Operating Manual

4-6 5100 ES Models II/III Portable Radio Operating Manual March 2008
Radio-wide Features
The new level is flashed in the display as either “Hi Power” or “Low Power”. If selectable
power is not permitted on the current channel, “Fixed Low” or “Fixed High” is flashed and
no change occurs. The selected power level for a channel or system is permanent until it is
manually changed again. The low power mode may be automatically selected during a low
battery condition (see Section 3.4.2).
4.7 Alert Tone Select
The various alert tones that sound are described in Section 2.5. These tones can be turned
on and off if the Alert Tone option switch or Tones menu parameter is programmed. When
all tones are off, “Tone Off” is momentarily displayed, and when all tones are on, “Tone
On” is momentarily displayed. If this switch or menu parameter is not programmed, tones
are fixed in the on or off mode by programming. If the Surveillance mode is programmed
(see following), tones are totally disabled.
The Alert Tone volume can be adjusted relative to the volume control setting. This is done
by programming and also by the user if the Tone Volume Adjust option button or menu
parameter is programmed. Relative levels of –170 to +170 can be set with “0” the default
setting. A minus value decreases the tone volume and a plus value increases it. The user
adjusted level permanently overrides the programmed level if applicable.
4.8 Surveillance Mode
The Surveillance mode totally disables the backlight, all alert tones, and front panel LED
indicator in all operating modes. The radio can be fixed in this mode by programming or it
can be turned on and off by the user if the Surveillance Mode option button or menu
parameter is programmed. The user selected mode permanently overrides the programmed
mode if applicable. To provide a transmit indication when the front panel LED is disabled,
the icon is displayed (see Section 2.4). This icon is displayed only in the surveillance
mode.
The transmit/receive LED indicator, display and keypad backlight, and all alert tones can
be disabled in PC Configure. When setting is enabled, the radio will power up in
Surveillance mode with the selected options active. A function button can also be assigned
which will activate and deactivate surveillance mode at the user’s discretion. It overrides
any other programming of these functions such as a Tone or Backlight option switch.