Grass Valley DAP-1781 - Manual (Page 38)

GUIDE TO INSTALLATION AND OPERATION
38 | DAP-1781
4.4 Metadata
4.4.1 Input Status
Three icons are dedicated to the status of each
metadata input. A green icon indicates the presence
and validity of a Metadata bit stream.
The RS-422 input is not available on the single
width rear panels DEC-75-SRP and DEC-110-
SRP, the Decoder input implies the presence of a
Dolby Decoder optional card and the A-BUS input
requires a XVP-1801 video card connected
through the A-BUS cable.
The A-BUS input is not available when the DAP-
1781 is in Slave 2 of video Card - Serial Mode,
refer to A-BUS tab.
4.4.2 Source
The Metadata path appears in green, with an
automatic selection between the Primary and the
Backup source.
The activation of the Generator and the Hold
function are manual.
The Generator allows the creation of a complete,
specific set of Metadata.
Activation of the Hold function will freeze the
Metadata values used for the output bit stream.
The Metadata output is fed to the RS-422 output, not
available with rear panels ENC-75-SRP and ENC-
110-SRP, to an optional Dolby Encoder card and to
a video card via the A-BUS link for embedding.
4.4.3 Control tab
Through Coarse and Fine adjustments, a fixed delay can be applied to the input Metadata bit stream. It is
useful when the audio signal processing, like watermarking, is applied to the audio signal outside the DAP-
1781. The delayed Metadata bit stream will stay properly timed with its associated audio signal.
Presets
Ten user Presets, named META1 to META10, are reserved for Metadata settings. The Save Input button
will copy the input Metadata bit stream to any Meta Preset or to the Generator. The Load to Generator will
copy the Factory or a Meta bit stream into the Generator. The Save Generator will copy the Generator to
any User.
Note that a Load to Generator, META1 to META5, action will be applied any time a Load User Presets,
User1 to User5, occurs.
See the table in Appendix B at the end of this document for the Factory default values.