HARRIS CORPORATION TR-0054-E Manual Do Utilizador

114 

This section describes the primary function of the button and knob controls.  Refer to Figure 11-1 and 
Figure 11-2. 

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 groups/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 System/Group/Channel control knob, loosen the set 
screw on the System/Group/Channel control knob metal base (using a 
1.27 mm hex wrench), and remove the System/Group/Channel control 
knob metal base.  Replace the 16 channel ring with the channel stop 
ring located at the desired channel.  Reinstall the 
System/Group/Channel control knob metal base, tighten the set screw, 
and reinstall the System/Group/Channel control knob. 

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

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.  

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

Unsquelches the receiver and allows channel monitoring prior to 
transmission. Momentarily removes the Receiver Channel Guard 
decoding from the channel.