When you have purchased a tracking license for the CM93, it will by default track a person over its complete theoretical Pan and tilt range. In some cases this might not be optimal. For instance if you have a technical section in the room that you want to hide, or you solely want to track a certain area on stage.
Defining a zone with the WebGUI
We are working on making this possible in the WebGUI of the camera, but this technique can already be implemented over VISCA. Please see our article on how to communicate with your camera over VISCA.
Defining a zone via VISCA
Define for yourself an area you want to use. Move the camera to the outer bottom/left corner you want to see on screen. Ask the camera for it's Pan Tilt Position with this command:
Pan-tiltPosInq | 8x 09 06 12 FF | 90 50 0w 0w 0w 0w 0z 0z 0z 0z FF | wwww: Pan Position zzzz: Tilt Position |
Note the response of this position, for instance: {90}{50}{0F}{0E}{00}{0A}{0F}{0F}{01}{09}{FF}
Next, move your camera to the outer top/right corner you want to see on screen. Ask the camera again for it's position with the same command and note the response of this position, for instance: {90}{50}{0F}{0F}{0E}{0B}{0F}{0F}{06}{05}{FF}
Now we can set the limits:
Pan_tiltLimitSet | LimitSet | 8x 01 06 07 00 0W 0Y 0Y 0Y 0Y 0Z 0Z 0Z 0Z FF | W: 1 UpRight 0: Down-Left YYYY: Pan Limit Position ZZZZ: Tilt Position |
Our command for bottom/left would look like this: 81 01 06 07 00 00 0F 0E 00 0A 0F 0F 01 09 FF
Our command for top/right would look like this: 81 01 06 07 00 01 0F 0F 0E 0B 0F 0F 06 05 FF
Now the CM93 has a limit to how far the camera can move, ergo also a limit to where the tracking can go.
To remove the limit from your camera, we need to run the following command:
Pan_tiltLimitSet | LimitClear | 8x 01 06 07 01 0W 07 0F 0F 0F 07 0F 0F 0F FF | W: 1 UpRight 0: Down-Left YYYY: Pan Limit Position ZZZZ: Tilt Position |
Our command for to clear the limit look like this:
For removing the bottom/left limit: 81 01 06 07 01 00 07 0F 0F 0F 07 0F 0F 0F FF
For removing the top/right limit: 81 01 06 07 01 01 07 0F 0F 0F 07 0F 0F 0F FF