E.F. Johnson Company 5300 Series Instructions d'exploitation Page 73

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ES Series Mobile Radio Operating Manual 4-7
Radio Wide Features
4.10 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.
4.11 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 the radio accessory pigtail cable.
External PA function without a siren controller is provided for cases when the siren
function is not required. This is a low level output, so some type of PA amplifier is
required. The External PA option button (or menu selection) controls 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. A button/menu function also allows
the user to turn the “Receive Audio to External PA” function on and off.
The cable, Part No. 597-5357-716.01 (Single Remote Control Head) or 597-5357-741.01
(Dual Remote) allows the radio to directly interface with a Federal Signal Omega 90
external PA amplifier without an intervening siren control box. For the mute indication to
be sent to correctly to the amplifier, the radio Aux B output must be configured for “Ext
PA Mute Inv”. This setting provides a mute signal on Aux B just like the existing “Ext PA
Mute” setting, only with opposite polarity as required by the amplifier.
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