Samson DA-5L Manual page 17

Guided Tour - UH-5
7: Audio off-on switch - When set to the "on" position, audio signal is
transmitted. When set to the "off" position, the audio signal is muted.
Because the carrier signal remains during muting, no "pop" or "thud" will
be heard. Note that turning this off does not turn off the transmitter
power—it is simply a way to temporarily mute the transmission of audio
signal. If you don't plan on using the transmitter for extended periods,
turn off the transmitter power by using the power on-off switch (see #1 on
the previous page). As described on page 20 of this manual, setting the
UT-5 Audio switch to the "on" position operates a tone squelch feature
by causing a 38.4 kHz signal to be added to the carrier. The illuminated
word "MUTE" in the UR-5 and UR-5D display is a visual representation
of the absence of this 38.4 kHz signal. When "MUTE" is lit, either the
transmitter Audio switch is in the "off" position or the currently selected
Group and Channel do not match that of the transmitter.
8: Battery LED - This LED is an indicator of battery strength. If the bat-
tery is sufficiently strong, when the UH-5 is first powered on, this LED will
light for about two-tenths of a second and then go off.* When battery
voltage is low, this LED lights steadily, indicating that the battery needs
to be replaced.
* However, if you turn on the UH-5 within five seconds of turning it off,
the Battery LED will not light. We recommend that you always leave at
least five seconds between turning off and turning on the UH-5.
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