Extron electronics DVS 605, User Manual, Page: 33 / 133

DVS 605 • Operation 25
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 Grayscale 4x4 Crosshatch
Alternating
Pixels
Crosshatch
1.78 Aspect
1.85 Aspect 2.35 Aspect
Crop
Ramp
White Field
1.33 Aspect Blue Mode
Alternating
Lines
Figure 21. 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.
•
Grayscale and Ramp
—
Used to calibrate brightness and contrast settings.
• 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 — Assists the user in setting up the color and tint levels.
Use either the horizontal Adjust (
[
) or vertical Adjust (
{
) 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 of the screen when
switching between inputs. It 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 the OSD bug is on-screen 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 (see
OSD Input Information
on page 115), SIS commands (see
On-Screen Menu time-out
on page 55), or PCS (see
General Settings Page
on
page 90).
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