MV-16 Multiviewer
www.snellgroup.com
Operation
Issue 1 Rev 12
Page 33
© 2013 Snell Limited
3.5.3 Audio Alarms
To setup audio alarms check the Use audio channel alarm settings box and click on Setup
Audio Alarms from the Alarm tab of the Source Properties dialog.
Check the boxes to activate individual audio alarms for channels or pairs of channels.
Select the loss and over thresholds for analog and digital sources. Choose an anti-phase
threshold for channel pairs.
Select All to enable a specific alarm for all channels.
Unchecked alarms remain disabled even if Use Audio Channel Alarm Settings is checked in
the Alarm tab. Nominal threshold settings apply if individual alarms are enabled but Use
Audio Channel Alarm Settings is not checked.
If Use Audio Channel Alarm Settings is not ticked and audio loss alarm is enabled in the
Alarm tab of the Source Properties dialog, then all the channels will have their audio loss
alarms enabled with a nominal threshold set for the audio loss level.
Fig 26. Source Properties - Audio Alarms Tab.
Enable Alarms
To enable an individual audio loss or over alarm check the box in line
with the audio channel. For phase or carrier loss alarms check the
box in line with a pair of audio channels.
Audio Loss
Threshold
The level at which audio is considered lost - select values from the
analog and digital drop down boxes:
The range is 0dB to -50dB for analog and -18dBfs to -70dBfs for
digital.
Audio Over
Threshold
The level at which audio is considered over level - select values from
the analog and digital drop down boxes. The range is 0dB to 20dB for
analog and 0dBfs to -20dBfs for digital.
Antiphase Threshold
The phase values in degrees before a pair of channels is considered
to be out of phase. The range is 90° to -180°.
Table 20.
Source Properties - Audio Alarms Tab.
Note:
The effective Alarm State for individual alarms depends on the Use audio channel alarm
settings box check state and the applicable audio alarm state in the Alarm tab as explained
below.
Summary of Contents for MV-16
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