Good day!
It’s time for me to prepare the third generation of video surveillance. Each camera location is connected with a green coaxial cable (Inka 4637 L with 75 Ohms, cable lengths between 15 and 25 meters (approximately 16 to 27 yards)), and there is an NYM cable 3x1.5 for power supply running from camera to camera.
In 1999, I started with inexpensive circuit board cameras from Samsung, which were quite noisy at night. Around 2010, I replaced them with Ikegami black and white cameras (analog composite video signal) in weatherproof housings. All cameras are installed under the eaves anyhow. Everything is recorded for about four weeks and then overwritten.
Now, after roughly 15 years of continuous operation, the first camera has failed. I’m wondering if there have been any significant technological advances during this long period. I definitely don’t have any other wiring options, so no network cables. Are there more modern cameras (either dome housings or the same form factor as before, so I could reuse the housings), possibly in HD and color, and could transmission via HD-SDI be achieved? Or is that not feasible?
Also, would it make sense to add IR LED illumination in the invisible spectrum alongside the existing outdoor lighting in the visible spectrum? The sharpness at night leaves something to be desired, and the 50 Hz from the power supply causes some interference in the analog image. The better the image quality, the easier it would be to implement automatic analysis.
It seems there isn’t a dedicated section for security technology here, is there?
Thank you!
It’s time for me to prepare the third generation of video surveillance. Each camera location is connected with a green coaxial cable (Inka 4637 L with 75 Ohms, cable lengths between 15 and 25 meters (approximately 16 to 27 yards)), and there is an NYM cable 3x1.5 for power supply running from camera to camera.
In 1999, I started with inexpensive circuit board cameras from Samsung, which were quite noisy at night. Around 2010, I replaced them with Ikegami black and white cameras (analog composite video signal) in weatherproof housings. All cameras are installed under the eaves anyhow. Everything is recorded for about four weeks and then overwritten.
Now, after roughly 15 years of continuous operation, the first camera has failed. I’m wondering if there have been any significant technological advances during this long period. I definitely don’t have any other wiring options, so no network cables. Are there more modern cameras (either dome housings or the same form factor as before, so I could reuse the housings), possibly in HD and color, and could transmission via HD-SDI be achieved? Or is that not feasible?
Also, would it make sense to add IR LED illumination in the invisible spectrum alongside the existing outdoor lighting in the visible spectrum? The sharpness at night leaves something to be desired, and the 50 Hz from the power supply causes some interference in the analog image. The better the image quality, the easier it would be to implement automatic analysis.
It seems there isn’t a dedicated section for security technology here, is there?
Thank you!
Anyone building now and installing security systems no longer runs coaxial cable. There is likely very little experience with this outdated technology here in the forum.
Especially in this area, there has probably been a huge leap from analog to digital signals.
My amateur solution:
It is probably most sensible to use power supply lines and rely on Wi-Fi.
Alternatively, one could try coax-to-RJ45 adapters. I cannot say what data capacity is possible through them.
Otherwise, install new cabling.
Especially in this area, there has probably been a huge leap from analog to digital signals.
My amateur solution:
It is probably most sensible to use power supply lines and rely on Wi-Fi.
Alternatively, one could try coax-to-RJ45 adapters. I cannot say what data capacity is possible through them.
Otherwise, install new cabling.
According to Wikipedia, this seems to be an alternative in the field of video surveillance to IP systems, so you don’t have to replace everything.
So, this is exactly your case.
However, unless a specialist is around, you will hardly find any practical experience. In this case, a professional consultant is probably advisable.
So, this is exactly your case.
However, unless a specialist is around, you will hardly find any practical experience. In this case, a professional consultant is probably advisable.
In the broadcast sector, HD-SDI is definitely the standard. I’m now getting in touch with a specialist company from which I might purchase the cameras. Apparently, there are still some available ("last stock," according to the manufacturer). However, I’m also open to other solutions. Overall, I consider image quality more important than having as many technical features as possible, such as PTZ or integrated IR lighting. Zoom always comes at the expense of the lenses’ light sensitivity, and besides, no one will be there around the clock to operate anything.