SV6301A is a handheld vector network analyzer from SYSJOINT. It has a 7 inch touch screen and has a frequency range between 1 MHz and 6.3 GHz. I did a review and teardown of this VNA, you can check out the video below. In this blog post, we will take a look at some of teardown pictures.

SV6301A utilizes a two board desgin. The blue PCB on top contains circuitry for the RF section and the black PCB at the bottom is the control board. The VNA is powered by two 3350 mAh 18650 lithium Ion battery cells.

The main application processor is an F1C200s, which is based on ARM9 architecture. The LVDS driver for the LCD is an MS90C385B. In the picture to the right below, you can also see the touch screen controller integrated onto the flat flex cable. In this picture you can also see a realtime clock chip DS1302.

In the picture to the left below, you can see the LVDS chip again. The QFN to the upper right is an EA3036C three channel power management IC. It has three independent buck converters and can be used to generate three different voltage rails. In the picture there is also an AP2007 synchronous PWM controller chip. The chip towards the bottom right corner is an MP2617 battery charger chip.

SV6301A has a microSD card internal storage, it is located near the S11 port on the main control board.

The RF sections are shielded. The shielding cans are clipped on and can be removed easily.

The component layout of the S11 port on the SV6301A (left below) is very similar to that of nanoVNA-F V3 (right below). Most of the components are the same except there is one additional chip marked 637B.

The S21 port layout (left below) is almost identical to that in the nanoVNA-F V3 (right below). The mixer used is an Analog Devices’ ADL5801 active mixer, which operates between 10 MHz to 6 GHz.

The synthesizer used in the SV6301A is identical to what’s used in the nanoVNA-F V3. It is MAX2870, a 23.5 MHz to 6 GHz fractional/integer-N synthesizer and VCO. There are two of them, one for each port.

In the picture below to the left, you can see a couple of MS5351M clock generators. The tiny QFN marked 8641 is an MXD8641 SP4T RF switch. The microcontroller used on the RF board is an HC32F460, ARM Cortex-M4.

Firmware Download:

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