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Ninox Hardware User Manual
9
Troubleshooting, Fault Diagnosis
9.1 Optimize Shutter time, Gamma and Gain settings
9.1.1 Overexposed image
In the case of an overexposed image (bright spots/glare) the following procedure can be followed, in
order, to optimize the video quality.
1. Begin by setting the gain to 0
2. Reduce the shutter time by increasing the shutter time divisor to further remove any
bright/glaring spots in the video
3. Once the bright spots have been removed, the gamma value can be adjusted to correct the
color representation and brighten dark areas in the video
Note: Best rule of thumb is to keep the gain value as low as possible while adjusting the shutter time
to remove bright/glaring spots.
9.1.2 Motion Blurring
In the case of a blurred video during high speed movements, the shutter time of the camera needs to
be reduced. This is assuming the lens has been fully focused in a static view.
Reducing the shutter time will reduce the amount of motion blur in the video. This is done by
increasing the "Shutter Time" divisor value. Shutter time values will automatically change when a
frame rate is selected. These values can be further increased to reduce any video motion blur.
9.2 Freezing or missed video frames
9.2.1 During real-time viewing
In the case where the video is freezing while viewing real-time, the likely issue is the USB
communication.
Potential solutions:
Check if USB suspend is disabled (Section 11.2)
●
Make sure the camera is plugged into a USB3 port
●
Do not use more than two cameras per USB3 controller or USB hub
●
Reduce the frame rate or resolution
●
9.2.2 Post video capture (saved video file)
During video recording, the cameras can heavily stress a computer's CPU and GPU. If the computer
CPU and GPU do not meet required specifications, video frames will be missed/lost in the recorded
video file. In the case where video freezing is only seen after the video has been recorded, the most
likely issues is poor computer performance.
Potential solutions:
Check if the CPU and GPU settings have been correctly set as defined in Section 11.2
●
Do not use more than two cameras per USB3 controller or USB hub
●
Reduce the frame rate or resolution
●
9.3 Troubleshooting Chart
(Rev B)
20
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