User's Manual

Table Of Contents
2-2 Viking™ VP600 Portable Radio Operating Manual
Controls and Display
Microphone - The microphone is located behind the small opening at the top right of the
front panel shown in Figure 2.1. For best results, hold the radio 2-3 inches from you mouth
and speak at a normal conversational level. Do not shout since it distorts your voice and
does not increase range. Make sure that the PTT (push-to-talk) switch is pressed before
you begin to speak and released as soon as the message is complete.
Display - This is a graphical LCD (Liquid Crystal Display). The display backlight can be
programmed to turn on when any key/button is pressed (or pressed and held, depending
upon programming), or when the Backlight option button is pressed or menu parameter
selected (see Section 3.5, "Backlight").
Nav Pad Up/Down Buttons- Select zones when multiple zones are programmed (see
Section 3.3, "Zone and Channel Select"). Pressing the up button selects the next higher
number and pressing the down button selects the next lower number. These buttons also
provide up/down select in the menu mode and in other modes when up/down select is
required.
Nav Pad Left/Right - Nav Pad Left cycles through soft buttons to the left and Nav Pad
Right cycles through soft buttons to the right, if soft buttons are programmed. If soft
buttons are not programmed, then Nav Pad Left/Right can be used as programmable
option buttons.
(Clear) - In menu mode (see Section 4.4, "Menu Mode"), functions as a step back and
exit button. If menu mode is not used, it is a programmable option button.
(Menu) - Selects the menu mode when that mode is enabled by programming. Also
functions as an Enter or Select button in the menu and other modes. If menu mode is not
used, it is a programmable option button.
, - Programmable option buttons.
DTMF Keypad - The full keypad DTMF models include the 12 keys required to dial
telephone and unit ID numbers.
Speaker - The radio speaker is located at the top of the front panel. When a speaker/
microphone is used, it is automatically detected when the Opt Sel 1 line of the accessory
connector is pulled low. The logic then automatically disables the internal speaker.