Agilent Technologies Agilent 4396B Instrukcja Użytkownika Pobierz pdf (Strona 6)

Group Delay Characteristics

Accuracy

In general, the following formula can be used to determine the accuracy,

in seconds, of a specific group delay measurement:

23 ±5 °C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Depending on the aperture, input level, and device length, the phase

accuracy used in either incremental phase accuracy or worst case phase

accuracy.

Sweep Characteristics

Sweep type . . . . . . . . .Linear frequency, log frequency, power, list frequency

Trigger type . . . . . . . . . . . . . . . . .Hold, single, number of groups, continuous

Trigger source . . . . . . . . . . . . . . . . . .Free run, external, manual, GPIB (bus)

Event trigger . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .On point, On sweep

phaseAccuracy(deg)

Aperture(Hz) x 360 deg)

Group delay accuracy (sec)

Aperture (Hz)

@ 1.8 GHz

with 7 mm full 2-port calibration

Device electrical length 10 m

with insertion loss of less than 1 dB

Figure 3. Typical group delay accuracy

1 2 3 4 5 6 7 8 9 10 11 ... 27 28

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Agilent Technologies Agilent 4396B Instrukcja Użytkownika Strona 6