Understanding the LCD Menus
50
Closed Caption Menu
The Closed Caption menu allows you to configure the closed caption functions in the system for CEA-
608B and CEA-708B standards, depending on the format conversion being performed. In NTSC analog
video and SMPTE 259M digital video systems, CEA-608B is the reference standard and captions are
encoded on line 21 of the vertical blanking interval (VBI). For HD-SDI video systems, the CEA-708B
standard describes the method for encoding captions in the SMPTE 292M digital bit stream, typically
on line 9.
The default settings for closed caption processing in the Teranex Processor will likely be the best
settings for you to start with, but the menus below provide you with flexibility in handling unusual
closed caption situations.
The Teranex Processor will automatically discover digital captions if they exist in both SD and HD video
formats therefore no user interface menus or adjustments are provided. Keep in mind that digital captions
take precedence over analog captions in SD input signals. If no digital captions are present, the processor
will look for analog captions by default on line 21. If you believe the program has captions but don’t see
captions on line 21, you can use the Analog In Line selection menu to look for captions on lines 20 or 22.
Closed Caption Processing in SD Sources
Standard definition formats will output 608 captions in both analog and digital formats.
Closed Caption Processing in HD Sources
For high definition output formats, closed captions will be inserted on line 9 by the Teranex Processor.
This setting is not adjustable.
Closed caption processing also supports up-conversion of the 608 CC2 and CC3 secondary language
services to the 708 Service 2 (S2) via the Service 2 Source menu described below.
The Closed Captioning menu offers the following selections and adjustments:
CC Enable – Turns Closed Captions ON or OFF in the output video.
Analog In Line – Allows you to select the Analog Closed Caption Input Line.
Analog Out Line – Allows you to select the Analog Closed Caption Output Line.
Service 2 Source – Allows you to select between CC2 and CC3 as the Closed Caption Service 2
Source.
Service 1 Language – Allows you to select the language used for Service 1.
Service 2 Language – Allows you to select the language used for Service 2.
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