In this NanoVNA-F V2 there are two ADF4350 wideband synthesizers, one for each port. The main MCU used in this NanoVNA is a GD32F103, an ARM Contex-M4 microcontroller. Next to the touch controller, there is a 25Q16 16 MB flash memory chip that is used to store the firmware and calibration data. Moving towards the middle section of the mainboard, here you can see the touch screen controller chip XPT2046 for controlling the 4-wire resistive touch screen. Here you can see a buzzer and an unidentified 8 pin chip, which unfortunately had its markings sanded off. The picture to the right is a close-up of the bottom right corner of the circuit board. Here you can see an IP5306 charging and discharging controller chip that handles both the battery charging and power bank functionality. The picture to the left below is a close-up of the battery management section of the circuit. The shielding cans were clipped on rather than soldered on making their removal an easy task. Once the riser board for the battery is removed, you can see the main circuit board as shown below.Īnd here is a picture of the main board with the shielding cans removed. On the other side of the PCB, there is a large Lipo battery (19 Wh) mounted on a riser board. On the same side of the PCB you can also see what is presumably an I2C header and a programming header. Judging from the four wire traces on the LCD we can tell that this touch screen uses 4-wire resistive sensing. The LCD touch screen is placed on one side of the PCB as you can see in the picture to the left below. The NanoVNA-F V2 is enclosed in a beautiful aluminum case, with a diagram on the back clearly illustrating the relationship among the different S parameters in a two port network. A link to the video review is included towards the end. In this blog post, I will share some of the teardown pictures and take a look at its signal generator capabilities. It boasts a 5 Ah Lipo battery that allows continuous use up to 7 hours. It features a large 4.3 inch touch screen and compared to other Nano VNAs of similar specs (50 kHz – 3 GHz), this one appears to be very well made and came with lots of quality accessories. Recently, I got my hands on a NanoVNA-F V2 made by SYSJOINT.
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