David Clark 40992G-20, Руководство пользователя

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5 of 10
19605P-23 (07-20)
Figure 2: Positioning the Microphone
Communication
The user will hear his own voice (side-tone) only when the belt station is linked to a gateway,
assuming the microphone programming for intercom on the chosen selection is either hot-mic or
VOX; if the selection for mic function for intercom was programmed for PTT, the user will hear
side-tone when the PTT is depressed . Side-tone provides feedback for the user to know he is
connected. In general, if you can hear your own voice, the other users can hear you as well.
Range
The unimpeded line-of-sight range of a belt station and a gateway should be at least 500 ft
(150m). If you are in an environment with metal or concrete walls, this range could be reduced.
If the belt station enters into a "fringe" reception area, a brief sequence of three beeps will be
heard in the headset. This is to serve as a warning of a possible disconnection if conditions are
not improved. When possible, the user should attempt to regain line-of-sight contact with the
gateway. When the belt station travels out of range of the gateway, a voice prompt will indicate
that the connection has been lost. To reconnect, simply move back into range and connection
with the gateway will automatically be reestablished, also noted by a voice prompt.
PTT
The PTT button allows the user to activate the headset's microphone momentarily while
depressed. The actual microphone transmit function (e.g., radio transmit or intercom) will
depend on the specific programming for the chosen selection on the belt station. For more
information see the Operation Digital Intercom manual (19549P-31). (see section on User
Interface to review programming options).
Selections
The U9110-BSW(EU) has the capability of switching between four “selections”. These selections
are defined within the Digital Intercom System graphical user interface and can be configured to
provide different communications paths between users and radios, as well as the behavior of
auxiliary audio devices connected to the system.