Thanks Dave!!

had a similar problem the other day, changing surveyor 2000s from vicon to DM unit. even though using up the coax telemetry there needs to be a data link from the bbv to the dome, hence the ip rated box for the bbv. On speaking to bbv and checking their manual all domes must be addressed as 2, seems odd but they reckon there was a software mistake and thats the result, 2 instead of 1.

Im sure you have alarm inputs on the 2060 board and if i remember rightly there may also be a 12v aux output on the board, Ive done a similar thing with 2050 domes and gjd opal elites instead of redwalls, works great and a lot more economical.

Give the guys at bbv a call their very helpful and are quite happy to fax additional paperwork.

This is a really common question in DM support, and probably BBV too!

The RX100 converts coax telem to serial telem, and it always sees the camera as camera 1, so the address switches must be set to Blue 0, Yellow 1. The controllers must be set to use BBV up the coax.

The alarm inputs on the RX100 simply act as "goto presets", from preset 1 to preset 4. So alarm contact 1 sends the dome to preset 1, contact 2 to preset 2 and so on.

There are several advantages and disadvantages to these over wiring alarms back to the controller... advantages - you can keep the wiring and PIRs closer to the head, it's simple to set up. Disadvantages - you don't get any record on the controller of the event, and you don't have any control over what preset the dome is sent to.

Thanks guys for all the suggestions, so far i have now established that the bbvrx100 is talking to the dennard 2060 head. this has been proved by shorting the test pins on the rx100.

the problem appears to be the 20ma twisted pair, cable checked and all ok. The 20ma serial data to the rx100 does not appear to be signalling the board. i have some software on the the way to check the videoswitch's 20ma output so fingers crossed. Dave at bbv very helpfull.

jon