7
Genesis™ Matrix Switches
Technical Note about the Video Inputs
The HD15 inputs of the matrix handle only the color and sync signals.
EDID (extended display identification data) is absent. EDID is normally
used by the source PC to read pertinent information from the
connected display. This information includes a list of the resolutions
that are supported by the LCD. If EDID is not implemented, the source
PC is unaware of the specific LCD connected to it. Generally this is not
a problem since in the absence of EDID; most PC’s allow the user to
select from a set of default resolutions for output. Some PC’s may not
output any video signal, or only allow limited resolution settings with
the absence of EDID. One way to resolve this is to change the display
settings of the PC to show all modes and not detect Plug and Play
LCD. The procedure for doing this varies depending on the operating
system and the video card in the PC. It is generally found under:
Control Panel > Display Settings > Advanced > Monitor tab.
An alternative method is a hardware solution which does not require
any changes to the PC’s display settings. Hall Research manufactures
EDID Emulators that are constructed as simple HD15 pass-through
adapters. Inside, they emulate an LCD’s EDID supporting a wide range
of 4x3 and 16x9 PC resolutions.
Figure 3 – Pass-Thru EDID
Emulator
Model: EM-EDID-HD15
You would simply plug one of these at your video source or input to the
matrix.
2.1.1.2 Audio inputs
The audio input on the basic unit uses standard 3.5mm mini-stereo connectors. To
use these with PC audio, standard male-to-male audio extension cables would be
required. To connect from typical TV sources with separate right and left
connectors, 3.5mm male to 2 RCA cables would be needed.
For mono audio, then the tip of the 3.5mm connector (tip = left channel) should
be used.