Operating instructions

GUIDE TO INSTALLATION AND OPERATION
FRS-1801 | 13
3.4.2 The Input panel
This panel allows control of the deglitcher and freeze functions. See figure 3.3.
Deglitcher tab
Mode: select OFF or ON from the Deglitcher
pulldown.
When the Deglitcher is active, the card supports a
hot-switch between two signals on the same input
without producing a freeze on the frame sync, and
without producing artifacts on the output. For this
mode to function correctly:
• The two inputs must be synchronized to the
reference
• They must be phased within one line of
each other
• They must be phased to within +/- ½ line of
the HREF of the reference signal
The offset from the VREF can be variable, but a
distance of greater than 10 lines could create an
artifact in the active video. If the two signals are
more than 1 line apart, we will see a vertical jump at
the moment of switching that is proportional to the
number of vertical lines of offset between the two
signals. This will last for only one frame.
When a reference is present and the deglitcher is
active, the card reports the difference in timing between the input and the reference when the transition
occurs.
• If the reference is missing when the deglitcher is activated, the Input timing to reference box will
indicate “Missing reference” in red, and the reference status icon at the top of the iControl window will
turn red and show the message “Reference missing”.
• If the deglitcher is OFF, the reference status icon will be grey, and its message will read “Reference
absent”
Figure 3.3 Video Input panel – Deglitcher tab