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  • Welcome
  • Otii PRODUCT SUITE
    • Overview
      • What’s included
    • Otii hardware
      • Otii Arc Pro
      • Otii Ace Pro
    • Otii software
      • Otii 3 Desktop App
      • Otii Toolbox
        • Otii Battery Toolbox [BT]
        • Otii Automation Toolbox [AT]
  • Otii SETUP
    • Connecting Otii hardware
      • Otii hardware overview
        • Otii Arc Pro overview
        • Otii Ace Pro overview
      • Wiring up
        • Expansion Port
        • Measuring DUT
        • Measuring a subsystem
        • External power source
        • Capture UART logs
    • Installing Otii software
      • Windows 10/11 setup
      • macOS setup
      • Ubuntu setup
      • Raspberry Pi setup
    • Getting started
      • Account & licensing
        • Activation & Licensing
        • Managing Licenses
      • User interface overview
        • Main window layout
        • Keyboard navigation
      • Support resources
  • Otii 3
    • Settings overview
    • Working with projects
      • Project storage
      • Create a new project
      • Save & open a project
      • Import an Otii 2.0 project
      • Export recordings as CSV
    • Control
      • Otii Arc/Ace setup
      • General settings
      • Channels
      • UART
      • Firmware management
      • Calibration
    • Recordings
      • Recording management
      • Recording tools
      • Recording viewers
        • Analog
        • Digital
        • Log
    • Measurements
    • Battery life estimator
    • Otii Battery Toolbox
      • Battery emulation
      • Battery profiler
        • Getting started with battery profiling
      • Battery validation
      • Battery Model Parameters
    • Otii Automation Toolbox
      • Otii TCP Server
      • Otii 3 Desktop App
      • Otii Server
      • User management
    • Additional features
      • User management
      • Show monitor
      • Notifications
    • Online account manager
  • Advanced guides
    • Python scripting
    • C# scripting
    • Jenkins integration
  • HELP & FAQ
    • FAQ
      • Otii Arc Pro
      • Otii Ace Pro
    • Revision history
  • Legal information
    • Product safety
    • Liability disclaimer
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On this page
  • Wiring up possibilities
  • Keep in mind
  • Selecting a power supply
  • Grounding advice

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  1. Otii SETUP
  2. Connecting Otii hardware

Wiring up

Explore hardware setup examples for a variety of use cases.

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Last updated 1 year ago

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Otii hardware features two main connectors and one expansion port. Multiple channels can be measured with the available inputs, such as main current, main power, main voltage, ADC current, ADC voltage, SENSE+ voltage, SENSE- voltage, GPI1, and GPI2, as well as capturing serial logs from any embedded system or IoT devices.

To get the most out of the Otii Arc Pro and Otii Ace Pro, start by checking out the to explore how to enhance measurement capabilities.

Wiring up possibilities

Discover hardware setup examples for a variety of use cases:


Keep in mind

Selecting a power supply

When using an external DC adapter, choosing one from an established supplier is highly recommended. The adapter should be low-noise, comply with IEC 60950-1 as a Limited Power Source, and have an output of 7 to 9 VDC for the Otii Arc Pro and 7 to 20 VDC for the Otii Ace Pro, with a maximum of 5A.

Visit the for more information on selecting the proper power supply.

Grounding advice

  • AGND is utilized as a reference point for analog measurements.

  • DGND is used as a reference point for digital signaling.

A separate ground wire for the signal ground, attached to either DGND (Digital Ground) or AGND (Analog Ground) on the , should be used. This will prevent disturbances and measurement errors caused by voltage drops in the negative battery wire.

Expansion port
Expansion Port

Measuring DUT

Measuring a subsystem

External power source

Capture UART logs

FAQ page
expansion port