Tuner Settings Screen - DEVA Broadcast DB7000 Maintenance And Operating Instructions

TUNER SETTINGS SCREEN

The Tuner Section gives full control over the two RF Antenna Inputs, Tuner and Audio
Processing settings. These settings provide all the needed adjustments to the algorithm which
DB7000 demodulates and manipulates the signal.
'Backup Station' section – This functionality will help prevent audio loss in case a problem
with the main station occurs.
Switch to backup station will be performed once an alarm event is registered. In order for this
to happen, the switch option for the relevant alarm event should be selected. DB7000 will stay
on the predefined backup frequency for the user-defined time and will return back to the main
station upon it expires. The backup hold time is from 10 to 60 minutes. If the alarm conditions
are still present, the alarm will be re-triggered and the unit will switch to the backup station again.
The procedure will be repeated until the main station's signal is recovered. The switching time is
bounded with and depends from the alarm trigger time that is set. For further information on the
alarm trigger time and how to set it up, please refer to the "Alarms" subsection.
'Alarm Active Action' section - In this section are defined the actions to be undertaken in
case of an RF, Audio, MPX, Pilot or PI Protection alarm is generated. The following options for
reaction are available - Audio Mute, MPX Mute, Switch to Backup Station. The applied settings
are applicable for both – the main and backup stations, the option "Switch to backup station"
excluded as it is applicable only for the main station.
NOTE: For further information on how to set the Alarms refer to "Alarms Settings Screen" on
page 62.
Average and Peak Adjustments section is used for setting of the indicators response times.
Attack and Release times set the rate in which the indicators' level will change in response
to the signal. For most of the applications (including this one), the recommended attack time is
shorter than the release time.
Peak-hold time – Permits retaining and displaying the peak value reached by the signal for a
period of time predefined by the user.
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