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6 General operation modes
In this chapter, the behavior of the operation modes is described. For information on how to configure the CISS or how to
receive data from it, please refer to Chapter 7.
6.1 General behaviour
The individual sensors in the CISS can be activated / deactivated for measurements.
Additionally, different sampling rates can be given for the inertial sensors and the environmental sensors.
The sensors within the CISS are grouped into two clusters:
The first cluster comprises the inertial measurands (acceleration, angular velocity, magnetic field). Besides the sampling
rate, which applies to all inertial sensors, each sensor can be configured individually.
The second cluster is comprised of all environmental sensors (temperature, humidity, pressure, light, noise).
Equally, the sampling rate applies to all sensors, while each sensor can be activated or deactivated individually.
The reporting of the results is structured accordingly.
6.2 Resetting the CISS
The integrated microcontroller of a CISS performs a reset when it is detached from a USB host or power supply or it gets
unmounted (e.g. with the "unmount" command in a Linux-system).
The CISS settings will be reset, the logged data will be preserved.
Note: Exception: Disabling the 2 kHz acceleration streaming mode will cause a reset.
6.3 Logging data to the local memory
When the CISS is configured to log measurements to its local memory, a file will be created in the user data memory,
that is accessible as a mass storage device over USB.
If the local memory is full, the logging will be stopped.
It is possible to concurrently log to memory and stream data via BLE.
The time, until the memory is full, depends on the settings of the CISS.
Example 1:
Sensors: All sensors activated
Sampling rate inertial sensors: 0,01 sec
Sampling rate environmental sensors: 60 sec
Allows logging for approx. 6 min
Example 2:
Sensors: Acceleration sensor and environmental sensors activated
Sampling rate inertial sensors: 0,01 sec
Sampling rate environmental sensors: 60 sec
Allows logging for approx. 10 min
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