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12
UDM-1604 Endeleo Multi-Format Distribution Hub
A/V Source Input Connectors
There are four sets of input connectors to the rear panel of the UDM-1604, labelled A, B, C and D
(FIG. 10).
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.
FIG. 10 A/V Source Input connectors (A and B shown)
Audio & Video Formats/Resolutions/Distance
Class Format Name Distance (m) Distance (ft.)
Composite 720x480 NTSC 300 1000
720x756 PAL 300 1000
Component 720x480 480p 300 1000
720x756 576p 300 1000
1280x720 720p 200 650
1920x1080 1080i 150 500
1920x1080 1080p 120 400
VGA 640x480 VGA 200 650
800x600 SVGA 200 650
1024x768 XGA 200 650
1280x1024 SXGA 150 500
1600x1200 UXGA 120 400
Video Input (female HD15)
Digital Audio Input (SPDIF)
RCA Audio Inputs (L/R)