Sony EVI-D70 Camera Control

Conversations around originating a webcast for conference, including cameras and mixers.
davidgil-p40
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Sony EVI-D70 Camera Control

Postby davidgil-p40 » Wed Sep 16, 2009 10:15 pm

Hi All,
We've been looking at the Sony EVI-D70 the church has on the website, however I'm a little concerned about the best way to control it. I have about a 100 foot cable run that I will need to make. I'm assuming that I would need to use the RS-422 cable for that length. Does any one know if the camera includes the control software? Has anyone succesfully used this camera by interfacing RS-422 cable with a computer? Any other suggestions on controlling it (low cost)?
Thanks very much,
David

Paulbb1
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Sony EVI-D70 Camera Control

Postby Paulbb1 » Thu Sep 17, 2009 6:11 am

I have not used the RS-422 controls but have used the hand remote on one at three events. It works great. We had the camera sitting on a tripod on the 3rd clerks office and controlled it from the overflow area watching a TV.

I am also interested in the computer controls. The computer will need a RS-422 interface card to allow the communications.

russellhltn
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Postby russellhltn » Thu Sep 17, 2009 10:41 am

PaulBB1 wrote:The computer will need a RS-422 interface card to allow the communications.


There's several ways that can be done. The difference between RS-422 and RS-232 is in the physical layer. Both are serial communications using the same protocol. So a simple adapter would work at well.

The real questions is what's the cost effective way to do it.
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Paulbb1
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Sony EVI-D70 Camera Control

Postby Paulbb1 » Thu Sep 17, 2009 11:23 am

If I remember right the RS-232 connector is a D Connector 9 pin serial port. So a standard RS-232 serial card will work? Should be cheap. The problem as I see it is the putting a cable through conduit to the Library/satellite cabinet and then connecting the wires to the correct pins.

I wonder if I still have my pin removal tool?

And then there is the software. Your right is it worth it when the remote works great.

russellhltn
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Postby russellhltn » Thu Sep 17, 2009 12:39 pm

PaulBB1 wrote:If I remember right the RS-232 connector is a D Connector 9 pin serial port. So a standard RS-232 serial card will work?


With an adapter.

IIRC, the big difference between 232 and 422 is that 232 has a single ground wire and all signals reference it. 422 uses a differential pair - meaning that when one wire is driven positive, the other is driven negative. There is no "ground" line.

However, the whole concept of serial data, speed, start/stop bits, etc are all the same. So once you can adapt electrically, the higher layers of the protocol stack should work.

So your choice is to add a 422 card or to find a 232 to 422 adapter.
Have you searched the Wiki?

Try using a Google search by adding "site:tech.lds.org/wiki" to the search criteria.

rmrichesjr
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Postby rmrichesjr » Thu Sep 17, 2009 4:50 pm

RussellHltn wrote:With an adapter.

IIRC, the big difference between 232 and 422 is that 232 has a single ground wire and all signals reference it. 422 uses a differential pair - meaning that when one wire is driven positive, the other is driven negative. There is no "ground" line.

However, the whole concept of serial data, speed, start/stop bits, etc are all the same. So once you can adapt electrically, the higher layers of the protocol stack should work.

So your choice is to add a 422 card or to find a 232 to 422 adapter.


All of the above is correct. If you can't find an adapter between 232 and 422, it is pretty easy to build one. I think I have the hand-drawn schematic for the one I built several years ago. Please inform if it is needed.

russellhltn
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Postby russellhltn » Thu Sep 17, 2009 4:58 pm

I have seen at least one implementation of 422 that included tri-state/buss arrangement. But since we're looking to interface the "master", I don't think it's an issue. It would be the cameras that would go tri-state.
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rmrichesjr
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Postby rmrichesjr » Thu Sep 17, 2009 5:09 pm

RussellHltn wrote:I have seen at least one implementation of 422 that included tri-state/buss arrangement. But since we're looking to interface the "master", I don't think it's an issue. It would be the cameras that would go tri-state.


The form with the tristates is called RS-485, described in this page: http://www.rs485.com/rs485spec.html

davidgil-p40
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Postby davidgil-p40 » Thu Sep 17, 2009 5:28 pm

Thank you for all the replys. Some of you have mentioned using the hand remote. I'm assuming this has to be line-of-site to use. Is this correct? Unfortunately for me my control room is not line of site to where the camera will be.

russellhltn
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Postby russellhltn » Thu Sep 17, 2009 5:50 pm

At one time IR extenders were quite popular.
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