Edacs Operation, Power ON-OFF Volume Knob

MM-012099-001, Rev. B

8 EDACS OPERATION

8.1CONTROLS

The radio features two rotary control knobs and an emergency button mounted on the top of the radio. Push-To-Talk and option buttons are mounted on the side. The front mounted keypad has six buttons on the P5450 Scan model and 15 buttons on the P5470 System Radio.

8.1.1Buttons and Knobs

This section describes the primary function of the button and knob controls (see Figure 7-2and Figure 7-3). Other functions associated with these controls are detailed in later sections.

POWER ON-OFF VOLUME KNOB

VOICE GROUP SELECTION CONTROL KNOB

Applies power to and adjusts the receiver’s volume. Rotating the control clockwise applies power to the radio. A single alert tone (if enabled through programming) indicates the radio is operational.

Rotating the control clockwise increases the volume level. Minimum volume levels may be programmed into the radio to prevent missed calls due to a low volume setting. While adjusting the volume the display will momentarily indicate the volume level (i.e. VOL=31). The volume range is from a minimum programmed level of zero (displayed as OFF in the display) up to 40, which is the loudest level.

Selects systems or group/channels (depending on programming). This is a 16- position rotary knob.

Note: A mechanical stop, which can limit the positions accessed, is shipped with the radio but must be installed. To install the mechanical stop, remove the Voice Group Selection control knob, loosen the set screw on the Voice Group Selection control knob metal base (using a 1.27 mm hex wrench), and remove the Voice Group Selection control knob metal base. Replace the 16 channel ring with the channel stop ring located at the desired channel. Reinstall the Voice Group Selection control knob metal base, tighten the set screw, and reinstall the Voice Group Selection control knob.

EMERGENCY/ Automatically selects the pre-programmed Group/System by pressing and

HOME BUTTON holding for a programmed duration. It can also be used to declare an emergency by pressing and holding for a programmed duration. The button must be pre- programmed for either operation, but not both.

PTT BUTTON

SIDE OPTION BUTTON 1

SIDE OPTION BUTTON 2

Push-To-Talk must be pressed before voice transmission begins. In trunked mode the radio’s ID is transmitted upon depression of the PTT button.

Exits the current operation (removing all displays associated with it) and returns the radio to the selected talk group. Terminates individual and telephone interconnect calls.

Activates one of a number of programmable software options selected during PC programming. Programmable options include hi/low power settings, keypad lock, LCD contrast, LCD and keypad back lighting.