This article assumes that your projector has been installed correctly and tested by the installer. If you are unsure of the size of your ActivBoard or projector model, please contact Promethean Technical Customer Support with your product serial number.

Locate the aspect ratio of your ActivBoard from the list below:

ActivBoard SizeAspect Ratio
95"16:9
88"16:10
87"16:10
78"4:3
64"4:3

Set a suitable screen resolution on your computer using the information in the table below:

4:3 Aspect Ratio16:9 Aspect Ratio16:10 Aspect Ratio
800 x 600852 x 480640 x 400
1024 x 7681280 x 7201280 x 800
1152 x 8641365 x 7681440 x 900
1280 x 9601600 x 9001680 x 1050
1400 x 10501920 x 10801920 x 1200
1600 x 1200  
2048 x 1536  
2560 x 1920  
3200 x 2400  
3840 x 2880  
4000 x 3000  
6400 x 4800  
7680 x 5760  

Should the projected image require adjustment, please follow the instructions below for your setup.

PRM-30 setup

Press the Aspect button on the projector remote control until the appropriate aspect ratio for your ActivBoard is displayed.

PRM-10 and PRM-20 setup with 87”, 88” and 95” ActivBoards (widescreen and non-widescreen laptops)

  • Connect the laptop/PC to the wallbox VGA connection.
  • Press Auto PC on the projector remote control.
  • Press Menu.
  • Press the right arrow key to navigate to the System option.
  • Press the down arrow key until the red arrow points to WXGA1 or WXGA3.
  • Press Select.
  • Press Auto PC again.

If WXGA1 and WXGA3 do not appear in the list, your laptop may not support the output of widescreen resolutions. You should speak to your IT department or laptop manufacturer to verify this.

PRM-10 and PRM-20 setup with 64” and 78” ActivBoards (widescreen and non-widescreen laptops)

  • Press Auto PC on the remote control.
  • Set a suitable 4:3 screen resolution on your computer.
  • Press Auto PC again.

DLP projector setup with 87”, 88” and 95” ActivBoards (non-widescreen laptops only)

  • If the projected image needs to be adjusted, press Menu on the remote control.
  • Press the right arrow key to navigate to Installation I.
  • Press the down arrow key so that Aspect Ratio is highlighted.
  • Press the right arrow key to select Fill.
  • Enable dual display on your laptop.

DLP projector setup with 64” and 78” ActivBoards (non-widescreen laptops only)

  • Press Menu on the remote control.
  • Press the right arrow key to navigate to Installation I.
  • Press the down arrow key so that Aspect Ratio is highlighted.
  • Press the right arrow key to select Native.
  • Set a suitable 4:3 screen resolution on your computer.

DLP projector setup with 87”, 88” and 95” ActivBoards (widescreen laptops only)

  • Press Menu on the remote control.
  • Press the right arrow key to navigate to Installation I.
  • Press the down arrow key so that Aspect Ratio is highlighted.
  • Press the right arrow key to select Native.
  • Set a suitable 16:9 or 16:10 screen resolution on your computer.

DLP projector setup with 64” and 78” ActivBoards (widescreen laptops only)

  • Press Menu on the remote control.
  • Press the right arrow key to navigate to Installation I.
  • Press the down arrow key so that Aspect Ratio is highlighted.
  • Press the right arrow key to select Fill.
  • Set a suitable 4:3 screen resolution on your computer.