Rohde & Schwarz RTP Series - UART Decode Results

Protocol analysis
R&S
®
RTP
554User Manual 1337.9952.02 ─ 12
1. Press the [Protocol] key and selet the "Shortcuts" tab.
2. Press "Setup trigger".
3. Tap the "Source" button and select the "Serial bus" trigger source.
4. Select the serial bus that is set to UART.
5. Select the "Trigger type" and "Trigger source".
6. For more complex trigger types, enter the data conditions: pattern, position, index.
For details, see Chapter 13.2.3, "I²C trigger", on page 526
13.4.4 UART decode results
When the configuration of the serial bus is complete, the signal can be decoded:
1. In the "Serial Bus" dialog > "Setup" tab, enable "Decode".
2. In the "Serial Bus" dialog > "Display" tab, select additional result display settings:
"Show table" and "Show binary".
3. If required, enable "Zoom coupling"
For a description of the display settings, see also Chapter 13.1.3, "Display",
on page 514.
The instrument captures and decodes the signal according to the standard definition
and the configuration settings.
The color-coding of the various protocol sections and errors simplifies the interpretation
of the visual display. The decode information condenses or expands, depending on the
horizontal scale. Various data formats are available to show the result values.
Decode Results Table
The "Decode results" box shows the detailed decoded data for each word.
The decoding process considers the "Bit order" configuration setting of the signal and
displays the binary result MSB first.
Table 13-5: Content of the Decode results table
Column Description
Number of Frames
Source Line, Tx or Rx
UART/RS-232/RS-422/RS-485 (option R&S RTP-K2)