Grass Valley Imagestore 750 v.3.0.1 - Manual (Page 51)

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Imagestore 750
User Manual
You can generate .oxa Bugclock files using the Clock Builder application (available on the MCS
CD).
‘Emergency to Air’ and ‘Emergency from Air’
If a background video failure occurs, an emergency image message can be brought to air using
the ‘Emergency to Air’ feature. The message can be triggered by automation, a GPI event, from a
control panel, or from the Imagestore 750’s front panel.
When ‘Emergency To Air’ is selected, the most downstream keyer that is associated with a store
(on the program output channel) fades 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) fades 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.
Emergency Alert System (EAS)
 The Emergency Alert System feature requires the IS-750-EAS option.
The Emergency Alert System (EAS) is a national warning system in the United States that notifies
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 Imagestore 750 to receive information from an
external EAS receiver and then generate the required video crawl and audio voice-over. The
Imagestore 750 provides flexible branding capabilities for the video crawl, using an Easytext
template, such as adjustable font type, size, and color, additional images or text, etc. It provides
full GPI macro programmability and enforces keyer control so that the crawl is shown for the
duration of the alert.
 Note: For EAS messages (a.k.a straps) to appear correctly on DSK 4, the fourth store must be
allocated sufficient memory. See Setup > Stores > Stores Memory on the Images-
tore 750’s front panel.
EAS Receivers and Interfacing
The Imagestore 750 supports the following EAS receivers:
• Sage ENDEC Model 1822.
• TFT EAS 911.
Select the EAS receiver model and Baud rate in the Imagestore 750 Configurator or at the
Imagestore 750’s front panel. Choose Setup > Serial Comms > Serial Ports > Com
x > Protocol / Baud Rate.