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.

Dan YO3GGX