Application Tips - evertz hd9084 Instruction Manual

HD9084 HDTV Caption Encoder Manual
This feature shares some functionality with HD9084 serial port A. It is required that port A is enabled,
port A mode is set to "Control-A", and port A is granted permission to caption onto CC1. No device
may attempt to communicate with the HD9084 via port A at the same time as the CC1 Message Inject
feature is enabled.
When the GPI is activated, the message will be inserted onto CC1 in 3-line rollup mode. The bottom
line of text will reside on row 15, which is at the very bottom of the screen. Insertion of the text will be
repeated every 15 seconds.
4.7.3.

Application Tips

If you wish to move the message text up, you may also use this feature in conjunction with the GPI
Caption Shift to move the text up 2, 3 or 4 rows.
If the message text is to be inserted into CEA-708 captions as well, enable the HD9084 built-in caption
translator to translate it onto the desired CEA-708 service.
When used in conjunction with a GPO configured to assert on "CC1 Data In", this feature can be used
to automatically insert a message when no upstream captions are observed on CC1 for up to 2
minutes.
SERIAL CONTROL PROTOCOL Page 4-23