The network cable tester is getting quieter and quieter, why

I recommend that you use the method of elimination:

1. Listen with headphones first, if you turn the volume to the maximum or very small, it is a problem with the computer's sound card; If you hear loud voices from left to right, you are sure that there is something wrong with the speaker.

It's best to right-click on the speaker and select "Turn on volume control" to adjust it.

And the premise is that you put it, it must have good sound quality, preferably in *** format, from the above**some good **, because the test must be a good sound source, you can change the song to listen.

2. Change an audio cable, test with headphones to make sure that the audio cable and sound card are fine, then remove the headphones, connect the computer with your speaker, right-click on the small speaker, turn on the volume control, pay attention to the balance of the left and right speakers, be sure to be in the middle, turn on all the volume to the maximum, listen to whether the volume of the speaker has become larger, if it is still an old problem, that is, there is a problem with the speaker, if this situation occurs, it is recommended that you change a set of subwoofer audio. Now the subwoofer sound combination set in the electronic market is very cheap, about more than 200 can buy a set of pretty good audio, you have to choose it. When you buy it, it is most important to listen to it, and then buy it when you feel good, you can't just ask for a loud sound, you must know that the quality of the sound is much more important than the size of the sound.

Speakers with poor sound quality will not last too long.

There is also the current sound of your speaker, first determine whether there are other high-power electrical appliances plugged into the speaker's power socket, which can be plugged into the same plug-in board as the computer's power supply.

Secondly, your computer software is set, right-click on the small speaker, turn on the volume control, and tick the "mute" of the "line input" item, which is to cancel the sound of line input, and see if there is still a current sound.

The battery is dead, big brother, do you still need to ask? It's rarely going to break.

A ringing means that the signal being sent and the line you are detecting are on the same network cable.

But whether it is through or not is whether the wiring method at both ends is correct.

It is very simple, it is used to measure whether the ** line is connected normally, and the principle of testing the network cable is the same.

It's just that the head of the ** cable is different from the head of the network cable, it is smaller, and there are only four cores, and one only uses two of the cores (the two in the middle).

You can use the line sapper, that thing is much easier to use than your line finder, first connect one end of the line finder with the computer network cable that is not connected to the network, and then go to the computer room to find the corresponding network cable.

The network cable tester is next to the computer at one end, and the other main one is brought to the computer room to see if the indicator light will be on, and the IP of the computer is ping-t to see.

The network cable at this end of the computer is connected to the wire finder, and the detector is used in the computer room to detect the end of the alarm when it is close to the alarm.

Look at the switch, etc., the one that keeps flashing or doesn't light up is not the wire.

Oh, because you only use these four network cables, although there are generally eight network cables, but only these four are useful, so some manufacturers only do these four when producing.

Because only 100m 1236 transmits signals. Common routers are 100m, so only four wires are bright. At 1000m, all eight lines are lit.

The router is secondary, and there are only 4 cores on the interface.

No, it should be that the crystal head is not pressed well.

Network cable - professional point called twisted pair cable - the network connection line is generally divided into direct connection line and cross line, direct connection line is used for network card and hub (hub) or network switch connection; Crossover wires are used for connections between two NICs or cascading between two hubs. No matter what kind of cable, only four-core wires are useful, in which there is a pair, and 3 and 6 are a pair, which are used to receive and send data respectively; The rest is useless, that is to say, when making thread, it is completely possible to make only four cores, and the other four cores can be pinched off or used for it.

If the cable itself is fine, and only these three wires are lit up when you test, it means that there may be a problem with the router, try another port or router.

Adopt Oh landlord!! Is it easy for me to stay in the middle of the night??? Bonus points、、、 although it is copied!! At the very least, I'm honest.

A network cable 123 6 passes can you see if it is 12345678 In addition to the white orange orange white green green other than the line that does not pass, although it is said that as long as the white orange orange white green green green pass other can not pass, but either it will not pass or it will be all passed.

In your case, in addition to white-orange, orange, white-green, green, there is no pass, so some machines only read white-orange, orange, white-green, green wire, you can get on, and some machines network cards are not good.

It's a matter of thread, you can redo the head or pinch the white-blue-blue and white-brown brown.

The resistance is large, and there is a battery in the line tester, and the current and voltage are all consumed by the resistor.

The impedance of the network cable and the audio cable are different, and the substitution may not affect the short distance, but the long distance will have an effect.

The copper wire of the network cable is very thin, which is easy to cause large line loss,, related!

Reason: The sorting of the 8 cores in the network cable is incorrect, and the full light of the network cable can only prove that the 8 cores of the network cable are energized.

Solution: Redo the crystal head, sort according to the line order of the crystal head at the other end of the network cable, if the order of the crystal head at the other end of the network cable cannot be determined, you can first sort according to the national standard T568B standard "orange white, orange, green and white, blue, blue and white, green, brown and white, brown".

Tools: Ethernet cable; Crystal head; network pliers;

The crystal head is made as follows:

1. Peel off the outer skin of the network cable first, you can use the blade of the network cable pliers or scissors and other tools, as long as the outer skin is peeled off.

2. After peeling off the outer skin, first check whether the internal 8 cores are damaged when they are just peeled.

3. Then sort the 8 cores according to the order of the crystal head at the other end, or according to the line order of "orange white, orange, green white, blue, blue and white, green, brown and white, brown".

4. Cut the wire core together for easy insertion into the crystal head.

5. Insert the crystal head and press to the end.

6. Then insert the crystal head into the network card of the network cable plier and press hard.

7. The crystal head of the network cable is completed.

The lights are on and you can't get online, reason:

1. Network cable sequence problem;

2. Network card problem of computer host (network card failure will cause network display to be disconnected);

3. Network equipment problems (such as connected cats, routers, etc.);

4. Problems with the motherboard of the computer host (because most of the network cards are integrated on the motherboard, the failure of the motherboard will cause the network card to be unavailable).

Solution: 1. It is recommended to make network cables according to the standard line sequence, and the standard line sequence is as follows.

568A standard line sequence: white-green, green, white-orange, blue, white-blue, orange, white-brown, brown.

568B standard line sequence: white orange, orange, white green, blue, white blue, green, white brown, brown;

2. To replace the computer host network card, it is recommended to send it to the computer after-sales maintenance point for replacement, or directly purchase an independent network card for installation;

3. Reconnect to the network after replacing the modem, routers and other devices connected to the computer;

4. Send the computer motherboard to the after-sales maintenance point for testing to eliminate the motherboard fault, if the problem is serious, you may need to replace the motherboard with a new motherboard.

Is the wiring the right way? White Table, Orange, White-Green, Blue, White-Blue, Green, Brown, White-Brown, Both ends should be made the same.

No matter how the lines are arranged, as long as you use a line tester, the lights on both sides are on in order, and you can use it.

If you have no problem measuring the line, if all 8 lights are passed, then it is 100% that there is a problem with the interface on the host. Borrow someone else's good network cable to try it, or you take your network cable to someone else's house to try it, or connect the current cable to shake the crystal head of your network cable, you see the state of the computer, whether it can be connected sometimes. If so, the contact is not very good.

With the above methods, you can easily determine the situation.

The light is on, the question is, is your line sequence correct? Crossed or parallel?

It's best to try this cable on someone else's computer.

I don't want to say anything else, it's simple.

My legion!

Use a line tester to test the network cable, to see if the 8 lights are lit in order, if there is a jump in the middle, it means that the crystal heads at both ends are not made according to the same standard, and the crystal heads at both ends must be guaranteed to be the same standard practice, and the network equipment ports can be connected when they are intact.

It should be that the switch port is damaged.

There is a problem with the network cable interface of the motherboard on the host.

Yes, if one end is connected to a network switch, you can use the larger end to connect directly to the test cable. The normal distance is about 100 meters, if the network cable is too poor, it is difficult to say, 50 meters may not be bright.

It cannot be used separately. If the product can be used separately, is it necessary to set the main and secondary ends?

In the supplementary question, it seems that the No. 4 core is not bright, which means that there is no good termination. I can only re-connect the lower end of the crystal head. If the No. 4 core is not yet bright, then you have to wonder if there is something wrong with this tester.