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Operation modes of the video capture cards’ ADC

ADC operation mode is defined determined by the number of processed and digitized video signals. There are two modes:

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To disable the Camera objects that correspond to the idle video channels in Axxon PSIM, do the following:

1. Define Determine the numbers of the idle video capture channels (taking into account BNC plug numbering).
2. Go to the Hardware tab in the System settings window.
3. In the object tree on the Hardware tab, select the Camera object created before, with the same channel number as the BNC plug (idle channel). The settings panel for the selected object is displayed on the right of the Hardware tab.
4. Make sure that video signal isn't displayed in the video surveillance window (1).
   
   The display of the video signal in the video field indicates that the Camera object matches another video channel.
5. Specify the number of the video channel in the Channel number drop-down list on the Basic settings tab (2). Match the Camera object with the channel number, which corresponds to the BNC plug number and the Camera object number, or scan for a Camera object matched with the required channel number.
6. Set the Disable checkbox (3).
7. Click the Apply button.

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Actual frame rate

We recommend defining determining the actual frame rate of video signal digitization and then setting up the frame rate for video signals from video surveillance system cameras.

You must perform frame rate setup if frame rates of video signals from one or more cameras don't meet the requirements.

Actual frame rates are defined determined for each camera individually.

To define specify the actual frame rate for a selected camera, do the following:

1. Configure the Video surveillance monitor (see Configuring video display on Video Surveillance Monitor);
2. Enable the Debug mode in Axxon PSIM using the tweaki.exe utility (see TweakiThe tweaki.exe utility for advanced setup of the Axxon PSIM software system, The Settings settings panel of the Axxon PSIM Base system section).

As a result, the current frame rates of the digitized video signals are displayed directly in the Video surveillance monitor. To get information about the frame rate of the video signal from the selected camera, display the Surveillance window corresponding to the selected camera in the Video surveillance monitor and activate this window by clicking it with the left mouse button. A window with video signal information is displayed in the upper right corner:

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Note that this information window displays initial data about the video stream from the camera or from the archive transmitted to the Video surveillance monitor. The actual displayed frame rate of the video stream can be different, see Displaying Display of information about a video stream on top of a video.

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1. Go to the Hardware tab in the System settings window (1).
2. In the objects tree on the Hardware tab, select the Video capture device object created before that corresponds to the configured ADC of the video capture card (2). The settings panel for the selected object is displayed in the right part of the Hardware tab.
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3. If it is necessary to increase the total frame rate up to the maximum allowed value, move the Rate slider to the max position (3).
4. If it is necessary to reduce the total frame rate to the minimum allowed value, move the Rate slider to the min position. The minimum total frame rate of video signals, digitized and processed by a selected ADC, is three times lower than the maximum allowed one.
5. If it is necessary to return the default decimation settings, move the Rate slider to the middle position. The default total frame rate is two times lower than the maximum allowed one.
6. Click the Apply button (4).
7. Close the System settings window and restart Axxon PSIM.

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Task. Video signals on Camera 1 and Camera 5 must be digitized with an increased frame rate.

Initial data. The card has four ADCs. They are matched to four Video capture device objects in the object tree. The video capture card may have up to 16 cameras connected to it. 12 cameras are actually connected to the video capture card. The objects matched to the remaining four cameras are disabled. Each of the three ADCs, matched to the Video capture device 1, Video capture device 2, and Video capture device 4 objects, is configured to digitize the signals from four cameras. The ADC, matched to the Video capture device 3 object, isn't configured to digitize the signals from any camera. An example of the object tree is given in figure A.

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