Digital Alert Systems DASDEC-II MANUAL - Manual (Page 48)

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Digital Alert Systems: DASDEC User Manual
Main Audio and Aux Audio Tables
The interface tables for Main and Auxiliary (Aux 1 And Aux 2) audio operate much like the Front Panel
Speaker table described above. Auxiliary Audio is optional and thus may not appear. It is possible to have
two auxiliary audio interface tables. Also, Auxiliary Audio provides stereo output volume level control.
Otherwise, the same audio tests and alert audio toggles are presented.
Forwarding/Encoder Output Enable & Main Audio / Passthrough Audio
The Main Audio table has a special checkbox that controls the state of the Main analog audio pass-through
circuit. This circuit controls analog audio input/output pass-through on the screw terminal connector on the
back of the DASDEC. Pass-through audio allows external balanced audio to be passed through the
DASDEC and interrupted during an EAS audio activation.
If the Main audio output is to be tested by playing a file or a tone, or if pass-through audio is not needed, the
Main Analog Audio Passthrough toggle should be disabled. This will enable full time output of DASDEC
internal audio. Otherwise, check to enable analog audio pass-through. When Pass-through is Enabled, the
only time DASDEC generated audio is played on the Main audio output port is during an EAS alert.
Tests: To test the Main and/or Auxiliary Audio outputs, attach speakers to the DASDEC audio device output
ports and run the various tone test buttons. These tests allow the DASDEC to play each of the two single
tones that comprise the dual-tone EAS Attention Signal. The EAS Attention signal and WAV files can be
played as described above for the front panel speaker interface table.
Setup > Audio > Audio Output Levels/Tests web page, bottom sections
Alert Forwarding and Alert Origination: The Main and Auxiliary Audio tables display an active hyperlink
showing whether the forwarded and originated alert audio is output on the audio device. To make changes
to these states, click the text link to jump to the correct Decoder or Encoder Audio setup page and modify
the associated checkboxes.
5. Upload Audio .WAV file to DASDEC Server
The interface at the bottom of the page allows Wav and MP3 files to be uploaded into the DASDEC. Click
to locate the file on the host computer file system, then click . MP3 files will be
converted automatically into a WAV file on the DASDEC. Uploaded audio files are available for tests as well
as for encoding and manual forwarding.
4.6.1 Radio Tuners
The standard DASDEC supports three internal radio receivers. These can be configured, tuned, and monitored
on the Radio Configuration page. Each radio can be programmed to any AM, FM, or NOAA frequency.
NOTE: External antennas are usually required for proper radio reception. Antennas are
connected to a coax connector on the back of the DASDEC II. Antennas can be
purchased through third party vendors. For recommendations, contact Digital Alert
Systems.