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3. Click [Measurement] to start the port extension calculation. The calculated delay time and loss value will be automatically
displayed in the toolbar.
Fig. 6.8 Automatic Port Extension
[Open circuit] and [Short circuit]: connect the open-circuit device or short-circuit device to the port requiring automatic extension.
[Display configuration] and [Hide configuration]: display and hide the configuration of automatic port extension.
Measurement port number: select the port to be subject to automatic extension calculation.
Method: set the frequency range of the data collected for automatic port extension calculation.
[Default range
]: the same as the frequency range of current measurement.
[Activate marker]:
use the data between the activated marker and the part of the highest frequency to calculate the automatic
port extension.
[User-defined]:
the user enters the frequency range of calculation.
[Include loss]: select it to automatically calculate the loss arising from the current port extension.
[Compensation mismatch]: select it to automatically compensate the error arising from mismatch.
[Prompt of calibration kit connection]: if this item is selected, the [Calculation kit connection] prompt box will pop up.
[Close]: apply the current calculation results to the active channel and exit the dialog box.
6.5.3.
phase offset
The phase offset is a kind of mathematical phase measurement, and the deviation range is 0-360°. Use this characteristic in the
following methods:
Improve the display of phase measurement results.
This is similar to the improvement of reference level in amplitude measurement. Change the phase response to make it at the screen
center or on the same straight line as the screen.
Simulate the phase offset determined in measurement.
For example, if it is known to add a cable and the cable length may result in phase offset of measurement results, the phase offset can
be increased by movement and the measurement of the whole device can be simulated.
1) Setting of phase offset
Menu path: [Response] > [Scale] > [phase offset...]. The [phase offset] dialog box will appear.
Set the phase offset in the [phase offset] box.
