Agilent Technologies 4000 X Manuel de service télécharger pdf (Page 39)

Oscilloscope Familiarization Labs 2

4000 X-Series Oscilloscopes Advanced Training Guide 39

Because the InfiniiVision oscilloscope’s mask testing capability is

hardware-based, it can test over 200,000 waveforms/sec and provide

detailed pass/fail statistics including failure rate in terms of both percent

and a Sigma quality factor as shown in Figure 20. A Sigma quality factor

of 6

σ relates to approximately three or fewer defects per million tested.

Because this particular glitch occurs 1/1,000,000, we have a Sigma quality

factor that exceeds 6

σ. Let’s now set up the oscilloscope to stop on the

first detected failure.

13 Press [Run/Stop] to stop acquisitions.

14 Press the (Back) key.

15 Press Statistics.

16 Press Reset Statistics to clear the statistics from the previous test.

17 Press the (Back) key.

18 Press Setup.

19 Press On Error – Stop two times.

20 Press [Run/Stop] to begin a new “Stop-on-Error” test.

Figure 20 Mask Testing provides us within detailed statistics about the rate of occurrence

of the infrequent glitch.

Back

1 2 ... 34 35 36 37 38 39 40 41 42 43 44 ... 167 168

Pas de commentaire

Agilent Technologies 4000 X Manuel de service Page 39