Crystal Vision
The card edge display
TANDEM-110 User Manual R1.8
61
07/07/2010
Enabling EDH functions
EDH functions may be selected to be ‘pass through or OFF’ or ‘include EDH functions or
ON’.
In de-embedder only mode, the EDH functions checks EDH incoming performance, but
does not alter EDH insert CRC values.
If ‘Mark for Deletion’, ‘Blank HANC’, or embed mode are in place then EDH CRC
values will no longer be valid. In this case, new EDH insert CRC values are calculated
and inserted into the EDH data block in each TV field.
The EDH menu is obtained with Menu lever 5 ON (DOWN), all other levers UP (OFF
)
and the SEL switch in position C for side 1 and D for side 2. Turn the shaft encoder to
select between ‘EDH on’ and ‘EDHoff’.
SEL
Display
Comments
C
SD1 EDH on or EDHoff
Use shaft encoder to select ‘EDH on’ or
‘EDHoff’. It is recommended to leave this
setting as ‘EDH on’ for normal operation.
D
SD2 EDH on or EDHoff
Viewing ancillary data status
An ancillary data monitoring facility has been provided to show the following:
SDI status
Input audio group present
Deletion status
EDH data present
The ancillary data status display is obtained with Menu lever 6 ON (DOWN), all other
levers UP (OFF
)
and the SEL switch in position E for side 1 and F for side 2.
SEL
Display
Comments
E
SD1 1234dE
See notes and examples for detailed explanation
F
SD2 1234dE
Note:
If no SDI input is present on that side the display will read, ‘no inp’.
‘d’ indicates the presence of embedded audio marked for deletion.
‘E’ indicates the presence of EDH inserts.
‘-’ indicates that a possible input (group, deletion flag or EDH insert) is not present.
Examples:
SDI 1----E Audio Group 1 and EDH only present.
SDI -23-d- Audio Groups 2, 3 and ‘Marked for Deletion’ present.
Tip:
A much wider range of Demux and Mux status reporting, including HANC status, is
discussed in Chapter 6, Problem solving.
