Video Amplifier

Put them in clear, water-tight plastic bags.

OK, I'm being a jerk, but you need to provide more/better info. Do you need a splitter or an amplifier or both? "Multifunction displays" could mean a lot of th is ambiguous. On top of that, posting as "Anonymous Poster #1" significantly increases people not taking you seriously.

Mikerho is not the jerk. YOU are! Learn the etiquette of CR4. If you provide too little info, you get bad answers. If you hide behind anonymity, most of us won't give you the time of day.

Get off the Phone, you jerk!

With apologies to Mark Levin.

Would you not ask the provider of the cameras to also provide the splitter, amplifier or whatever you are after? The cameras have been your first concern and whoever provides them would be the one to ask.

Yes the cameras are my main concern. I want the video signal from cameras to not lost or distort once it get displayed on multifunction display. One of cameras is a thermal imager and other is reverse image camera. Both are for marine. I don't think you need that details about the type of information. Both are 12VDC system. what type of information required when purchasing video splitter. I asked the suppliers, they could provide me a video splitter with only one video input, and 4 video output. So I have to purchase two video splitters for cameras. I am looking for one splitter for both cameras, I have a splitter, but only for indoor, so probably not good to use for water environment or humid.

Radio Shack? FRY's? Sony? GE? TOSHIBA? It depends on who the manufacturer is and what type of cameras and displays are being used. Digital or Analog? Ethernet output or COAX?

Analog video, BNC video output

May I ask you, what type of information need to be look for deciding a right video splitter.

I think Radio Shack stores are out of business.

http://www.cctvcamerapros.com/BNC-Video-Splitter-p/vds-4008.htm

Here is a good place to start but there are numerous other sources on the web that have similar products for sale including Amazon and E-Bay. (New & used)

You must identify the size & type of coax required by your camera(s) and the display device. (Impedance, capacitance, and physical size is critical.)

You must also determine the frequency operating range and whether you need an active or passive video splitter.

If you have the Original Equipment Manufacturer name and the equipment model number you should be able to download the needed information for free from their website.

Once you know what equipment you have and what the limitations are, it is just a matter of searching for the correct cables, fittings, and/or needed adapters to get the system up and operating.

If you are going to be doing any long term recording it will be necessary to also find a compatible recorder.

There are several companies that provide free detailed technical information on this and other subjects such as OMEGA Engineering who offer free technical application manuals which discuss theory, setup, installation, and equipment compatibility.

thanks so much for your help. may I ask you about your comment, you mentioned about impedance, capacitance, physical size is critical,

would you please tell me briefly what those parameters do with choosing a proper splitter to both cameras and displays.

also regarding frequency range, do you mean splitter, cameras, and displays should be within same range of frequency.

Try these people.

you could try here also.

https://www.antennasdirect.com/store/4_output_TV_CATV-_distribution_amplifier.html

Just add an a/b switch

Nope, there's a world of difference between a video signal and a CATV signal, especially when dealing with monitors that have no RF inputs. A/B switch not required, AP wants to do simultaneous, not either/or.

You cut an attitude earlier, and it's been my experience that people who do are trying to to hide the fact that they don't, and it's usually evident in their question. In your case you don't realize that you need a mixer to bring your two camera images together before you split them out to the displays.

Combining two video images is much more complicated than splitting them. You have to ensure that both are synchronized to a common time-base, and that the chroma and level signals are properly mixed to achieve the desired results.

Although you don't care to reveal your exact use, it's relatively easy to reverse engineer your project with the sparse information that you did provide. It seems that you want to take a live video feed of an underwater scene and superimpose the thermal image from your infrared camera over it, then distribute the combined image to a number of monitors.

Systems that do that are readily available, but it seems that your poor attitude has caused my memory to go blank...tsk, tsk...now what were the names of those manufacturers???

FYI:Was doing video design circuits , If you are looking for a way to solve this issue in the component level

go to maxim or AD they have the component that will allow to design any video circuit , even the 3D

But you will need to know how to design the layout TBD

# 8 is a good answer in the box level

Thanks: daveross100@gmail.com