Specifications

HDC-1801 HD Downconverter & DA with Analog Monitoring Output
Guide to Installation and Operation
HDC-1801 Page 9 of 17
TC / CC / WSS
The current ARC status is shown in the two preview
windows at the top of the panel. Click on the ARC
(Aspect Ratio) option to make changes
Time Code
Time Code Presence: the icon is Green if time code
is currently being detected in the input signal,
and grey if not.
Insertion: use the pulldown list to select whether
time code will be inserted in the output.
Insert Line: use the pull-down list to select the line
into which time code will be inserted when
insertion in ON.
Duplicate: from the pulldown list, select whether
Duplication is ON or OFF.
DUPLICATION inserts a second copy of the
time code two lines after the Insert Line, when
possible. For example, if the Insert Line is 16
and duplication is ON, lines 16 and 18 will both
contain the same time code.
720p Tracking: from the pulldown list, select
whether 720p tracking is ON or OFF (available
only when input is 720p50 or 720p59.94).
720p tracking is a way to lock the field
sequence of the downconverted interlaced
video output with the input time code. Since
there is no “field” in a progressive format such
as 720p, enabling this option is the only way to
ensure that the output video will follow a specific
field sequence. Note that a discontinuity in the
input time code sequence can cause a break in
the output video signal, so this option should
only be used when tracking a field sequence is
a major issue.
CC / WSS
CC / WSS Presence: the icon is Green if Closed
Captioning (for 59.94 Hz signals) or Wide
Screen Signaling (for 625 line 50 Hz signals) is
currently being detected in the input signal, and
grey if not.
CC / WSS Enable: click in the checkbox to enable
the insertion of the CC / WSS information into
the HDC-1801 output.