We just installed a new cat 5e cable going from our av rack to the camera, if you do some searching you can solder your own adapters to link the Sony viscapinout for db9 to rj45, and then on the camera end you make a rj45 to mini din connector using the 8 pin mini din pinout. Once that's done just take any old computer and plug in a USB serial adapter. We used control software from serial port tools website. $99 gets you the software licence for there ptz controller. This software allows you to use a joystick, save camera positions, and adjust most settings on the any Sony ptz camera. If you have more than 1 camera just run a cat 5 cable between the cameras solder on the mini dins using the Sony pinouts for camera to camera daisy chaining the signal. You can run up to 7 sony devices on one chain.
Please note that it is easier for you to start by building a db9 to camera cable, cut it in half, and than crimp on your 2 rj45 connectors on each of the halfs ensuring that all wires are terminated in the exact location of each rj45, when you install the cable be sure to terminate the cable with jacks, not the rj 45 mod connectors. This ensures that your control cable doesn't have a built in "possible point of failure. When adding more cameras to your chain, simply use the pinouts on the middle left hand side of the Immage below. Make the cable mini din to mini din, cut in half and terminate again exact locations on 2 rj45 connectors make sure to label the " din to rj45 dongles" control, cam1 in, cam1 out, cam2in ext. This is because all the dongles will have tere own separate pinouts
Also note that this pinouts works with and Sony evi camera, this covers the evi d30, d70, d80, and d100 cameras. All of which can communicate on the visca protocol.
Also note that the cameras running thru visca automatically address themselves first camera in chain is cam1, second camera in chain is cam2 ext ext...
Once your done building the visca chain, check your cameras dip switches to ensure they will " play nicely" than bring up the software. I use
Note the settings tab in the lower right hand corner, simply click that button and select the protocol they will use, Sony visca, pelco, Panasonic.... And select add camera. After that your set up to control the cameras via computer, if your going to use a joystick be sure to install Microsoft direct x before trying to control the cameras via joystick.