Agilent Technologies 4000 X Manuel de service télécharger pdf (Page 130)

130 4000 X-Series Oscilloscopes Advanced Training Guide

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

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

selectively capture 500 consecutive occurrences of our trigger condition

(Frame ID = 1). This would be extremely useful if you wished to capture

an entire set of 64 cycles of a particular Frame ID, or perhaps a set of

640 consecutive frames, for troubleshooting and analysis. To complete the

rest of this lab your scope must be licensed with the Segmented Memory

option.

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

back to center-screen.

28 Set the scope's timebase to 1.30 µs/div. Do this by tapping the timebase

value on the top of the screen, and tapping it again in the pop up

window. You can use the keypad to enter a custom timebase. Set the

scope's offset to ~- 1.2 µs to center the frame on the screen. This is

done by adjusting Main Delay in the same timebase pop up menu.

29 Tap the Search key to disable the search feature (button light will turn

off).

30 Tap the double- up arrows to the top right of the lister to close the

lister menu,

31 Press the [Acquire] front panel key.

Figure 87 Using the lister in conjuction with the search feature to find specific Frame IDs.

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Agilent Technologies 4000 X Manuel de service Page 130