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Installation and Operation, cont’d
DVS 204 • Installation and Operation2-12
Resolution and refresh rates
Rotate the Adjust horizontal ( ) knob while in this submenu to select one of the
available combinations of output resolutions and refresh (vertical scanning)
rates.
Rotate the Adjust vertical (
) knob while in this submenu to select one of the
available refresh rates. Selecting @60L (Lock) refresh rate enables the Extron
Accu-RATE Frame Lock
™
(AFL
™
) (patent pending) feature. Accu-RATE Frame
Lock eliminates image tearing and other artifacts of scaling motion video by
eliminating frame rate conversion. It exactly matches the output rate of the
DVS 204’s scaler to the frame rate of the active input. Select this feature if you
will be using motion video sources with a display that is capable of a variety of
refresh rates.
Available Scaler Output Resolutions and Rates
Resolution 50 Hz 56 Hz 60 Hz 75 Hz Lock @ 50/60* True 72/100*
640 x 480 X X X X X
800 x 600 X X X X X
848 x 480 X X X X X
852 x 480 X X X X X
1024 x 768 X X X X X
1280 x 768 X X X
1280 x 1024 X X X X **
1360 x 765 X X X X X
1365 x 1024 X X X X **
1400 x 1050 X X X X X
HDTV 480p X X
HDTV 576p X X
HDTV 720p X X
HDTV 1080p X X
HDTV 1080i X X X
*Rate is autoselected based on input ** NTSC only; no 100 Hz rate
The default resolution and rate is 1024 x 768 @ 60Hz.
Output Signal
Using either the Adjust horizontal ( ) or Adjust vertical ( ) knob, select the
output video format required by the display: RGB (default), YUV, or RGsB.
Sync Polarity
The display or projector may require a particular combination of horizontal (H)
and vertical (V) sync signal polarities. Select the appropriate combination of
positive or negative H and V sync by rotating either the Adjust horizontal ( ) or
Adjust vertical (
) knob.
If the previous output signal was specified as RGsB or YUV, this submenu
will not be displayed because this menu is only active for RGBHV.