Operating instructions

GUIDE TO INSTALLATION AND OPERATION
18 | FRS-1801
that the AFD frame accuracy or the audio processing won’t work with the minimum delay checkbox checked.
With a reference, the normal processing delay will be of 1 frame. 15 frames can be added to the frame sync
delay which depends on the timings between the input and the reference.
• Note that, in order to compensate for the processing delay of the Dolby-E decoder on the companion
audio card, the additional frame delay must be set to at least one (1) frame or more depending on the
module used.
3.4.5 The Metadata panel
Dolby tab
The Dolby metadata is used to send information
about the audio stream, e.g. program configuration,
dialnorm. Available only in HD.
Presence: The status indicator turns Green when
the metadata is detected on specified detection
line.
Detection Line: The Insertion line is used to select
on which line in the VANC the audio metadata
packet is detected. The range is from 9 to 20 in HD
and 12 to 19 or 8 to 22 for SD 525 and SD 625
respectively.
Insertion Line: Specifies on which line the packet
will be inserted at the output.
The Insertion pulldown is used to enable/disable
the insertion of Dolby Metadata, and to specify the
source:
• OFF no embedding. Incoming audio
metadata in the input will pass
through to the output.
• From ABUS embed metadata from an
external card connected on the ABUS (A1 only).
• Fixed PCM embed default PCM metadata using the specified Dialnorm value.
The Dialnorm pulldown is enabled when Fixed PCM is selected in the Insertion pulldown, and allows
selection of the Dialog Normalization Value for embedded PCM data:
• Available selections are [-20, -22, -24, -26, -27, -28, -30, -31] dB
AFD tab
AFD Mode – use the pulldown to select the operational mode for AFD processing:
Pass : All the AFD flags present at the input are passed through the card unaffected
Insert : In this mode, the AFD flags present at the input are deleted and only the one specified in the forced
region is re-inserted at the user-specified line selected with the “insertion line” drop-box
Figure 3.13 Metadata panel - Dolby tab