In the original 9 channel monitoring, after 4 monitoring heads have been installed, I want to add 2

What you said won't be displayed Is the image not displayed Are you sure your camera is good Do you also supply power to the camera Is the power supply normal These will lead to no ** signal I don't understand the station message.

The digital DVR or capture card you use.

Summary. That one has a problem to check the network cable: whether it is broken, whether the connector is loose, the line tester to check whether the network cable is through the power supply:

Generally speaking, the surveillance camera is DC 12V power supply (or POE power supply, the network cable of this power supply) is measured at 12V DC and 12V at no-load load. Video recorder: whether the channel is occupied, whether there is a conflict in the IP, if it is a coaxial cable connection, see if the contact between the end of the wire is not good.

Measure the voltage. Surveillance, 4 cameras can only show three, what's going on?

That one has a problem to check the network cable: whether it is a broken cave line, whether the joint is loose, the line tester to measure whether the network cable is checked by the power supply: generally speaking, the surveillance camera is DC 12V power supply (or POE power supply, this way of power supply check network cable) The voltage is 12V DC, and the no-load load is 12V.

Video recorder: whether the channel is occupied by the lease, whether there is a conflict in the IP If it is a coaxial cable connection, see if the contact is not good. Measure the voltage.

Investigation method, 1. See if the camera without ** shoots the state with electricity, if there is no electricity, connect it; 2. Look at whether the network port light of the camera (network camera) is on, simulate looking directly at the light in front of the camera, if it is not on, it must be a problem with the network port or power supply and equipment; 3. If the gods are bright, the analog camera, pull the connector and reconnect it, the network camera needs to look at the IP address through IE or tools. The most important thing is to try if the one that doesn't show is broken, and I wish you a happy life!

Investigation method, 1. See if the camera without ** shoots the state with electricity, if there is no electricity, connect it; 2. Look at whether the network port light of the camera (network camera) is on, simulate looking directly at the light in front of the camera, if it is not on, it must be a problem with the network port or power supply and equipment; 3. If the gods are bright, the analog camera, pull the connector and reconnect it, the network camera needs to look at the IP address through IE or tools. The most important thing is to try if the one that doesn't show is broken, and I wish you a happy life!

Summary. It means that the network with a monitoring head is not connected, and it is necessary to check whether the camera is powered enough and whether the connected network cable or optical fiber is interrupted.

Surveillance, 4 cameras can only show three, what's going on?

Hello dear! I have seen your question on my side and am trying to sort out the answer, and I will answer you later, please wait a moment

What is the matter with 4 surveillance cameras showing 3?

What is the matter with 4 surveillance cameras showing 3?

What about people? Hello dear! We will be happy to answer your questions, based on your questions:

Surveillance, 4 cameras can only show three, what's going on? 。Here's the answer to you:

It is said that Heng has a monitoring head that does not have a network, so check that the camera is enough to have power, and whether the network cable or optical fiber connected to the signal is interrupted.

Hello dear! We are happy to answer your question, according to your question: surveillance, 4 cameras can only show what is going on with the balance of three?

The reply here to you is: it means that the network with a monitoring head is blocked, and you should check that the camera is powered, and whether the connected network cable or optical fiber is interrupted.

I have four cameras at home, and now one of them is not displayed, and the infrared light is not bright.

It means that the network with a monitoring head is not connected, and it is necessary to check whether the camera is powered enough and whether the connected network cable or optical fiber is interrupted.

Summary. Check in turn to find out the problem, first of all, whether the 20 cameras share a power supply, if so, and this power supply is bad, it will cause individual black screens; Secondly, check the BNC head of the camera outlet line and the incoming line of the hard disk recorder and the middle line; Then to see if the camera is broken, you can insert the head of the black screen into the cable hole of the DVR with the image to judge; Finally, to determine whether the video recorder is broken, you can insert the head with the image all the way into the one without the image to try, and you will know if the video recorder is wrong.

The surveillance system has a total of 20 cameras, and only 19 can be displayed.

This question is up to me, it takes a little time to type, so please be patient.

Ok thanks!

Check and find out the problem in turn, first of all, the 20 cameras do not share a power supply, if so, and this power supply is bad, it will cause individual black screens; Ant Kuan secondly, check the BNC head of the camera outlet and the incoming line of the hard disk recorder and the middle line; Then to see if the camera is broken, you can insert the head of the black screen into the DVR with the image to judge the boring and bright cable hole; Finally, to determine whether the video recorder is broken, you can insert the head with the image all the way into the one without the image to try, and you will know if the video recorder is wrong.

The camera is no problem next to the virtual bucket,The pin key on the display screen shows that these 20 have signals,Unplug a camera and the other has an image,It is a smart display19,Can't display it all,I'm a new poor rubber for a 24-port switch。

That should be a problem with the power supply.

That should be a problem with the power supply.

It is recommended that you contact the maintenance staff to come and have a look, sorry that I didn't help you.

It's okay, thank you.

Hello dear, the camera monitors 12 heads, there are two monitoring points are not ** There are many other normal reasons, first of all, see if there is a problem with the camera, whether the power supply and BNC are connected, and then see if the driver of the capture card is installed. If you are using a DVR, you have to see if there is a problem with the DVR. If the display is not **, it is generally due to the network not being connected, disturbing or IP conflicting.

If there was one before, restart the route and reassign the IP. If it is newly installed, check whether there is a new IPC assigned IP in the router to see if it can go online. If there is a fault, it is generally divided into the following types:

1. The monitoring line connected to the router is faulty. If you're using wireless, consider the signal. 2. The router does not turn on the DMZ function.

If it is a smart monitor (a single monitor, no surveillance recorder is required), consider whether the ID is normal. 3. The router freezes. Just restart your router.

4. Broadband hangs in the operator's server. You can contact the operator to inquire about the fault. 5. Broadband arrears.

6. Part of the monitoring of the slow pure self-bringed, or self-registered DDNS to the Li carry period.

Surveillance, 4 cameras can only show three, what's going on?

Hello dear, according to your description, monitoring, 4 cameras can only show three what's going on, the reasons and solutions are as follows: 1. If the monitoring is a computer host that uses a monitoring card. You can restart the computer, and the installation of monitoring cards will require the monitoring software to be started when the computer starts.

2. Try to find the icon of the camera on the desktop or in the "Start Menu", and double-click it to run. 3. If the monitoring is viewed remotely, the intranet is also the same, and it is necessary to go to the monitoring host and manually plug and unplug the power supply. 4. If you use the computer host with the monitoring card, you need to press the power on and off button again.

1. There is an inverted triangle at the icon in the lower right corner, which can be seen by clicking on the inverted triangle; 2. Start, all programs, find the monitoring program inside, click to open it.

Summary. Check whether it is a power supply problem, check whether the power cord is broken, and if so, you need to replace a power cord. 2. If the power cord is not in good contact, make the socket of the power supply tighter.

3. It is also possible that the surveillance camera is broken, and it can generally be repaired. If it can't be repaired, you can replace a surveillance camera 4, if it is not a problem with the above hardware, there may be a network problem, and the signal of the network may not be good. It is also possible that the network is disconnected, at this time, as long as the network is stabilized, the offline problem can be solved.

There is no electricity or there is a problem with the power supply.

I'm sorry I don't understand, but can you elaborate on that?

Check whether it is a power supply problem, check whether the power cord is broken, and if so, you need to replace a power cord. 2. If the power cord is not in good contact, make the socket of the power supply tighter. 3. It is also possible that the surveillance camera is broken, and it can generally be repaired.

If it can't be repaired, you can replace a surveillance camera 4, if it is not a problem with the above hardware, there may be a network problem and respect, maybe the signal of the network is not good. It is also possible that the network is disconnected, at this time, as long as the network is stabilized, the offline problem can be solved.

Summary. It may be that one of the cameras is faulty or has been removed, so that only three cameras can be displayed on the display. You may also want to check that your monitoring system is set up and connected correctly. I hope I can help the little master<>

You can't see it just by looking at this **<>

Surveillance, 4 cameras can only show three, what's going on?

What's going on.

But the old ant can be because one of the cameras has been dismantled or removed, resulting in only three cameras being displayed on the display. You may also want to check that your monitoring system is set up and connected correctly. I hope I can help the little master<>

You can't see it just by looking at this **<>