Agilent Technologies 8719D, Руководство пользователя

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3.
4.
5.
Substitute a thru for the device and perform a response calibration and press:
Reconnect your test device.
better view the measurement trace, press:
Notice that in Figure 2-34 the SAW under test has considerable phase shift within only
a 2 MHz span. Other filters may require a wider frequency span to see the effects of phase
shift.
The linearly changing phase is due to the device’s electrical length.
You
can measure this
changing phase by adding electrical length (electrical delay) to compensate for it.
6. To place a marker at the center of the band, press:
and turn the front panel knob or enter a value from the front panel keypad.
7. activate the electrical delay function, press:
. .
This function calculates and adds in the appropriate electrical delay by taking a span
about the marker, measuring the and computing the delay as
238 Measurements