Smart Avi HDR-4x4-Plus - Manual (Page 6)

RS-232 SWITCHING with SMARTCONTROLPRO SOFTWARE
When the software starts, you will see the configuration window.
 Select the COM port number where the RS-232 is plugged in.
 Choose “HDR 4x4” for Router Type.
 Click “OK”.
After clicking OK, you will then be working with the main Matrix View.
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