Crosstalk Calibration - Broadcom AFBR-S50 Quick Start Manual

AFBR-S50 User Guide Evaluation Kit Quick Start Guide

2.5.1.3 Crosstalk Calibration

Crosstalk (Xtalk) calibration should be carried out for each system design with implemented AFBR-S50 sensors. It targets
to compensate electrical crosstalk possibly generated by the application PCB, as well as optical crosstalk generated by a
cover glass mounted above the sensor and therefore affecting its optical path.
The following example shows the calibration of electrical crosstalk. For a full calibration of electrical and optical crosstalk (for
example, due to usage of a cover glass), refer to the
AFBR-S50-XTK Crosstalk Guide.
Example Calibration Sequence for Electrical Xtalk Compensation Only
1. Blind the sensor with a foam while taking measurements, and make sure that the amplitudes are roughly as low as shown
in the following figure.
Figure 39: Blinding Sensor for Xtalk Calibration
2. Click the Run Crosstalk Calibration Sequence button located in the API tab.
Figure 40: Crosstalk Calibration Amplitude
The Xtalk vector table is immediately applied to all pixels. For further information, refer to the information in the
AFBR-S50-
XTK Crosstalk Guide.
Broadcom AFBR-S50-EK-UG104
28