UM1590
Running the demonstration
Doc ID 023892 Rev 1
Figure 71.
Brightness level
2.4.9
Humidity measurement application
Before humidity measurements can be performed, a 2-step calibration is required:
1. In the first step, the capacitance offset error is evaluated and saved in backup
registers, this phase is performed with JP19 installed in 2-3 (REF) position.
The message shown in
is displayed.
The user must press SEL and follow the next step.
Figure 72.
Humidity calibration 1
2. In the second step, the humidity measurement accurancy can be improved by
entering the actual humidity reference at calibration time if it is known. After seeting the
JP19 to HUM position, select a reference humidity value using UP/DOWN buttons as
indicated on
then press the SEL button. Otherwise, let the estimated
humidity value unchanged and press the SEL button.
