A.W. Communication Systems DRC1 Configuration Handbook - page 15
Talk Through Mode
This parameter sets how talk through is achieved. The options are local or remote. In local
mode the audio for the transmitter is derived from that received by the DRC1 on its input line.
When the TT key is selected, the DRC1 will operate the PTT signal when the incoming VOX
is triggered, and also outputs to line the received audio. In remote TT mode, the base station
has to be configured to provide the talk through path, and talk through is enabled by an FSK
supervisory message to the remote site (Simoco) or Tone burst (Motorola).
Press
[menu
] to select this menu, then use the scroll up/down keys until the desired value is
against the chevron. Press [
menu
] to select then [
clear
] twice to store and exit.
Night Service Lockout, (timeout)
This menu item sets how long the TT path remains open when triggered by the night service
facility. Press [
menu
] to select this item, then using the numeric keys set the number of
seconds. Press [
menu
] to store your entry then [
clear
] twice to exit the menu system. Entering
00 renders the timer ineffective.
Teleconnect Lockout, (timeout)
This items determines how long the telephone to radio connect will remain linked. This will
automatically disconnect a teleradio link when the timer elapses. Press [
menu
] to access, then
using the numeric keys enter the number of seconds for the timer. Press [
menu
] to store your
entry, then [
clear
] twice to exit the menu facility. Entering 00 renders the timer ineffective.
Group Connect Timer
Timer used to automatically cancel group connects.
Line Proving Signal.
In both Simoco and Motorola line signalling, the controller can be set to send a tone or FSK
data burst to the remote site when the system is idling. The period of repetition is about one
per minute. This menu item permits the programmer to switch line proving on or off. In some
systems, failure to receive the line proving tone will cause the remote base station to go into
TT mode (line fail talk through). Press [
menu
] to select this item, then use the scroll up/down
to indicate on or off. Press [
menu
] to make your selection, then press [
clear
] twice to store and
exit the menu system.
Background Mute.
This function is used when the DRC is controlling a switch (either DRC32 or micro). The
function changes the way audio from the switch is monitored.
When “SET” an operator will hear audio from all the channels in his elected group until a
channel is selected. Once a channel is selected, only the audio from that channel will be heard
by the operator.
When “Cleared” the operator will hear audio from all the channels in the elected group and a
12dB increase will occur on selected channels.
In either state, selective calling will continue to operate normally.