IDEA Auto-SYNC with RGB/VGA/DVI Analog Video
114 TIMS MVP
™
Setup and Configuration Guide
AccuStream Auto-SYNC Wizard Step 2: Adjust Phase Delay for
Analog Connections
The next step is to adjust the phase delay. The phase delay determines how the pixels
in the video signal are sampled and acts as an offset to the pixel clock. When the
phase is set correctly, the pixels are sampled at their peak values providing the best
image quality. Sampling the pixels with the wrong phase offset can lead to poor
results.
Figure 23: Auto-SYNC Wizard Step 2
Phase delay adjustments require a video image that has maximum horizontal contrast.
An image with a grill pattern or high contrast text is recommended.
The Phase Delay is adjusted in the standard way by typing a new value, using the
up/down buttons, or using the arrow/Page Up/Page Down keys. The histogram window
in the multi-view window can be especially helpful to see the effects of minor
changes.
The AccuStream boards support Fine Phase adjustment. There are 32 discrete phase
values that allow finer tuning of the phase adjustments.
Auto-SYNC will attempt to recalculate the optimal phase delay setting if you click the
"Auto..." button. Auto-SYNC prompts for a selection of the phase determination
algorithm; the algorithms are described earlier in this section. The phase
determination algorithms vary in time to complete and thoroughness of testing and it
