1) Choose an encoder with a looping output (I know, these are getting harder to find)
2) How far are the cable runs? Are you doing any Up The Coax control? If the runs are fairly short and you are not using up the coax control, use a splitter
or a large amp, such as this 16 in, 32 out:
Check to see if the encoder supports switchable termination or possibly the matrix. Some have allowed it in the past. It's better to loop but it would maintain proper termination.
Greg - did you find a solution?
We have the same need to encode the analog CCTV input without disturbing its connection to the DVR.
We're thinking of using https://www.amazon.com/gp/product/B00VG631NU
we do offer various video distributors. Please take a look at:
IPVMU Certified | 10/08/16 10:20pm
Splitters, TEE's woooo this is not for me.................
Undisclosed #3 is correct that you can loop Analog feeds through a DX8100 without need of a Distribution Amplifier (which is the term everyone was hunting for but never specifically mentioned).
It's important to note however that the DX8100 is not a DA and doesn't amplify the loop-through signal. In most cases this is fine, and it's what the DX8100 was designed to do, but depending on cable quality and length, you may wish to consider purchasing a DA or "Video Distributor" as referenced.
Side note, the DX8100 was discontinued years ago, and Pelco's entire Matrix line was also discontinued last year.