Fiber Optic Cleaning Guidelines

While it is possible to have an Auto-Negotiating device on one side of a media conversion and a fixed (non-Autonegotiating) device on the other, link LEDs will react differently depending on where a problem occurs. Therefore, IMC Networks recommends you:

A)Set every device in the media conversion for Auto-Negotiation or

B)Force 10 Mbps or 100 Mbps connections

Troubleshooting Examples

Following are a series of diagrams that show how the LEDs (Link and

Activity only) will react when a fault occurs on various segments of a

media conversion.

When both the McBasic 10/100 units in a media conversion are set for either Forced 10 Mbps or Forced 100 Mbps mode, the following results occur:

When both the McBasic 10/100 units in a media conversion are set for PNP/Transparent (Auto-Negotiation) mode, the following results occur:

Fiber Optic transmitters and receivers are extremely susceptible to contamination by particles of dirt or dust which can obstruct the optic path and cause performance degradation. Good system performance requires clean optics and connector ferrules.

1)Use fiber patch cords (or connectors, if you terminate your own fiber) only from a reputable supplier; low quality components can cause many hard-to- diagnose problems in an installation.

2)Dust caps are are installed at IMC Networks to ensure factory-clean optical devices. These protective caps should not be removed until the moment of connecting the fiber cable to the device. Assure that the fiber is properly terminated, polished and free of any dust or dirt and that the location is as free from dust and dirt as possible.

3)Store spare caps in a dust free environment such as a sealed plastic bag or box so that when reinstalled they do not introduce any contamination to the optics.

4)Should it be necessary to disconnect the fiber device, reinstall the protective dust caps.