UART (RS232) (Universal Asynchronous Receiver/Transmitter)
UART (Universal Asynchronous Receiver/Transmitter) is an EIA serial interface. RS-232/RS-485 send characters as a bit stream; RS-485 is differential and must be converted to logic levels before LA measurement.
Wrong Baud Rate or Polarity scrambles decode—prefer Auto Detect. For channel-prefix differences, see Settings.
Decode Settings
- Channel:
- Tx: Assign the Tx channel.
- Rx: Assign the Rx channel. Field enabled (Enable) when selected. Default: cleared.
- Auto Detect: Auto-detect format options. Field enabled (Enable) when selected. Default: cleared.
- Baud Rate: Bits per second. Wrong rate fails decode. Default: 9600.
- Polarity: Idle High / Idle Low. Wrong polarity reverses Start/Stop. Default: Idle High.
- Parity: None / Odd / Even / Mark / Space. Default: None.
- Data Bits: 4–16. Default: 8.
- Stop Bits: 1–4.5. Default: 1.
- MSB First: MSB after Start when selected; otherwise LSB. Default: cleared.
- Invert Bits: Invert High/Low. Field enabled (Enable) when selected. Default: cleared.
- Show S/P: Show Start/Stop in the waveform. Field enabled (Enable) when selected. Default: cleared.
- Show ASCII: Show ASCII in the report. Field enabled (Enable) when selected. Default: cleared.
- Waveform Area Settings:
- Decode: Show Rx or Tx in the waveform. Rx only when Rx is field enabled (Enable). Default: Tx.
- Show Scale: Show the scale. Field enabled (Enable) when selected. Default: cleared.
- Report Area Settings:
- Idle, Break Line Wrap: Wrap on Idle/Break. Field enabled (Enable) when selected. Default: cleared.
- Show Idle State: Show Idle state. Default: cleared.
- Report Size: Data fields (16 / 32). Default: 16.
- Line Wrap (<= 8Bits): Wrap by data pattern (1st/2nd). Default: cleared (pattern often 0A).
Result
Normal data analysis
With Line Wrap
