evertz hd9084, Instruction Manual, Page: 114 / 126

HD9084 HDTV Caption Encoder Manual
Page 6-6 TROUBLESHOOTING
Ctrl + a (the control button on the keyboard plus the letter A button)
5
SPACE (space bar)
f
1
You will not see this displayed at the prompt.
•
Press the ENTER key
•
This Control A command is further outlined in section 4.3.4
•
All captions in field 1 should now be displayed in HyperTerminal
•
To turn this feature off, type in the following command
•
CTRL + g (Control key on the keyboard and the G key)
•
The captions will stop scrolling
This test shows the HD9084 is processing captions and allows the user to verify this through Hyper-
Terminal.
If captions are not displayed, check the following:
•
Ensure the command was entered properly.
•
Are captions present in the upstream video?
•
Turn on the CEA-608 Test Message via front panel.
6.3.5.2. Composite Monitoring Output Check
The HD9084 can decode both CEA-608 and CEA-708 captions. To check if captions are present and
processed, connect a BNC cable from the Comp Mon output of the HD9084 to an Analog Monitor.
Make sure video is present upstream. To verify CEA-608 captions are present and processed, make
sure SD-SDI video is present upstream.
To verify CEA-708 captions are present and processed, make sure HD-SDI video is present upstream.
Turn the appropriate decoder on (see section 3.5). Please note that video will not be present on the
monitor output, however, the decoded captions will be displayed.
If captions are not viewed on the Analog monitor, make sure the keyers are on, and captions are
present on the upstream video. The built in CEA-608 Test Message can also be turned on to verify if
the HD9084 is working properly. See section 3.4.2.6 to enable and disable the test message.
6.3.6. There are No Captions Present Out of the ATSC Encoder
Make sure the correct communication cable is used between the HD9084 Port B and the ATSC
encoder. A null modem cable is used in almost all cases.
Avoid using gender changers, “home made” cables, or distribution boxes between the HD9084 and
ATSC encoder. Ensure a direct path is provided from the HD9084 to the encoder with a proper working
cable.
Only Port B supports the SMPTE-333 and Grand Alliance serial protocols used by ATSC encoders.
Ensure that the ATSC encoder is connected to port B, and that Port B is set to the proper protocol and
baud rate using the front panel menu. See section 3.6.1 to configure Port B.
Verify captions are present on the upstream video following the procedure outlined in section 6.3.5.2
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RESTRITO