Keysight Technologies DSO-X 2002A, User Manual

Page: 322 / 352

322 Keysight InfiniiVision 2000 X-Series Oscilloscopes User's Guide
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I2C/SPI Triggering and Serial Decode
I2C Serial Decode
To set up the oscilloscope to capture I2C signals, see “Setup for I2C Signals" on
page 317.
To set up I2C serial decode:
1 Press [Serial] to display the Serial Decode Menu.
2 Choose 7-bit or 8-bit address size. Use 8-bit address size to include the R/W
bit as part of the address value, or choose 7-bit address size to exclude the
R/W bit from the address value.
3 If the decode line does not appear on the display, press the [Serial] key to turn it
on.
4 If the oscilloscope is stopped, press the [Run/Stop] key to acquire and decode
data.
You can use the horizontal Zoom window for easier navigation of the acquired data.
See Also • “Interpreting I2C Decode" on page 323
• “Interpreting I2C Lister Data" on page 324
• “Searching for I2C Data in the Lister" on page 324
NOTE
For I2C triggering setup see “I2C Triggering" on page 318.
NOTE
If the setup does not produce a stable trigger, the I2C signals may be slow enough that the
oscilloscope is AutoTriggering. Press the [Mode/Coupling] key, then press the Mode softkey
to set the trigger mode from Auto to Normal .