Support

Got your Otii box?

Here are a few simple steps to get you started.

Software and firmware up to date?

Download and install the latest software and firmware.

Looked into the Documentation and User Manual?

Read the software documentation and user manual online.  The link can also be found in the Otii application in the help menu.

Didn’t find what you are looking for in the Documentation and FAQs? Want to report a bug?

Submit a ticket in our support case system!

Have a sales inquiry?

Explore, ask and share your measurements and achievements with fellow developers and experts on Qoitech Forum. 

Frequently asked questions

Licenses

Do I have to subscribe to use the Otii Arc/Ace Pro and the Otii app?

Otii Arc Pro and Otii Ace Pro come with free Otii Basic license, so no subscription is necessary. Here are the Otii Basics features. 

Both products also come with 1-year Otii Pro license for free. Once the year is expired, you have the option of fallback to Otii Basic, subscribing monthly or yearly to Otii Pro or purchasing a perpetual license. 

How can I activate Otii Pro and/or Toolbox licenses?

Connect your Otii hardware to your computer. Go to User management in the Otii app and register it. Then reserve the license/s that you have purchased.

1 year Otii Pro license is included with the purchase of Otii Arc/Ace Pro.

What is Otii perpetual license?

The Otii perpetual license is limited to the major version of the software update; hence it includes all the Y and Z updates on that Otii X.Y.Z software. You can continue running on that software even if a new major software is released. All the legacy software is supported at the minimum 2 years after a new major software release.

How do I purchase Otii Toolboxes?

Go to User Management/Licenses to choose and add the preferred license/s.

Tech

What is the difference between Otii Arc Pro and Otii Ace Pro?

Power supply and sampling rate are the main differences between Otii Arc Pro and Otii Ace Pro. Otii Ace Pro power supply goes up to 25V and has a sampling rate of 50ksps. Otii Arc Pro power supply goes up to 5V and has a sampling rate of 4ksps. Otii Ace Pro is also an isolated power supply. Both products have active voltage regulation and compensate for burden voltage. Check HERE below for the full and detailed hardware comparison.

On which operating systems does Otii software work?

Otii software is a multi-platform software thus runs on Windows, macOS and Linux (Ubuntu).

What battery model is used when Otii emulates a battery with Otii Battery Toolbox?

Otii models the battery with an OCV (Open Circuit Voltage) and Ri (internal resistance of the battery). OCV and Ri is measured for the complete capacity of the battery and is stored in a battery profile .json file.

The resolution of the Ri is dependent on the difference between the high-current and the low-current during the profiling so a low resistance battery, for example Li-Ion, needs a bigger difference between high-current and low-current, than when profiling a high resistance battery, for example a coin-cell.

Why does ADC measure differently than main current measurement?

If you supply your device with main current and at the same time measuring the current consumption over a sense resistor into ADC, the measurements will not be the same.

The reasons are:

  1. The current measurement resolution is higher for the main current measurement than for the ADC current measurement due to that main current measurement switches between different intervals
  2. For Otii Arc and Otii Arc Pro there is a leakage into the ADC pins, in the order of 10uA, and this current will be measured by the main current measurement but not by the ADC current measurement.
  3. There is a bigger offset error for the ADC measurement than for the main current measurement.

Due to this, you will get the most accurate measurement by using the main current measurement.

How does Otii Arc Pro handle short pulses since the sampling rate is 4ksps?

Check out our blog post and a short video where we show how Otii Arc measures short pulses.

How do I choose the right DC adapter for Otii Arc Pro?

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.

How do I choose the right DC adapter for Otii Ace Pro?

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 7-20V, max 5A. Pick an adapter that is able to provide a little more than the output power you will need. Be aware that the voltage drop in most cables at 5A is not negligible.

Otii Ace voltage and power output range: 0-25V, 0-15W
In most cases, the power supplied by your computer’s USB C ports will be sufficient since Otii Ace has PD implemented. However, not all computer’s USB C ports are created equal, today you mainly find 15W support, 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 voltages. 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 Ace voltage and power output range: 0-25V, 15-30W continuous power
For this you should use an external DC adapter. There are many good ones available, and we recommend you pick a certified one of good quality with sufficient power rating and 7-20VDC, max 5A output. One example is TRH70A180-11E03 VI from Cincon Electronics Co. LTD, and available through Digikey.com but there are many more to pick from.

Otii Ace voltage output range: 0-25V, 30-50W peak power
Otii Ace can support output power of more than 30W and less than 50W but not continuously. Otii Ace will be overheated if too much power is sourced and an overtemperature protection will shut down the power supply if needed.

Payment and shipping

Having issues with payment of Otii Pro or Toolboxes

Our e-commerce platform is provided by FastSpring. For the most convenience and fastest response, please contact Fastspring Consumer Support and fill out the form regarding your issue here.

Having issues with Otii Arc/Ace Pro payment and shipping

Please get in touch with the distributor you purchase from for the most convenient and fastest response.

Distributors of Otii Arc Pro. 

Distributors of Otii Ace Pro.

Warranty and return policy

For customers purchasing Otii Arc Pro and Otii Ace Pro through our distributors, the distributor’s return policy applies. 

We provide a 12-month warranty for hardware faults on the condition that it is not from device misuse.

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