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Serial Trigger and Decode
The serial trigger and decode function feature allows for the analysis and decoding of digital serial data
signals. It is particularly useful when working with communication protocols such as I2C, SPI, UART,
CAN, and LIN.
The serial trigger function enables the oscilloscope to trigger on specific events or patterns within the
serial data stream. This ensures that the oscilloscope captures the desired data for further analysis. For
example, you can set the trigger to activate when a specific byte, word, or frame pattern is detected within
the serial data.
Once the oscilloscope triggers on the desired event, the decode function comes into play. It interprets the
raw serial data and decodes it into a human-readable format, making it easier to analyze and understand
the communication between devices. The oscilloscope can automatically identify and display various
elements of the serial data, such as start and stop bits, addresses, data bytes, and even error conditions.
The decoded information is displayed alongside the corresponding waveform, providing a comprehensive
view of the digital signal. This allows you to quickly identify and analyze specific data packets or troubleshoot
communication issues by visually inspecting the waveform and the decoded data simultaneously.
The 2510B series provides I2C, SPI, UART, CAN and LIN serial trigger and decode. This chapter
introduces the method of triggering and decoding these serial signals in detail.
6.1 I2C Trigger and Serial Decode 81
6.1.1 I2C Setup 81
6.1.2 I2C Trigger Conditions 83
6.1.3 I2C Trigger Configuration 86
6.1.4 I2C Serial Decode 87
6.1.5 Interpreting I2C Decode 88
6.2 SPI Trigger and Serial Decode 89
6.2.1 SPI Setup 89
6.2.2 SPI Trigger 91
6.2.3 SPI Serial Decode 92
6.2.4 Interpreting SPI Decode 93
6.3 UART Trigger and Serial Decode 94
6.3.1 UART Setup 94
6.3.2 UART Trigger 96
6.3.3 UART Serial Decode 97
6.3.4 Interpreting UART Decode 98
6.4 CAN Trigger and Serial Decode 99
6.4.1 CAN Setup 99