Rigol DS2000E Series, Руководство пользователя, Страница: 120 / 283

RIGOL Chapter 5 To Trigger the Oscilloscope
5-38 DS2000E User’s Guide
SCL and its transmission data is determined by SDA, as shown in the figure below.
DS2000E triggers on start condition, restart condition, stop condition, 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 5-14 I2C protocol diagram
Trigger Type:
Press Type to open the trigger type list. Rotate
and press down to select
"I2C". At this point, the trigger setting information is displayed at the upper right
corner of the screen. For example, . The trigger type is I2C trigger;
the trigger source is CH1; the trigger level is 0.00 V.
Source Selection:
Press SCL and SDA to specify the signal sources of SCL and SDA respectively. They
can be set to CH1 or CH2. 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.
Note: Select channel with signal input as trigger source to obtain stable trigger.
Trigger Condition:
Press When to select the desired trigger condition.

Start: trigger when SDA data transitions from high to low while SCL is high.

Restart: trigger when another start condition occurs before a stop condition.

Stop: trigger when SDA data transitions from low to high while SCL is high.

Missing ACK: trigger when the SDA data is high during any acknowledgement of
SCL clock position.

Address: trigger on the read or write bit when the preset address is met. After