Extron electronic DVS 605 Overscan, Switch type, Test pattern, OSD duration, Test Pattern Choices

Overscan

Use the horizontal Adjust knob ([) to select input video type (RGB, YUV, RGBcvS, S-video, composite, or HDMI), and the vertical Adjust knob ({) to select the overscan mode (None, 2.5% or 5.0%).

Overscan is specific to each input signal type. This zooms and crops SMPTE inputs to mask edge effects and ancillary data that are common in broadcast signals. Issuing an Auto‑Image with overscan enabled, runs an Auto Phase routine (YUV and RGB only) and centers and sizes the input according to table values.

NOTE: Overscan is valid only on SMPTE input rates (NTSC, PAL, 480p, 576p, 720p,

1080i, or 1080p).

Switch type

This enables a video switch transition (cut or dissolve) when switching between inputs. Use either of the Adjust knobs ([ {) to select the switch type as desired.

NOTE: Input switches between input 4 and input 5 use a fade through black

transition.

Test pattern

The built-in test patterns are useful for calibrating a display to the DVS 605 output. Choose a test pattern such as crop, alternating pixels, and color bars to adjust the image.

Color Bars Crosshatch 4x4 Crosshatch Grayscale

Ramp	Alternating		Alternating
		Pixels	Lines

White Field Crop 1.33 Aspect 1.78 Aspect 1.85 Aspect 2.35 Aspect Blue Mode

Figure 20. Test Pattern Choices

•Alternating Pixels — Used to calibrate input sampling of the display devices to the device output. Use this pattern to adjust the clocking and phasing at the display until no more vertical bands are visible.

•Crop — Used to center the output on the display device: adjust H and V to center the display until all four crop lines are visible.

•Color Bars — Used to calibrate color settings on the display and to confirm proper system wiring.

•Blue Mode — This assists the user in setting up the color and tint levels

Use either the Adjust horizontal ([) or Adjust vertical ({) knob to select a test pattern. The default state is Off.

OSD duration

The DVS 605 displays a small OSD “bug” in the upper left corner when switching between input. This bug contains information regarding the detected input rate and format, the HDCP status of the selected input, and an indication of Main vs. PIP inputs. The duration that the OSD bug is on-screen (in seconds) can be set from 1 to 500 seconds via the front panel menu. It can also be set to “No OSD” or Always On”.

The duration can also be set via the internal web pages, or by SIS commands.

DVS 605 • Operation 25