Operation, cont’d
Press the 
and 
buttons to increase and decrease the number of active pixels. Press the 
and 
buttons to increase and decrease the number of lines. Press the Enter button to save the changes and return to normal system operations.
Total pixels adjustment
There are several methods to determine the correct value to use in the total pixels variable. Usually, the best method is to use the input signal specifications. For some input sampling rates, the scaler’s setting can result in fine vertical lines (figure
Blanking Area |
Active |
Area |
Total Pixels
Figure 3-17 — Incorrect total pixels variable
As an approximate setting, multiply the active pixels setting (see Active area adjustment) by a factor of 1.3.
If the input pixel clock rate is known, the input total pixels setting can be calculated with this equation: Total pixels = input pixels clock ÷ input horizontal scan rate. (The input horizontal scan rate is one of the parameters reported on the Advanced menu>System Info screen.)
Once a preliminary setting is saved, some faint vertical lines may remain. Adjust the total pixels variable as necessary until the lines are completely out of view or as far apart as you can make them. If one line remains, it can be moved out of view using the Input menu>Phase Adjustment screen.
The active pixels and total pixels adjustments are interactive. Setting one of these variables may require adjusting the other.
Scan Type screen
The Scan Type screen is available for RGBHV, RGBS, RGsB, and progressive component video inputs only.
The Scan Type screen identifies the currently selected scan types and provides the ability to select a different type. Three scan type options are available; one, two, or all three can be turned on simultaneously: