RIGOL MSO/DS2000A Series - Manual (Page 125)

Chapter 5 To Trigger the Oscilloscope RIGOL
MSO2000A/DS2000A User’s Guide 5-39
I2C Trigger
I2C is a 2-wire serial bus used to connect the microcontroller and its peripheral
device and is a bus standard widely used in the microelectronic communication
control field.
The I2C serial bus consists of SCL and SDA. Its transmission rate is determined by
SCL and its transmission data is determined by SDA, as shown in the figure below.
MSO2000A/DS2000A triggers on the start condition, restart, stop, missing
acknowledgement, specific device address or data value. Besides, it can also trigger
on the specific device address and data value at the same time.
Figure 5-13 I2C Trigger
Trigger Type:
Press Type to open the trigger type list. Rotate
and press down to select
“I2C”. At this point, the trigger setting information as shown in the figure below is
displayed at the upper right corner of the screen. For example,
Source Selection:
Press SCL and SDA to specify the signal sources of SCL and SDA respectively. They
can be set to CH1, CH2 or any channel of D0-D15. For the details, please refer to the
introduction in “
Trigger Source”. The current trigger source is displayed at the
upper right corner of the screen.