WP 505 DM3730/AM3703 Torpedo + Wireless SOM Hold-Down 
PN 1020948C 
Logic PD, Inc. All Rights Reserved. 
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Introduction 
This document provides mechanical drawings suggesting different methods for holding the 
DM3730/AM3703 Torpedo + Wireless SOM in place.  
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Force Test Results 
Based on testing a limited number of samples, the DM3730/AM3703 Torpedo + Wireless SOM 
requires 6 lb. of extraction force after one insertion when the mating connectors are the only 
means of retention. After 15 insertion and extraction cycles, the extraction force is reduced to 
4 lb. See drawing 1020632 at the conclusion of this document. 
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Hold-Down Methods 
3.1     Logic PD Designed Hold-Down Clip 
Logic PD has designed a hold-down clip that is included with the Zoom DM3730 Torpedo 
Development Kit. The clip provides a method for securing the DM3730/AM3703 
Torpedo + Wireless SOM with minimal impact on the surrounding space. See drawing number 
1020633 and 1020244 at the conclusion of this document. 
3.2     Enclosure 
An enclosure can be built around the DM3730/AM3703 Torpedo + Wireless SOM and custom 
baseboard. See drawing number 1020634 at the conclusion of this document. 
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Summary 
This white paper provides several methods for holding the DM3730/AM3703 Torpedo + Wireless 
SOM in place. The drawings included with this document offer examples of how these methods 
could be implemented. Because every end product has unique requirements, it is outside the 
scope of this document to provide a specific retention method for every scenario. Determining the 
best solution for the end product is the responsibility of the designer, although Logic PD can help 
with design solutions or reviews. Please contact Logic PD
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 for more information. 
                                                       
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