Users Manual Area Scan Cameras SVSGigE
Page 37
Users Manual –evo1050, evo2050, evo2150, evo4050, evo4070, evo8050 and evo12040
© SVS-VISTEK GmbH
camera. As soon as a balance is achieved between left and right channel, the mode
returns to “Off” automatically.
Mode “Auto / Once” is activated when a camera is opened. After capturing one or mul-
tiple images, the mode switches back to “Off” what is the normal state for camera us-
age. After this procedure factory set up is replaced.
In case of big changes for gain and/or exposure, it might be desirable to monitor tap
balance continuously. In this case the auto tap balance mode should be switched to
“Auto / Continuous”. There is no visible runtime penalty for the “Auto / Continuous”
mode since only a small stripe in the middle of each image is used for evaluating tap
balance.
A balance setting can also be saved to EEPROM along with all other settings of a cam-
era as described under “Persistence”. That stored balance setting will become the de-
fault when the camera is re-booted.
HINT: A camera runs tap balance ONCE when it is opened in
SVCapture. Therefore the tap balance settings that are
stored on EEPROM might not be displayed when opening a
camera in free-running mode. A camera should be switched
e.g. to “software trigger” in order to verify the tap balance
stored on EEPROM.
A camera can also be switched to single-tap if this feature is
supported.
Auto tap balance is usually switched “Off” during normal camera usage. It can be acti-
vated for two modes:
•
Once
•
Continuous
When switched to “Once”, captured images will be checked for tap balance and in case
of a deviation, new left/right gain factors will be determined and be sent to the cam-
era. As soon as a balance is achieved between left and right channel, the mode re-
turns to “Off” automatically.
Mode “Once” is activated when a camera is opened. After capturing one or multiple
images, the mode switches back to “Off” what is the normal state for camera usage.
In case of big changes for gain and/or exposure, it might be desirable to monitor tap
balance continuously. In this case the auto tap balance mode should be switched to
“Continuous”. There is no visible runtime penalty for the “Continuous” mode since on-
ly a small stripe in the middle of each image is used for evaluating tap balance.
Current tap balance will be displayed numerically in a range from -1.5 dB to +1.5 dB
as well as graphically by a slider. The slider can also be used for manually adjusting
arbitrary gain factors. The check box “Gain balance” has to be checked in order to en-
able the slider for manual adjustments.
Current balance settings can be saved into a file and restored later using the “Save”
and “Load” buttons. Appropriate file save/load dialogs will open after clicking on a but-
ton. Saving/Loading auto balance settings might be applicable in case of working with
different gain/exposure settings regularly. This would avoid the need for running auto
tap balance each time after changing the gain/exposure settings.
A camera can also be switched to single-tap if this feature is supported.
