GE ML1200 instruction manual Product Description

CHAPTER 2: PRODUCT DESCRIPTION PRODUCT DESCRIPTION

2.1.1Four-port SFF fiber modules (CC Module, CD Module), 100Mb fiber

In a four-port SFF (Small Form Factor) fiber port module, all of the fiber ports are of the same speed (100Mb), mode, and connector type. Small Form Factor (SFF) Fiber Ports come in multi-mode forms MT-RJ or LC-type connectors, and single-mode form LC-type connectors.

The 100Mb fiber four-port modules for the Multilink ML1200’s normally are set (factory default) to operate in full-duplex mode for best fiber distance and performance. The user may select full- or half-duplex mode per-port through set port command. The set-up of the software gives the user flexibility to adapt to any FDX or HDX type of Fast Ethernet devices).

There are three LED’s per fiber port. The Link (LK) LED indicates “ready for operation” on that port when lit. The F/H LED indicates operation in full-duplex mode when ON (half- duplex when OFF). The blinking ACT LED indicates receiving Activity on the port. A fiber cable must be connected into a SFF port and the Link (LK) indicator for that port must be ON (indicating there is a powered-up device at the other end of the cable) in order for a LK LED to provide valid indications of operating conditions on that port.

MULTILINK ML1200 MANAGED FIELD SWITCH – INSTRUCTION MANUAL 2–3