tinySA Web

Start / stop Center / span

Start

MHz

Stop

MHz

Points

Model maximum (450) Quick, for continuous (200) Custom

Acquisition

scan — text, frequency + level per line scanraw — binary, faster, no device screen update

Last sweep: —
Device range: —
Device sweep: —

Sent to the device as you change them. The console has no query for these, so the page shows what it last sent, not what the device has.

RBW

Attenuation

LNA on (Ultra) Spur removal

Device trace math (calc)

Applies on the device, so it affects what scan returns. The page has its own max/min/average above the plot that don't touch the device.

External gain / loss

Negative for an attenuator in front of the input, positive for a preamp. ext_gain.

Signal-generator output. Frequency is sent as sweep cw, level as level, modulation as modulation; the big button sends output on|off. Switching back to Analyzer turns the output off.

Band

Frequency

MHz

Level -20 dBm

Modulation

Level range −76 … +13 dBm is the library's check; the device clips to what the band allows.

While recording, every sweep (single or continuous) is kept with a timestamp. Works in any view.

Sweeps: 0
Size: 0 kB

Save

The waterfall CSV matches the plot: timestamps down, frequencies across — the same shape plotting_waterfall_static.py builds. The sweep log is the long format for pandas.

CSV is Frequency_Hz,Signal_Strength_dBm, the layout of tsapython's save_scan_csv.py, so files from either tool load in the other.

Session

Sweep, held trace, overlay, markers and settings as one JSON file.

Compare

No overlay loaded. A loaded frequency,dBm CSV is drawn dotted under the live trace; toggle it in Settings.

Records the raw replies to a fixed set of commands, with timings, into a file to attach to a bug report. Includes one small scanraw frame as hex so the binary framing can be checked. Changes nothing on the device.

scanraw scale check

Runs scan and scanraw on the current range and compares them (what plotting_scanraw.py plots). A constant offset means the scale factor is wrong for this firmware.

Calibration output

MHz

The reference square wave on the CAL connector (caloutput) — handy for checking level accuracy with a cable to the input.

Theme

Dark Light

Trace colours

Instrument (yellow, magenta max, cyan min) Blue / amber / green

Reference level

Floor

The level axis and the waterfall colour range.

Waterfall palette

Page-side average depth

sweeps

scanraw scale factor

dBm = value ÷ 32 − scale. Leave blank unless a diagnostic sample shows the binary levels offset from the text ones.

Compare

Draw the loaded overlay

Device

Send resume and restore the device sweep on disconnect

Debugging Echo raw received chunks in the console

Windows

Markers

Click the plot to place one (up to 6). Δ columns are relative to marker 1.

#	Frequency	Level dBm	Max hold	−3 dB BW	Δ level dB	Δ freq

No markers yet.

Device console

Log