Gain and Offset Controls
The Rolera EM-C
2
has two gain modes: (1) Multiplication Gain or EM Gain and (2) Easy-EM mode.
The Multiplication gain controls the EM portion of the camera and allows you to bring the signal of
the sample above the read-noise.
The
offset control of the Rolera EM-C
2
allows
you to change your bias level or offset level to ensure
that
you capture all signals. This mapping is performed in the analog domain and thus avoids the
quantization errors incurred
when the mapping is performed in the digital domain.
Easy-EM Mode
The Rolera EM-C
2
introduces the new Easy-EM Mode. This mode optimizes the EM Gain setting on the
camera to provide the best signal to noise ratio.
Using EM Gain adds an additional noise source known as Excess Noise. Using too much EM Gain will
increase this Excess Noise being added to the signal. However, using too little EM Gain does not
effectively reduce the read-noise.
Easy-EM Mode automatically selects the optimal position for the EM Gain to maximize the quality of your
results. Each and every camera is individually tested and calibrated to provide optimal settings.
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Summary of Contents for Rolera EM-C2
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