Instruction manual

MULTILINK MC-E10 & MC-E100 CONVERTER SWITCH
MULTILINK ML2400 ETHERNET COMMUNICATIONS SWITCH – INSTRUCTION MANUAL 19
5. The LINK LED on the front of the fiber connector will illuminate when a proper
connection has been established at both ends (and when power is ON in the unit).
If LINK is not lit after cable connection, the normal cause is improper cable polarity.
Swap the fiber cables at the fiber connector to remedy this situation.
4.8.0.3 Connecting Fiber Optic SC-type, "Snap-In"
The following procedure applies to installations using SC-type fiber connectors, i.e., using
multi-mode SC and SC single-mode:
While connecting fiber media to SC connectors, simply snap on the two square male
connectors into the SC female jacks of the Fiber connector until it clicks and secures.
4.8.0.4 Connecting Fiber Optic LC-type, “Small Form factor (SFF)”
The following procedure applies to installations using LC-type fiber connectors, i.e., using
LC single-mode:
While connecting fiber media to LC connectors, simply snap on the two square male
connectors into the LC female jacks of the Fiber connector until it clicks and secures.
4.8.0.5 Connecting Single-Mode Fiber Optic
When using single-mode fiber cable, be sure to use single-mode fiber port connectors.
Single-mode fiber cable has a smaller diameter than multi-mode fiber cable (9/125
microns for single-mode, 50/125 or 62.5/125 microns for multi-mode where xx/xx are the
diameters of the core and the core plus the cladding respectively). Single-mode fiber
allows full bandwidth at longer distances, about 20Km with the multi-mode SC. The same
procedures as for multi-mode fiber apply to single-mode fiber connectors.
4.8.0.6 Power Budget Calculations for Multilink MC-E10 & Multilink MC-E100 Series,
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
GE Multilin 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 50/125μm (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
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