AMX UDM-0404 - Manual (Page 21)

Wiring and Connections
9 UDM-0404 4x4 Multi-Format Distribution Hub
Audio & Video Formats/Resolutions/Distance
The following table provides recommended maximum distances for cable runs, based on video class
type at various resolutions:
It is important to note that the maximum distances indicated above are not absolute, but are
recommended distances that have been tested to deliver video at the specified resolutions, without
significant signal degradation. In particular, lower resolutions (640 x 480, 720 x 480 and 800 x 600) can
often be delivered significantly further than what is indicated in the table.
Several factors affect the overall quality of the displayed video, including the quality of the twisted pair
cable and connectors used, the nature of the video image itself, as well as the particulars of the
installation and how the video is displayed and viewed.
Two major factors affect the quality of signal transmission include:
Cable Distance: Naturally, long distances cable runs (in excess of 300 meters/1000 feet) are
always subject to resistance and capacitance losses which can negatively impact the quality of
the image.
Skew: "Skew" represents the slight delay that results from the variation in wiring lengths for
each of the twisted pairs. The effects of skew on A/V signals increases with cable length.
Excessive skew can adversely affect video image quality, especially at long cable lengths and
high signal resolutions.
UDM Hubs allow you to compensate brightness, sharpness and skew delay via options in the Status page
of the UDM’s built-in WebConsole (see the Video Compensation section on page 25).
Audio & Video Formats/Resolutions/Distance
Class Format Name UDM-RX01 UDM-RX02
Composite 720x480 NTSC 300 m / 1000’ 300 m / 1000’
720x576 PAL 300 m / 1000’ 300 m / 1000’
Component 720x480 480p 300 m / 1000’ 300 m / 1000’
720x576 576p 300 m / 1000’ 300 m / 1000’
1280x720 720p 200 m / 650’ 300 m / 1000’
1920x1080 1080i 150 m / 500’ 300 m / 1000’
1920x1080 1080p 120 m / 400’ 300 m / 1000’
VGA 640x480 VGA 200 m / 650’ 300 m / 1000’ *
800x600 SVGA 200 m / 650’ 300 m / 1000’ *
1024x768 XGA 200 m / 650’ 300 m / 1000’ *
1280x1024 SXGA 150 m / 500’ 300 m / 1000’ *
1600x1200 UXGA 120 m / 400’ 300 m / 1000’ *
* When using VGA modes with audio enabled, the maximum cable distance is
approximately 200 m / 650’ (UDM-RX02).