HDC-RH401/201/101 Users Guide
19
6.2.1 Cables
IDK Corporation provides various digital cables such as HDMI, DVI, and twisted pair cables.
Please choose appropriate cables for your system configuration. For analog audio and RS-232C, please use
on processing the cable to fit the connectors.
6.2.2 Twisted pair cable
When connecting twisted pair cables to the HDC, please observe the following precautions.
・
Cat5e/Cat6 UTP/STP can be used, however, we recommend a CAT.5E HDC cable* for the twisted pair
cable which is developed by IDK to maximize quality of video transmission.
・
If using an STP cable, connect the FG connector to an earth ground source. Otherwise, the shielding
feature does not work correctly. When using a UTP cable, we still recommend using the ground
connector.
・
The shielded STP cables are less affected by interference or external noise than UTP cables.
・
The connector for twisted pair cable is as same as the connectors which are used for Ethernet (8 core
modular type connector), however, it cannot be connected and use for Ethernet because the way of data
transmission is different.
・
The maximum extension distance of Cat5e/Cat6 UTP/STP cable is the shorter maximum extension
distance of the connected HDC receiver and sink device.
・
For pin assignments, apply T568A or T568B standards for straight through wiring.
・
Do not give connection cables a strong pull. The allowable tension of the twisted pair cable is 110 N.
・
Do not bend the connection cable at a sharp angle. Keep the bend radius four times of the cable
diameter or longer.
・
Do not tie the cable tightly; leave a space allowing the cable to move slightly.
・
If you use the same cables, we recommended keeping a distance between the cables or not to place the
cables closely in parallel.
・
Keep the twisted pair cable as straight as you can. If you coil the cable, it is easily affected by noise.
・
Do not place this product in an electrically noisy environment, since high-speed signal is transmitted.
Particularly when you use a high-output radio around this device, video or audio may be interrupted.
・
If the distance between the transmitter and receiver is 100 m/328.08 feet or less, cables can be joined
using an RJ-45 plug coupler or wall outlet. Up to two cable couplers are allowed. Couplers supporting
Cat6A (10GBase-T) are recommended.
・
Following table shows extension distance by each twisted pair cable. The extension distance depending
on installation environment.
External noise
Category
Distance
Dot clock
Memo
Affected
UTP
Cat5e
30 m/98.42 ft.
<= 225 MHz
IDK recommends Cat5e STP,
Cat6 UTP/STP, or CAT.5E HDC
cable* if the extension distance
exceeds 50 m/164.04 ft.
Cat6
60 m/196.85 ft.
Less affected
STP
Cat5e
*
Cat6
60 m/196.85 ft.
