Pico Macom M7100 15.3 DUAL CONTROL OPERATION

Receiving a scanned group call is the same as receiving a selected group call. During the scan

hang time, if the radio was programmed for auto-select, it will transmit back in the same mode it

received the call. For example, if a clear group is entered in the scan list, it will only receive clear

calls. If the same group was available in private and entered in the scan list, it can receive clear

and private calls, provided auto-select was programmed in the radio. The user can select

transmitting on the scanned or selected group. If a group is entered in the scan list more than once

in different modes (clear, digital, private), only the first occurrence of the group will be used.

The same outside address (works similar to Channel Guard operation) must be programmed in the

transmitting and receiving radios when Aegis or ProVoice digital or private operation is enabled.

If address is not correct, the radios will not communicate.

Channel Guard encode is transmitted on analog clear channels only. Channel Guard decode will

operate on either a clear or private channel. The exception is when G-STAR signaling is used (see

G-STAR paragraph).

When G-STAR is programmed on a private channel, the radio will transmit G-STAR in clear

mode and then switch to private for the voice portion of the call. If G-STAR is sent with Channel

Guard, then both are sent in clear mode and the radio switches to private mode. Emergency G-

STAR data burst is transmitted in clear mode.

15.3 DUAL CONTROL OPERATION

The M7100IP Series mobile radio can be programmed to operate from two separate Control Units. This

permits radio operation from two separate locations in the vehicle. Dual control operation is available in

both trunked and conventional modes. Only one control unit can control the mobile radio unit at a time.

The control unit that controls the radio operation is called the active controller and the second unit is called

the idle controller.

Control can be switched to the idle controller by pressing the push-to-talk (PTT) on the

microphone associated with the idle controller. Once PTT is pressed, the radio will switch control

to the idle controller unless the active controller is currently transmitting (i.e., PTT pressed on

active controller), in which case the switch will not occur. When control is switched to the idle

controller, two short high-pitched tones will sound at the controller where PTT was pressed to

indicate that the idle controller is now the active controller and the previous active controller is

now the idle controller.

The radio can be pre-programmed for two modes of dual operation, Slaved and Independent. In

the Slaved mode, the two controllers will use the same radio System and Group settings. The

Independent mode permits each controller to have its own saved System and Group settings.