Phytec FireWire-CAM-011H, Manual

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First Steps
© PHYTEC Messtechnik GmbH 2006 L-680e_1
37
•
The image display is too slow / flickers
- the exposure time is set at a higher rate as the display speed (
see
next section)
- You can set the display speed (
see next section
)
- It is possible that your computer’s processor performance
is too low
•
The picture flickers under artificial lighting
-
Adjust the picture frequency to the frequency of the artificial
lighting. The camera frequency is 30 Hz (resp. 15/ 7.5/
3.75 Hz), which results in interference with the 50 Hz mains
frequency in Europe. Use either a high exposure time or use
frequency-independent lighting.
Note:
•
Occurring interference at 30 Hz is not a defect. Conventional TV
cameras in Europe always work with the lower image frequency of
25 Hz, to avoid these interferences.
•
The exposure time is (largely) independent from the image
frequency. Thus the settings do not influence each other.
2.6.3 Adjusting Camera Settings
The FireWire-CAM series offers a large number of setting options,
which can be adjusted via software from the computer.
The setting options are grouped in multiple dialogs (menus).
Depending on the application the call of the dialogs can occur at
various locations.
This section provides a brief overview of the setting options and the
call of the dialogs in the program PHYTEC-Vision-Demo. A complete
description of the functions can be found in
section 3.4.