TBS100/100D
SECTION 4
TBS100OPS
20/10/06
www.snellwilcox.com
Version 2 Issue 5
4.21
Proc Amp
Note that for this and other screens the following
applies:
The
symbol represents the Preset function
and will return the function to the default setting.
The
and
symbols at the ends of the scroll
bar allow the value to be adjusted in discrete steps.
The numerical value will be shown above the scroll
bars and selecting Preset
will return the
setting to the calibrated value of 0 for items on this
screen.
This screen will allow the settings of the Chroma
Gain, Black Level, NTSC Hue, Luma Gain, Y/C
Timing and Picture position to be adjusted. AGC
and ACC may also be enabled.
Luminance Gain
This item allows the gain of the luminance signal to
be adjusted.
By using the scroll bar the gain may be adjusted by
±3 dB in steps of 0.1 dB.
Black Level
This item allows the Y pedestal or black level to be
adjusted.
By using the scroll bar the pedestal may be
adjusted by ±102.4 mV in steps of 1.6 mV.
Chroma Gain
This item allows the gain of the chrominance signal
to be adjusted.
By using the scroll bar the gain may be adjusted by
±3 dB in steps of 0.1 dB.
Timing
Timing Enable
Selecting this item will enable the Picture Position
and
YC Timing
functions.
Picture Position
This item allows the timing of the picture position
relative to the normal value, to be adjusted.
By using the scroll bar the timing may be adjusted
by ±1036 ns in 148 ns steps.
YC Timing
This item allows the timing of the chrominance
signal relative to the luminance signal to be
adjusted, (i.e. Y to Cb/Cr timing) in nanoseconds.
By using the scroll bar the timing may be adjusted
by ±1036 ns in 148 ns steps.
.
NTSC Hue
This item allows the Hue of NTSC signals to be
adjusted. By using the scroll bar the Hue may be
adjusted by ±180 ° in steps of 1°.
.
Decoder
This function allows automatic level controls to be
enabled.
Auto gain Control
When this item is enabled the luminance gain will
vary relative to the input peak white amplitude.
This will maintain the output signal at a normalised
level even though the input signal level may be
above or below standard level.
The control will be effective over an input level
range of +3 dB to –6 dB.
Auto Color Control
When this item is enabled the chrominance gain
will vary relative to the input burst amplitude. This
will maintain correct colour saturation regardless of
changes in subcarrier amplitude.
