Problem: The Mouse Pointer Of The Agility Receiver Is Slow Or Sluggish When Moved Across The Screen - Black Box ACR1000A-CTL-24 Manual

Problem: The audio output of the Agility receiver sounds like a scratched record.
This issue is called Audio crackle and is a symptom of the same problem that produces blinding (see previous page). The issue is
related to missing data packets.
Remedies:
As per blinding discussed above.
Problem: The mouse pointer of the Agility receiver is slow or sluggish when moved across the
screen.
This issue is often related to either using dithering on the video output of one or more transmitting computers or using VGA-to-
DVI video converters.
Dithering is used to improve the perceived quality and color depth of images by diffusing or altering the color of pixels between
video frames. This practice is commonly used on Apple Mac computers using ATI or Nvidia graphics cards. VGA-to-DVI converters
unwittingly produce a similar issue by creating high levels of pixel background noise.
Agility units attempt to considerably reduce network traffic by transmitting only the pixels that change between successive
video frames. When dithering is enabled and/or VGA-to-DVI converters are used, this can have the effect of changing almost
every pixel between each frame, thus forcing the Agility transmitter to send the whole of every frame: resulting in greatly
increased network traffic and what's perceived as sluggish performance.
Remedies:
• Linux PCs
Check the video settings on the PC. If the Dither video box option is enabled, disable it.
• Apple Mac with Nvidia graphics
Use the Black Box utility for Mac's – Contact technical support.
• Apple Mac with ATI graphics
Use the Agility Dual series unit with Magic Eye dither removal feature.
• Windows PCs
If you suspect these issues with PC's, contact technical support for assistance.
• Replace old VGA adapters on host computers with DVI video cards.
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