Date/Time & Average

Set the date and time

The NanoVNA-F V3 has a real-time clock used for timestamping saved files.

1. Tap CONFIG → DATE/TIME.
2. Enter the current date using the on-screen keypad.
3. Tap Ok to confirm.
4. Enter the current time.
5. Tap Ok to confirm.

Note

The real-time clock is battery-backed and maintains the time while the device is powered off. If the date/time resets after being powered off for an extended period, the internal battery may need attention.

Configure sweep averaging

Averaging reduces measurement noise by combining multiple sweeps. Higher averaging values produce smoother traces at the cost of slower update rates.

1. Tap CONFIG → AVERAGE.
2. Enter the number of sweeps to average.
3. Tap Ok to confirm.

Setting average to 1 disables averaging (each sweep displays independently). Higher values like 4 or 8 are useful when measuring low-level signals or when you need clean trace data for export.

Tip

Start with no averaging for interactive tuning and exploration. Switch to averaging of 4 or higher when you need a clean, stable measurement for documentation or export.

Caution

Averaging slows the effective sweep rate proportionally. An average of 8 means the trace updates at one-eighth the normal speed. This makes real-time tuning sluggish, so disable averaging when making physical adjustments to your device under test.