RIGOL Chapter 5 Trigger
5-32 DS4000E User’s Guide
side of the screen.
2. Specify the data line signal source and adjust the trigger level
Press SDA and select the data line signal source and adjust the trigger level
according to step 1.
3. Specify the trigger condition
Press When, turn the multi-function knob to select the desired trigger
condition and press the knob. You can also press When continuously to switch
the current trigger condition.
Start: The oscilloscope triggers when SDA data transitions from high to low
while the SCL clock is high.
Restart: The oscilloscope triggers when another start condition occurs
before a stop condition.
Stop: The oscilloscope triggers when SDA data transitions from low to high
while the SCL clock is high.
Missing ACK: The oscilloscope triggers when SDA data is high during any
ACK SCL clock bit.
Address: The oscilloscope searches for the specified address and triggers
on the R/W bit behind the preset address.
When this trigger condition is selected, set the address parameters
referring to the introduction in "Set the address parameters".
Data: The oscilloscope searches for the specified value on the data line
(SDA) and triggers on the SCL ACK bit behind the data byte.
When this trigger condition is selected, set the data parameters referring to
the introduction in "Set the data parameters". The current data
information is displayed at the bottom of the screen, as shown in the figure
below. The bit currently selected is highlighted in red. When the data
parameter is modified, the data information changes accordingly.
A&D: The oscilloscope searches for the specified address and data and
trigger when the address and data conditions are met at the same time.
When this trigger condition is selected, set the address parameters
referring to the introduction in "Set the address parameters" and set
the data parameters referring to the introduction in "Set the data
parameters". The current data information is displayed at the bottom of
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