Motorola APX Mobile Instruction Manual - Page 20
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2-4
2.4.3
PTT Operation
When the PTT button is pressed, only the Selected Radio will key up. A Radio Swap will not be
allowed, when pressing PTT. While the radio is unselected and it receives transmit request from a
third party device, the request will be ignored.
NOTE: a) Simulcast operation, where both radios transmit simultaneously, is not supported.
b) If the APX Dual-Radio is on "In-Band" combination, and the selected radio is transmitting,
the unselected radio's speaker is muted.
c) If the APX Dual-Radio is on "Cross-Band" combination, and the selected radio is
transmitting, customers can configure the unselected radio's speaker to either mute or
unmute.
2.4.4
Emergency Operation
Emergency is able to launch on the selected radio, or on a pre-defined Emergency Radios (either
Primary Radio or Secondary Radio). A codeplug field is provided to configure which radio will launch
emergency, with three options as follows:
a. Selected Radio: Emergency shall launch on the currently Selected Radio, and cannot be
launched on both radios simultaneously. Thus, it is required to exit Emergency on the first
radio, in order to launch Emergency on the other radio. A long press of the emergency
button can only exit emergency, while the emergency radio is selected.
b. Primary Radio: Emergency will launch on the Primary Radio, regardless of which radio is
selected. If the Primary Radio is not selected, Radio Swap will automatically occur to
ensure it is selected. A long press of the emergency button can exit emergency,
regardless of which radio is selected.
c. Secondary Radio: Emergency will launch on the Secondary radio, regardless of which
radio is selected. If the Secondary Radio is not selected, Radio Swap will automatically
occur to ensure it is selected. A long press of the emergency button can exit emergency,
regardless of which radio is selected.
Radio Swap is allowed while the radio is in the Emergency Call Mode, but Radio Swap is inhibited
when the radio is in the Emergency Alarm, Emergency Hot Mic, or Silent Emergency State.
2.4.5
Radio Wide Features
Siren/PA, Light Bar, Gun Lock, Aux Control, DIM and Day/Night Mode are radio wide features.
Regardless of which radio is selected, customers can launch these features by pressing the related
buttons. The Radio Swap operation will not change the status of these features.
The programmable button configuration of radio wide features shall be the same on both radios.
2.4.5.1 Siren
• Siren can only connect to Primary Radio. No matter which radio is selected, Siren/PA can be
launched if Siren/PA button is pressed.
• External radio only works on Primary Radio, it can only route the Primary Radio audio to siren
speaker.
2.4.5.2 Light Bar
• Light Bar only connects to Primary Radio.
• Light bar is accessible regardless of which radio is selected.
July 30, 2014
APX Mobile Dual-Radio Operation: Feature Operation
MN000770A01-AA