Here are some additional tips on operating the VTC-100 on the iCAST mini.

Transcript

In this example, what really needs to be explained are the four buttons at the bottom of the iCAST mini home page. These four buttons represent the four auto‑tracking modes of the VTC‑100. When operating the iCAST mini, you first need to enable the auto‑tracking function, then select the tracking mode you want.
When you choose either the active speaker mode or the auto framing mode, the upper section of the interface will show a dedicated set of options: Headroom, Detection Sensitivity, Lens Adjustment Frequency, and Zoom Range.
If you select either the presenter mode or the zone tracking mode, the upper section will instead show Figure Size, Select Subject, Placement, and AT Speed.
Let’s circle back to the four options—Headroom, Detection Sensitivity, Lens Adjustment Frequency, and Zoom Range. Headroom refers to how much space is left above a person’s head in the frame; the higher the number, the more space you’ll see. Detection Sensitivity and Lens Adjustment Frequency should be discussed together, the higher the values, the more sensitive the system becomes and the more frequently it adjusts. If these values are set too high, even the slightest movement will trigger the camera to reposition, making it hard to get a stable sho. Zoom Range controls how tight the close‑up is; the higher the number, the larger the person appears in the frame.
One more detail: in active speaker mode, if the far end participant is speaking while the local environment is silent, the VTC‑100 will automatically switch to the auto framing mode.