Table 1-1 Eia Types Compatible With The 15454-Sa-Ansi Only; Eia Installation - Cisco ONS 15454 Reference Manual

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Shelf and Backplane Hardware

Optional EIA backplane covers are typically preinstalled when ordered with the ONS 15454. A minimal

amount of assembly might be required when EIAs are ordered separately from the ONS 15454. If you

are installing EIAs after the shelf assembly is installed, plug the EIA into the backplane. The EIA has

six electrical connectors that plug into six corresponding backplane connectors. The EIA backplane must

replace the standard sheet metal cover to provide access to the coaxial cable connectors. The EIA sheet

metal covers use the same screw holes as the solid backplane panels, but they have 12 additional 6-32 x

1/2 inch Phillips screw holes so you can screw down the cover and the board using standoffs on the EIA

When using the RG-179 coaxial cable on an EIA, the maximum distance available (122 feet [37 meters])

is less than the maximum distance available with standard RG-59 (734A) cable (306 feet [93 meters]).

The maximum distance when using the RG-59 (734A) cable is 450 feet (137 meters). The shorter

maximum distance available with the RG179 is due to a higher attenuation rate for the thinner cable.

Attenuation rates are calculated using a DS-3 signal:

1.5.2 EIA Configurations

EIA Types Compatible with the 15454-SA-ANSI Only

For RG-179, the attenuation rate is 59 dB/kft at 22 MHz.

For RG-59 (734A) the attenuation rate is 11.6 dB/kft at 22 MHz.

shows the EIA types supported only by ONS 15454 shelf assembly 15454-SA-ANSI.

A-Side Product Number

15454-EIA-BNC-A24=

15454-EIA-BNC-A48=

B-Side Product Number

15454-EIA-BNC-B24=

15454-EIA-BNC-B48=

Cisco ONS 15454 Reference Manual, R7.0.1

1.5 1.5.1 EIA Installation