I contacted Informir and this was part of the reply
TV System
Video output mode for basic software.
The possible values:
PAL (576i) NTSC (480i)
576p-50 576p-60
720p-50 720p-60
1080i-50 1080i-60
1080p-50 1080p-60
Graphic Res.
Resolution graphics window for the main software.
The possible values:
720 (720×576)
1280 (1280×720)
1920 (1920×1080)
TV System Res
If the set value “Graphic Res.” More than the permissible resolution video output, the graphics window to set the most appropriate resolution.
If the value is “TV System Res.”, Then use the appropriate resolution of the current mode of video output.
For example:
If you select the video output mode (TV System) 1080i-50, the video will be played with a resolution of 1920×1080, and graphics (Graphic Res. - the menu graphic resolution) can be drawn with a resolution of (720×576, 1280×720, 1920×1080) that is, you can choose any resolution for the graphics menu, but lower resolution than the video output will be scaled to the resolution of video output. If the menu item “Graphic Res” is set to “TV System Res.”, It will use the resolution that corresponds to the current mode of video output, that is 1920×1080.
A typical variant: If you select the video output “TV System” - 1080i-50, and the graphic resolution “Graphic Res” - 720×576, the video will be played at the highest possible quality, and the graphics scale. That reduces the load and improve performance.
The possible values:
TV System Video Resolution Graphic Resolution
1080i/p-50/60 1920×1080 1920×180, 1280×720, 720×576
720p-50/60 1280×720 1280×720, 720×576
576p-50/60 1024×576 720×576
PAL (576i) 720×576 720×576
NTSC (480i) 720×480 720×480
How to change "video mode" and "graphical resolution"
From the menu BIOS MAG-200/250
Enter the BIOS(bootloader menu)
“Upgrade Menu” press the right. If there is no such step then go to the next one (This step can be apsent if the second Bootloader turned off or not installed).
Section “TV System” by pressing the right to set the desired value
Section “Graphic Res.” by pressing the right to set the desired value
Go to “Exit & Save”
Section “Exit & Save” press the right
Confirm “OK”
If there is no image on the screen maybe your TV doesn't support PAL system.
If there is no image then complete next steps:
Unplug power of STB
Press and hold “Menu” button on RC (direct your RC to STB)
Plug power on STB with holding “Menu” button
Hold “Menu” button during 10 seconds.
Switch PAL - NTSC with single press on red button “F1” on RC.
In the internal Portal
Click “Setup”, “Services” or “SET” on the remote control (Depends on the version the remote control)
Go to the “Video Settings”
“Video output mode” by pressing the left or right to set the desired value
“Graphic resolution” by pressing the left or right to set the desired value
Confirm “OK”
Select “Reboot”
Confirm “OK”
Connecting the HDMI-DVI
To connect the STB MAG-200/250 to the device with DVI interface, you must enable “Force DVI” in “System settings” in internal portal.
“System settings” - Press the «Setup», «Services» or «SET» on the remote control (Depends on the version the remote control)
“Video”
“Force DVI” - pressing the right set “On”.
Confirm by pressing the “OK”
