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12. Image Files Menu
Advanced edit
Comb filter
On
AGC hold interval
Short
Sync locking
Slow
Sharpness
Coarse
Image 12-8
The Comb filter is by default enabled.
The AGC hold interval is the time interval in which the AGC is inhibited (AGC hold = no update in video amplitude measurement),
the advanced parameter allows to choose a short or long hold interval.
A long AGC hold interval eliminates Macrovision
probability to encounter a Macrovision
The sync locking setting is recommended for poor video signals (ex: poor TV signals).
Sharpness adjustment can be chosen to be coarse or fine.
It is recommended to use the default values.
12.6.4 Advanced Data settings
Overview
When a data source is selected, the advanced button enables the advanced settings for a data source.
Advanced edit
VCO range
PLL Cpmp
Clamp position
Clamp width
Horizontal sync polarity
Determined by ADC
Active low
Active high
Input format
RGB
PR/Y/PB
HDTV-PR/Y/PB
Image 12-10
The VCO range setting determines the frequency range of the VCO (Voltage Controlled Oscillator).
The Cpmp (Charge pump current) sets the low pass filter current.
Both VCO range & Cpmp are set by the image file, changing these settings is only indicated in for special purposes.
The horizontal sync polarity setting can be useful in case of a bad shaped edge, one can choose between the leading (active low)
or trailing (active high) edge.
The input format settings are used to "tell more" about the signals connected on the BNC's, it completes the information in the source
selection menu.
- RGB is selected by default and means that an RGB signal is connected to the BNC's
- PR/Y/PB must be selected whenever:
114
video signal
Off
Long
Fast
Fine
Image 12-9
HI AGC Hold interval
®
pulse.
®
0
0
16
16
Image 12-11
Hs horizontal sync pulse
a
active low
b
active high
frame blanking
egalisation
disturbances since the AGC is hold during a long interval, thus reducing the
video info
a
b
Hs
video signal
HI
Hs
R5976816 RLM R6+ PERFORMER 02/06/2006
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