6.3 On-Screen Display (OSD) F2 SETTINGS
6. Operation (continued)
F5 – TUNING As computers are located further away from the KVM switch, the video can\
become distorted. In the event you are experiencing poor video quality, the TUNING function can be used to correct it. Press the [F5] key to display the currently selected port, with the TUNING bar displayed. Use the [←] and [→] keys to make the necessary adjustments. When you are finished, press the [Esc] key to go back to the OSD....