Spi Trigger; Figure 8.30 Sequential Chart Of Spi Bus - Rigol DHO900 User Manual

Trigger Parameter Setting
You can refer to
Level Selection and Setting
After the trigger condition setting is completed, you need to adjust the trigger level
to correctly trigger the signal and obtain a stable waveform.
• Level A
Click or tap the input field of Level A to input the level of SCL with the pop-up
numeric keypad. You can also use the corresponding multipurpose knob to set
the value. When the level A information is displayed in the trigger label, you can
also use the trigger level knob to adjust the level of SCL. For details, refer to
descriptions in
• Level B
Click or tap the input field of Level B to input the level of SDA with the pop-up
numeric keypad. You can also use the corresponding multipurpose knob to set
the value. When the level B information is displayed in the trigger label, you can
also use the trigger level knob to adjust the level of SDA. For details, refer to
descriptions in
8.7.15

SPI Trigger

In SPI trigger, after the CS or timeout condition is satisfied, the oscilloscope triggers
when the specified data is found. When using SPI trigger, you need to specify the CLK
clock sources and MISO data sources.
The figure below shows the sequential chart of SPI bus.
SCL
SDA
Trigger Type
Click or tap the drop-down button of Type to select "SPI".
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Noise Rejection
to set the noise rejection under this trigger type.
Trigger Level .
Trigger Level
.
CS
D7 D6

Figure 8.30 Sequential Chart of SPI Bus

Triggering the Oscilloscope
D5 D4 D3 D2 D1 D0
DHO800 User Guide
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