E F Johnson Company 2425333 Benutzerhandbuch
5-7
Conventional Features
Repeater talk-around can be selected if the RTA option switch is programmed. When talk-
around is enabled by this switch, “RTA ON” is flashed in the display, and when it is
disabled, “RTA OFF” is flashed. This feature remains enabled during scanning, and
changing channels or turning power OFF does not change the selected condition. Talk-
around is available on conventional channels only. The Talkaround capability can be
Disabled on a per-channel basis, requiring the user to use the infrastructure if disabled.
(Radio-to-Radio communication is not allowed.)
around is enabled by this switch, “RTA ON” is flashed in the display, and when it is
disabled, “RTA OFF” is flashed. This feature remains enabled during scanning, and
changing channels or turning power OFF does not change the selected condition. Talk-
around is available on conventional channels only. The Talkaround capability can be
Disabled on a per-channel basis, requiring the user to use the infrastructure if disabled.
(Radio-to-Radio communication is not allowed.)
5.8
Displaying Transmit / Receive Frequency
If the DISP option switch is programmed, it can be used to display the channel frequency
in megahertz. Pressing this switch toggles between displaying the standard channel alias
and the frequency. The receive frequency is displayed while receiving and the transmit
frequency is displayed while transmitting. This feature is available on conventional
channels only.
in megahertz. Pressing this switch toggles between displaying the standard channel alias
and the frequency. The receive frequency is displayed while receiving and the transmit
frequency is displayed while transmitting. This feature is available on conventional
channels only.
5.9
Emergency Alarm and Call
Emergency Alarms and Calls are separate functions that can be individually enabled or
disabled on each analog and P25 conventional system. The Emergency option switch is
required for these functions. Emergency Alarms and Calls are transmitted on the global
(radio wide) emergency zone/channel if one is programmed and a smart console with
message receiving capabilities is used. If it is not programmed, the emergency is
transmitted on the selected channel. The emergency programming of the system to which
that channel is linked controls the emergency operation.
disabled on each analog and P25 conventional system. The Emergency option switch is
required for these functions. Emergency Alarms and Calls are transmitted on the global
(radio wide) emergency zone/channel if one is programmed and a smart console with
message receiving capabilities is used. If it is not programmed, the emergency is
transmitted on the selected channel. The emergency programming of the system to which
that channel is linked controls the emergency operation.
5.9.1
Emergency Alarms
An emergency alarm is a special transmission that alerts a dispatcher of an emergency
situation. It is sent automatically by pressing Emergency option switch. The system to
which the emergency channel is linked must have Emergency Alarms enabled. If it does
not, Emergency Alarms are disabled. Emergency alarms and calls can be received on
smart consoles with message receiving capabilities.
situation. It is sent automatically by pressing Emergency option switch. The system to
which the emergency channel is linked must have Emergency Alarms enabled. If it does
not, Emergency Alarms are disabled. Emergency alarms and calls can be received on
smart consoles with message receiving capabilities.
In the P25 conventional mode, a special P25 emergency data transmission is sent, and in
the conventional analog mode, an DTMF emergency ID is sent. Refer to Section 5.12.3 for
information on the MDC1200 Emergency Alert.
the conventional analog mode, an DTMF emergency ID is sent. Refer to Section 5.12.3 for
information on the MDC1200 Emergency Alert.