GUIDE TO INSTALLATION AND OPERATION
LGK-3901/DSK-3901 |
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4.8.2.5 Emergency To Air
In the event of background video failure an emergency image message can be brought to air using the Emergency To
Air feature. This may be triggered from automation (see Oxtel Automation Protocol v15), GPI, control panel (such as
the Miranda RCP-BR) or the front panel.
When Emergency To Air is selected, the most downstream keyer that is associated with a store (on the program
output channel) is faded down over 25 fields. Image V000.oxt is then loaded and faded up over a further 25 fields.
When Emergency From Air is selected, the most downstream keyer that is associated with a store (on the program
output channel) is faded down over 25 fields and the previous image is restored, but not faded up.
Note:
The emergency image must be stored in the image library under filename V000.oxt.
4.8.3 Emergency Alert System (EAS)
The Emergency Alert System feature requires the LGK-3901-OPT-EAS option.
The Emergency Alert System (EAS) is a national warning system in the United States used to notify the general public
of pending or imminent situations such as weather emergencies. It can also be used by the President of the United
States to deliver a message. All television stations in the USA are required to transmit EAS messages. Cable head-
ends are also required to transmit EAS messages on all programmed channels. For more information on EAS, see
the FCC website or the websites of the EAS receiver manufacturers.
A televised EAS alert consists of two components:
•
An on-screen crawl displaying the nature of the emergency and the regions affected in the broadcast area
•
An audio message up to two minutes in length
The EAS option provides a mechanism for the LGK-3901 to receive information from an external EAS receiver and
then generate the required video crawl and audio voiceover. The LGK-3901 provides flexible branding capabilities for
the video crawl via an Easytext template (adjustable font type/size/color, additional images, text, etc), full GPI macro
programmability and enforces keyer control so that the crawl is shown for the duration of the alert.
4.8.3.1 EAS Receivers and Interfacing
The following EAS receivers are supported:
•
Sage ENDEC Model 1822
•
TFT EAS 911
The EAS receiver model and baud rate are selected via the Configurator Tool or front panel (SETUP > SERIAL
COMMS > SERIAL PORTS > COM x > PROTOCOL / BAUD RATE).
The following external interfaces to the LGK-3901 are required:
Serial Input
•
The EAS receiver connects to the LGK-3901 over an RS232 serial connection.
•
This connection provides the EAS alert data including alert level and crawl text data.
•
EAS messages can be up to 1990 characters long.
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