Test of the Emergency Broadcast System

Help and support for HDHomeRun DVR and HDHomeRun software for Windows 10, Mac, Android, XBox, etc.
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leerandall
Posts: 494
Joined: Sat Mar 16, 2013 5:49 pm
Device ID: 131102D9, 1326E147

Test of the Emergency Broadcast System

Post by leerandall » Sat May 11, 2019 11:05 am

I'm just curious. I just had my Win7 machine running WMC on my desktop and HDHR running on my Shield connected to a TV within sight of each other. WMC was interrupted with a test of the EBS, but HDHR was not. Is HDHR supposed to be interruptible by the EBS signal as most TVs are?

dmbmke
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Re: Test of the Emergency Broadcast System

Post by dmbmke » Sat May 11, 2019 7:18 pm

Were the devices on the same station? If not, it just means that the stations didn’t run a test at the same time.

The EAS decoder is at the station and then broadcasts the required message instead of their scheduled programming. It does not control your device directly.

leerandall
Posts: 494
Joined: Sat Mar 16, 2013 5:49 pm
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Re: Test of the Emergency Broadcast System

Post by leerandall » Sat May 11, 2019 10:22 pm

Yes, they were both on the same station at the time of the EBS test. WMC showed the test, HDHR app on Shield did not.

foxbat121
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Re: Test of the Emergency Broadcast System

Post by foxbat121 » Sun May 12, 2019 1:11 pm

WMC has a tendency of leave the EBS message on for a long time, long pass the time that the station has turned off the testing. It even shows up in recordings when you play it back later. So, it is possible that your Shield was turned on after the testing is over.

jasonl
Silicondust
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Re: Test of the Emergency Broadcast System

Post by jasonl » Sun May 12, 2019 1:44 pm

EAS messages that are carried by broadcast stations are just part of the regular audio/video and would be seen by every device no matter what. EAS messages transmitted by a cable provider go through a different path via the CableCARD. The DRI system used by WMC has a function where it can register to receive those messages, and WMC will parse EAS messages and act on them based on Microsoft's interpretation of the standard. The HDHomeRun app/DVR do not use DRI and will not receive those messages.

leerandall
Posts: 494
Joined: Sat Mar 16, 2013 5:49 pm
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Re: Test of the Emergency Broadcast System

Post by leerandall » Sun May 12, 2019 5:55 pm

jasonl wrote:
Sun May 12, 2019 1:44 pm
EAS messages that are carried by broadcast stations are just part of the regular audio/video and would be seen by every device no matter what. EAS messages transmitted by a cable provider go through a different path via the CableCARD. The DRI system used by WMC has a function where it can register to receive those messages, and WMC will parse EAS messages and act on them based on Microsoft's interpretation of the standard. The HDHomeRun app/DVR do not use DRI and will not receive those messages.
Thanks for the explanation.

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