DVI /Audio Matrix Switcher 8x8
PTN Electronics Limited
9
www.PTN-electronics.com
7. Advanced Function Introduction
7.1. EDID Management Introduction
MDV matrix switcher is built in the EDID management database.
The EDID management can be automatically shake hand, or manual exchanged,
and factory restore.
The MDV matrix switcher is built in the EDID data, which can communicate with
the displayers and video source automatically.
When the displayers or video sources are connected to the MDV matrix switcher, they
will share the EDID/DDC information with the matrix switcher.
The communication solution is like this:
Figure 7-1 EDID Hand-shake Communication
The MDV 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.
7.2. EDID management of MDV matrix
7.2.1. RS232 Commands for EDID Management
1)
The RS232 commands for EDID management of MDV matrix models include:
”EDIDMInit.” and”EDIDM[X]B[Y].”, (Please notice the text-transform, and the
dot in behind.)
When we send the “EDIDMInit.” to the MDV matrix switcher, it will recover the
factory def
ault EDID data. The feedback is “EDIDMInit”.
When we send the RS232 command “EDIDM[X]B[Y].”. The matrix will copy the
EDID data of output[X] to the input[Y]. The feedback is “EDIDM: [X]To[Y]”.
2)
When a RS232 command is correctly sent, all the connected displayers will be