High-precision energy consumption analysis & optimization tool.
The Otii Arc Pro 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, supporting a sample rate up to 4ksps for main current channel, plus a wide dynamic current measurement range (nA-5A) with 5nA resolution, and accurate current measurement (±0.1% + 50nA) for currents below 19mA and (±0.1% + 150uA) for higher currents.
To elevate the Otii Arc Pro's capabilities for product development, test and verification, quality assurance, and maintenance, explore Otii Toolbox, a set of specialized licenses that can be purchased as perpetual or subscribed to on yearly or monthly basis.
All-in-one functionality: Otii hardware and Otii software integrates power supply, real-time monitoring, and detailed analysis in a single, compact, user-friendly product.
Quick installation & easy to use: Download Otii 3 Desktop app, plug the Otii Arc Pro to your device under test (DUT) and start measuring energy data in less than a minute.
Optimal power alternatives: Power up Otii Arc Pro based on your solution setup and power requirements via USB or an external DC adapter.
Versatile connection: Power source your device under test using the Otii Arc Pro, which can deliver up to 5V at high voltage/current resolution. The DUT can be connected either through its DC input or battery connectors.
Real-time measurements & analysis: Analyze and compare charts and measurements in real-time, covering currents, voltages, and power within the Otii 3 Desktop App – it allows scrolling, zooming, and selecting current consumption and debugging logs during measurement.
Continuous serial synchronization: Measurements are continuously synchronized with debug logs from the device under test via UART.
Responsive UI: Ensure smooth performance under heavy data measurements loads, supporting multiple streams and long recordings – optimized for high-definition displays to enhance user experience during analysis.
Collaborative features: Share recordings and analyses with team members to get insights and feedback for further product releases on a recurring basis.
Upgradeable software: Unlock a wider range of features and specialized functionalities, including battery profiling and automation tools.
±(0,1% + 50nA) accuracy below 19mA and +-(0.1%+150uA) above 19mA
5nA current measurement resolution
24 bit ADC with automatic switching between ranges
No burden voltage
Voltage measurement accuracy ±(0.1% + 1.5 mV)
Up to 4ksps for main current channel
1ksps for all other channels (main voltage, ADC current, ADC voltage, SENSE+, SENSE-, UART RX, GPI1, GPI2)
0.5V - 5.0V.
USB only (0.5V - 3.75V in auto range mode, 0.5V - 4.2V in high range mode)
DC plug supply (0.5V - 4.55V in auto range mode, 0.5V - 5.0V in high range mode)
-2.5A to 5A (depends on available current from USB or DC plug)
Digital IO voltage 1.2V - 5.0V
Max 10mA source and sink in total
Otii software support for Microsoft Windows, Apple macOS, and Linux Ubuntu.
Real-time graphs of currents, voltages, power measurements and digital inputs.
Analyze statistics and measurements while recording continues in the background.
Connect multiple Otii Arc Pro to manage and sync multiple recordings at the same time.
Record and manage multiple recordings for unlimited time.
Record and sync data with UART logs.
Customize recordings and channels names to make the change logs easy to trace during your solution's development cycle.
Save, load, and export projects as a zip-archive, or recording data as CSV for further analysis in collaboration with your team.
In-line and 4-wire measurement support.
Unlimited changes with undo/redo functionality.
Use Otii Arc Pro every day to:
Power your devices under development
Energy profile microcontrollers, sensors and devices in real-time and over time
Optimize sleep current and extend battery life
Design power-efficient hardware, firmware and software through regression testing
Troubleshoot your hardware, firmware and software
Sync UART logs with power measurements to see what drains the energy
⁽¹⁾ USB power capacity and reliability in laptops and desktops greatly depend on host USB port/cable design. ⁽²⁾ See list of recommended external power supplies and powered USB hubs at our FAQ. ⁽³⁾ Depends on chosen power supply. Otii Arc Pro will monitor internal temperature and cut off if temperature limit is reached. ⁽⁴⁾ Sink voltage can go below this specification if locked to high range. It is possible to go down to 0.5 V if the sink current is below 1.9 A. For currents below 19 mA, the measurement will have a lot more noise when locked to high range than in auto range. ⁽⁵⁾ Up to 19 mA current in auto range, for higher currents, the accuracy is ±(0.1 % + 150 µA). Average > 1s. ⁽⁶⁾ See Nexperia SN74LVC8T245 for details. ⁽⁷⁾ Expansion Port Digital voltage level is set by user in Otii SW. ⁽⁸⁾ Maximum voltage will depend on your USB power supply and USB cable. ⁽⁹⁾ See TI INA226 for details.
| OPERATING ENVIRONMENT | Min | Typical | Max |
|---|---|---|---|
| USB POWER SUPPLY ⁽¹⁾ | Min | Typical | Max |
|---|---|---|---|
| EXTERNAL 7.5V-9V POWER SUPPLY ⁽¹⁾ | Min | Typical | Max |
|---|---|---|---|
| PROGRAMMABLE CURRENT SINK (requires an Otii Toolbox) | Min | Typical | Max |
|---|---|---|---|
| CURRENT MEASUREMENT | Min | Typical | Max |
|---|---|---|---|
| VOLTAGE MEASUREMENT | Min | Typical | Max |
|---|---|---|---|
| UART | Min | Typical | Max |
|---|---|---|---|
| DIGITAL I/O | Min | Typical | Max |
|---|---|---|---|
| Differential ADC, pins ADC- and ADC+ | Min | Typical | Max |
|---|---|---|---|
| Single ended ADC, pins ADC- and ADC+ | Min | Typical | Max |
|---|---|---|---|
| SENSE, pins SENSE- and SENSE+ | Min | Typical | Max |
|---|---|---|---|
| EXPANSION PORT POWER SUPPLY | Min | Typical | Max |
|---|---|---|---|
| DC JACK | Min | Typical | Max |
|---|---|---|---|
| USB | Min | Typical | Max |
|---|---|---|---|
Temperature
15°C / 60°F
30°C / 86°F
Humidity
30 %
60 %
Output voltage (auto range)
0.5 V
3.75 V
Output voltage (locked to high current range)
0.5 V
4.2 V
Output voltage setting resolution
Output current
250 mA
up to 1A ⁽¹⁾
Output voltage (auto range)
4.55 V
Output voltage (locked to high current range)
0.5 V
5.0 V
Output voltage setting resolution
1 mV
Output current, max continuous ⁽³⁾
2.5 A
Output current, max peak ⁽³⁾
5 A
Sink current
0 A
2.5 A
Sink current, setting resolution
39 µA
Sink voltage, USB power supply
0.85 V ⁽⁴⁾
4.2 V
Sink voltage, external power supply
0.85 V ⁽⁴⁾
5.0 V
Accuracy
±(0.1% + 50 nA)⁽⁵⁾
Sample Rate in ±19 mA range
4 ksps
Sample Rate in ±2.7A range
1 ksps
Sample Rate in ±5.0 A range
1 ksps
Analog bandwidth (3 dB)
400 Hz
Total accuracy
±(0.1% + 1.5 mV)
Sample rate
1 ksps
Bitrate
110 bps
5.25 Mbps
Digital IO operating voltage
1.2 V
Vio ⁽⁷⁾
5 V ⁽⁸⁾
VIL Low-level input voltage. VIL
Vio*0.2V
VIH High-level input voltage
Vio*0.8V
Imax, Max sink/source current (total for GPIOs)
-10 mA
10 mA
Voltage input
0 V
5 V
Shunt voltage range
-81.9175 mV
81.2 mV
Resolution
2.5 µV
Accuracy
±(0.1% + 10 µV)
Input impedance
220 kΩ
Voltage input
0 V
5 V
Resolution
1.25 mV
Accuracy
±(0.1% + 7.5mV)
Input impedance
830 kΩ
Voltage input
0 V
5 V
Resolution
1.5 mV
Accuracy
1%
Input impedance
1 MΩ
Output voltage
5 V
Output current
500 mA
Input voltage
7 V
9 V
Input current
5 A
VBUS voltage ⁽⁴⁾
4.75 V
5.25 V
VBUS current ⁽⁴⁾
3 A