Overview of HDMI over twisted pair extenders

Sometimes it becomes necessary to connect one or another video device with an HDMI interface to the video signal broadcast. If the distance is not too long, a regular HDMI extension cable is used. And there are situations that you need to connect a TV and laptop when using HDMI over a long distance over 20 meters. An acceptable cord from 20-30 meters is expensive and not always possible to run. This is where a twisted-pair HDMI cable comes in.

An HDMI Twisted Pair Extender provides the latter option in cases where a standard HDMI Extender is not connected.

A signal extender or repeater is a collection of devices that can receive, process and transmit digital information further over long distances. The device looks like a small box with ports for a cord. It is located in front of the receiver.

If the twisted-pair extension cord has a size of 25-30 m, then you can use the simplest transmitters. They do not have external power, but they are non-inertial, because there is a chip inside them, which is powered via an HDMI extension cable.

The manufacturer has defined the longest video transmission distance equal to 30 m. As practice shows, the product works using a cable belonging to category 5e, in an area up to 20 m, and if the size is larger, the signal is not felt. At the same time, if you believe the reviews of some users, then even when transmitting a signal at short distances, difficulties arise.

If there is a need to use HDMI over twisted pair extension, then it is good to use high quality twisted pair copper.

If you need to transmit video over a distance of more than 20 meters, it is best to use an efficient HDMI over twisted pair cable with external feed. The manufacturer of this product has defined the transmission of 1080 r video at a distance of more than 50 m, provided that a twisted pair cable of the 6th category is used. As practice shows, the use of such a cable over a twisted pair of type 5e operates within a range of up to 45 m. Such a complete set of the receiver and transmitter allows the transmission of an infrared signal from the remote control device - this allows you to remotely control the video source.

The transmission of information over such a distance is possible due to the fact that the extender uses the TCP / IP protocol. It should be remembered here that good quality twisted pair cable should be used to transmit a signal over long distances. The one made of copper, with a conductor cross-section of more than 0.05 cm, makes it possible to transmit information over a distance of 0.1 km. If a switch is placed after 80 m, the line to which the video will be transmitted will double. In addition, this type of device makes it possible to transmit video from the platform to several receiving devices using a local network where there is a switch or router.

Consider the most common HDMI twisted pair extenders.

• 100m Wireless HDMI Extender VConn is a model that can transmit signals at a distance of 0.1 km without distortion and interference in the field of view.Activities are carried out at a frequency of 5.8 Hz. Wireless technology WHDI 802.11ac is applied. You can get information on any available display: LCD, LED and plasma panels, projectors. The device does not overheat during operation. The units should be placed in a place where there is good ventilation and there are no object obstructions that will weaken the signal transmission. The kit includes: receiver, transmitter, IR sensor, 2 batteries.

• 4K HDMI + USB KVM Twisted Pair Extender (Receiver). For the device to work, you must select the correct transmitter model. There is 4-bit switching for 16 channels. There is support for Dolby TrueHD, DTS-HD Master Audio. With the help of the device, it is possible to transmit information over a distance of 0.12 km. The optimum transmitter is HDCP 1.4.

Consider the following factors when choosing the right HDMI over twisted pair extender:

• it is recommended to choose a device of the middle price category;
• it is worth purchasing a high-speed cable with Ethernet;
• take into account the type of connectors;
• the size of the cord should be a couple of meters larger than required.

By following these guidelines, you can purchase a suitable HDMI over twisted pair extender.

For an overview of Lenkeng HDMI over twisted pair (LAN) extenders, see below.