NV4108E-A2 POE Cameras "Failed to find network host"
NV4108E-A2 POE Cameras "Failed to find network host"
I have a new Nv4108E-A2 and neither of the three cameras will display an image. I receive the error "Failed to find network host" on each one. When I remove the cameras and connect them directly to the NV4 with 5ft CAT 5 cables they work fine. The cables have been tested for correct wire pairing and continuity. The cable runs are 24 ft. 38 ft. and 72 ft.
Re: NV4108E-A2 POE Cameras "Failed to find network host"
S9 cameras new or older? If you are able to connect a camera when closer to NVR could be bad cable type, bad cable, and or the transformer is damaged and not completely failed so can work short runs. If cables are from bulk and ends added, I would test the cable and confirm that it is real copper cable. D9nt matter what the jacket says, some people put real data on fake cables.
Be Safe.
Re: NV4108E-A2 POE Cameras "Failed to find network host"
All the equipment is new less than a month. What is an S9 camera? The three cameras I have are new Amcrest 5Mp PoE. Yes, the cable is CAT 5e Riser Cable (copper), from a bulk box, and ends were added. I have been doing cable installations for a long time. Again, the cables were tested for continuity and wire pairing.
Re: NV4108E-A2 POE Cameras "Failed to find network host"
Sorry to be honest I didn't look at what was typing on my phone and S9 was So, and just as Don't was spelt wrong as well. with a 9.. Sorry there was a reflection on my phone and missed it..
About the Cameras with longer length cables then it only leaves a bad Transformer then. A bad Ethernet transformer can lead to increased signal loss, distortion, crosstalk, inadequate isolation, increased attenuation, and a poor power delivery. These issues are particularly problematic over long distances, where the natural degradation of signals due to cable length amplifies the negative effects of a faulty transformer. This can recult in the IP camera failing to establish or maintain a stable network connection, thereby preventing from functioning properly.
Can you tell me how you have your cable ran? Like are the 3 longer lengths are they Home Runs or maybe running in a Bus or Daisy Chain type run?
My guess would be that they are all Home Runs going from camera to the NVR. If this isn't how you have your system setup then I would do a fast test to see if making a direct connection would work. I do use all 3 methods for different types of Ip cameras. Most of my POE cameras are setup on a Home Run. If you happen to be using a POE Isolator I would try to see if the connection to the POE camera could be made without using the Isolator.
Yet if all other things have been done already. no isolator, and running a Home Run setup. Then only thing this leaves is the camera needs repair of the Ethernet Transformer that in your camera would be normally a 16 pin SMD part.
About the Cameras with longer length cables then it only leaves a bad Transformer then. A bad Ethernet transformer can lead to increased signal loss, distortion, crosstalk, inadequate isolation, increased attenuation, and a poor power delivery. These issues are particularly problematic over long distances, where the natural degradation of signals due to cable length amplifies the negative effects of a faulty transformer. This can recult in the IP camera failing to establish or maintain a stable network connection, thereby preventing from functioning properly.
Can you tell me how you have your cable ran? Like are the 3 longer lengths are they Home Runs or maybe running in a Bus or Daisy Chain type run?
My guess would be that they are all Home Runs going from camera to the NVR. If this isn't how you have your system setup then I would do a fast test to see if making a direct connection would work. I do use all 3 methods for different types of Ip cameras. Most of my POE cameras are setup on a Home Run. If you happen to be using a POE Isolator I would try to see if the connection to the POE camera could be made without using the Isolator.
Yet if all other things have been done already. no isolator, and running a Home Run setup. Then only thing this leaves is the camera needs repair of the Ethernet Transformer that in your camera would be normally a 16 pin SMD part.
Be Safe.
Re: NV4108E-A2 POE Cameras "Failed to find network host"
All three wires are Home Run between the NVR and cameras. I don't use PoE isolators. I cannot see this being a camera issue, but an issue with the transformer in the NV4. Next, I will measure the voltage from the NV4 to the end of each wire. Pairs 4,5 + and 7,8 -. I should see 48V correct?
Re: NV4108E-A2 POE Cameras "Failed to find network host"
The POE is active so testing with multi meter should fail. So you would need a Net Prowler, Cable Prowler or Net Chaser type tester, this will provide power type and what pins used. Along with many other things. About what pins? Well it has been awhile, but mode A using af and at format uses pairs 1,2 and 3,6 normally 1,2 is + and 3,6 would be -.
I have repaired many faulty transformer cameras. Normally caused by CCA cable,, even took a working camera from my lineup to a friend for him to use while I waited for parts for his camera, plugged it into his installed wiring and camera died, come to find out he had CCA behind wall, patch cable was real copper.
Why do you expect the NVR? The A2 is next gen NVR based off proven HS design. If NVR was at fault it wouldn't power camera even at 5ft. Where I know for fact starting stage for bad camera Transformer can work on short cable and fail on longer runs.
I have repaired many faulty transformer cameras. Normally caused by CCA cable,, even took a working camera from my lineup to a friend for him to use while I waited for parts for his camera, plugged it into his installed wiring and camera died, come to find out he had CCA behind wall, patch cable was real copper.
Why do you expect the NVR? The A2 is next gen NVR based off proven HS design. If NVR was at fault it wouldn't power camera even at 5ft. Where I know for fact starting stage for bad camera Transformer can work on short cable and fail on longer runs.
Be Safe.
Re: NV4108E-A2 POE Cameras "Failed to find network host"
My money is on faulty RJ-45 cable terminations.
Re: NV4108E-A2 POE Cameras "Failed to find network host"
I finally received the POE tester this week. When booting up I still am receiving an error message on the cameras that "Failed to Find Network Host". Each of the three cameras are automatically assigned a separate IP Address (no conflict). The POE Switch Tests showed a voltage of 52.9 VDC on each of the three CAT5e cables that are home run from the NV4, and a PSE Type of IEEE 802.3at. When conducting the POE Power Tests, with each camera connected between the POE test device and the incoming CAT5e cable, produced a result of 52.8 VDC with power fluctuating from 2.7 to 3.7 W. What is the required power needed for an Amcrest POE Camera?
Re: NV4108E-A2 POE Cameras "Failed to find network host"
I posted this earlier but it somehow disappeared. Let's try it again...
48VDC is POE voltage. A little headroom from the switch is a good thing.
Current will depend on the state of the camera with 2.7 to 3.7 watts being on the lower end demand-wise for both the camera draw and switch port load.
48VDC is POE voltage. A little headroom from the switch is a good thing.
Current will depend on the state of the camera with 2.7 to 3.7 watts being on the lower end demand-wise for both the camera draw and switch port load.
Re: NV4108E-A2 POE Cameras "Failed to find network host"
Find it hard to believe that 3 cameras would all be dead. However back to my first guess. I am going to again say that it is most likely an issue with the cameras Transformer, here is my thought.. Taking two of my cameras on a bad cable I connect and while this cable is 150 feet the first camera went offline. Connecting to a smaller known good cable 10 feet the camera was still not working. It would power up and show signs of POE in fact working but didn't ever show a IP.. I took same model POE camera and connected it to the same cable. This time before the camera powered up and died I removed it from power. I connected this camera again to same 10 feet of known good Copper cable and the camera still works. I took and connected to another known good copper cable that was 30 feet and wouldn't come on line. Again shows power to the camera but I have no access to the camera. Connecting it back to the 10 foot cable I can access the camera again..
Taking both cameras apart I found both transformers were damaged. One very black inside and the second one starting to go black but not as black as the first. Cracked open 2 of my no longer in use 841w cameras and taking the transformers from them cameras making them Wifi only now. I added the good transformers to the damged cameras and they are working again. Even ran out a 250 foot run of real copper Cat5e cable and both cameras are able to power and connect with even the 250 foot cable. My guess is that the cameras some how were either made with bad Transformers or maybe using a bad cable damaged the cameras transformers..
Taking both cameras apart I found both transformers were damaged. One very black inside and the second one starting to go black but not as black as the first. Cracked open 2 of my no longer in use 841w cameras and taking the transformers from them cameras making them Wifi only now. I added the good transformers to the damged cameras and they are working again. Even ran out a 250 foot run of real copper Cat5e cable and both cameras are able to power and connect with even the 250 foot cable. My guess is that the cameras some how were either made with bad Transformers or maybe using a bad cable damaged the cameras transformers..
Be Safe.