JAI RM-670, Руководство пользователя

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Functional Options 39
RM-67X Series
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High Sensitivity Mode
When this box is checked, the camera’s “high sensitivity” mode is enabled. This mode uses special processing of the video
signal to sum neighboring pixels and increase the level of the output signal as illumination decreases. The camera will
automatically switch to high sensitivity processing under dark conditions when the video level from ALC drops below a
minimum threshold. Using High Sensitivity Mode, the camera’s low light sensitivity can be extended by a factor of roughly
100. On screen resolution is reduced due to the summing process, however unlike traditional binning, the camera’s frame
rate remains constant at 25 fps.
5.1.2 White Blemish Compensation (Option OP2-5)
This optional feature allows the user to control the white blemish compensation process. The camera can come pre-
calibrated with the white blemishes mapped and saved into the flash memory. Once calibrated, the camera will then
interpolate and substitute for the white pixels.
Figure 35. White Blemish Set
5.1.2.1 Blemish Threshold (%)
This feature is used to detect the white blemish pixels. The user enters the percentage above the mean to determine the
blemishes. Clicking on “Locate Blemishes” will display the number of blemishes found in the “Blemish Count” box. If no
blemishes are detected, the user can lower the threshold until it starts to detect them.
NOTE: The total number of blemishes allowed is 64. Thus, if there are more than 64, the camera will only
correct the first 64 blemishes it detects. To reduce the number of blemishes, the user should raise the
threshold.
Once the blemishes are located, the “White Blemish Compensation” can be enabled or disabled in the main control
window. The file should be saved under the “User Set.”
5.1.2.2 Column Defect Compensation
In addition to individual blemish compensation, this camera system also allows for the correction of up to four column
defects. Enter the column number of the defect(s) in one or more of the Address boxes. Turning the Indicator to “On”
displays an on-screen marker which can be used to identify the column number of the defective column. Once identified,
the camera will compensate for the defective column when “White Blemish Compensation” is enabled.
5.1.3 Extended Temperature Range (-45°C to +65°C) (Option OP22-5-1)
This optional feature assures that the camera will operate at this extended temperature range. If this option is selected,
each unit is individually tested, validated and temperature cycled through the temperature range. Although the unit is
guaranteed to operate throughout the temperature range, there may be some reduced performance, such as higher noise,
reduced SNR, etc.
5.1.4 Conformal Coat (Option OP22-5-5)
This optional feature calls for the individual printed circuit boards to be individually conformal coated. Conformal coating
protects the camera from harsh environments, such as areas of high humidity, salt and spray conditions, etc. The
conformal coating is normally a urethane based acrylic, but other materials can be used based on the customer’s request.