7814UDX-4K Series
HD/3G/UHD Up/Down/Cross Converters
Page - 32
Revision 1.2
5.7.1. Reference Controls
Reference Select:
With this control, the source of video reference for the conversion path is detected.
When the card is used in the 7700FR-G, 7801FR or the 7800FR Frame Reference inputs may be used.
When
External Genlock
is selected, the conversion Path will lock to the incoming reference.
When
Video
is selected, the conversion path will ignore the incoming Genlock source and lock to the
incoming video stream.
NOTE:
If the selected Genlock reference disappears or is not valid, the card will lock to
incoming video.
The drop down menu for the
Reference Select
appears as follows:
Genlock Source:
Possible options for Genlock Source are as follows:
The control values for the Genlock Source control have the following meanings:
Card Ref
When
Card Ref
is selected, the module will lock to the external reference signal
applied to the module’s rear panel.
Frame Ref 1
When
Frame 1
is selected, the module will lock to the external reference applied to the
7800 frame REF 1 input.
Frame Ref 2
When
Frame 2
is selected, the module will lock to the external reference applied to the
7800 frame REF 2 input.
NOTE:
If the selected Genlock reference disappears or is not valid, the card will lock to
incoming video or free-run.
Genlock terminator:
The genlock terminator control allows for software selectable 75 Ohm or HI-Z
termination on the reference input. When this control is set to disable, the module will setup the reference
termination to Hi-Z. When this is set to enable, the module will setup the reference termination for 75 Ohm.
Genlock VITC Read Line:
This control specifies the line number where VITC time code will be extracted
from the input reference signal.
The range of the Genlock VITC control is line 6 to line 22 for 50Hz field rates (PAL) and from line 10 to line
20 for 59.94 field rates (NTSC).
