Lyons NanoVNA User manual

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N anoV N A User Guide
1. ntroduction
i. What is N anoV N A
ii. What is required for operation
iii. Basics of N anoV N A
iv. Oscillation frequency of N anoV N A
2. First thing
3. input method
4. How to read the screen
i. Main screen
a. 1. START 2. STOP frequency
b. 3. Marker
c. 4. Calibration status
d. 5. Reference position
e. 6. Marker status
f. 7. Trace status
g. 8. Battery status
ii. Main screen 2
a. 9. CE N TER frequency 10. span
b. Menu screen
c. 11. Menu
iii. Keypad screen
a. 12. N umeric keys

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b. 13. Back key
c. 14. Unit key
d. 15. nput eld
5. Start measurement
i. Basic measurement sequence
6. Calibration method
7. function
i. Trace display
a. Trace format
b. Trace channel
ii. marker
iii. Time domain operation
a. Time domain bandpass
b. Time domain low pass impulse
c. Time domain lowpass step
a. Step response example
d. Time domain window
e. Setting the wavelength reduction factor (Velocity Factor) in the time domain
f. Set frequency from marker
iv. Setting the measurement range
a. Setting the start frequency and stop frequency
b. Set center frequency/span
c. Zero span
d. Temporarily stop measurement
v. Calibration and setup recall
vi. Equipment settings

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a. Touch panel calibration and testing
b. Save instrument settings
c. Show version
d. Firmware update
8. How to update the rmware
i. How to get the rmware
a. ttrftech version rmware
b. hugen version rmware
c. Build it yourself
ii. How to write the rmware
a. Writing with dfu-util (Ubuntu)
b. Writing with dfu-util (macOS)
c. Writing with dfu-util (Windows 10)
iii. How to write the rmware (Windows GU )
a. Convert the le format with DFU File Manager.
b. Writing rmware with DfuSe Demo
9. Firmware Development Guide
i. Build with Docker
ii. On-chip debugging with Visual Studio Code
a. tasks.json
b. launch.json
c. Start debugging
10. Example of use
i. Bandpass lter adjustment
ii. Antenna adjustment
a. Trace settings

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iii. Cable check
iv. Common mode lter measurement

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ntroduction
This document is an unocial user guide for N anoV N A. The URL is https://cho.github.io/ N anoV N A-manual/.
t is managed by the github repository .
Please send Pull-request when there are corrections such as discrepancies with the latest rmware.
t is also available in PDF format on the Releases page on GitHub.
https://github.com/cho/ N anoV N A-manual/releases
What is N anoV N A
There are several types of N anoV N A hardware and this document covers the following hardware:
ttrftech version (original) ttrftech/ N anoV N A
hugen version hugen/ N anoV N A-H
These hardware have almost the same components on the circuit, and common rmware is available.
What is required for operation
You need at least the following:
N anoV N A body
SMA LOAD  Ω
SMA SHORT
SMA OPE N

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SMA Female to Female Through Connector
SMA Male to Male cable × 2
Basics of N anoV N A
V N A (Vector N etwork Analyzer) measures the frequency characteristics of reected power and passed power of a high frequency
network (RF N etwork).
N anoV N A measures the following factors:
nput voltage /Q signal
/Q signal of reected voltage
/Q signal of passing voltage
From here we calculate:
Reection coecients S
Transmission coecient S
The following items that can be calculated from these can be displayed.
Reection loss
Passage loss
Complex impedance
resistance
reactance
SWR
Such.

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Oscillation frequency of N anoV N A
The N anoV N A measures the reection coecient and transmission coecient at 101 points in the measurement frequency band.
The local frequency of N anoV N A is kHz to MHz. Frequencies above this use harmonic mode. The fundamental wave is not
attenuated even in harmonic mode. The usage modes for each frequency are as follows.
Up to MHz: fundamental wave
From MHz to MHz: rd harmonic
MHz to MHz: th harmonic
Especially when checking the gain of the amplier, it is necessary to be careful that the fundamental wave is always input.
The input is in each case converted to an intermediate frequency of kHz. The signal is analog-to-digital converted at kHz
sampling. The digital data is processed by the MCU.

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First thing
t must always be calibrated rst before it can be used. nitially calibrate as follows.
Make sure START is at kHz
Make sure STOP is MHz
Calibrate according to the calibration method

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input method
The N anoV N A has the following inputs.
Touch panel long tap
Lever switch
L/L long press
R / R long press
Push / Push and hold
Power slide switch

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How to read the screen
Main screen
1. START 2. STOP frequency
Displays the respective frequencies when start/stop is specied.
3. Marker
The position of each marker on the trace is displayed. The selected marker can be moved by the following methods.