GUIDE TO INSTALLATION AND OPERATION
52
| XVP-3901
from within incoming EIA-708-B DTV closed captions, buffers, and re-inserts the data within line 21 of the output SD
signals as per EIA-608-B standard. Processing is restricted to NTSC CC information (Service 0) only.
The XVP-3901 also supports incoming EIA-608-B CC packets conforming to SMPTE 334M. However, EIA-708-B
packets have priority. If both are embedded in the source, the EIA-708-B packets are decoded, as explained above,
and the EIA-608-B packets are discarded. If no EIA-708-B packets are detected, EIA-608-B packets are automatically
extracted if detected.
Closed captions insertion is disabled for 50Hz and 1080p23/1080p23/1080p25/1080p29 sources.
SD to SD operation:
In order to allow the XVP-3901 to properly handle incoming closed captions on line 21, make sure to set
SD
Input/Output Config
to
Blanking
and make sure to set
Insertion
to
Auto
.
SD Input/Output Config section
Line 21:
Specifies if line 21 (or line 23 in PAL) shall be considered as blanking or active video; this selection affects
Close Caption
availability, controlled in the
Close Caption
sub-section of this tab (see above). Depending on the
settings and input/output selected, it also affects the output video, as shown in this table:
For SD Output:
Input Format Line 21 Status
CC Insertion Effect on SD Output
3G/HD 60 Hz Blanking
Off
Line 21 blanked, first active line is 22, image slightly downscaled
Auto
CC run-in on line 21, first active line is 22, image slightly downscaled.
Active
N/A
Line 21 has active video and may be resized.
SD 60 Hz
Blanking
Off
Line 21 blanked.
Auto
Input line 21 copied to output.
Active
N/A
Line 21 has active video and may be resized.
3G/HD 50 Hz Blanking
N/A
Line 23 blanked, first active line is 24.
Active
N/A
Line 23 has video and may be resized.
SD 50 Hz
Blanking
N/A
Line 23 blanked, first active line is 24.
Active
N/A
Line 23 has active video and may be resized.
The
Line 21
pulldown also appears in the HD Video Output Panel, and the two follow each other; change the selection
in one and the other is also changed.
Blanking section
Insertion of the Vertical Blanking Interval may be set to
OFF
or
AUTO,
using the pull-down box. Insertion is disabled if
no VBI data is present.
•
For SD outputs, VBI insertion may only be enabled when the detected input is SD.
•
Audio, closed-captioning, time-code, and AFD data is not handled by this parameter. The only exception is time
code during SD to SD operation, in which case the user must use this parameter to enable/disable time code
insertion.
•
SD to SD: All incoming HANC packets within H blanking, VANC packets within VBI, and VBI lines may be
bypassed to the output.
5.5.4.3 Meta / Namedropper sub-tab
Namedropper is a method of inserting control information for
down-stream graphics inserters. It is a waveform-shape
located on line 18 in SD, but a VANC packet on line 11 in
HD.
The XVP-3901 detects the presence of Namedropper data in
the program arriving at its input, and flags it using the status
icon in this panel, which turns green when Namedropper
Figure 5.32 Video Outputs SD - Meta/Namedropper