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Triggering the Oscilloscope
Trigger Mode
In Sweep item, select Auto, Normal, or Single as the trigger mode. For details, refer to
descriptions in
Trigger Parameter Setting
You can refer to
Trigger Level
Click or tap the Level input field to set the trigger level with the pop-up numeric
keypad. You can also use the front-panel trigger level knob or the corresponding
multipurpose knob to set the trigger level. For details, refer to descriptions in
Level
. The current trigger level is displayed in the trigger information label at the top
of the screen.
8.7.14
I2C Trigger
I2C is a 2-wire serial bus used to connect the microcontroller and its peripheral
device. It 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. The
instrument triggers on the start condition, restart, stop, missing acknowledgment,
specific device address, or data value. Besides, it can also trigger on the specific
device address and data values at the same time.
Trigger Type
Click or tap the drop-down button of Type to select "I2C".
HDO4000 User Guide
104
Trigger Mode
.
Noise Rejection
to set the noise rejection under this trigger type.
Figure 8.26 Schematic Diagram of I2C Protocol
Copyright ©RIGOL TECHNOLOGIES CO., LTD. All rights reserved.
Trigger
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