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PDF , , http www jisupdfeditor com ,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 50k 300MHz 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 . We provide 3 firmware on the network hard drive you can choose the. appropriate brush in accordance with the relevant tutorials 3 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 . 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 pass . Track 4 CH1 stage pass ,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 CH 0 and CH 1 .
respectively to obtain the best isolation usually with only one set of calibration. loads for port 0 and to connect the load Calibrator to CH 1 CH 0 to remain. open and then press the ISOLN menu to calibrate , Connect the ch0 and ch1 of the analyzer with an optional Through Adapter and. then press the ISOLN 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 5dB If calibration data abnormalities are. found they should be re calibrated , Note If the calibrated status recalibration requires first in the calibration menu. press Reset to clear the calibration data and then recalibrate . 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 error 0 5ppm,Block diagram , 1 2 3 4 5 6 7 8. U10, C46 U2 C47 C49 TFT 2 8 SPI 18p, 10uF IP5303 22uF 10uF D2. SD103AWS GND, 1 8 U4 BATLED2 GND, VIN VOUT LCD RESET RESET. 2 7 L1 2 2uH VDD STM32F072CBT6 KT 0603R RESET, D1 SW BAT SPI SCLK SCK.
3 6 SCK, NC BAT BAT 24 VDD1 VBAT 1 LCD CD D C, 4 5 D C. D2 KEY 36 VDD2 LCD CS CS,A 9 R3 1K CS A, C45 EPAD C1. C5 C6 C7 C8 48 VDD3 PC13 2 SPI MOSI SDI, U1 100nF. 100nF, 100nF, 100nF 9 P1 SDI MOSI , 10uF 10uF 2 54mm 1 2P VDDA PC14 3 SPI MISO SDO. R2 4 RE H022TD 1190 LF SN SDO MISO , PC15 VDD GND2.
USB TYPE C 31 M 12 1K 2 BAT 23 MCLK 1 GND2, VSS1 OSC I 5 1 VCC3 3V. 1 35 2 VDD VCC, SW2 VSS2 R6 2 R4 10 LED, LED, OSC O 6 NRST. R40 47 VSS3 NRST 7 10K GND3, B8 K1 1502SA 8 44 GND3. GND 3, GND 1, SBU2 2 VSSA Boot0 GND4, A5 LED1 2 GND4. CC1 GND A1B12 GND5, B7 KT 0603R 10 18 X GND5, DN2 PA0 PB0 VDD GND6.
A6 C T 11 19 Y GND6, DP1 GND B1A12 PA1 PB1 X XP, USB DM R5 12 20 SD GP1 XP. PA2 PB2 Y YN, USB DP A7 10K 1 13 39 SPI SCLK YN, DN1 VBUS B4A9 PA3 PB3 X XN. B6 SK 12D02 VG3 14 40 SPI MISO XN, DP2 PA4 PB4 Y YP. A8 SW1 DAC FC 15 41 SPI MOSI YP, SBU1 VBUS A4B9 U3 PA5 PB5 R7 R8. X 16 42 LCD CS, 4, 3, 2, 1, 5, B5 CC2, 5V XC6206P332MR VDD PA6 PB6 3 9K 3 9K .
Y 17 43 LCD CD, PA7 PB7, Vout 2 29 45 SCL, PA8 PB8. 30 46 SDA, 4 GND, 2 GND, 3 Vin PA9 PB9 SD GP2, 31 PA10 PB10 21. USB DM 32 22 SD CS,B GND 1, C4 USB DP PA11 PB11 I2S WCLK B. 1uF 33 PA12 PB12 25, C3 TMS 34 26 I2S BCLK, 1uF TCK PA13 PB13. 37 PA14 PB14 27, LCD RESET 38 28 I2S DOUT VDD, PA15 PB15 P2.
77311 462K05LF, 1, NRST 1, 2, 2, 3, TCK 3, 4, TMS 4. 5, 5, VDD, U5, Si5351A B GT R26, 300 , Y1 2 XA C11 100nF. 26MHz CLK0 10, 3 XB CLK1 9 MCLK C12 100nF,C 1 4 CLK2 6 C. AFC GND VCC SCL R27 U9, 2 3 4 SCL 300 , GND OUT SDA TLV320AIC3204IRHBR. 5 SDA, 1 VDD, VDD 24 AVDD 18, REF, 7 VDDO GND 8 R28 29 DVDD LOL 22.
300 6 OVIDD 23, LOR C37, C9 C10 HPR 27 100nF, MCLK 1 MCLK 1 25. 100nF100nF, I2S BCLK HPL, C34 C35 C36 2 BCLK MICBIAS 19. 100nF100nF100nF I2S WCLK 3 WCLK 5 I2S DOUT, DOUTMFP2. MISOMFP4 11, 8 SCLKMFP3, 5V 26 LDOIN, C39 100nF, R13 I2S DIN 4. 150 4 7uH SCL 9 DINMFP1, C40 100pF L3 R29, 300 SDA 10 SCLSSZ.
C19 100nF SDAMOSI, U6 12,D R14 R16 SA612AD SPI SELECT D. 13, 6, 7, 8, 56 470 IN1 L, 14 IN1 R, R10 R11 C13 100nF OSC 15 IN2 L. 49 9 49 9 1 IN A R32 15K C22 100nF 16, OUT A 4 IN2 R. TX 20 IN3 L, SMA K R9 R17 2 IN B OUT B 5 R33 15K C23 100nF 21 IN3 R. 82 27 , C14 100nF R38, 3, 10K 30 LDO SELECT, 31 RESET.
C28 C29 32 GPIOMFP5 32, 5V 1nF 1nF, C41 100nF R30. R12 300 33 EP, 49 9 C20 100nF, C42 100pF L4 4 7uH U7. SA612AD 7 IOVSS, 6, 7, 8, R18 17 AVSS, 390 28 DVSS. C15 100nF OSC, 1 IN A OUT A 4 R34 15K C24 100nF, R19. 390 , C16 100nF 2 IN B OUT B 5 R35 15K C25 100nF S9 S10.
E ICSRC6508 1 ICSRC6508 E, 1 1 1, 3, S8 S4, R20 R21 C30 C31 ICSRC6508 ICSRC6508 . 49 9 49 9 R31 1nF 1nF 1 1 1 1, 300 S7 S3, C21 100nF ICSRC6508 ICSRC6508 . U8 1 1 1 1, SA612AD S6 S2, RX ICSRC6508 ICSRC6508 . 6, 7, 8, SMA K R22 1 1 1 1, 39 S5 S1, C17 100nF OSC. ICSRC6508 ICSRC6508 , 1 IN A OUT A 4 R36 15K C26 100nF 1 1 1 1.
R24 R25 2 IN B R37 15K C27 100nF, 100 R23 22 OUT B 5. 39 , C18 100nF, 3, C32 C33, 1nF 1nF, 5V, C43 100nF TITLE . L5 4 7uH nanoVNA REV 3 0, C44 100pF, Date 2019 05 24 Sheet 1 1. EASYEDA V5 4 12 Drawn By hugen79, 1 2 3 4 5 6 7 8.


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