Scientific SMO1000E, Руководство пользователя

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SPI Triggering and Serial Decode
Please in order of “ Setup for SPI Signals ”, “ SPI Triggering ” and “ SPI Decode ” to
trigger and decode the signals.
Setup for SPI Signals
Setting the SPI (Serial Peripheral Interface) signal includes two steps: connecting the
CLK, MISO, MOSI and CS signals to oscilloscope; specifying the parameters of each
input signal.
1. Press the Decode key to enter the DECODE function menu.
2. Press the Decode softkey and select the desired slot (Decode1 or Decode2).
3. Press Protocol softkey and then select SPI by turning Universal Knob.
4. Press Signal softkey to enter the SIGNAL menu as Figure 35 shows.
Figure 36 SINGAL Menu
5. Set CLK (clock signal):
a. Press the
CLK softkey to enter CLK menu.
b. Press the
CLK softkey to select the channel that is connected to the SPI clock
signal.
c. Press the Threshold softkey to set the SPI clock signal’s threshold voltage level
by Universal Knob. The threshold voltage level is for decoding, and it will be
regard as the trigger voltage level when set the trigger type to serial.
d. Press the Edge Select softkey to set the oscilloscope will samples at clock
signal’s rising edge or falling edge.
e. Press
softkey to return previous menu.