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1.
If the DVI or HDMI device requires the EDID information, please use EDID Reader/Writer to retrieve and
provide DVI or HDMI display EDID information.
2.
All HDMI over CAT5 transmission distances are measured using Belden 1583A CAT5e 125MHz UTP cable and
ASTRODESIGN Video Signal Generator VG-859C.
3.
The transmission length is largely affected by the type of Cat-5/5e/6 cables, the type of HDMI sources, and
the type of HDMI display. The testing result shows solid UTP cables (usually in the form of 300m [1,000ft]
bulk cables) can transmit a lot longer signals than stranded UTP cables (usually in the form of fixed length
patch cords). Shielded STP cables are better suited than unshielded UTP cables. A solid UTP Cat-5e cable
shows longer transmission range than stranded STP Cat-6 cable. For long extension applications, solid
UTP/STP cables are the only viable choice.
4.
EIA/TIA-568-B termination (T568B) for Cat-5/5e/6 cables is recommended for better performance.
5.
To reduce the interference among the unshielded twisted pairs of wires in Cat-5/5e/6 cable, one can use
shielded STP cables to improve EMI problems, which is worsen in long transmission.
6.
Because the quality of the CAT5/6 cables has the major effect on how long the transmission limit can achieve
and how good is the received picture quality, the actual transmission range is subject to one’s choice of
Cat-5/5e/6 cables. For desired resolutions greater than 1080i or 1280x1024, a Cat-6 cable is recommended.
7.
If your HDMI display has multiple HDMI inputs, it is found that the first HDMI input [HDMI input #1] generally
can produce better transmission performance among all HDMI inputs.
Performance Guide for HDMI over CAT5/6 Cable Transmission
Performance rating
Type of CAT5/6 cable
Wiring
Shielding
CAT5
CAT5e
CAT6
Solid
Unshielded (UTP)
Shielded (STP)
Stranded
Unshielded (UTP)
Shielded (STP)
Termination
Please use
EIA/TIA-568-B
termination (
T568B
) at any time
Notice
Содержание HDMI-SPL-2201C
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