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Mode Conditioning cables - connector types

bberry
Level 1
Level 1

I have a situation where I must use the mode conditioning cables between my LX/LH interfaces and my multi-mode fiber. I have situations where I need to use both CAB-GELX-625= (GBIC) and CAB-MCP-LC= (SFP). My question revolves around the type of ends on the cables. According to

http://www.cisco.com/en/US/customer/products/hw/switches/ps679/products_installation_and_configuration_guide09186a008007d1cb.html

the cable for the GBIC interface seems to have both connector types as SC which means I will need an SC-to-ST converter to connect it to my infrastructure. Only big issue here is this adding to my distance. I am already looking at about 2000 ft on the fiber run. I am hoping that the splicing/connectors through out the run are not significant enough to cause issues.

I have been unable,however, to determine both ends on the SFP conditioning cable. I understand that the equipment end will be LC but what is on the cable end? I am getting ready to place the order for these and want to make sure I order the necessary piece parts to connect backinto my infrastructure.

Yes, I would have preferred single mode but this is an old infrastructure. This is is plan A with plan B probably being adding another switch in the middle to act as a repeater until I can get better fiber conditions. I plan on trying to get funds to replace this with single mode fiber next year. In the mean time I am stuck with what I have.

1 Reply 1

smalkeric
Level 6
Level 6

A mode-conditioning patch cord (product number CAB-GELX-625 or equivalent) is required to comply with IEEE standards. The IEEE found that link distances could not be met with certain types of fiber-optic cable cores. The solution is to launch light from the laser at a precise offset from the center, which is accomplished by using the mode-conditioning patch cord. At the output of the patch cord, the Cisco 1000BASE-LX/LH GBIC is compliant with the IEEE 802.3z standard for 1000BASE-LX.

http://www.cisco.com/en/US/products/hw/modules/ps872/products_data_sheet09186a008014cb5e.html