The iris is the adjustable opening (aperture) of a camera that controls the amount of light that is allowed through the lens. This Iris control buttons are located in the top left corner of the view and allow you to manually adjust the opening:

This option list is located along the top and in the center of the Video Playback view. The Presets option list contains preset options that are configured in the camera’s property sheet view (using the Preset Text property and the Enum dialog box. Presets are defined and actuated using the following buttons:

The Focus buttons allow you to manually ‟pull focus” in order to improve the sharpness and clarity or to change the focal target of the image. This button is located in the top right corner of the view and has two control buttons:

Pan and Tilt controls are activated by clicking directly on the video display and dragging the hand icon in the desired direction. Pan and tilt speed and direction is variable and indicated by the blue pan and tilt arrow, shown in Video Playback view (Playback Viewer) and described in described in Video indicators.

You can zoom in and out by clicking on the zoom icon that is located in the zoom bar on the right side of the view. Zoom-in by dragging the zoom icon up and zoom-out by dragging the zoom icon down. The speed of the zoom is controlled by how far up or down you move the icon and is indicated by the color changes in the zoom bar, shown in Video Playback view (Playback Viewer) and described in Video indicators.

This control incrementally speeds up the forward play speed with each click. The on -screen play indicator shows the current play speed while this function is being used.

This control incrementally speeds up the reverse play speed with each click. The on -screen play indicator shows the current play speed while this function is being used.

While playing back video, this function skips forward to the next recorded track and starts playing automatically.

While playing video, this function skips backward to the beginning of the current track and starts playing automatically.

This button-control functions to switch from a playback video display to a live video display (still in the Video Playback view), when you click the button.

This function opens the Browser Events dialog box, as shown in Figure 24 Browse Events dialog box.

Figure 24  Browse Events dialog box

This dialog box displays a 2-column tabular list of events that shows a Time Index and Description of each event. In addition to the standard table controls and functions (described in the NiagaraAX-3.x User Guide), the dialog box has the following controls:

This function opens the Time Index dialog box.

This dialog box, shown in Figure 25 Time Index dialog box, allows you to select an event according to a specific date and time in terms of day, month, year, and time. A calendar icon in the dialog box presents an interactive calendar for browsing to and selecting the desired date.

Figure 25  Time Index dialog box

This icon appears temporarily at the top left and right corners of the playback view when a ‟live” mode is selected. This indicates that the video currently displaying is ‟live” or occurring in real-time.

This indicates the current playback speed in terms of multiples of normal play speed. Each click on the Fast Play Forward button increments the speed by one multiple. Speed indications are expressed as X1, X2, X3 (times one, times two, times three) and so on.

These icons (fast-forward, skip, play, and pause) appear temporarily near the top left and right corners of the playback view any time that there is a playback state change. For example, if you click the pause button, the pause indicator icons display over the display for a few seconds to alert you that the playback has paused. When the play button is clicked, ‟play” icons display similarly.

Both pan and tilt are indicated by the blue Pan and Tilt indicator. This polygon (arrow-like) indicator is superimposed on the video image whenever you click directly on a live video image. The following parameters are indicated:

Zoom parameters are indicated by the following:

A text message displays on the screen at times to indicate the connection status.