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15.3.2.1 Slaved Mode Operation
In Slaved mode, either controller can operate the radio with no change in System and Group
settings when control is switched. Both controllers display the current information. If a key is
pressed at the idle controller, other than PTT, E, “E,” or siren and light keys as noted in
following paragraphs, a low tone will sound and the display will temporarily show DUAL on line
1 of the idle controller.
When control is switched in a Slaved mode system, all of the radio settings and states will remain
in effect that have been selected on the active controller.
15.3.2.2 Independent Mode Operation
In Independent mode, the radio system operates as if there are two radio units each controlled by a
separate control unit. Each control unit maintains its own System and Group settings that are
restored when control is switched.
The idle controller will display DUAL on line 1 to indicate that it is idle. If a key is pressed at the
idle controller, other than PTT, E, “E,” or siren and light keys as noted in following
paragraphs, a low tone will sound at the idle controller.
When control is switched in Independent mode, the idle controller will restore its own System and
Group settings instead of using the settings of the previously active controller. Any pending
operations at the active controller, other than E, “E,” or siren and light, will be terminated.
15.3.3 Emergency Operation
Either control unit (active or idle controller) can declare an emergency, provided radio has been
pre-programmed to enable emergency declaration. If the idle controller declares an emergency,
control is switched to the idle controller and any current transmission from the previously active
controller is terminated.
15.3.4 Siren & Light Control
Siren & Light control is only available from the control unit that is pre-programmed for these
functions. Typically, the control unit at the driver's location would be programmed. The control
unit that has these functions programmed can activate them regardless of whether it is an active or
an idle controller.
15.3.5 Dual Control Audio
Audio output during dual control operation is a pre-programmed function. Default operation
routes audio only to the active controller.
15.4 MULTIPLE RADIO OPERATION The M7100IP Series mobile radio can be configured to operate in multiple radio mode that permits more
than one radio to be controlled from a single control unit or control location. The radios could be different
frequency splits, trunked/conventional, etc.
In multiple radio operation, the radios continue to operate as individual radios except with a common
control unit. The control unit is used for display and control. The control unit display is shared by the
multiple radio units and, when selected, a radio can be controlled by the control unit.
For multiple radio operation, the control unit keypad must be pre-programmed for a variety of multiple
radio buttons such as radio selection and radio mute.