Otii Arc Pro overview
An advanced look at the Otii Arc Pro - technical specifications
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An advanced look at the Otii Arc Pro - technical specifications
Last updated
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As shared on the , this is a compact and portable tool with comprehensive technical features for energy optimization of battery-driven and energy-harvesting devices. As a multi-purpose tool, it serves as a power supply, measurement unit, analyzer and debugger, making it the must-have addition for everyday use on any hardware, firmware and software developer’s desktop.
With Otii Arc Pro and Otii 3 Desktop App, you can source the voltage of the device under test (DUT) up to 5V while simultaneously measuring and recording current, voltage, and power data in real-time for further analysis to optimize battery life throughout the development cycle.
The front side of the Otii Arc Pro has the main connectors, additional ports to extend measurement capabilities, plus a status LED.
The back side of the Otii Arc Pro has the host USB connector and an input socket to power up the unit with an external DC adapter when required.
The Otii Arc Pro has the voltage(+) and voltage(-) binding post (red and black connectors located on the right side of the instrument), which are used to source the DUT but also to measure the current, voltage, and power of the device. The DUT can be connected through its battery connectors or DC input; refer to the connection diagram below for better understanding.
To power up the Otii Arc Pro and enable communication with the host computer, connect the unit to your computer using the provided micro USB to USB A cable.
The expansion port on the front of the Otii Arc Pro is designed to enhance the hardware's functionality, allowing users to measure additional voltages and currents or trigger external events. These additional pins feature multi-input and multi-output for analog and digital signals, serial communication, and additional power and ground points. Below is a general overview of the additional pins available:
+5V
5V output
500 mA
DGND
Digital ground (return current)
RX
UART RX / Digital Input (Exclusively under Scripting)
TX
UART TX / Digital Output (Exclusively under Scripting)
GPI1
Digital input #1
0V - 5.5V
GPI2
Digital input #2
0V - 5.5V
GPO1
Digital Output #1
0V - 5.5V
GPO2
Digital Output #2
0V - 5.5V
DGND
Digital ground (return current)
AGND
Analog ground (return current) | Analog measurements
ADC+
Differential input for current measurement. It also measures single ended voltage with respect to AGND
0V - 5.5V
ADC-
Input for current measurement
0V - 5.5V
SENSE+
Analog input with the AGND as reference/return
0V - 5.5V
SENSE-
Analog input with the AGND as reference/return
0V - 5.5V
The table below explains the Otii Arc Pro's status LED behaviors and their meanings to help you quickly identify the device's state.
Flashing green
Otii Arc Pro is active
Solid green
Relay closed, sinking/sourcing power
Check out the to explore all possible connection configurations between the Otii Arc Pro and your DUT.
In case of using the expansion port, checking out the for all the details about each available pin is highly recommended.
