Rohde & Schwarz Scope Rider RTH1004 - Page 188

Protocol Analysis
R&S
®
Scope Rider RTH
188User Manual 1326.1578.02 ─ 12
Figure 9-13: Comb display of a decoded I²C signal, triggered on address 2A (hex)
The color-coding of the various protocol sections and errors simplifies the interpretation
of the visual display.
Table 9-1: Color codes of decoded I²C signals
Color, display element Description
Green brackets [...] Start and end of frame
Green frame header Read frame. Text indicates transfer direction (R = read) and address of the
frame (hex)
Cyan frame header Write frame. Text indicates transfer direction (W = write) and address of the
frame (hex)
Yellow comb Address
Cyan comb Data bytes
Violet Acknowledge bit
Red Missing acknowledge bit, error in frame, insufficient frame (end of acquisi-
tion before decoding has been completed)
In "Protocol" mode, decoded data is shown in tabular form.
I2C (Option R&S RTH-K1)