Table of Contents
Advertisement
Gain and offset controls
The electrical gain and offset controls of the EXi Aqua camera allow the user to map an image's intensities of
interest to the camera's digital range. This mapping is performed in the analog domain and thus avoids the
quantization errors incurred when the mapping is performed in the digital domain.
Most users wish to operate the camera in a mode that maximizes dynamic range. The factory default electrical
gain and offset are calibrated values that maximize the dynamic range. The electrical gain and offset can be
controlled in software by the CCD gain and offset controls.
Blackout mode
If you require a dark environment for your experiment and you wish to minimize the effect of
transient lights, the lights on the EXi Aqua camera can be disabled by selecting the Blackout feature
in the software.
High sensitivity
To gather low light data in the Near-Infrared spectrum, select the High Sensitivity mode in the software.
When in this mode, the EXi Aqua camera's advanced electronics and firmware features will adjust to
maximize the response of the sensor above 500 nm. This mode also provides for increased image
uniformity by nearly eliminating transient signals generated within the camera.
Note: The "overlap" capability of the camera is disabled in this mode, so the camera cannot read out an
image at the same time that another image is being collected. As a result, the rate at which you can
stream images may be affected.
RGB color filter support for Monochrome EXi Aquas
To add color to your images, attach a QImaging RGB filter to your EXi Aqua camera. The length of
exposure and gain for each of the red, blue and green channels is adjustable in software and can be
tuned to your specific environments, experiments and conditions. When using an RGB color filter, up
to three images are taken (one for each color). They are automatically composed together to form a
"full color image." Since multiple exposures are required to form the image, note that the frame rate
for the camera will be effectively reduced when in this mode.
Contact QImaging or your QImaging sales representative if you wish to purchase an RGB filter.
10
Advertisement
Table of Contents
