget Calculations for ML1200 PM's with Fiber Media

Fiber Port Speed, Std.
Module
C7 10Mb
FL
C8, C9 100Mb
FX
CA 100Mb
FX
CB 100Mb
FX
CC 100Mb
FX
CD 100Mb
FX
CE 100Mb
FX
H3, HG 1000 Mb FX
(Gigabit)
4–4
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
Multilink products, the following equations should be used:
OPB (Optical Power Budget) = P
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 50/125μm (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 (LX25)
and the "Cable Loss" for 9/125 (Single-mode) is 0.25 dB/km (ZX40)
and the "Cable Loss" for 9/125 (Single-mode) is 0.2 dB/km (ZX70)
The following data has been collected from component manufacturer's (Agilent's and
Lucent's) web sites and catalogs to provide guidance to network designers and installers.
Mode Std. km Wavelength
fdx nm
(hdx)
Multi-Mode 2 850
(2)
Multi-mode 2 1300
(0.4)
Single-mode 18+ 1300
(0.4)
Single-mode 40 1300
(0.4)
Multi-mode 2 1300
(0.4)
Multi-mode 2 1300
(0.4)
Single-Mode 15+ 1310
(0.4)
Single-Mode 10 1310
(min) - P (min)
T R
= Receiver Sensitivity
R
Cable Size/μm X'mitr R'cvr
Output Sens.
P P
T R
dB dB
62.5/125 -15.0 -31
100/140 -9.5 -31
50/125 -19.5 -31
62.5/125 -20 -31
50/125 -23.5 -31
9/125 -15 -31
9/125 -5 -34
62.5/125 -20 -31
50/125 -23.5 -31
62.5/125 -19 -31
9/125 -15 -28
9/125 -10.0 -22
MULTILINK ML1200 MANAGED FIELD SWITCH – INSTRUCTION MANUAL
CHAPTER 4: OPERATION
Worst Worst* typical typical*
OPB, distance OPB, distance
dB Km dB Km
fdx fdx
14 5 17 6
19.5 5.9 23.5 7
19.5 3.4 13.5 4.8
9.0 3.0 14 5
5.5 2.0 12 4
14 28 17.5 35
29 58 32.5 65
9.0 3.0 15.8 5.5
5.5 2.0 12.2 4.0
12 4 16 5.7
11 22 - -
10 22 11 24