PlutoSDR Setup on Windows and Linux

[Pavel]

Short answer: Install and verify the Industrial I/O host stack, connect Pluto by USB, confirm its IIO context and only then open GNU Radio or another application. The USB storage page is useful information, but I/Q applications communicate through the IIO device and network-style context.

Before you start​

• Prove Pluto discovery through the Industrial I/O stack before opening GNU Radio or another SDR application.
• Separate USB mass storage, USB networking and I/Q streaming because each function can fail independently.

Step-by-step method​

1. Step 1: Connect Pluto with a known data cable and allow USB storage and network interfaces to enumerate. Keep the optional power input separate unless the setup specifically needs external power.
2. Step 2: Install a current compatible libiio/IIO package and run an IIO information or context-discovery command. Confirm the device attributes can be read before launching a complex application.
3. Step 3: In the application, select the Pluto/IIO source and the detected context, start around 1 to 2 MSPS, set RF bandwidth no wider than necessary and tune a known signal.
4. Step 4: Use manual gain or a documented AGC mode, then run for ten minutes while checking USB stability. Save context URI, sample rate, RF bandwidth and gain mode.

Concrete example​

A common USB context reaches the unit through its USB network interface. Start with a 1 MSPS receive stream, a modest RF bandwidth and a strong known signal. If context discovery fails, changing GNU Radio blocks will not fix the underlying IIO connection.

How to judge the result​

The setup is complete when IIO tools and the SDR application both identify Pluto, device attributes are readable and a repeated stream starts without lost connection.

What to record​

• Start with a moderate sample rate such as 1 to 2 MSPS for receive tests, then increase only after the baseline streams without loss.
• Record IIO context URI, local oscillator frequency, RF bandwidth, sample rate and gain mode for a reproducible Pluto setup.
• Treat any frequency-extension change as removal of software limits, not a guarantee of sensitivity, output power or filtering outside the original specification.

Common mistakes​

• Changing several hardware, software or RF variables at once, which removes the controlled comparison needed to identify the cause.
• Treating one autoscaled screenshot or one unusually good result as proof without recording the settings and repeating the test.
• Treating the USB mass-storage volume as the I/Q data interface leads to confusion when the information page opens but no SDR source appears.

Final check​

Reconnect Pluto and repeat IIO discovery before starting the application. Save the context, firmware, sample rate, RF bandwidth and gain mode that reproduce the result.