User's Manual

SDP660 – USER MANUAL TNM-U-E-0114
Jun 15 (Iss. 1.4) Page 46 MENU SCREENS
Figure 33. Mute Adjust Menu.
The default Mute Adjustment range is from 0 – 15. The mute adjustment setting will be applied to
all the radio’s analogue channels.
The SDP600 series radios have a carrier noise mute and it is recommended that a default mute
setting of 4 is used. This means that, with a setting of 4, the mute will open at the point where an
analogue signal is sufficiently noise free to be intelligible.
Other settings are as follows:
 0 No muting. Allows all decodable signals to the radio user’s audio output device
(loudspeaker, headset etc.).
 4 Normal default setting.
 8 Only reasonably strong signals will be heard.
 15 Only very strong or near perfect signals will be heard.
Use the ▼ and ▲ keys to adjust the mute threshold. Press the ‘Select’ key to save the selected
mute setting and return to the previous menu level.
Direct access to the ‘Mute Adjust’ screen from other screens can also be programmed to one of
the function buttons with the FPP.
7.9 BACKLIGHT MENU
The Backlight Menu allows the user to select the timeout period of the control unit’s backlight. The
‘Backlight’ menu is located under the Options menu.
Figure 34. Backlight Menu.
When the Backlight is enabled, the control screen will be illuminated whenever there is any user
activity. The backlight will remain on with no further user activity for the set period, after which, the
backlight will turn off.
BackSelect
Mute Adjust
4
3
2
1
0
BackSelect
Backlight
Always Off
Always On
2 sec
5 sec
10 sec