【實用工具app】Blue VNA|最夯免費app

This application can be used to fully control a miniVNA Vector Network Analyzer. Is still in beta so your feedback is essential to make it better. Current version has the following features:

- fully control the data acquisition from a miniVNA, with or without the Extender;

- work over USB, bluetooth or WiFi (if available);

- support for all Smartphones and Tablets with a resolution higher than 320x240, based on Android version 2.2 or higher;

- can display reflection data in rectangular or Smith Chart mode;

- intuitive and wizard based calibration interface to speed up the calibration procedure;

- calibration data is saved in the configuration file for each mode (Antenna/Transmission/Frequency), so no need to repeat the procedure each time you start the application;

- if no calibration data is available at startup, calibration procedure is initiated automatically;

- offline mode support allows you to load and/or save vectorial data without connecting to a miniVNA. This mode can be used to play with all the features available for both Standard and Pro versions. Some sample files are included in the package;

- internal Smartphone memory is used if no SD card available;

- export data in CSV, ZPLOTS or S1P formats compatible with many existing applications;

- save PNG screenshots;

- demo capture file included to be able to play with the application even without a VNA;

- virtual LED to display current connection mode: BLUE – Bluetooth connected, YELLOW – BT connection in process, RED – Error connecting over Bluetooth, GREEN – Offline Mode;

- automatically enter Offline Mode at startup if Bluetooth is disabled;

- antenna (reflection) and Transmission modes support with the following features:

- gesture (Multi Touch) support for horizontal zoom and frequency shift without a new capture;

- parameters that can be measured : SWR, |Z|, Return Loss, Phase, Rs, |Xs| for miniVNA and signed Xs for miniVNA Pro;

- you can select one of the predefined bands (all HAM bands), HF (0.1 – 30MHz), or a custom frequency interval (anywhere between the frequency range of the connected analyzer);

- select parameter to display (using different colors);

- an on screen marker can be activated / deactivated and freely moved by dragging it around the screen;

- display all the parameters values at the marker position (only the ones you manually selected);

Frequency generator mode with the following features:

- 2 independent channels (for miniVNA pro) or 1 channel (for miniVNA standard);

- normal or sweeper mode;

- independent attenuator control per each channel (from -60dB to 0dB), only for miniVNA Pro;

- adjustable phase difference between the channels (0-180 deg);

- extremely easy AND intuitive operation, even with small screen devices;

- possibility to manually enter the frequency through a numeric keypad;

- working in manual frequency set OR continuous (live) mode;

- rotary knob to change parameters in both manual or live modes. The knob provides acceleration;

- lock mode to prevent accidentally settings changes;

- frequency calibration can be done in a very intuitive mode from Generator mode.

Cable data mode with the following features:

- background control graphs for Phase and Loss, calculation is done automatically;

- just connect the cable to be measured at the DUT connector with the other end open;

- include a list of well-known coax cables and their Velocity Factor;

- measure and calculate cable length from less than 1m to hundreds of meters;

- cable length is measured in 2 steps, for a better precision (second step reduce the frequency interval);

- operate in meter or feet mode;

- measure cable loss for different frequencies from 0.1 To 180/200 MHz;

- can work in Offline mode, if the cable was measured before and data saved in a file.

X-tal mode:

- measure resonance frequency, R and Q in manual or auto mode

More details are available in the included help or on my web site.

Thank you in advance for your feedback.

Dan YO3GGX

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