Agilent Technologies 54621A, 54621D Assign source channels to the clock, data, and frame signals

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.

Clock	Clock	Data	Frame by	Frame	Return to
channel	slope	channel	condition	channel	previous menu

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.

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