3025EMC Master Control Switching & Channel Branding
Revision 3.0.3 Page 55
Insertion Line(Ch 3/4): The 3025EMC allows for SMPTE 2020 metadata insertion onto
two different lines of the Program, Preset and Clean outputs. This
setting configures which line will be used to embed metadata
channels three and four. If this is configured as “0 (off)” then
insertion of channels three and four will be disabled.
Data Identification (DID): The SMPTE 2020 metadata de-embedders and embedders share
the same DID (ancillary data ID) and SDID (secondary ancillary
data ID). This setting configures the DID that will be used for both
reading and writing of metadata to and from the VANC of the
Program, Preset and Clean inputs/outputs. The default value for
the DID on the 3025EMC is 0x45.
VANC 1 SDID: This is the SDID for metadata channel one. This setting
configures the SDID that will be used for both reading and writing
of metadata to and from the VANC of the Program, Preset and
Clean inputs/outputs channel one. The default value for this
SDID on the 3025EMC is 0x01.
VANC 2 SDID: This is the SDID for metadata channel two. This setting
configures the SDID that will be used for both reading and writing
of metadata to and from the VANC of the Program, Preset and
Clean inputs/outputs channel two. The default value for this SDID
on the 3025EMC is 0x02.
VANC 3 SDID: This is the SDID for metadata channel three. This setting
configures the SDID that will be used for both reading and writing
of metadata to and from the VANC of the Program, Preset and
Clean inputs/outputs channel three. The default value for this
SDID on the 3025EMC is 0x03.
VANC 4 SDID: This is the SDID for metadata channel four. This setting
configures the SDID that will be used for both reading and writing
of metadata to and from the VANC of the Program, Preset and
Clean inputs/outputs channel four. The default value for this SDID
on the 3025EMC is 0x04.
Regardless of the metadata input and output settings the SMPTE 2020 metadata routing will always
take effect. The only settings that can affect VANC metadata routing are the following:
1. Insertion Line – If the insertion line is set to “0 (Off)” then metadata will not be embedded to
the Program, Preset and Clean outputs. If channels 1 and 2 are being inserted and the
DID/SDID of the metadata matches incoming metadata then new metadata will be inserted and
the existing metadata will be marked for deletion, i.e. the incoming metadata will be re-inserted
with a DID of 0x80 (mark for deletion).
2. VANC DID & SDID – These settings are common for de-embedding and insertion of SMPTE
2020 metadata. There are four de-embedders each for the PGM and PST inputs and also four
embedders each for the PGM, PST and CLN outputs. If the DID/SDID of the inputs does not
match the DID/SDID configured in the EMC-Setup configuration then the SMPTE 2020 data will
pass-through the 3025EMC untouched.
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