BK Precision 2560B Series, Руководство пользователя

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Serial Trigger and Decode
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10.2 SPI Trigger and Serial Decode
10.2.1 Setup for SPI Signals
Setting the SPI (Serial Peripheral Interface) signal includes two steps: Connecting the CLK, MISO, MISO and CS signal
to oscilloscope, specifying the parameters of each input signal.
1. Touch Decode key to enter the Decode menu.
2. Touch Decode and select the desired slot ( Decode1 or Decode2 ).
3. Touch Protocol to display the available SPI Signals.
4. Set CLK (clock signal):
• Touch CLK to enter CLK menu.
• Touch CLK to select the channel that is connected to the SPI clock signal.
• Touch Threshold 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.
• Touch Edge Select to set the oscilloscope will samples at clock s ignal’s rising edge or falling edge.
• Touch to return previous menu.
5. Set MISO:
• Touch MISO to enter the MISO menu.
• Touch MISO to select the channel that is connected to the SPI MISO signal.
• Touch Threshold softkey, then use the Universal Knob to set the SPI MISO signal’s threshold voltage level.
– The threshold voltage level is for decoding, and it will be regard as the trigger voltage level when set the
trigger type to serial.
• Touch to return to the previous menu.
6. Set MOSI:
• Press the MOSI to enter the MOSI menu.
• Touch MOSI to select the channel that is connected to the SPI MOSI signal.
• Press the Threshold softkey, then use the Universal Knob to set the SPI MOSI signal’s threshold voltage level.
– The threshold voltage level is for decoding, and it will be regarded as the trigger voltage level when the trigger
type is set serial.
• Touch to return to the previous menu.
7. Set CS:
• Touch CS to enter the MOSI menu.
• Touch CS Type to select the chip select type.
• Modify the CD value.
• Touch to return to the previous menu.