Chapter 2. Installation and Operation61200659L1-1 MX2800 User Manual 2-5RACKMOUNT INSTALLATIONThe MX2800 STS-1 can be mounted into a standard 19-inch or23-inch equipment rack. Follow these steps to mount your unit intoa rack:1. Prepare the MX2800 STS-1 mounting ears by scraping thepaint away from the mounting ears’ portion that makes contactwith the rack and the portion where the screw mounts into theside of the MX2800 STS-1.2. Install the mounting flanges on each side of the MX2800 STS-1at one of the three available positions.3. After the flanges have been installed, position the MX2800STS-1 at the correct location within the rack and secure themounting flanges to the mounting rails of the rack.4. Make all network, DTE, and power connections to the rear ofthe unit. See Power Up on page 2-2 for more information onmaking the DC power connection.5. Using the 8-position modular to DB-9 female connector and the8-position modular to 8-position modular cable, connect aVT 100 terminal device to the CRAFT port on the front panel ofthe unit.Be sure to install the flanges with the screws provided.Two MX2800 STS-1s may be stacked with no spacing between units.ADTRAN recommends 1U (1.75") of separation above and below thetwo stacked units. This spacing allows the unit to dissipate heat. Thedesign of the MX2800 STS-1 uses the chassis to distribute heatgenerated by the unit's internal cards. This design allows the unit tooperate without a cooling fan, which increases its overall reliability.