Keysight 4000 X-Series, Руководство по продвинутой подготовке

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Serial Bus Decoding & Triggering, Search & Navigation, and Segmented Acquisition Labs
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4000 X-Series Oscilloscopes Advanced Training Guide 119
You should now see three digital waveforms captured by the scope’s digital
channels of acquisition similar to Figure 79 . These I
2
S training signals are being
generated by the scope’s built-in pattern generator and routed directly to the
scope’s digital acquisition system; bypassing the logic probe. Note that in a real
measurement application such as this, you would use the scope’s analog inputs
and/or logic probe to capture these signals from your system.
D9 is the audio serially encoded data signal (SDATA), D8 is the serial clock signal
(SCLK), and D7 is the Word Select signal (WS). Let’s now set up the scope to
decode these I
2
S signals.
12
Press the
[Serial]
front panel key.
13
Tap the Mode I 2 C softkey; then select I 2 S .
14
Tap the Signals softkey.
15
Tap the SCLK softkey; then select D8 as the clock source by double-tapping it in
the menu.
16
Tap the WS softkey; then select D7 .
17
Tap the SDATA softkey; then select D9 .
18
Press the (Back) front panel button to return to the previous menu.
Figure 79 Capturing I
2
S signals using the scope’s digital channels of acquisition (MSO).
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