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12. Image Files Menu
Advanced edit
Comb filter
On
Off
AGC hold interval
Short
Long
Sync locking
Slow
Fast
Sharpness
Coarse
Fine
Image 12-8
video signal
video signal
frame blanking
HI
egalisation
Image 12-9
HI AGC Hold interval
The Comb filter is by default enabled.
The AGC hold interval is t
he 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
®
disturbances since the AGC is hold during a long interval, thus reducing the
probability to encounter a Macrovision
®
pulse.
The sync locking setti
ng 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 sour
ce is selected, the advanced button enables the advanced settings for a data source.
Advanced edit
VCO range
PLL Cpmp
Clamp position
Clamp width
0
0
16
16
Horizontal sync polarity
Determined by ADC
Active low
Active high
Input format
RGB
PR/Y/PB
HDTV-PR/Y/PB
Image 12-10
video info
a
Hs Hs
b
Image 12-11
Hs horizontal sync pulse
aactivelow
b active high
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:
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R5976817 RLM H5 02/06/2006