Agilent Technologies 4000 X Manual de servicio descargar pdf (Pagina 111)

Serial Bus Decoding & Triggering, Search & Navigation, and Segmented Acquisition Labs 4

4000 X-Series Oscilloscopes Advanced Training Guide 111

You should now see on your scope’s display what appears to be an

un- triggered display of a digital burst signal similar to Figure 73. Your

scope is actually triggering on random rising edges of channel- 1, which is

the scope’s default trigger condition. But this signal is too complex to

establish a unique trigger point using simple edge triggering. This signal is

a packet/frame of LIN serial bus traffic. Let’s first set up the scope to

intelligently decode this serial data stream based on the LIN protocol, and

then we will establish a more unique trigger point using LIN triggering.

9 Press the [Serial] front key.

10 Tap the Mode I

C softkey; then select the LIN serial decode mode.

11 Tap the Signals softkey and then the Baud Rate softkey and verify that

the Baud Rate is set to 19.2 kb/s.

Figure 73 Capturing a LIN frame using the scope’s Edge triggering mode.

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Agilent Technologies 4000 X Manual de servicio Pagina 111