September 26, 2003
6881096C77-O
1-6
Introduction: Control Heads
1.3.2.1 W4, W5, W7, and W9 Controls
Power Switch (PWR): Turns the radio and its accessories on or off. The Power switch is part of the
rotary volume knob on the W4 model, a push-type switch on the W5 and W7 models, and a slide switch
on the right-hand bottom surface of the W9 model.
Mode Switch: Used for selecting modes and programming menus. The Mode switch is a rotary switch
on the W4 model and a rocker switch on the W5, W7, and W9 models. Press the right side of the rocker
switch to increase the mode number and the left side to decrease the mode number. Press and hold the
switch to scroll the mode number up or down. The mode names appear in the display window.
Volume Switch: Used for selecting the volume level, editing names, and making certain radio
adjustments. The Volume switch is a rotary switch on the W4 model and a rocker switch on the W5, W7,
and W9 models. On the pushbutton models, pressing and releasing the Volume switch checks the
volume setting. Your display will show “VOLUME_ _” and a number value (0-15). Pressing and holding
the left side decreases the volume. The number value scrolls up or down to your desired level. The
Volume rocker switch also controls the volume level of the public address (PA) and external radio
speaker (Ex Rd) options when they are enabled. The display window shows “PA VOL _ _” when public
address is on and the Volume rocker switch is pressed.
Dim Button: Used to control the brightness of the display and button backlighting. When you turn on the
system, the display comes on at the brightness level it was on before the system was last turned off.
Press the DIM button once to reduce the brightness of the display to medium level and twice for low
brightness level. Press the DIM button a third time to turn the display and button backlighting off. This is
called the “surveillance” mode.
Home Button: Used for restoring preprogrammed mode, establishing programmed mode, selecting
programming entries, etc. Press the Home button to go to the radio’s preprogrammed “home” mode. On
the W7 models, you can use the Home button instead of the Mode switch to change modes. Hold the
Home button until a beep sounds to enter the configuration state. The display shows an entry prompt.
Use the keypad to enter your new mode choice and press the Home button again. Your mode is now
changed without scrolling.
Select Button: Used to configure radio options.
Option Buttons: Used for turning options on and off, such as Phone, Scan, Emergency Call, and
Secure.
Display: The vacuum fluorescent (VF) display’s primary function is to display mode numbers, mode
names, volume level, and the status of options. It also functions as an on-off indicator for the entire
system and plays an integral role in the operator’s reconfiguration of options. The display is 8 characters
on W4, W5, and W7 models and 11 characters on the W9 model.
XMIT and BUSY Indicators: The XMIT indicator lights when the radio is transmitting. The BUSY
indicator lights when the selected channel is busy.
Scan Indicators: When scan operation detects activity on a non-priority (NON-PRI) channel, the NON-
PRI indicator light comes on. Activity on a second priority channel causes the priority (PRI) indicator to
light. First priority channel activity causes PRI to flash.
12-Button Keypad (W7 and W9): Used to change the status of options and for entering numbers.
Several keys serve multiple functions. The following buttons can be programmed to W7 and W9 control
heads. The table below describes the buttons preinstalled on the W7 model. (See the ASTRO Digital
Spectra or Digital Spectra Plus User’s Guide for a complete description of keypad operation.)
