The German news network system limited company brings the computer lengthened product true solution this question. The computer lengthens the product, also was called said the KVM extender, the network extender as well as the extender. The German news recently first promotes each kind of computer in China to lengthen the control product, becomes the domestic computer to lengthen the product leading supplier, the effective solution has involved profession industry control aspect the and so on the electric power, railroad, steel and iron bottleneck question.

1. any is the computer lengthens the product
1. The computer lengthens the product is can to equipment and so on computer, server, workstation outside suppose (I/O input-output device) to carry on point-to-point lengthening to the certain distance equipment. I/O including reveals the card, USB, the keyboard mouse, the audio frequency microphone, the string mouth, and the mouth equipment and so on.
2. The computer lengthens the product generally to pair the appearance, a transmitting end receiving end, the transmitting end carries on the I/O equipment signal the centralism, the receiving end in the I/O data which receives carries on the return to original state.

1. lengthens equipment the type
1. Carries on the division according to the transmission medium to be allowed to divide into the optical fiber to lengthen the equipment and UTP lengthens the equipment, the private line cable lengthens the equipment; (Note: Lengthens the equipment through the private line cable connection because line cable too thick technology backwardness therefore has been already eliminated)

American AVOCENT LV1000R connection diagram

EV200 product demonstration chart

The English ADDER multi- monitors lengthen the product connection diagram

2. Divides according to supply oscillator processing may divide into the numeral to lengthen the equipment and the simulation lengthens the equipment.

The numeral lengthens the equipment connection diagram

2. lengthens the parameter or the target which the equipment cared about
Because lengthens the product domestically in is a new product, then, what parameter the choice lengthens the equipment to have to pay attention to and to care about and the target?
1. Must pay attention to the computer I/O connection choice which oneself must lengthen, if chooses the equipment which all connections all can meet, then the price is quite high, if I choose only have the video frequency and the keyboard mouse lengthen the product, then the price must be much cheaper;
2. The product permits longest extending length. Longest extending length was a count for much target, the distance longer to lengthens the equipment the request to be higher, is away from directly has also decided the price;
3. Must achieve the video frequency resolution and renovating rate, the different quality the video frequency resolution and renovating rate which lengthens the equipment to be able to achieve is dissimilar, similarly, video frequency resolution higher, extends length far, usually said the price is also higher;
4. Lengthens the equipment the medium. Medium standard higher, can obtain the picture quality and the performance are also better.

3. lengthens the equipment the application
1. Working conditions bad place application. In the factory workshop, the work site, the industry control computer frequently places oneself the environment bad operational site, the operator must in the bad environment the work. Like this not only could has had the threat to operator's life safety and the health, simultaneously also reduced the working efficiency. The use will lengthen the equipment to be allowed effectively to solve these problems - to operate the end to lengthen to the peaceful neat handling room, not only will be allowed to improve operator's working conditions, moreover enormous enhancement working efficiency;
2. Needs to concentrate depositing in the server unit's application. The operation end and the computer server need to separate the place are very many, like electric power dispatch, water conservation dispatch, monitoring center and so on;
3. Data security aspect application. If logarithm and so on research and development center according to the extremely sensitive unit, the regular meeting outside the computer which uses for the staff supposes carries on the strict control and the management, prevents the data copy. The computer lengthens the equipment to be allowed to lengthen the keyboard mouse monitor signal, the person and the main engine separate, causes the operator to carry on the jurisdiction establishment, causes it to be unable secretly outside the copy material as well as other jurisdiction operation.
In 4. present markets lengthens the equipment big ratio to spell

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Note: All equipment all do not have another external standard note biggest resolution and renovating rate, because the different length can achieve the resolution and renovating rate is dissimilar