GUIDE TO INSTALLATION AND OPERATION
26
| LGK-3901/DSK-3901
GPI Input
•
A GPI trigger on the LGK-3901 is used to initiate and then terminate the EAS alert.
•
This GPI may come directly from the EAS receiver, automation or a manually initiated trigger.
•
The GPI trigger drives separate ‘EAS On’ and ‘EAS Off’ macros that allow the user to build a custom branding
event around the EAS crawl. The macro usually includes triggering of an AES voiceover (which will duck the
background audio) but may play a pre-recorded Easyplay audio clip instead.
Voiceover Input
•
Audio voiceover input is fed into an external AES pair on the LGK-3901.
•
The EAS audio message is up to two minutes duration and stored in the receiver until the alert is triggered.
•
Since most receivers have analogue audio outputs, the audio will first need to be converted to AES using an
external converter such as the Miranda ADC-1711 or ASD-771p.
•
The AES audio is then fed to the LGK-3901 via an external AES input pair and the audio is mixed onto the
background via a voiceover.
4.8.3.2 EAS
Crawl
Templates
LGK-3901 monitors its COM ports for a serial string received from an EAS receiver. When a message is received its
priority (high, medium, low or none) is established and the text is updated in one of the following default Easytext
crawl templates. For each video standard there are a standard set of files that correspond to the appropriate alert
level for the EAS alert with appropriate background color.
Filename
Priority
Video Standards
EASHigh.oxa
1 (high)
525i / 59.94, 625i / 50
EASHighHD1080.oxa
1 (high)
1080i / 59.94, 1080i / 50, 1080p / 59.94, 1080p / 50,
EASHighHD720.oxa
1 (high)
720p / 59.94, 720p / 50
EASMed.oxa
2 (medium)
525i / 59.94, 625i / 50
EASMedHD1080.oxa
2 (medium)
1080i / 59.94, 1080i / 50, 1080p / 59.94, 1080p / 50,
EASMedHD720.oxa 2
(medium)
720p / 59.94, 720p / 50
EASLow.oxa
3 (low)
525i / 59.94, 625i / 50
EASLowHD1080.oxa
3 (low)
1080i / 59.94, 1080i / 50, 1080p / 59.94, 1080p / 50,
EASLowHD720.oxa
3 (low)
720p / 59.94, 720p / 50
EASNone.oxa
None
525i / 59.94, 625i / 50
USO
RESTRITO
