User manual

Protocol Analysis
R&S
®
Scope Rider RTH
120User Manual 1326.1578.02 ─ 04
7 Protocol Analysis
Using the R&S RTH and additional options, you can analyze the following serial proto-
cols:
●
Serial Peripheral Interface (SPI) - requires option R&S RTH-K1
●
Inter-Integrated circuit bus (I²C) - requires option R&S RTH-K1
●
UART / RS-232 / RS-422 / RS-485 interfaces - require option R&S RTH-K2
The analysis of serial data consists of three main steps:
●
Protocol configuration: Select the protocol type, and configure the input line as well
as the protocol-specific settings.
●
Decoding: Select the display format of the decoded data. The digitized signal data
is displayed on the screen together with the decoded content of the messages.
You can scale the signal display and zoom into it to see it in more detail.
●
Triggering: You can trigger on various events that are typical for the configured bus
type, for example, on start and stop of messages, or on data patterns.
Analysis is performed on analog input channels, and - if MSO option R&S RTH-B1 is
installed - also on digital channels.
7.1 General Protocol Settings
Access: "Bus" menu
For all serial protocols, the following settings are required:
State
Enables the decoding and the display of the serial bus data.
Bus Protocol
Defines protocol type of the bus for configuration and trigger settings.
General Protocol Settings