SDS1000X-E User Manual
90
SPI Trigger and Serial Decode
Please in order of “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 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 the Protocol softkey and then select SPI by turning Universal Knob.
4. Press the Signal softkey to enter the SIGNAL menu as Figure 35 shows.
Figure 42 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 the softkey to return previous menu.
Figure 43 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.
c. Press the Threshold softkey to set the SPI MISO 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.
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