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4
Serial Bus Decoding & Triggering, Search & Navigation, and Segmented Acquisition Labs
Figure 38 Capturing 2-wire SPI signals.
You should now see two digital waveforms captured by the scope's digital
channels of acquisition similar to
Channel- 1 is the SPI clock signal (CLK) and Channel- 2 is the MOSI/MISO
data signal. Let's now set up the scope to decode these SPI signals.
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11
12
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14
15
16
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18
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Press the [Serial] front panel key.
2
Press the Mode I
C softkey; then select SPI using the Entry knob.
Press the Signals softkey.
Press the Clock softkey; then press Threshold and adjust to +1.20 V using
the Entry knob.
Press the
(Back) front panel button to return to the previous menu.
Back
Press the MOSI softkey; then press Threshold and adjust to +1.60 V using
the Entry knob.
Press the
(Back) front panel button to return to the previous menu.
Back
Press the CS softkey; then press the Timeout softkey; then enter 1.00 ms
using the Entry knob.
Press the [Label] front panel key to turn on the scope's default labels.
Figure
38.
2000 X-Series Oscilloscopes Advanced Training Guide
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