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Serial Bus Analysis
R&S
®
RTB2000
164User Manual 1333.1611.02 ─ 03
12 Serial Bus Analysis
Using the R&S RTB2000 and additional options, you can analyze the following serial
protocols:
●
SPI (Serial Peripheral Interface with 3 lines) and SSPI (Serial Peripheral Interface
with 2 lines) - requires option R&S RTB-K1
See
Chapter 12.2, "SPI/SSPI Bus (Option R&S RTB-K1)", on page 172.
●
I²C (Inter-Integrated Circuit bus) - requires option R&S RTB-K1
See
Chapter 12.3, "I²C (Option R&S RTB-K1)", on page 179.
●
UART/RS232 (EIA-232 serial interface) - requires option R&S RTB-K2
See
Chapter 12.4, "UART / RS232 (Option R&S RTB-K2)", on page 188.
●
CAN (Controller Area Network) - requires option R&S RTB-K3
See
Chapter 12.5, "CAN (Option R&S RTB-K3)", on page 195.
●
LIN (Local Interconnect Network) - requires option R&S RTB-K3
●
See
Chapter 12.6, "LIN (Option R&S RTB-K3)", on page 207.
To analyze parallel buses, you need MSO option R&S RTB-B1 to get the logic chan-
nels. See Chapter 13, "Logic Analyzer (Option R&S RTB-B1, MSO)", on page 220.
12.1 Basics of Protocol Analysis
The analysis of serial data consists of the following main steps:
●
Protocol configuration:
Select the protocol type, configure the input lines and the protocol-specific settings.
●
Decoding:
Select the display format of the decoded data. The digitized signal is displayed on
the screen together with the decoded content of the messages in combs. You can
scale the signal display and zoom into it to see it in more detail.
You can also list the decoded results in tabular form in the bus table.
●
Triggering:
You can trigger on various events that are typical for the configured bus type. For
example, trigger on start or stop of messages, or on serial patterns.
●
Search:
On CAN and LIN buses, you can search for events. The search events are similar
to the trigger events. The search finds all matching events in an acquisition, while
the trigger finds only the trigger event.
Analysis can be performed on analog and digital input channels. Digital channels
require if MSO option R&S RTB-B1.
You can configure 2 protocol buses and select one of the configured buses for analy-
sis.
Basics of Protocol Analysis
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