User's Manual

User’s Guide – SDC-MSD40NBT
25
SDC-MSD40NBT_UsersGuide
© 2011 – 2012 Summit Data Communications, Inc. All rights reserved.
Mounting
Three through-hole mounting with a 60-pin connector. Summit recommends a 1.5 mm bushing with a
conductive mounting screw to connect the exposed ground pads of the radio circuit board to the host
ground plane. A 1.5 mm conductive bushing with a maximum OD of 3.5 mm will maximize grounding of
the radio and help to reduce emissions from the radio circuit board.
Figure 11: Mounting Recommendations
RF Layout Design Guidelines
The following is a list of RF layout design guidelines and recommendation when installing a Summit radio
into your device.
 Do not run antenna cables directly above or directly below the radio.
 Do not place any parts or run any high speed digital lines below the radio.
 If there are other radios or transmitters located on the device (such as a Bluetooth radio), place the
devices as far apart from each other as possible.
 Ensure that there is the maximum allowable spacing separating the antenna connectors on the
Summit radio from the antenna. In addition, do not place antennas directly above or directly below the
radio.
 Summit recommends the use of a double shielded cable for the connection between the radio and the
antenna elements.
 Summit has provided three plated mounting holes that can be used for grounding. When additional
ground plane is required, you may use some or all of these grounded mounting holes.
 Use proper electro-static-discharge (ESD) procedures when installing the Summit radio module.