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6. Advanced
video signal
Image 6-99
HI AGC Hold interval
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.
Advanced Data settings
The advanced button enables the advanced settings for a data source.
Image 6-100
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:
86
frame blanking
egalisation
HI
disturbances since the AGC is hold during a long interval, thus reducing the
®
pulse.
®
video signal
a
b
Hs
Image 6-101
Hs horizontal sync pulse
a
active low
b
active high
R5976874 ID PRO R600/R600+ 21/09/2006
video info
Hs
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