User's Manual Part 1

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“Beep” Volume Level
This section is used to set or disable the annunciation beep volume levels. These
are the various tones associated with key presses. In covert operations these can
be disabled, in other operations these are set for operator comfort. Settings are
“Off”, “Low” or “High” (example shown “beep” tones High):-
Use the Scroll keys to select the “beep” volume level required
(example shown “beep” tones level “High”):-
When the “beep” level required is displayed press the key