Channels

Channels in the Otii 3 Desktop App are different input/output data sources that can be monitored or controlled. These channels enable the measurement of multiple currents, voltages, and power consumption of the main system and sub-systems. To enable a channel, simply click on the desired channel to be measured. Once enabled, the graphing section will display where the measured values will be logged for further analysis. If a channel is disabled for a new recording within the same project, the associated data will be kept, although the channel will not be included in upcoming recordings.

When selecting a current channel, the matching power channel will automatically be enabled as well, but the power measurement will be hidden by default. The power channel is needed to calculate the energy consumed in the statistics for the recordings.

Channels to be measured

Within the channels available for measurement, the following can be found:

• Main current: include a graph of the current measured at the Otii hardware main connectors in the recordings.

• Main power: include a graph of the power measured at the Otii hardware main connectors in the recordings.

• Main voltage: include a graph of the voltage measured at the Otii hardware main connectors in the recordings.

• ADC voltage: include a graph of the voltage measured at the ADC connectors in the recordings. This is measured on ADC+ pin. Single-ended from ADC+ to AGND; see an example of how to connect the ADC to measure voltage.
• ADC current: include a graph of the current measured at the ADC connectors in the recordings. This is a differential measurement between ADC+ and ADC- pin; see an example of how to set the ADC resistor.
• ADC power: include a graph of the power measured at the ADC connectors in the recordings.

• SENSE +/- voltage: include a graph of the voltage measured at the SENSE+ and/or SENSE- pins in the expansion port. Single-ended measured compared to AGND.
• GPI1 & GPI2: include a graph of the signal measured at the GPI1 and/or GPI2 pins in the expansion port. These pins are digital, and their value depends on how you have configured your digital voltage level in the supply mode.