SeeSii LiteVNA Vector Network Analyzer User Manual

1. Important Safety Information & Warnings

Please read all instructions carefully before using the device. Failure to follow these instructions may result in product damage or personal injury.

• Temperature & Moisture: Avoid exposing the device to extreme temperatures or moisture. This can damage the device and void the warranty.
• Vehicle Storage: Do not leave the device in a car exposed to direct sunlight or high temperatures for extended periods, as this may cause the internal battery to expand or explode.
• Battery Disposal: Batteries should be recycled or disposed of separately from household waste, following local environmental laws and guidelines.
• Children: Keep the device away from children unless under adult supervision.
• Intended Use: Use this product only for its intended purpose as a Vector Network Analyzer.
• Inspection: Always inspect the product for any damage before each use. Do not use if damaged.
• Operation: Follow all installation and operation guidelines to prevent injury.
• Water Exposure: Do not expose the device to water or moisture.

2. Setup & Getting Started

2.1. Package Contents

Carefully unpack your LiteVNA device and verify all components are present:

Image: Contents of the LiteVNA package, including the analyzer unit, cables, adapters, and stylus.

• LiteVNA Vector Network Analyzer Unit
• 2 x SMA Male to Male RF Cables
• 1 x USB-C to USB-A Charging/Data Cable
• Set of SMA Adapters (e.g., Male-to-Male, Female-to-Female, etc.)
• 1 x Stylus Pen
• 1 x Lanyard

2.2. Device Overview

Image: Diagram highlighting the SD Card Interface, Multi-function Switch, Power on/off button, LED Indicator, and Type-C USB Interface.

• PORT1 (S11): Input/Output port for S11 measurements.
• PORT2 (S21): Input/Output port for S21 measurements.
• USB-C Interface: For charging and data connection to a computer.
• SD Card Interface: Slot for MicroSD card (up to 32GB) to save measurement data.
• Power On/Off Button: Controls device power.
• Multi-function Switch: Used for navigation (Left/OK/Right) in menus.
• LED Indicator: Provides status feedback.
• 4-inch Touch Screen: Main display for measurements and user interface.

2.3. Before First Use

1. Remove Protective Films: Gently peel off any protective films from the screen and other surfaces of the device.

2.4. Charging the Device

Image: The LiteVNA connected to a laptop via USB-C for charging, highlighting the 2000mAh battery and USB-C port.

1. Connect the provided USB-C cable to the USB-C port on the LiteVNA.
2. Connect the other end of the USB-C cable to a certified 5V power adapter (not included) or a computer's USB port.
3. The LED indicator will show charging status. A full charge provides up to 8 hours of working time.

3. Operating Instructions

3.1. Power On/Off

1. To Power On: Press and hold the Power On/Off button for approximately 3 seconds until the screen illuminates.
2. To Power Off: Press and hold the Power On/Off button again for approximately 3 seconds until the screen shuts down.

3.2. Basic Navigation

Image: Close-up of the 4-inch colorful touch screen, showing touch and wheel operation, and brightness adjustment.

• Mode Selection: Short press the Power On/Off button to cycle through different measurement modes or menu options.
• Touch Screen: Use the included stylus or your finger to interact with the on-screen menus and controls.
• Multi-function Switch: Use the wheel (Left/OK/Right) for precise navigation and selection within menus, especially for smaller targets.

3.3. Adjusting Screen Brightness

The screen brightness is adjustable for optimal viewing in various lighting conditions.

1. Navigate to the brightness settings via the menu (specific steps may vary by firmware version).
2. Use the touch screen slider or the multi-function switch to increase or decrease the brightness.

3.4. Saving Measurement Data

The LiteVNA supports saving measurement data to a MicroSD card.

1. Insert a MicroSD card (up to 32GB) into the SD Card Interface slot.
2. Follow the on-screen prompts or menu options to save your current measurement data.

3.5. Understanding Measurements

Image: The LiteVNA display showing S21 LogMag, S21 Phase, S11, and Smith Chart measurements.

The LiteVNA can measure various parameters, including:

• S11 (Reflection Coefficient): Measures the signal reflected from the device under test (DUT).
• S21 (Transmission Coefficient): Measures the signal transmitted through the DUT.
• LogMag: Logarithmic magnitude of S-parameters (e.g., gain/loss in dB).
• Phase: Phase angle of S-parameters.
• Smith Chart: Graphical representation of impedance.
• SWR (Standing Wave Ratio): Indicates impedance matching.

4. Maintenance

4.1. Cleaning

To clean the device, use a soft, dry, lint-free cloth. Do not use abrasive cleaners, solvents, or spray directly onto the device.

4.2. Storage

When not in use, turn off the device and store it in a dry place, away from direct sunlight and extreme temperatures. Keep it out of reach of children.

4.3. Battery Care

To prolong battery life, avoid completely discharging the battery frequently. If storing the device for an extended period, it is recommended to store it with a partial charge (around 50%).

5. Troubleshooting

• Device Not Turning On: Ensure the battery is charged. Connect the device to a power source and allow it to charge for at least 30 minutes before attempting to power it on again.
• Inaccurate Measurements: Proper calibration is crucial for accurate results. Ensure you perform a full calibration (Open, Short, Load) before taking critical measurements. Check that all cables and connectors are securely attached.
• Touch Screen Unresponsive/Inaccurate: Ensure any protective films are removed. Use the provided stylus for better precision, especially for small on-screen targets. If the multi-function switch (joystick) feels stuck, try gently wiggling it or cleaning around its base.
• PC Software Issues: If experiencing bugs or issues with PC software, ensure you are using the latest version from the official LiteVNA website (litevna.org) or other reputable community sources.
• No Charging Indication: Verify the USB-C cable is fully inserted and the power source is functional. Try a different USB-C cable or power adapter.

6. Specifications

Image: Back panel of the LiteVNA showing key specifications and the official design by Hugen.

7. User Tips

• Calibrate Regularly: Always perform a calibration for your specific frequency range and setup to ensure the most accurate measurements. This is especially important when changing cables or adapters.
• Antenna Tuning: The LiteVNA is an excellent tool for tuning antennas and optimizing their SWR for desired frequency bands.
• Firmware Updates: Check the official LiteVNA website (litevna.org) for the latest firmware updates. Updating your device can improve performance, add features, and fix bugs.
• Adapters for Specific Antennas: For testing certain antenna types (e.g., WiFi antennas with RP-SMA connectors), you may need additional adapters not included in the standard package.

8. Warranty & Support

For detailed warranty information, technical support, and further documentation, please refer to the official user manual PDF or contact the manufacturer directly.

A comprehensive user manual in PDF format is available for download: LiteVNA User Manual (PDF)

Manufacturer Information:

Company Name: ShenZhen Sky Blue Ocean Technology Co., Limited
Email: cs@vvavvstore.com
Telephone: +86-18948759773

EU Authorized Representative:

Company Name: Apex CE Specialists GmbH
Email: oylily88@gmail.com
Telephone: +49 21312066043

For the latest software and firmware, please visit the official LiteVNA website: litevna.org