Analog Gain Function; Real-Time Correction Functions - Hamamatsu Photonics C11440-10C Instruction Manual

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9-7

ANALOG GAIN FUNCTION

The camera features an on-chip gain control capability that can multiply the analog signal in

sensor prior to converting it into a digital signal. This has the effect of reducing the

quantization error in the A/D converter, and the readout noise can be lowered to 3 electrons

(r.m.s) at analog gain 8x.

When low-light sample imaging in a short time is necessary and the output signal level is only a

few to a few dozen ADU out of 12 bits (4096 ADU), the image quality can be improved by

increasing the analog gain. It is necessary to note that the conversion coefficient* of the camera

changes when the analog gain is increased.

The setting range for the relative value register is 0 to 255. Parameter 0 is correspond to 1x,

255 is correspond to 8x.

9-8

There is a chance that Shading caused by illumination and optics can't be negligible in the

imaging with camera. The camera has the real-time offset level, shading and defective pixel

correction features for a further image quality improvement. The correction can be effective

in real-time without scarifying the readout speed at all.

C11440-10C Ver.1.2

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