User's Manual

Table Of Contents
Viking VM600 Mobile Radio Operating Manual 5-7
Radio Wide Features
5.10 Surveillance Mode
If the Surveillance mode is programmed, the backlight, all alert tones, and front panel
LED indicator can be disabled individually or totally, based on programming.
The transmit/receive LED indicator, display and keypad backlight, and all alert tones can
be disabled. When setting is enabled, the radio will power up in Surveillance mode with
the selected options active. A function button can also be assigned which will activate and
deactivate surveillance mode at the user’s discretion. It overrides any other programming
of these functions such as a Tone or Backlight option switch.
This feature can be turned ON and OFF by the user via menu selection or by the SURVLC
option button (if programmed). The user selected mode permanently overrides the
programmed mode if applicable.
5.11 Public Address
This feature allows a single microphone to be used for either radio or public address. An
external public address system can be connected to pin 7 of the radio accessory pigtail
cable. This is a low level output, so some sort of PA amplifier is required. The External PA
option button (or menu selection) control this feature.
In the public address mode, microphone audio is always routed to the PA system, and the
radio can be programmed so that receive audio is also routed. When the PA is enabled/
disabled, “EXT PA ON/OFF” is displayed momentarily. The radio can also be
programmed to display “EXT PA ON” continuously.
If “Ext PA Mute” is enabled by Armada, when the radio code toggles the external PA mute
line, the auxiliary B output line will also be toggled. This allows users to mute their own
PA at the same time that the radio throws the eternal PA switch.
Draft 4/29/2014