Magnum 10KG Managed Switch Installation and User Guide
07/12
31
www GarrettCom com
.
.
4.6
Power Budget Calculations for 10KG Modules 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
T
(min) - P
R
(min)
where P
T
= Transmitter Output Power, and P
R
= 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
μ
m (M.m) is 2.8 dB/km,
and the “Cable Loss” for 100/140 (Multimode) is 3.3 dB/km,
and the “Cable Loss” for 9/125 (Singlemode) is 0.5 dB/km
and the “Cable Loss” for 9/125 (Singlemode) is 0.4 dB/km (LX25)
and the “Cable Loss” for 9/125 (Singlemode) is 0.25 dB/km (ZX40)
and the “Cable Loss” for 9/125 (Singlemode) is 0.2 dB/km (ZX70)
See
http://www.garrettcom.com/techsupport/power_budget.pdf
for more information on
Power budget calculations
5.0
MAGNUM 10KG MANAGED SWITCH PORT MODULES
This chapter describes each Port Module, including appearance, functionality,
and status displays.
5.1 10KG
Modules
An important feature of the Magnum 10KG is the use of Port Modules for
flexible mixed-media connectivity to RJ-45 copper and various fiber media. The first four
slots (A, B, C, D) of the Magnum 10KG Switch are fixed RJ-45 auto-negotiating copper
ports and SFP (Small Form Pluggable) fiber ports with 1000Mbps capability.
Additionally, the switch can accept up to four additional Port Modules in slots E-H to
provide the user with up to 16 additional ports providing a wide selection of Ethernet
copper and fiber media connections with 10 and 100Mbps capability.
Note: The 10KG Port Modules are not identical to the port modules used in other
GarrettCom 6K switch products. For information about other GarrettCom
products, please see the applicable product manual. For a list of 10KG Port
Modules, refer to Section 1.2
Each 10KG Port Module is individually described in the following section.
