TN_3GBTS_HW_2007_0042

Technical Note

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TN_3GBTS_HW_2007_0042

Requirements for installing Flexi BTS modules to 19” rack

Nokia Flexi WCDMA Base Stat ion

Technical Note


The information in this document is subject to change without notice and describes only the product defined in the introduction of this documentation. This document is intended for the use of Nokia's customers only for the purposes of the agreement under which the document is submitted, and no part of it may be reproduced or transmitted in any form or means without the prior written permission of Nokia. The document has been prepared to be used by professional and properly trained personnel, and the customer assumes full responsibility when using it. Nokia welcomes customer comments as part of the process of continuous development and improvement of the documentation.

The information or statements given in this document concerning the suitability, capacity, or performance of the mentioned hardware or software products cannot be considered binding but shall be defined in the agreement made between Nokia and the customer. However, Nokia has made all reasonable efforts to ensure that the instructions contained in the document are adequate and free of material errors and omissions. Nokia will, if necessary, explain issues which may not be covered by the document.

Nokia's liability for any errors in the document is limited to the documentary correction of errors. NOKIA WILL NOT BE RESPONSIBLE IN ANY EVENT FOR ERRORS IN THIS DOCUMENT OR FOR ANY DAMAGES, INCIDENTAL OR CONSEQUENTIAL (INCLUDING MONETARY LOSSES), that might arise from the use of this document or the information in it.

This document and the product it describes are considered protected by copyright according to the applicable laws.

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Other product names mentioned in this document may be trademarks of their respective companies, and they are mentioned for identification purposes only.

Copyright © Nokia Corporation 2007. All rights reserved.

Contacts:

Contact to your local Nokia support

Summary of changes:

17-Jan-2007 / 1.0 / Approved

Technical Note


Purpose

The document contains information about the requirements and instructions for installing the Flexi WCDMA BTS modules into a 3rd party 19” rack.

Validity

Keywords

WCDMA BTS, Flexi BTS, rack, installation

Detailed description

The current Flexi BTS user manual, published 16.10.2006 is lacking some requirements and instructions for installing the Flexi modules into a 3rd party 19” rack. In this Technical Note the principal requirements are described.

Nokia will update the requirements and dimensions for 19" rack installation to the next revision of the user manual, which is will be published March 07.

Dimension of module fixing points of 19” rack

The Flexi complies with the 19” racks, which are defined by IEC standard 60297 “Dimensions of mechanical structures of the 482,6 mm (19 in) series” , parts 1-4. The standard gives dimensions for rack mechanics and module fixing points for different U-sized equipment.

Trays are required to provide support for the Flexi modules

Trays are required under each module for providing adequate support. The use of trays is not defined by the standards, whereas the correct location of the trays related to the module fixing points need to be ensured before installation or purchasing of 19” rack. The location of tray is described in attached drawing 1.

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Technical Note


Modules are installed to rack with their casings

Flexi modules are installed to the 19” rack with their sheet metal casings. The casings provide support for the core modules and guide cooling air flow of each module. However, the plastic front and rear covers are not used with rack installation.

Other requirements

The requirements for environmental conditions, site powering and rack cooling air are defined in Flexi WCDMA user manual document Requirements for Installation and Operation.

The requirements for installing 3rd party 19”rack will be completed to the next revision of Flexi WCDMA user manual document Requirements for Installation and Operation. The updated set of Flexi user manuals will be published at the end of March 2007.

Solution / Instructions

1. Ensure dimensioning of rack complies with IEC standard 60297.

2. Ensure the location of trays. Location of trays is described in the drawing below.

Drawing 1 Locations of tray and fixing points

Minimum width of the tray is 30 mm.

Technical Note


3. Place the module casings on the trays. Each casing is separately on its tray; but do not fix them together anyhow.

4. Install the modules to their casing and fix the module to the rack with the 4 pcs T25 screws.

Technical Note


Note

References

[1] Flexi WCDMA user manual document Requirements for Installation and Operation DN 7037979

[2] IEC standard 60297 “Dimensions of mechanical structures of the 482,6 mm (19 in) series” , parts 1-4

Documents

TN_3GBTS_HW_2007_0042