RIGOL Chapter 5 Trigger
5-36 DS4000E User’s Guide
source of the clock line and data line.
Turn TRIGGER
LEVEL to adjust the trigger level (please refer to
“
Trigger Level”). The current trigger level is displayed at the upper-right
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. Set the trigger condition
Press When to select “TimeOut” or “CS”.
TimeOut: the oscilloscope starts to search for the data (SDA) on which to
trigger after the clock signal (SCL) stays in the idle state for the specified
period of time. When this trigger condition is selected, specify the timeout
time referring to the introduction in "Specify the timeout time".
CS: the oscilloscope starts to search for the data (SDA) on which to trigger
when the CS signal is valid. When this trigger condition is selected, set the
CS signal referring to the introduction in "Set the CS signal".
4. Specify the timeout time
When “TimeOut” is selected in When, press TimeOut and turn the
multi-function knob
or the inner knob of the navigation knob to adjust the
minimum time of the idle state at a relatively smaller step or turn the outer knob
of the navigation knob to adjust the minimum time of the idle state at a
relatively larger step. The range is from 100 ns to 1 s.
Note: The larger the rotation amplitude of the outer knob of the navigation
knob is, the faster the variation of the value will be. When you need to adjust the
time value within a relatively larger range, this function can help you quickly
finish the setting.
5. Set the CS signal
When “CS” is selected in When,
a. Press CS to select CH1 to CH4 (please refer to “Trigger Source”) as the
channel source of the CS line. The signal source currently selected is
displayed at the upper-right side of the screen.
Note: Channels that are turned off can also be selected as the signal
source of the CS line.
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