Agilent Technologies E5864A Dokumentacja Pobierz pdf (Strona 21)

When the measurement delay (or pulse delay) is adjusted, it is crucial

to keep the data acquisition window within the pulses. Unlike previous

examples, the measurement errors may not be obvious due to a few ADC

samples outside of the pulses. Figure 14b shows the measurement errors

caused by improper measurement delay. It is recommended to have enough

timing margin when adjusting IF bandwidth and/or the delays. Approximately

300 ns or greater measurement delay is recommended to account for data

processing and pulse modulation delays as shown earlier in Figure 9. The

chosen IF bandwidth should leave a margin of more than a few internal clock

cycles (50 ns or more) within the pulses.

Figure 14b. Measurement errors caused by improper measurement delay

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Agilent Technologies E5864A Dokumentacja Strona 21