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CPP100
SECTION 6
CPP1OPS
25/10/06
www.snellwilcox.com
Version 1 Issue 6
6.33
Vert Adap (cont)
(not on –G version)
On
The filter will adapt to vertical transitions. This
is optimised for the sharpest pictures. Normal
chroma transistions are unaffected in this
mode. This has the maximum vertical
resolution.
Off
In this mode some reduction of cross colour
can be achived in addition to suppression of
Hannover bars. However this will be at the
expense of softening all vertical colour
transitions.
This mode should be used where the picture
content has a lot of high frequency diagonal
luminance. e.g. Small graphics, captions,
scrolling titles, chequered patterning etc.
Pedestal
This determines whether the input pedestal is
removed or passed
Ped On
The input has a pedestal
Ped Off
The input has no pedestal
Default
Ped On
Genlock Menu
To go directly to this menu PRESS and HOLD the
GLK button on the front panel.
Genlock can be turned ON/OFF directly from the
front panel by pressing the GLK button.
Incorporated onto the noise reduction card is a full
frame synchroniser which allows the selected input
to be referenced to a signal of the same line
standard.
The menu system allows the synchroniser to be
switched such that the genlock mode is on or off.
Genlock Off
When the genlock is forced into the off state the
output video will
not be locked
to the input or the
reference video signal.
This is sometimes referred to as “free-running”. If
the input and output were to be viewed on an
oscilloscope the two traces would be seen to be
moving one past the other.
Genlock On ( Default )
This mode forces the output to be locked to another
video signal of the same line standard.
Usually Genlock On will force the output to be
locked to the signal that is connected to the
reference input.
However, if the reference signal is invalid, or of a
different line standard than that of the input, the
synchroniser will lock the output to the input. This
mode of operation needs to be used if the source
video signal has embedded audio in the ancilliary
data space.
The status display will always indicate the mode of
operation for the synchroniser.
In the event of an input loss (with the unit
Genlocked to the input), the output will be
momentarily disrupted when the input is returned.
This effect can be minimised by ensuring the
system is Reference Locked.
Genlock
Genlock
▶
Status
▶
H-Lock
▶
V-Lock