Agilent Technologies InfiniiVision 5000 Series Guida Utente Pagina 323

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Serial Decode/Lister 10
InfiniiVision Oscilloscopes User’s Guide 323
4 If the decode line does not appear on the display, press the Decode softkey to turn it
on.
5 If the oscilloscope is stopped, press the [Run/Stop] key to acquire and decode data.
You can use the Zoom horizontal sweep mode for easier navigation of the acquired data.
Interpreting SPI Decode
Angled waveforms show an active bus (inside a packet/frame).
Mid-level blue lines show an idle bus.
The number of clocks in a frame appears in light-blue above the frame, to the right.
Decoded hexadecimal data values appear in white.
NOTE
If the setup does not produce a stable trigger, the SPI signal may be slow enough that the
oscilloscope is AutoTriggering. Press the [Mode/Coupling] key, then press the Mode
softkey to set the trigger mode from Auto to Normal.
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