User`s guide

4 Triggering
150 InfiniiVision Oscilloscopes User’s Guide
SPI Trigger
Serial Peripheral Interface (SPI) trigger setup consists of connecting the oscilloscope to a
clock, data, and framing signal. You can then trigger on a data pattern that occurs at the
start of a frame. The serial data string can be specified to be from 4 to 32 bits long.
When you press the Settings softkey, a graphic will be displayed showing the current
state of the frame signal, clock slope, number of data bits, and data bit values. Press the
Signals softkey in the Settings Menu to see the current source channels for the clock,
data, and frame signals.
1 Press [Save/Recall]&Default Setup.
2 Press the [Label] key to switch labels on.
3 Turn on any analog or digital channels that you will be using for the SPI signals.
4 Press the [More] key in the Trigger section of the front panel, rotate the Entry knob
until SPI is displayed in the Trigger softkey, then press the Settings softkey to display
the SPI Trigger Menu.