Power profiler, DC energy analyzer, power supply, digital multimeter, source measure unit, power debugger. One box to rule all.
Accurate, affordable, and easy to use.
Power supply: 0.5V-5V
Wide dynamic range: nA-5A
Current measurement resolution: 5nA
No burden voltage
Sample rate: up to 4ksps
UART sync with the measurements
Best-in-class multiplatform UI and software
Otii Arc Pro is an instrument that can precisely source voltage or current and simultaneously measure voltage and/or current. It computes power and energy and syncs with software output, enabling engineers and developers to easily see what drains the energy and optimize the battery life of their devices under test.
It comes with featured-packed Otii Basic perpetual software and 1-year Otii Pro software.
Use Otii Arc Pro to:
and much more!
Otii Arc Pro is truly versatile. It is a 2 quadrant source measure unit (SMU) with a constant voltage or constant current source and sink together with a high precision multichannel multimeter.
Set it up as a constant, linear power supply, 0.5-5V. Use it as a power analyzer or profiler to record and display real-time currents, voltages and/or UART logs. It provides nA resolution current measurements with a sample rate up to 4 ksps.
Otii Arc Pro has active voltage regulation and compensates for burden voltage.
Test and measurement instruments can have killer software and we are here to prove it. The best hardware deserves nothing less than the best software so you get to spend your time energy optimising your product.
Otii software comes as powerful yet easy-to-use desktop application for Ubuntu, Windows & macOS.
Check the statistics of the accumulated energy consumption continuously while recording. Compare recordings, hide and show relevant data and stats.
Measure accurately over 9 orders of magnitude from amps down to tens of nanoamps with the wide dynamic range of Otii Arc Pro.
Display and work with accurate visualization of the active and sleep modes on the same screen and project.
Connect your device to Otii Arc Pro’s expansion port. Log GPIs, ADC subsystem measurements and UART logs. All the recordings are synced to the current and voltage graphs making it easy to correlate power consumption to the application state.
From unpacking Otii Arc Pro to measurement in less than 1 minute. Power it by USB for portability or by using an external DC adapter.
Otii Arc measures 10,9cm x 14,4cm x 4,4cm (WxLxH) and weighs 450 grams. It is designed for the office, the lab, and usage at home, as well as field measurements. Also, the innovative mechanical design allows for efficient heat dissipation, hence no fan needed and therefore no noise.
Min | Unit | Max | |
---|---|---|---|
Operating Environment | |||
Operating environment | 15 °C / 60 °F | 30 °C / 86 °F | |
Humidity | 30% | 60% | |
USB Power Supply(1) | |||
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 | 1 mV | ||
Output current | 250 mA | ||
External 7.5 – 9 V Power Supply(2) | |||
Output voltage (auto range) | 0.5 V | 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 | ||
Programmable Current Sink (requires an Otii Battery Toolbox license or Otii Automation license) | |||
Sink current | 0 A | 2.5 A | |
Sink current, 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 | |
Current measurement | |||
Accuracy | ±(0.1% + 50 nA)(5) | ||
Sample Rate in ±19 mA range | 4 ksps | ||
Sample Rate in ±2.7 A range | 1 ksps | ||
Sample Rate in ±5.0 A range | 1 ksps | ||
Analog bandwidth (3 dB) | 400 Hz | ||
Voltage measurement | |||
Total accuracy | ±(0.1% + 1.5 mV) | ||
Sample Rate | 1 ksps | ||
UART | |||
Bitrate | 110 bps | 5.25 Mbps | |
Digital I/O; GPO1, GPO2, TX(6) | |||
VIO Expansion port operating voltage | 1.2 V | VIO(7) | 5 V(8) |
VIL Low-level input voltage | VIO * 0.2 V | ||
VIH High-level input voltage | VIO * 0.8 V | ||
Imax Maximum sink/source current | 10 mA | ||
ADC, Differential Analog/Digital Conversion pins ADC-, ADC+ (9) | |||
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 | ||
ADC, Single Ended Analog/Digital Conversion pin ADC+ | |||
Voltage input | 0 V | 5 V | |
Resolution | 1.25 mV | ||
Accuracy | ±(0.1% + 7.5 mV) | ||
Input impedance | 830 kΩ | ||
SENSE, pins SENSE- and SENSE+ | |||
Voltage input | 0 V | 5 V | |
Resolution | 1.5 mV | ||
Accuracy | 1% | ||
Input impedance | 1 MΩ |
Otii Arc Pro comes with perpetual Otii Basic Software and 1-year Otii Pro Software subscription for free. Otii Pro Software renewal is automatic and annual, the fallback is measurements with Otii Basic Software if the Pro subscription is not renewed.
There is a perpetual option for Otii Pro and Otii Toolboxes.
Otii software runs on Windows, Ubuntu and macOS.
To run Otii Arc Pro, download Otii software here:
Feature | Basic | Pro |
---|---|---|
Basic measurements (current, voltage, power) | ✔ | ✔ |
GPI measurements | ✔ | ✔ |
ADC (sub-system) measurements | ✔ | ✔ |
Save/load projects | ✔ | ✔ |
Basic statistics | ✔ | ✔ |
Unlimited undo/redo | ✔ | ✔ |
Offset calibration | ✔ | ✔ |
Export CSV | ✔ | ✔ |
Export project | ✔ | ✔ |
Downsampling | ✔ | |
Crop | ✔ | |
Multiple recordings | ✔ | |
Record more than 10 minutes | ✔ | |
Record UART logs | ✔ | |
Sync data with UART logs | ✔ | |
Sync multiple recordings | ✔ | |
Multiple Otii boxes | ✔ | |
Set sample rate (Otii Ace Pro only) | ✔ | |
Customize statistics | ✔ | |
USB-UART | ✔ | |
Filter log | ✔ | |
Battery life calculator | ✔ | |
4-wire support | ✔ | |
In-line measurement support (Otii Ace Pro only) | ✔ | |
Offline license (Otii Ace Pro only) | ✔ | |
Markers/annotation | ✔ | |
Import from another project | ✔ | |
Import logs | ✔ | |
Record UART TX | ✔ | |
Logarithmic scale | ✔ |
Feature | Otii Automation Toolbox | Otii Battery Toolbox |
---|---|---|
Scripting in any language using JSON API | ✔ | |
Packaged scripting modules available for Python, Matlab, C#, Java | ✔ | |
CLI | ✔ | |
Battery emulation | ✔ | |
Battery profiling | ✔ |
The difference between the Otii Arc Pro and Otii Ace Pro hardware is for example in the power supply and sampling rate. Otii Arc Pro goes up to 5 V and has a sampling rate of 4ksps and goes Otii Ace Pro up to 25 V and has a sampling rate of 50 ksps.
Here is the detailed hardware comparison between Otii Arc Pro and Otii Ace Pro.
In the package, you will receive Otii Arc Pro and a USB micro-B cable. Otii Arc Pro comes with 1-year Otii Pro software. If not renewed the fallback is Otii Basic software which is free and perpetual. Register and download the software here.
Otii Pro is the best-in-class software for measuring and analyzing energy consumption. It works with all Otii hardware boxes. You can subscribe to Otii Pro software on a monthly or yearly basis. If you are not a subscriber, you can request a perpetual license that best suits your needs.
Check out Otii Pro software features list here.
Please follow these simple steps here.
If you are looking for a customized plan for your team’s and company’s needs, please contact our Sales team directly. We will be more than happy to respond to your request and help you achieve your project or business goal with our most suitable tools.
If you choose to run with an external DC adapter, we recommend you to pick one from an established supplier. The adapter should be low noise, approved for IEC 60950-1 as a Limited Power Source.
The output from the DC adapter can be in the range 7-9V. We recommend 9V in case you have a voltage drop in the supply cables. Pick an adapter that is able to provide a little more than the output current you will need. Be aware that the voltage drop in most cables at 5A is not negligible.
Otii Arc voltage output range: 0-4.2V, 0-200mA
In most cases, the power supplied by your computer’s USB Host will be sufficient. However, not all computer USB Hosts are created equal, and if you experience problems you might need an external power supply, see the next section. Hint: By enabling ”meters” (Device => Meters) you can see the actual voltage of your Otii. VBUS is the USB voltage. If this goes below 4.75V, you should switch to an external DC adapter. The input voltage from the external DC connector is also monitored (VDC) and this should not go below 7V.
Otii Arc voltage output range: 0-5V, 0-2A continuous current
For this you should use an external AC/DC adapter. There are many good ones available, and we recommend you pick a certified one of good quality with sufficient power rating and 7-9VDC output. XP Power VER18US090-JA, providing up to 2A, and available through Digikey.com, has received good feedback.
Otii Arc voltage output range: 0-5V, 0-2.5A continuous current, 5A peak current
Again, use an external power supply. However, many AC/DC adapters with a rating above 2A have been found to be quite noisy, so you should be careful about the quality when looking for good measurements and working in these ranges. We recommend you use a good certified lab power supply. Make sure your lab supply can handle the maximum peak current your device possibly can surge. Be aware of the + and – signs for the DC input.
Check out our blog post and a short video where we show how Otii Arc Pro measures short pulses.
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