Notice
1.
When adjusting the signal level on the receiver unit, please dial the rotary control switch from 7 to 0 and stop turning
the rotary switch whenever the audio/video is playing normally. Inappropriate signal level setting may cause
overpowering issue that would shorten the product life significantly!
2.
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.
3.
All HDMI™ over CAT5 transmission distances are measured using Belden 1583A CAT5e 125MHz UTP cable and
ASTRODESIGN Video Signal Generator VG-859C.
4.
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.
5.
EIA/TIA-568-B termination (T568B) for Cat-5/5e/6 cables is recommended for better performance.
6.
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.
7.
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.
8.
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 Category Cable Transmission
Performance rating
Type of category cable
Wiring
Shielding
CAT5
CAT5e
CAT6
Unshielded (UTP)
Solid
Shielded (STP)
Unshielded (UTP)
Stranded
Shielded (STP)
Termination
Please use EIA/TIA-568-B termination (T568B) at any time
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