NanoVNA
Very tiny handheld Vector Network Analyzer
User Guide
gen111.taobao.com
2019-07-11
Overview：
We designed NanoVNA based on edy555 (https://twitter.com/edy555), but
modified some circuits, added battery management circuits, and redesigned the
PCB. The PC control software can export Touchstone (snp) files which can be used
for various radio design and simulation software. The improved frequency
algorithm can use the odd harmonic extension of si5351 to support the
measurement frequency up to 900MHz. The metal shield is designed to reduce
the external interference and improve the measurement accuracy. The 50k300MHz frequency range of the si5351 direct output provides better than 70dB
dynamic. The extended 300M-600MHz band provides better than 50dB of
dynamics, and the 600M-900M band is better than 40dB of dynamics. is very
tiny handheld Vector Network Analyzer (VNA). It is standalone with lcd display,
portable device with battery. This project aim to provide an RF gadget but useful
instrument for enthusiast.
DIY's vector network analyzer, with reference to the related design of. Designed
with simple and practical PC control software, you can export Touchstone (snp)
files for various radio design and simulation software through PC software.
NanoVNA is an open source hardware project, everyone can be free to clone and
DIY, but we hope you can do more understanding before you do it, there are
some customers reflected that they have bought the low quality nanoVNA from
other sources. We have found some low quality clones on the Internet which
claimed have completed the project. Buying such hardware may be harm on
NanoVNA performance, or leading to measurement error.
We will continue to provide updates and technical support services for NanoVNA
within 3 years after purchase. You can get the latest detail of products and
software updates from the Web Store: gen111.taobao.com.
We provide 5 firmware on the network hard drive, you can choose the
appropriate brush in accordance with the relevant tutorials, 5 firmware
differences are as follows:
nanoVNA_300_ch：50K-300MHz，5*7 Bitmap font，4 tracks
nanoVNA_900_ch：50K-900MHz，5*7 Bitmap font，4 tracks(Default)
nanoVNA_900_aa：50K-900MHz，7*13 Bitmap font，2 tracks (Antenna Analyzer)
The 800MHz firmware works better at higher temperatures.
nanoVNA_800_ch：50K-900MHz，5*7 Bitmap font，4 tracks(Recommended)
nanoVNA_800_aa：50K-900MHz，7*13 Bitmap font，2 tracks (Antenna Analyzer)
Front panel
You can use the USB interface to connect to computer communications or
connect standard 5V charger charging.
When charging the battery indicates that the battery LED flashes in charge, the
constant light indicates full. When discharging the battery LED constant light
indicates normal discharge, LED flicker indicates low power, please connect the
charger in time to charge.
Toggle the power switch can switch the machine, the battery indicates that the
Led needs to be turned off after 40 seconds of shutdown.
The system LED light and dark changes when the system is properly scanned. You
can move the mark Point or perform a menu operation via the multifunctional
switch, use the touchscreen operation directly also.
Main interface
Basic operations：
1. Set the frequency range (STIMULUS>START/STOP or CENTER/SPAN)
2. Calibration (CAL)
3. Select display format and channel (DISPLAY)
4. Save(SAVE)
You can change the display format and channel selection at any time. In the
normal test mode, tap the right area of the screen or press the multifunctional
switch to call up the menu. Tap the screen or turn the multifunctional switch to
select a menu item.
The initial state of NanoVNA (no data is stored in 0)
Scan range: 50KHz ~ 900MHz
Track 1: LOGMAG CH0 (reflection)
Track 2: SMITH CH0 (reflection)
Track 3: LOGMAG CH1 (through )
Track 4: CH1 stage (through )
Mark 1: Activated
Uncalibrated.
We will test before shipment and connect directly to the SMA port for
calibration, the calibration data is stored in state 0, and the boot will load the
status 0 data directly.
Calibration and Normalization:
The VNA Master is a field portable unit operating in the rigors of the test
environment. In order to ensure measurement accuracy, RF calibration (OSLT)
must be performed prior to making a measurement in the field. Calibrating with
the specified mechanical calibration requires three loads, open, short, and
match(load). Calibration data is saved as user calibration data. It can be saved to
status 0 and can be automatically loaded at the next boot， It can be also saved
to status 1-4 and can be loaded via the RECALL menu.
Click the CAL→CALIBRATE menu to open the calibration interface, then connect
open, short and load three loads in turn, wait for the screen to stabilize and click
on the menu corresponding to calibrate CH 0. The machine is accompanied by a
calibration piece, for the public head calibration parts inside the needle copper is
short-circuited, the interior with a needle white plastic and stainless steel shell
connected to the (LOAD) 50 ohm load, the internal empty for the open. For the
head calibrator, the back uses solder short circuit for short, welding two 100 ohms
resistor for 50 ohm load, open circuit for open.
Isolation calibration of CH 1 requires two load loads to connect CH0 and CH1,
respectively, to obtain the best isolation, usually with only one set of calibration
loads for port 0, and to connect the load Calibrator to CH1, CH0 to remain open,
and then press the ISOLN menu to calibrate.
Connect the CH0 and CH1 of the analyzer with an optional Through Adapter(SMA
to SMA kit or cable), and then press the THRU menu to calibrate. The
normalization operation moves the measurement reference plane to both ends
of the Through Adapter. This function is only available when the measurement
item is S21.
After the calibration is complete, press the Done button, eject the Save screen to
select the required status to save. Once the calibration is complete, the three
calibrators can be connected to port 0 again, and the correct calibration should
be based on the SMITH chart, which should be: when connected to OPEN, the
curves should be concentrated on the far right of the SMITH chart, and when
connecting SHORT, the curves should be concentrated on the leftmost side of the
SMITH chart, When connecting LOAD, the curves should all be concentrated in
the middle of the SMITH chart. Using RF cables to connect Port 0 and port 1, view
S21 curve errors should not exceed 0.1dB. If calibration data abnormalities are
found, they should be re-calibrated.
Note: If there is already saved calibration data, first press “Reset”
to clear the calibration data and then calibrate!
If the calibration has been applied, CAL status is displayed.
It is hidden in a state that has not been applied. C * is the state in which the
unsaved calibration value is applied (it disappears when the power is turned off).
C0 ~ C4 0 to 4 indicates that a saved calibration value has been applied to one of
the save locations.
SAVE Unsaved
It changes to this state when saving by an operation. Each of the characters shown
below C indicates that the following error terms are applied:
D: Directivity, R: Reflection Tracking, S: Source Match, T: Transmission Tracking, X:
Isolation
Select the display trace and display format:
The DISPLAY→TRACE item of the menu can choose to turn the corresponding
display curve on or off, showing that the curve color is consistent with the color
of the interface curve, and the display curve of the final operation is the active
tracking curve, when the menu FORMAT, the SCALE,CHANNEL operation is valid
for the display curve.
The display type can be modified by the DISPLAY→FORMAT of the menu,
DISPLAY→SCALE can adjust the scale, DISPLAY→CHANNEL can select the
measured port.
Setting the frequency range：
The frequency range of a channel can be expressed by three groups of parameters:
Start Frequency, Center Frequency and Stop Frequency. If any of the parameters
change, the others will be adjusted automatically in order to ensure the coupling
relationship among them
fcenter =(fstart +fstop )/2
fspan= fstop- fstart
Where fspan is the span.
Set the center frequency point of the current screen through the
STIMULUS→CENTER of the menu, and display the values of the center frequency
and sweep span, respectively, to the left and right of the bottom of the grid. In
the lower-right corner of the pop-up Settings value screen, click to eject the
soft keyboard and enter the frequency value via the soft keyboard.
Please pay attention to the following points:
The start and stop frequencies will vary with changes to the center frequency
when the span is constant.
In Zero Span, the start frequency, stop frequency and center frequency are always
set to the same value. Now, you can use port 0 as a signal source for a fixed output
amplitude, but it is important to note that this machine uses the clock signal
generator S5351 as the signal source, the output signal is square wave, contains
a larger odd harmonic.
Set the frequency range through the STIMULUS→SPAN of the menu, display the
center frequency and sweep span values on the left and right sides of the grid,
and click on the lower right corner of the pop-up settings value screen to eject
the soft keyboard and enter the frequency values through the soft keyboard.
Please pay attention to the following points:
The start and stop frequency vary with the span when the center frequency is
constant.
When the span is set to the maximum, the analyzer enters full span mode.
In Zero Span, the start frequency, stop frequency and center frequency are always
set to the same value.
Set the start frequency through the STIMULUS→START of the menu and display
the start frequency and stop frequency values on the left and right sides of the
grid, respectively. Click on the bottom right corner of the pop-up settings screen
to eject the soft keyboard and enter the frequency value through the soft
keyboard.
Please pay attention to the following points:
The span and center frequency vary with the start frequency when the Span
does not reach the minimum (The parameters vary with the span, please refer to
“Span”);
In Zero Span, the start frequency, stop frequency and center frequency are
always the same value.
Set the stop frequency through the STIMULUS→STOP of the menu, and display
the start frequency and stop frequency values on the left and right sides of the
grid, respectively, in the lower right corner of the pop-up Settings screen, click
to eject the soft keyboard and enter the frequency value through the soft
keyboard. Please pay attention to the following points:
The span and center frequency vary with the stop frequency. The change of the
span will affect other system parameters. For more details, please refer to
“Span”.
In Zero Span, the start frequency, stop frequency and center frequency are always
the same value.
Menu items:
DISPLAY
○ TRACE
■
0
■
1
■
2
■
3
○ FORMAT
■
LOGMAG
■
■
PHASE
DELAY (Not implemented, computer software provides Group delay functionality)
■
SMITH
■
SWR
■
MORE
■
POLAR
■
LINEAR
○ SCALE
■
SCALE/DIV
■
REFERENCE POSITION
ELECTRICAL DELAY
○ CHANNEL
■
■
CH0 REFLECT
■
CH1 THROUGH
● MARKER
○ SELECT
■
1
■
2
■
3
■
4
○ MARKER→START
○ MARKER→STOP
○ MARKER→CENTER
○ MARKER→SPAN (Not implemented,)
● STIMULUS
○ STAR
○ STOP
○ CENTER
○ SPAN
○ CW FREQ
● CAL
○ CALIBRATE
■
OPEN
■
SHORT
■
LOAD
■
ISOLN
■
THRU
■
DONE
■
SAVE
○ RESET
○ CORRECTION
● RECALL/SAVE
○ 0 (Default)
○ 1
○ 2
○ 3
○ 4
● CLOSE
Basic performance:
● PCB: 54mm x 85.5mm x 11mm (without connectors, switches)
● Measurement frequency: 50KHz -900MHz
● RF output: -13dbm (maximum -9dbm)
● Measurement range: 70dB (50kHz-300MHz), 50dB (300M-600MHz), 40dB
(600M-900MHz));
● Port SWR: < 1.1
● Display: 2.8 inch TFT (320 x240)
● USB interface: USB type-C communication mode: CDC (serial)
● Power: USB 5V 120mA, built-in 400mAh battery, maximum charging current
0.8A
● Number of scanning points: 101 (fixed)
● Display Tracking: 4, Marking: 4, Setting Save: 5
●Frequency Tolerance:<2.5ppm
●Frequency Stability:<0.5ppm
Packing list
NanoVNA host (with 400mAh battery) x 1
USB Type-C data cable x1
30cm SMA male to male RG174 RF cable x2
SMA male calibration kit (OPEN / SHORT /LOAD) x1
SMA female to female connector x1
Block diagram：
NanoVNA Sharp:
This PC software is designed for control NanoVNA and export Touchstone(snp) files.
1
2
3
U2
IP5303
C46
10uF
A
GND 1
L1
R2
1K
R40
2Ω
VDD
C5 C6 C7 C8
100nF
100nF
100nF
100nF
2.54mm 1*2P
2
BAT
1
VBUS B4A9
R5
10KΩ
U3
XC6206P332MR
Vout 2
+5V
5
1
VBUS A4B9
2
SK-12D02-VG3
SW1
T
C
1
C3
1uF
USB_DM
USB_DP
C4
1uF
GND 1
B
DAC_FC
X+
Y+
VDD
3 Vin
24
36
48
9
23
35
47
8
SW2
K1-1502SA
2
LED1
KT-0603R
GND B1A12
6
7
TMS
TCK
LCD_RESET
10
11
12
13
14
15
16
17
29
30
31
32
33
34
37
38
U4
STM32F072CBT6
VDD1
VBAT 1
VDD2
R3 1K
VDD3
PC13 2
3
PC14
VDDA
PC15 4 MCLK
VSS1
OSC_I 5
VSS2
OSC_O 6 NRST
VSS3
NRST 7
VSSA
Boot0 44
PA0
PA1
PA2
PA3
PA4
PA5
PA6
PA7
PA8
PA9
PA10
PA11
PA12
PA13
PA14
PA15
PB0
PB1
PB2
PB3
PB4
PB5
PB6
PB7
PB8
PB9
PB10
PB11
PB12
PB13
PB14
PB15
18
19
20
39
40
41
42
43
45
46
21
22
25
26
27
28
8
U10
TFT_2.8_SPI_18p
D2
SD103AWS
2.2uH
BAT
C1
10uF
3
DN1
DP2
SBU1
CC2
8
7
6
5
9
4
A7
B6
A8
B5
GND A1B12
VOUT
SW
BAT
KEY
EPAD
5
C49
10uF
C47
22uF
2 GND
USB_DM
USB_DP
SBU2
CC1
DN2
DP1
GND 3
B8
A5
B7
A6
4 GND
USB_TYPE-C-31-M-12
1
VIN
2
D1
3
NC/BAT
4
D2
C45
10uF
U1
4
BATLED2
KT-0603R
P1
RE-H022TD-1190 (LF)(SN)
R6
10KΩ
XYSD_GP1
SPI_SCLK
SPI_MISO
SPI_MOSI
LCD_CS
LCD_CD
1
1
2
2
VDD
VDD
GND
LCD_RESET
SPI_SCLK
LCD_CD
LCD_CS
SPI_MOSI
SPI_MISO
RESET
SCK
D/C
CS
SDI
SDO
GND2
VCC3.3V
R4
10
LED
GND3
GND4
GND5
VDD
X+
Y+
XY-
R7
R8
3.9KΩ 3.9KΩ
SD_GP2
SD_CS
I2S_WCLK
I2S_BCLK
GND6
XP
YN
XN
YP
GND
RESET
SCK
D/C
A
CS
SDI(MOSI)
SDO(MISO)
GND2
VCC
LED
GND3
GND4
GND5
GND6
XP
YN
XN
YP
SCL
SDA
B
VDD
I2S_DOUT
NRST
TCK
TMS
1
2
3
4
5
P2
77311-462K05LF
1
2
3
4
5
VDD
Y1
26MHz
C
1
AFC/GND
2
GND
4
VCC
3
OUT
U5
Si5351A-B-GT
C11 100nF
CLK0 10
C12 100nF
CLK1 9 MCLK
CLK2 6
2 XA
3 XB
SCL
SDA
4 SCL
5 SDA
R26
300Ω
R27
300Ω
VDD
1 VDD
7 VDDO
24 AVDD
29 DVDD
6 OVIDD
R28
300Ω
GND 8
C9 C10
100nF100nF
C34 C35 C36
100nF100nF100nF
R13
150Ω
C40 100pF L3
4.7uH
R17
27Ω
2 IN-B
C14 100nF
C42 100pF L4
4.7uH
C15 100nF
R19
390Ω
C16 100nF
U7
SA612AD
1 IN-A
OSC
2 IN-B
18
22
23
27
25
19
5 I2S_DOUT
11
8
12
13
14
15
16
20
21
R20
49.9Ω
15KΩ
C22 100nF
OUT-B 5
R33
15KΩ
C23 100nF
R38
10KΩ
C28
1nF
R30
300Ω
C29
1nF
C38
100nF
OUT-A 4
R34
15KΩ
C24 100nF
OUT-B 5
R35
15KΩ
C25 100nF
R21
49.9Ω
D
30 LDO/SELECT
31 RESET
32 GPIOMFP5/32
33 EP
7 IOVSS
17 AVSS
28 DVSS
R24
100Ω R23
39Ω
C17 100nF
R25
22Ω
1 IN-A
C31
1nF
OSC
2 IN-B
C18 100nF
8
7
6
R22
39Ω
OUT-A 4
R36
15KΩ
C26 100nF
OUT-B 5
R37
15KΩ
C27 100nF
+5V
C43 100nF
L5
C44 100pF
C32
1nF
C33
1nF
TITLE:
2019-05-24
EASYEDA V5.4.12
2
3
4
REV: 3.0
nanoVNA
4.7uH
Date:
1
S10
ICSRC6508_屏蔽支架
1 1
S4
ICSRC6508_屏蔽支架
1 1
S3
ICSRC6508_屏蔽支架
1 1
S2
ICSRC6508_屏蔽支架
1 1
S1
ICSRC6508_屏蔽支架
1 1
S9
ICSRC6508_屏蔽支架1
1
S8
ICSRC6508_屏蔽支架
1
1
S7
ICSRC6508_屏蔽支架
1 1
S6
ICSRC6508_屏蔽支架
1 1
S5
ICSRC6508_屏蔽支架
1
1
U8
SA612AD
3
RX
SMA-K
C30
1nF
R31
300Ω
C21 100nF
C37
100nF
SPI/SELECT
IN1/L
IN1/R
IN2/L
IN2/R
IN3/L
IN3/R
3
E
R32
C20 100nF
6
R18
390Ω
OUT-A 4
+5V
C41 100nF
R12
49.9Ω
OSC
8
R9
82Ω
1 IN-A
7
6
C13 100nF
7
TX
SMA-K
R11
49.9Ω
3
R10
49.9Ω
REF
LOL
LOR
HPR
HPL
MICBIAS
DOUTMFP2
MISOMFP4
I2S_DIN 4
SCL 9 DINMFP1
SDA 10 SCLSSZ
SDAMOSI
R29
300Ω
C19 100nF
D
1 MCLK/1
2 BCLK
3 WCLK
8 SCLKMFP3
26 LDOIN
U6
SA612AD
R16
470Ω
R14
56Ω
MCLK
I2S_BCLK
I2S_WCLK
+5V
C39 100nF
C
U9
TLV320AIC3204IRHBR
5
6
7
Sheet: 1/1
Drawn By: hugen79
8
E