HDMI Matrix Switcher
PTN Electronics Limited
www.PTN-electronics.com
7
The MHD EDID database includes most popular displaying data, but not all the displaying data
because of the capability and firmware limitation. So, we can manually refresh the EDID data to update
the EDID data base.
6.2 EDID management of MHD matrix
The RS232 commands for EDID management of MHD matrix models include:
“EDIDMAuto.”
”EDIDMInit.” and ”EDIDM[X]B[Y].”, (Please notice the text-transform, and the dot in behind.)
6.2.1 Erase and Refresh the EDID data
The EDID refresh ports have the priority grade when the matrix is executing the EDIDMAuto function,
ranging from output 1 to output 8 in priority order. It means the output 1 is the most prior to exchange
the EDID data, and then the output 2 is the second prior to exchange the EDID data. And, the output 8
is the last prior.
When the user carries the EDID erase/refresh function, the MHD will detect the output priority and
exchange the EDID data with the available most prior output port.
Example of 8x8 matrix switcher priority.
