6
1. When adjusting the signal EQ level on the receiving unit, 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 issues that would
shorten the product’s life significantly!
2. All HDMI over CAT5 transmission distances are measured using Belden CAT5e 125MHz
UTP cable and ASTRODESIGN Video Signal Generator VG-859C.
3. The transmission length is largely affected by the type of category cables, the type of
HDMI sources, and the type of HDMI displays. The testing result shows solid UTP cables
(usually in the form of 300m or 1,000ft bulk cables) can transmit a lot longer signals
than stranded UTP cables (usually in the form of fixed length patch cords). A solid UTP
Cat-5e cable shows longer transmission range than a 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 category cables is recommended for better
performance.
5. To reduce the interference among the unshielded twisted pairs of wires in a category
cable, double shielded STP cables are better suited than unshielded UTP cables to
improve EMI problems, which is worse in long transmission.
6. Because the quality of the category 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 the 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.
ÐPerformanceRatingGuide
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
