
Page 6 Presentation Switchers, Inc.
Change Image Resolutions
Most source devices send an electronic inquiry to the display asking
for informa on about it’s capabili es. The display sends a table of
informa on called the Extended Display Iden fi ca on Data (EDID).
Using this informa on, the source device changes it’s resolu on to
match the na ve resolu on of the display or some other resolu on
that is supported by both source and display.
The PS112 intercepts the display’s response to the EDID table request
and sends its own EDID informa on to “trick” the source into sending
it’s content in a par cular resolu on and/or audio format. This method allows us to change the
resolu on of the source device without reprocessing the video image and degrading the quality
of the na ve image.
EDID Dip Switch: From Le to Right, D = Down, U = Up
Position EDID Format
D - D - D - D EDID Passthru Mode. In this mode, the source devices negotiate directly
with the display for the best resolution. If display does not support audio,
many devices will not send audio to the switcher and display.
D - D - D - U 2160p, 30Hz, Stereo Audio
D - D - U - D 1080p, 60Hz, Stereo Audio
D - D - U - U 720p, 60Hz, Stereo Audio
D - U - D - D 576p@50Hz, Stereo Audio
D - U - D - U 480p@60Hz, Stereo Audio
D - U - U - D 1920 X 1200, 60Hz, Stereo Audio (VESA Resolution)
D - U - U - U 1600 X 1200, 60Hz, Stereo Audio (VESA Resolution)
U - D - D - D 1400 X 1050, 60Hz, Stereo Audio (VESA Resolution) (Shown Above)
U - D - D - U 1280 X 1024, 60Hz, Stereo Audio (VESA Resolution)
U - D - U - D 1280 X 768, 60Hz, Stereo Audio (VESA Resolution)
U - D - U - U 1024 X 768, 60Hz, Stereo Audio (VESA Resolution)
U - U - D - D 800 X 600, 60Hz, Stereo Audio (VESA Resolution)
U - U - U - U Firmware Upload Mode
Cycle power (turn power off then back on) to enable the EDID table change.
Advanced Features