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SPI Trigger and Serial Decode
Please read “Setup for SPI Signals”, “SPI Trigger” and “SPI Serial 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 the correct channels of the oscilloscope and
specifying the parameters of each input signal.
Note: You need to set the CS Type to CLK Timeout due to channel limitations.
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 38 shows.
Figure 40 SPI SIGNAL 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.
Figure 41 CLK Menu
6. Set MISO:
a. Press the MISO softkey to enter the MISO menu.
b. Press the MISO softkey to select the channel that is connected to the SPI
MISO signal.
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