3-39
Triggering the Oscilloscope
To use SPI triggering
Assign source channels to the clock, data, and frame signals
1Press the Signals softkey to access SPI trigger settings for clock source
and slope, data source, and frame type and source.
2Press the
Clock softkey or turn the Entry knob to select the channel
connected to the SPI serial clock line. The
CLK label for the source
channel is automatically set.
As you press the Clock softkey (or rotate the Entry knob on mixed-signal
oscilloscopes), the CLK label for the source channel is automatically set and the
channel you select is shown in the upper-right corner of the display next to
"SPI".
Adjust the trigger level for the selected analog channel by turning the Trigger
Level knob. Select Threshold in the D7 Thru D0 or D15 Thru D8 menu to set the
level for digital channels. The value of the trigger level or digital threshold is
displayed in the upper-right corner of the display.
Clock
channel
Clock
slope
Data
channel
Frame
channel
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condition
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