Agilent Technologies 3000 X-Series Manual de Serviço descarregar pdf (Página 77)

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

3000 X-Series Oscilloscopes Advanced Training Guide 77

Let’s now use the scope’s Segmented Memory mode of acquisition to

selectively capture 500 consecutive occurrences of our trigger condition

(Read from address 29

HEX

). But to complete the rest of this lab your scope

must be licensed with the Segmented Memory option.

31 Push the horizontal position/delay knob to re- position the trigger point

back to center-screen.

32 Set the scope’s timebase to 100.0 µs/div.

33 Press the [Run/Stop] front panel key to begin repetitive acquisitions

again.

34 Press the [Acquire] front panel key.

35 Press the Segmented softkey; then turn the Entry knob to select 500 as

the number of segments to capture.

36 Press the Segmented softkey to begin a Segmented Memory acquisition.

37 Press the Current Segment softkey; then turn the Entry knob to review all

500 captured segments.

38 Set the Current Segment to 500 and note the time-tag of the last captured

segment.

Segmented Memory optimizes oscilloscope acquisition memory by only

capturing important segments of a waveform based on the trigger

condition and timebase setting. In this example, we have selectively

Figure 54 Using the scope’s Segmented Memory acquisition to selectively capture more

C traffic.

1 2 ... 72 73 74 75 76 77 78 79 80 81 82 ... 127 128

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Agilent Technologies 3000 X-Series Manual de Serviço Página 77