C2-5000 Series Universal Scaler Operation Manual
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the left side of the monitor without changing the width of the sync pulse itself
(another way to control where the image area starts).
By adjusting this parameter, you can control the start of the back porch (with
respect to the trailing edge of Horizontal Sync) and also its width. The place
where the Back Porch begins with respect to the Horizontal Sync pulse and the
width of the Back Porch have a direct bearing on where the active (visible)
portion of the image begins.
When parked on the above screen, press the Menu Select knob and the brackets
will begin to flash. Adjust the parameter and press the knob again. Rotate the
knob one detent to the right, press the knob and adjust the second parameter.
Press the knob again to record that value. There is a certain amount of
interaction between the two controls so make your adjustments carefully and
slowly. To make this adjustment, an oscilloscope must be employed so you can
see the results of your actions in a more graphic manner. Do not attempt this
adjustment without monitoring the results with an oscilloscope.
16.7 H/V
Sync
800 x 600 60 Hz
H/V Sync [ 128] x 4
There are standards for all current computer and broadcast resolutions that
specify the correct width of both Vertical and Horizontal synchronizing pulses.
If you are creating a special, non-standard resolution, you may wish to adjust the
pulse width to fit your new requirements. The H/V Sync screen is where that is
accomplished.
When the above screen is visible, press the Menu Select knob until the brackets
begin to flash. Set the value for the Horizontal Pulse and press the knob again to
record your choice. Rotate the knob one detent to the right and repeat the
process for the Vertical Sync pulse width. Like the H/V Start adjustment, you
must use an oscilloscope when making these adjustments so that you know
exactly how many milliseconds or microseconds of pulse width you have created.
The numbers shown on the LCD screen are relative numbers and not an actual
time measurement.
16.8 Sync
Polarity
800 x 600 60 Hz
Sync polarity [+H+V]
Summary of Contents for C2-5000 Series
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