5.7.
Auxiliary Timecode
An additional (Auxiliary) timecode input functionality is available. The original timecode from the source
is still carried through to the output. If applicable given the conversion the card is performing, the
timecode is translated from VITC to ATC or vice-versa.
The Auxiliary timecode source can be selected (Aux_TC_SRC) from any video source on the card. Like
the original timecode, it is translated from VITC to ATC or vice-versa if applicable, so the type of
timecode matches the output format of the card. The timecode is delayed according to the Aux_TC_DLY
setting.
Because devices need to be able to distinguish between the two timecodes, devices need to be able to
handle both the timecodes. When VITC is inserted into an SD signal, both timecodes can be inserted into
different lines. For instance, when SD625 is set as the output format, the original timecode gets inserted
into the line set by VITC_Ln_625. The auxiliary timecode is inserted into the line set by Aux_Ln_
625.When SD525 is set as the output format, both timecodes are inserted according to settings VITC_
Ln_525 and Aux_Ln_525.
When the output is set to any HD or 3Gb/s format, the timecode is inserted as an ATC packet. The user
can select whether to insert the timecode packet as LTC, or as VITC. This is controlled by setting ATC_
Emb_Sel for the original timecode, and setting AUX_Emb_Sel for the auxiliary timecode. Because these
are inserted into different lines, devices can distinguish between the two.
The EVS devices can be set to de-embed either or any of the two, both for the original timecode input
and the auxiliary timecode input. This can be set by AUX_Dem_Sel and ATC_Dem_Sel. When receiving an
SD signal, the input line can be set separately for both normal timecode and auxiliary timecode, by VITC_
Ln_In and Aux_VITC_Ln_In. The other applicable timecode settings, such as VITC_Ln_Ctrl and VITC_Ln_
Dup control both the normal timecode insertion as well as the auxiliary timecode insertion.
Setting
Description
Aux_TC_SRC
With this setting you can set the timecode source of the second timecode
inserter. Can be SDI-1, SDI-2, Analog input or Off.
AUX_Dem_Sel
Auxiliary ATC source de-embed selection. Previously, the first ATC found in a
field would be transcoded to the output. Now, the user can select whether to
de-embed LTC, VITC or the first ATC found.
AUX_Emb_Sel
Auxiliary ATC destination embed selection. Previously, timecode was
transcoded into VITC. Now the user can select whether to transcode to VITC or
LTC.
Aux_VITC_Ln_In
Auxiliary VITC read line. The Auxiliary timecode readline can differ from the
normal VITC read line. This means, that from an SD source, two different
timecode lines can be transcoded to the output.
Aux_Ln_625
Here you choose the auxiliary timecode line number in which you are going to
insert VITC when the output is SD625.
Aux_Ln_525
Here you choose the auxiliary timecode line number in which you are going to
insert VITC when the output is SD525.
INSTALLATION AND OPERATION MANUAL
Synapse GXG100 | 5. Settings Menu |
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