User's Guide

Best Practices and Troubleshooting
Best Practices
The items in the following sections are considered Motorola Solutions best practices.
Note: These best practices are not required. They are provided to help you have
the best experience possible with your HiFi Microphones (HiFi Mics).
Installation best practices
Keep the following best practices in mind when you install a HiFi Mic in your vehicle:
l Use a short cable (3-foot) when you connect the HiFi Mic base to the 4RE DVR; keeping the cable
short helps maintain audio quality.
l Use the antenna that you received from Motorola Solutions with the HiFi Mic. Using a different
antenna can compromise wireless performance and audio quality.
l Install the antenna horizontally in the upper right-hand corner of the windshield (as you look out the
windshield) and 2.5 inches away from the windshield's edge away from any metal.
l If you use two HiFi Mics in your vehicle, install the antennas horizontally in the upper right-hand
and upper left-hand corners of the windshield to keep them as far apart as possible to minimize the
potential for interference when two mics are in use.
l Finger-tighten the SMA connector when you connect the antenna to the base. Using hand tools
can damage the connector.
Usage best practices
Keep the following best practices in mind when you use your HiFi Mic:
l Power off the transmitter before you put it in the base to charge.
l Avoid touching the charge and sync contacts on the base and transmitter with your bare hands.
l If you have two HiFi Mics in your vehicle but you are only using one of them, dock the unused
transmitter in its vehicle base. The unused empty base can interfere with the HiFi Mic that is being
used.
l Store the transmitter in a cool environment and with 40% or less of battery state of charge.
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HiFi Microphone
HiFi Microphone User Guide
WGD00181, Revision A