Viewing the cameras in the study wasnt a problem as i read it, control of the mux was the problem.

DM is a good option but a very expensive one, Videoswitch do a more sensibly priced DVR with remote keyboard and im sure there are many others. Best to shop around but expect to be paying well over a grand.

I had a similar problem many years ago, and the client needed a quick fix on a tight budget.

This may not be ideal (it's just a suggestion) but will provide channel selection of cameras 1 - 16 or split screen output but it won't offer complete control of all the multiplexer functions.

So ...... if you use a remote video switcher with alarm inputs, something like the Nortek RC616 for example, with all the video inputs looped from the multiplexer (yes but, 16 cameras + 1 multiplexed display = 17 - you will need an additionel alarm switcher on channel 16 if you need the extra channel/s) then you can use a single channel telemetry transmitter at the monitoring end, and a telemetry receiver with a few extra relays thrown in if necessary, to drive the alarm contacts on the remote switcher.

Easiest configuration is to use the P/T buttons for selecting cameras 1-4 (Grp. 1), 5-8 (Grp. 2), 9-12 (Grp. 3), 13-16 (Grp. 4), and the focus / zoom voltages to drive four additional (4 Pole) relays for individual group selection.

So for example Zoom In + Up = Camera 1, + Right =2, +Down = 3, + Left =4 .... Zoom Out + Down = 7 etc,

Not terribly high tech, but it should do the job; BTW new labels for the transmitter switches may cost extra

DM Is sill the dog's in most cases.... never come across that particular problem with them, however I do find the fans a bit noisy which is why the units are stached away and keyboard use for control

So ...... if you use a remote video switcher with alarm inputs, something like the Nortek RC616 for example, with all the video inputs looped from the multiplexer  (yes but, 16 cameras + 1 multiplexed display = 17 - you will need an additionel alarm switcher on channel 16 if you need the extra channel/s) then you can use a single channel telemetry transmitter at the monitoring end, and a telemetry receiver  with a few extra relays thrown in if necessary, to drive the alarm contacts on the remote switcher.

Easiest configuration is to use the P/T buttons for selecting cameras 1-4 (Grp. 1), 5-8 (Grp. 2), 9-12 (Grp. 3), 13-16 (Grp. 4), and the focus / zoom voltages to drive four additional (4 Pole)  relays for individual group selection.

So for example Zoom In + Up = Camera 1, + Right =2, +Down = 3,  + Left =4 .... Zoom Out + Down = 7 etc,

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Could you be so kind to explain the solution in a simpler way. I really dont get it. Does this mean that i will have to change the existing multiplexer? Thanks.

I really hope if I change the Multiplexer to the type with remote keyboard, I could make the link between the Mux and the keyborad wireless and still be able to fully control the mux options. I hope this is simpler and would be glad if anyone has an idea of such tx & rx that would work. The distance between gatehouse & study is about 50mtr line of site.

tnx.

Can't say as I know of a wireless mux\keyboard option but how about a networkable DVR and wireless network?

Can't say as I know of a wireless mux\keyboard option but how about a networkable DVR and wireless network?

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kindly give the list of equipment needed for both options. there is actually a server room in the building only that there is no data port in the security house where the control equipment is. tnx.

You could use a wireless modem for the link on the keyboard, but again that would depend on the mux.

kindly give the list of equipment needed for both options. there is actually a server room in the building only that there is no data port in the security house where the control equipment is. tnx.

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Well, depends on what exactly how you want to do it. Basically, you're going to want a DVR with network port, a PC,a couple of wireless access points and some associated cables.

Not sure what the other option was, I can only see one.

We quite often fit DMs with 2 monitors, for the 2nd monitor remote from the DVR we fit an infrared extender.Point the DM remote control at it, it transmits by radio to a reciever the other end and there is a little infrared transmitter that you fix to the front of the DMs IR receiver.

Works a treat.