LRAD-100X
GENASYS INC.
Manual Part No.: 106457-00 Rev E
16
How to Limit Feedback
:
•
Adjust the volume: Lower the LRAD’s volume until feedback is negated.
•
Avoid reflections: If the output from the LRAD is bouncing off a solid object such as a
building and making its way back to the microphone, feedback will occur. Try
repositioning the LRAD or the microphone to prevent feedback.
•
Maintain your distance: The farther away the microphone is from the LRAD, the less
feedback you will experience. Only use the microphone behind the LRAD, keeping it out
of the main acoustic beam.
•
Shield the microphone: If possible, shield the microphone and the microphone operator
from the LRAD’s acoustic output to reduce feedback. Stand behind a physical barrier, or
inside a guard house or ship’s bridge. You may also use your free hand to cover the area
surrounding the microphone to attempt to limit feedback.
•
Use the PUSH TO TALK button to your advantage: Releasing the PTT button on the
microphone immediately after speaking will limit feedback. Pressing and holding the
PTT button for longer than necessary may lead to feedback.
15.2 Recording Audio
When necessary, the microphone can be used to record, store, and playback a message of
approximately one minute in duration.
To record and playback audio with the microphone, reference Figure 10 on the following page
and perform these steps:
1.
Press and hold the RECORD button (item 2 in Figure 10).
2.
While holding the RECORD button, press and hold the PLAY button (item 3 in Figure 10).
3.
The recording/playback indicator LED (item 4 in Figure 10) will light green to indicate that
the unit is recording.
•
The unit will record as long as the RECORD and PLAY buttons are held down and as
long as there is available storage space in the internal memory.
4.
Speak your message into the microphone element (item 5 in Figure 10) and release the
RECORD and PLAY buttons when done speaking.
5.
Press and release the PLAY button to initiate playback of the recording. The
recording/playback indicator LED will flash once when the recording has finished playback.
6.
Press and release the PLAY button again to halt playback of the recording.
