LevelOne HVE-9005 - Manual (Page 10)

8
NOTICE
1. All HDMI over CAT5 transmission distances are measured using Belden 1583A CAT5e
125MHz UTP cable and ASTRODESIGN Video Signal Generator VG-859C & VG-870B.
2. Incorrect placement of IR Blaster and Receiver may result in the failure of the IR extenders.
Please check carefully before plugging in the IR extender to the respective IR sockets.
Warranty will not cover the damage.
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 Category Cable Transmission
Performance rating Type of category 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