Princeton Instruments PIXIS System - Figure 27. Binning and Array Orientation

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Chapter 5 Operation 63

Figure 27. Binning and Array Orientation

Note: You can easily switch between these orientations by rotating the camera 90° and

changing the binning parameters in the application software.

Output Amplifier {Quality} Selection

The output amplifier amplifies the collected charge from the output node and outputs it as

electrons/count. Although Figure 24 shows an array with dual output nodes and

amplifiers (one set at each end of the shift register), some PIXIS systems are available

with a single output node and amplifier. If your system has dual output amplifiers, you

can choose the output amplifier to be used (High Capacity or Low Noise) via the

Acquisition|Experiment Setup…|ADC tab {Quality on the Analog to Digital

Conversion expander}:

 High Capacity amplifier: Provides a spectrometric well capacity that is

approximately 3 times the well capacity for the Low Noise amplifier selection.

High Capacity is suitable when you have intense light signals or signals with

high dynamic range.

 Low Noise amplifier: Provides the highest sensitivity performance and is

suitable when you have weak signals.

Note: The choice of output amplifier {Quality} and controller gain {Analog Gain}

setting should be considered together for the best signal capture. Examples of the

interaction of output amplifier and controller gain selections are shown in Table 2.