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!
Pianist schrieb:
What would speak against HD-SDI?Nothing at all! SDI is great, and Hikvision has very good SDI cameras. I recently worked on a project that involved a lot of coaxial cable embedded in concrete. I use coaxial cable or 12G-SDI, for example, for preview monitors in home theaters or for longer cable runs. However, the cables need to be of good quality; if necessary, I would borrow some from Amazon and test them first.