9
NOTICE
1.
Adjust the 8-‐level signal level equalization control to the received HDMI signals. Dial the
Signal Level
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.
If the DVI or HDMI device requires the EDID information, please use EDID Reader/Writer
to retrieve and provide DVI or HDMI EDID information.
3.
All HDMI over CAT5 transmission distances are measured using Belden 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 1000ft 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 category cables is recommended for better
performance.
6.
To reduce the interference among the unshielded twisted pairs of wires in UTP cable, one
can use shielded STP cables to improve EMI problems, which is worse in long
transmission.
7.
Because the quality of the Cat-‐5/5e/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 CAT5
/
6 Cable Transmission
Performance rating
Type of CAT5/6 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
Содержание HE2IR-RX
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