Installation OEM6 Family Cards
Chapter 2
OEM6 Family Installation and Operation User Manual Rev 12
33
Mounting the Printed Circuit Board
The OEM6 family cards are OEM products and the printed circuit board is provided without a housing
structure. This allows flexibility in creating a mounting environment to suit particular product and market
requirements.
The mounting and enclosure should provide for the following:
•
Mounting of external connectors
•
Protection from hostile physical environments (rain, snow, sand, salt, water, extreme temperatures,
etc)
•
Protection from ESD (see
Appendix J, Electrostatic Discharge (ESD) Practices
See
Appendix A, OEM615 Technical Specifications
Appendix C, OEM617D Technical Specifications
OEM628 Technical Specifications
Appendix E, OEM638 Technical Specifications
page 162 for mechanical drawings of each card.
When installing cards, ensure all standoffs are properly installed and the mounting location is
level.
The amount of board deflection (bow and twist) must not exceed 0.75% of its characteristic
dimension. For example, on the OEM615, which is 71 mm long and 46 mm wide, the deflection
along the length must not exceed 0.53 mm and the deflection along the width must not exceed
0.34 mm.
The OEM6 receivers equipped a high vibration TCXO can be mounted in a number of ways.
The primary method is to use isolation mounts. This has been confirmed, via testing, to be an
excellent method of mounting that will ensure that the product meets the 20G random vibe
performance requirement. The recommended 6mm, outer diameter, Vibration Isolation Mount
can be ordered from J.W. WINCO. Part Number, GN 351-6-8-M3-ES-55.
The OEM Integrator is responsible for ensuring compliance of the final product with the
regulatory bodies for those intended markets.
For proper grounding and mechanical integrity, the OEM615, OEM617 and OEM617D are
mounted with four screws when used in a custom assembly.
For proper grounding and mechanical integrity, the OEM628 and OEM638 are mounted with
six screws when used in a custom assembly.