Agilent Technologies InfiniiVision 5000 Series User Manual page 153

Labels
automatically
set for clock,
data, and chip
select signals
Graphic showing
current state of SPI
trigger clock slope and
chip select polarity or
timeout selection
InfiniiVision Oscilloscopes User's Guide
8 Press the Data softkey or turn the Entry knob to select the channel that is connected
to the SPI serial data line. (If the channel you selected is off, switch it on.)
As you press the Data softkey (or rotate the Entry knob), the DATA 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".
If you have connected one of the oscilloscope's analog source channels to the Data
signal: Adjust the trigger level for the selected analog channel to the middle of the
waveform by turning the Trigger Level knob.
If you have connected one of the oscilloscope's digital source channels to the Data
signal (this applies to MSO model oscilloscopes only): Press the [D15-D0] key and
select Thresholds to set an appropriate threshold level for digital channels.
9 Press the Frame by softkey to select a framing signal that the oscilloscope will use for
determining which clock edge is the first clock edge in the serial stream.
You can set the oscilloscope to trigger during a high chip select (CS), a low chip select
(~CS), or after a Timeout period during which the clock signal has been idle.
4
Triggering
153