evolution 5000 E5780 and E5782 Encoder
21
VBI Options (525 lines, 29.97 Hz) - in SD the Encoder can extract a
maximum of eight VBI lines per field. The possible VBI types are;
Vertical Interval Time Code (VITC), Video Index, Closed Caption,
Neilson AMOL 1, and Neilson AMOL 11.
To enable the processing of VBI select the following options:
!
VBI on PID – set to On to enable the extracted VBI data to be
carried on a separate PID.
!
VBI PID - assign the PID to be used to carry the VBI data.
!
Auto Detect VITC – set to On if the Encoder is required to
automatically detect the presence of VITC and extract it. In HD the
timecode is extracted according to SMPTE RP188 from the HD SDI.
!
VBI Lines – select individual VBI lines to set the VBI type that the
Encoder should extract from that line (SD only).
!
Closed Captions – set to the required source of closed caption
data. The options are; video line 21, video line 21 and line 284,
SMPTE 333M, SCTE20, SCTE21 or SCTE20 & 21.
!
CC Format – select the required closed caption format, the default
is ATSC, and this is the required setting for EIA-708B compliant
closed captions.
!
SMPTE 333M Port – if the closed caption source has been set to
SMPTE 333M, then the Encoder’s RS-232 port through which the
data is to be input must be selected.
!
SMPTE 334 CC can be extracted from the HD-SDI.
For more details regarding setting up the Encoder’s closed caption
options see the Reference Guide.
4.7
Set the Audio Options
The standard Encoder can process two stereo pairs, but up to four can
be processed with the addition of audio option cards. All the audio
inputs are configured in a similar manner.
Navigate to the
Audio
Menu
. Select the following options:
!
Source Option - select the audio source.
This can be an analogue
or a digital input, or can be de-embedded from the SDI input. If the
audio source is embedded in the SDI (HD or SD) then the audio
DID must be set. Entering 1024 for the DID causes the default DID
for the selected group to be used.
!
Coding Standard Option - Select the coding standard, e.g.
MPEG Layer 2, Dolby Digital (AC-3) etc.
!
Bit-rate Option - select the required audio bit-rate.
