Extron electronic IN1404XT manual Advanced input settings, Input blanking adjustment

	Vertical		Blanking Area
	Blanking
Total			Active Area
Lines
	Active
	Lines
		Horizontal	Active Pixels
		Blanking
			Total Pixels

Figure 3-14 — Advanced input settings

•Horizontal blanking — Set from the Blanking submenu. The number of pixels per line that are inside the blanking area to the left of the active area (including the horizontal sync width and the horizontal back porch.

•Vertical blanking — Set from the Blanking submenu. The number of lines per frame that are inside the blanking area above the active area (including the vertical sync height and the vertical back porch).

•Total pixels (RGBHV/RGBS/RGsB, and progressive component only) — The total number of pixels per line, including the blanking on both sides of the input active area (active, horizontal sync width, back porch, and front porch).

The total number of lines per frame, including the blanking above and below the active area is determined by the input signal and is not user adjustable.

Use these controls to match the input video signal and to frame the active area.

The active pixels and total pixels adjustments are interactive. Setting one of these variables may require adjusting the other.

Input blanking adjustment

The input blanking controls adjust where the electronic scaling process takes effect. The input blanking and active area should be manually adjusted, if necessary, to match the input video signal, framing the active area of the input signal. If the blanking is set incorrectly, the scaler may add blank borders on the leading edges (top or left side) or it may crop the active area on the trailing edges (bottom or right side).

Figure 3-15 shows an image that is improperly blanked (as indicated by the dashed lines). If the horizontal blanking adjustment is set to less than the amount of actual blanking, the IN1404XT starts scaling the input before the start of the active image. This early scaling results in a blank border on the left side and cropping on the right side, and looks as if the image is shifted to the right.

IN1404XT Video Scaler and Switcher • Operation 3-25