Signal Generator

The NanoVNA-F V3 includes a built-in signal generator that outputs a continuous-wave (CW) signal from 1 MHz to 6000 MHz. This is useful for testing receivers, driving mixers, or verifying external measurement equipment.

Enable the signal generator

1. Tap STIMULUS → SIGNAL GENERATOR.
2. Tap RF OUT to toggle the output on.
3. The signal is now present on the RF OUT SMA connector.

Set the output frequency

1. From the signal generator screen, tap FREQ.
2. Enter the desired frequency using the on-screen keypad.
3. Tap Ok to confirm.

The frequency range is 1 MHz to 6000 MHz.

Adjust output power

1. From the signal generator screen, select the power level.
2. Available levels: 0 dB, -3 dB, -6 dB, -9 dB.

Caution

Power adjustment is only effective above 23.5 MHz. Below 23.5 MHz, the output power is fixed regardless of the selected level.

Turn off the signal generator

Tap RF OUT again to toggle the output off. The signal generator screen remains visible but no signal is emitted.

Note

While the signal generator is active, normal sweep measurement is paused. Exit the signal generator screen to resume sweeping.

Tip

The output power levels are relative. 0 dB represents the maximum output power of the device, not an absolute power level in dBm. Use an external power meter for precise absolute power measurements.