Rgb Source Special Adjustments - Zenith Presentation PRO900X Operating Manual

RGB Source Special Adjustments

(Normally adjusted by the installation technician; usually
no additional changes are needed.)
For the RGB Source only, the Clamp Pulse is set at Auto
Select by the factory.
Auto Select determines the pulse of the RGB input video
source and automatically chooses the appropriate setting.
Adjustment to the Clamp Pulse may be necessary under
certain conditions: When an erroneous background color is
being produced by extremely wide horizontal signal pulses,
When the image is accompanied by "banding," When the
Adjustment Adjustment Options or Range and Effect
Clamp Pulse, Sets the position of the clamping signal for the video. The options are to clamp on the Back Porch or
the Sync Tip, or to Auto Select between the two based on the format input.
Sync Inputs Determines if a 75 ohm termination should be made to the H Sync and V Sync inputs. The options are
either Terminated or Not Terminated.
Sync Mode Selects a special type of studio composite sync when such a signal source is used on the H Sync input.
The default setting is for Normal Analog/TTL. Switch to Special Composite when using the studio
sync source.
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image is "splotchy," When the image is too green, or when
the image is too dark.
The Clamp Pulse is initially set to Auto Select. You can
choose to set it at Back Porch or at Sync Tip.
If you change the equipment connected to the input jack
of the RGB video source, adjust the Clamp Pulse for the
new RGB video source. Set at Auto Select, Back Porch, or
Sync Tip, whichever produces the best image and mini-
mizes signal degradation.
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