Protocol analysis
R&S
®
RTP
531User Manual 1337.9952.02 ─ 12
"Value min "
Specifies the value or sets the start value of a range.
Enter the bytes in msb first bit order. The maximum pattern length is
64 bit. Waveform data is compared with the pattern byte-by-byte.
"Value max "
Sets the maximum value of a range for "Condition" = "In range"/"Out
of range".
Remote command:
TRIGger<m>:I2C:DCONdition on page 1561
TRIGger<m>:I2C:DMIN on page 1562
TRIGger<m>:I2C:DMAX on page 1562
13.2.3.2 Triggering on I²C signals
Prerequisites: An I²C bus is configured, see Chapter 13.2.2.3, "Configuring I²C proto-
col", on page 525.
1. Press the [Protocol] key and select 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 I²C.
5. Select the "Trigger type".
6. For more complex trigger types, enter the address and/or data conditions: address,
acknowledge bits, R/W bit, and data pattern.
For details, see Chapter 13.2.3, "I²C trigger", on page 526
13.2.4 I²C 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.
I²C (option R&S
RTP-K1)
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