Eugene Color Electrical Tools: Other Vector Analyzer

Eugene Color lists this vector network analyzer under Electrical Tools in the color Other; the case is black plastic. Its 2.8 Inch TFT screen has a 320*240 resolution. The unit has lower power-supply noise when using harmonics, a MicroSD slot for test data, RTC support, and ports named Port1 and Port2. The card supports up to 32GB in SPI mode.

The source specifies a 2.1300mAh battery and 6 hours of continuous use, while the package list specifies 1 unit with a 650mAh battery. PC control software can export snp files for radio design and simulation software. An updated algorithm uses odd harmonics of si5351 for measurements up to 900MHz.

Direct output at 50k-300MHz provides better than 70dB dynamic range; the extended 300M-600MHz and 600M-900M bands provide better than 50dB and 40dB, respectively. Measurement frequency is listed as 50KHz~300MHz, or 50KHz~900MHz with extended firmware; units are updated before shipping. RF output is -13dbm, with a -9dbm maximum; frequency accuracy is <0.5ppm and port SWR is <1.1.

It has a USB type-C interface, CDC serial communication, 5V 120mA USB power, a 3.7v battery specification, and 101 fixed calibration and scanning points. Tracking and marking are each listed as 4, with 5 settings saves. The PCB measures 85.5 * 54 * 11mm / 3.4 * 2.1 * 0.4in without connectors and switches; package weight is 245g.

The package includes 1 USB Type-C cable, 1 25cm USB TypeC to TypeC cable, 2 20cm SMA male-to-male RG174 RF cables, and 1 SMA calibration set. Prepare an SMA cable for DIY use. The unit has no metal shield, and signals can interfere with measurements above 300M, so it is recommended for studying the principles and for lower-frequency use. Its case can be opened to view the circuit.