SeeSii NanoVNA-H4 Vector Network Analyzer User Manual

Important Safety Instructions

Please read and understand all instructions carefully before use to ensure proper operation and safety.

1. Before initial use, please fully charge the device to ensure proper operation.
2. Read and understand all instructions carefully before use.

Product Overview

The SeeSii NanoVNA-H4 is a portable vector network analyzer designed for RF electronics and Ham radio enthusiasts. It offers comprehensive vector network measurement capabilities in a compact, handheld form factor.

• Latest V4.3 Version: Supports frequency measurement up to 1.5GHz.
• Display: Features a 4-inch LCD touch screen for easy reading and sensitive touch control.
• Measurement Range: The 50K-300MHz frequency range provides better than 70dB dynamic range. The extended 300M-900MHz band offers over 60dB dynamic range, and the 900M-1.5GHz band provides over 40dB dynamic range.
• Applications: Ideal for scanning antenna systems and cables, SWR and impedance matching, measuring dual-band and triple-band duplexers, port isolation by frequency band, and measuring insertion loss of filters.
• PC Software Compatibility: Connects to PC software like NanoVNASaver for data display, saving to Touchstone files, and exporting for various radio design and simulation software.
• Durable Design: Features a durable metal case and a metal shield to reduce external interference and improve measurement accuracy.
• Power: Equipped with a built-in 1950mAh rechargeable battery (NanoVNA-H4 option) or 3000mAh battery (TinySA Ultra option) and can also be USB powered via a Type-C port.

Package Contents

4" NanoVNA-H4 Option:

• 1x NanoVNA-H4 Host (with 1950mAh rechargeable battery)
• 1x USB Type-C data cable
• 1x Type-C to Type-C cable
• 2x 15cm SMA male to male RG316 RF cable
• 1x SMA male calibration kit - OPEN
• 1x SMA male calibration kit - SHORT
• 1x SMA male calibration kit - LOAD

4" TinySA Ultra Option:

• 1x Host (with 3000mAh battery, 4" display)
• 1x USB Type-C data cable
• 2x 30cm ALSR100 SMA cables
• 1x SMA-SMA barrel connector
• 1x Antenna with SMA connector
• 1x Lanyard and touch plectrum
• 1x 32GB MicroSD card (plugged in the host)

Specifications

Setup & Calibration

Proper calibration is crucial for accurate measurements. Follow these steps for initial setup and calibration:

1. Power On: Turn on the NanoVNA-H4 using the switch on the top.
2. Initial Screen: Upon first power-on, the screen may display multiple traces and charts (e.g., Smith Chart).
3. Clear Traces:
   • Tap the screen to bring up the menu.
   • Select DISPLAY.
   • Select TRACE.
   • Deactivate unwanted traces (e.g., Trace 0, Trace 1, Trace 2, Trace 3) by tapping them until only one trace (e.g., yellow) remains active.
   • Go BACK.
4. Set Format to SWR:
   • From the DISPLAY menu, select FORMAT.
   • Select SWR. This will set the active trace to display SWR.
   • Go BACK.
5. Clear Markers:
   • From the main menu, select MARKER.
   • Select ALL OFF to clear all markers.
   • Select MARKER 1 to activate only one marker.
   • Go BACK.
6. Set Frequency Range (Stimulus):
   • From the main menu, select STIMULUS.
   • Select START and enter your desired start frequency (e.g., 135 MHz for a 2-meter aerial). Confirm with 'M' for MHz.
   • Select STOP and enter your desired stop frequency (e.g., 155 MHz). Confirm with 'M' for MHz.
   • Go BACK.
7. Perform Calibration:
   • From the main menu, select CAL.
   • Select RESET to clear any previous calibration data.
   • Select CALIBRATE.
   • Follow the on-screen prompts to connect the calibration standards:
     1. Connect the OPEN standard to Port 1 (S11). Tap OPEN on the screen.
     2. Connect the SHORT standard to Port 1 (S11). Tap SHORT on the screen.
     3. Connect the LOAD standard to Port 1 (S11). Tap LOAD on the screen.
     4. Once all standards are measured, tap DONE.
   • You can optionally SAVE the calibration to one of the available slots (e.g., SAVE 0).
   • Go BACK.

Operating Instructions

After calibration, you can connect your antenna or RF component to Port 1 (S11) or Port 2 (S21) for measurement. The device will display the SWR curve within the set frequency range.

1. Connect Device Under Test (DUT): Connect your antenna or other RF component to the appropriate port (e.g., Port 1 for S11 measurements). Use the provided adapter if necessary to protect the main connectors.
2. Observe SWR Curve: The screen will display the SWR curve. Look for the minimum point on the curve, which indicates the resonant frequency of your antenna.
3. Adjust Antenna (if needed): If the minimum SWR is not at your desired frequency, you may need to adjust the physical length of your antenna elements. For antennas with adjustable elements (like a dipole or vertical), loosen the set screws and slide the elements in or out to change the length.
4. Re-measure: After adjusting the antenna, perform another sweep to see the effect on the SWR curve. Repeat until the desired SWR is achieved at your target frequency.
5. Using PC Software: For more advanced analysis and data logging, connect the NanoVNA-H4 to a computer via the USB Type-C cable and use software like NanoVNASaver.

User Tips

• Protect Connectors: Always use the provided SMA-SMA barrel connector or short cables when connecting calibration standards or antennas to avoid wear and tear on the device's main SMA ports.
• Outdoor Measurements: For the most accurate antenna measurements, especially for larger antennas, perform tests outdoors in an open area, away from large metal objects, buildings, or your body, which can interfere with readings.
• Frequency Awareness: Be mindful of the frequency bands you are operating in. Avoid transmitting on restricted bands (e.g., marine or aircraft bands) without proper licensing and equipment, as this can lead to serious issues.
• Regular Calibration: Calibrate the device frequently, especially when changing the measurement frequency range or after connecting/disconnecting components, to ensure measurement accuracy.

Troubleshooting

• Device Not Turning On: Ensure the battery is fully charged. Connect the device to a USB power source using the provided Type-C cable.
• Inaccurate Readings:
  • Perform a full calibration (OPEN, SHORT, LOAD) for the specific frequency range you are measuring.
  • Check all cable connections for tightness and proper seating.
  • Ensure measurements are taken in an environment free from significant RF interference or large metallic objects.
• Screen Unresponsive/Frozen: Try restarting the device by holding down the power button until it turns off, then power it back on.
• PC Software Connection Issues:
  • Ensure the correct drivers are installed for your operating system.
  • Verify the USB cable is functioning correctly and securely connected.
  • Check the device's communication mode settings if applicable.

Warranty & Support

SeeSii is committed to providing excellent product experience and customer service. If you encounter any problems or have questions regarding the use of your NanoVNA-H / NanoVNA-H4, please contact us promptly.

After-Sales Support Email: support@seesiius.com

Our professional technical team and customer service team are available to provide technical advice and support to resolve any issues you may encounter.

Declaration of Conformity

This declaration of conformity is issued under the sole responsibility of the manufacturer.

Manufacturer: Wuyi Zeenko Industrial And Trading co., Ltd.
Address: Shihou Village, Lutan Town, Wuyi county, Jinhua city, Zhejiang Province

Product: Portable vector network analyzer
Model: NanoVNA-H / NanoVNA-H4

We declare that the product described above, to which this declaration of conformity refers to, is in conformity with the relevant Union harmonization legislation: EMC Directive 2014/30/EU

through the technical standards / specifications specify below:

• EN 55032:2015+A11:2020, EN 55035:2017+A11:2020
• EN IEC 61000-3-2:2019/A1:2021, EN 61000-3-3:2013+A1:2019
• EN 61000-4-2:2009, EN IEC 61000-4-3:2020
• EN 61000-4-4:2012, EN 61000-4-5:2014+A1:2017
• EN 61000-4-6:2014, EN 61000-4-8:2010
• EN IEC 61000-4-11:2020

Signed for and on behalf of:

Name: Chao Ma
Position: QA Director
Place and date of issue: Shenzhen, 20 Jun 2024