promethean ActivPanel User Manual

44 ActivPanel User Guide
A ‘set refresh range’ message
appears briefly on your display
screen.
Set the refresh rate to a vertical frequency that is compatible with
your pen display. See the Product specifications for frequency
range details.
The image appears multiple
times on the display.
Do not extend the video cable or use an input selector switch box.
When a still image is displayed
for a long period of time without
refreshing the screen, an
after-image remains for a short
period of time.
Use a screen saver or other power management feature.
Color quality is inaccurate.
•
Open the OSD menu and select the Reset option.
•
Be sure the color profile has been installed and is selected as the
profile for use with your operating system and applications.
(Some models may not include a color profile.)
•
Any changes to the contrast setting should be made in small
increments as changes in contrast may affect color accuracy.
The color white does not display
as white.
•
Be sure the color profile has been installed and is selected as the
profile for use with your operating system and applications.
(Some models may not include a color profile.)
•
Verify that the display is operating at the factory default settings.
If that is not sufficient, then adjust color as necessary. For details on
color management, refer to your operating system and application
documentation.
•
Verify that the video cable and connector are fully connected.

promethean ActivPanel Specifications

General

Resolution	4K UHD (3840 x 2160)
Display Type	LED
Screen Sizes	55", 65", 75", 86"
Operating System	Android
Connectivity	HDMI, USB, Ethernet, Wi-Fi
Integrated Speakers	Yes (varies by model)
RAM	4GB or higher (varies by model)
Storage	32GB or higher (varies by model)