China Electronics Technology Instruments AV3672 Series, User Manual

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6 Measurement Optimization
6.5 Improvement of Phase Measurement Accuracy
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Fig. 6.8 Automatic Port Extension
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[Open circuit] and [Short circuit] : connect the open-circuit device or short-circuit device to the port
requiring automatic extension.
➢
[Show configuration] and [Hide configuration] : display and hide the configuration of automatic port
extension.
➢
Measure On 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.
[Current Span] : the same as the frequency range of current measurement.
[Active Marker] : use the data between the active marker and the part of the highest frequency to calculate the
automatic port extension.
[User Span] : the user enters the frequency range of calculation.
➢
[Include Loss] : select it to automatically calculate the loss arising from the current port extension.
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[Adjust for Mismatch] : select it to automatically compensate the error arising from mismatch.
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[Prompt for Each Standard] : if this item is selected, the [Calculation kit connection] prompt box will
pop up.
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[Close] : apply the current calculation results to the active channel and exit the dialog box.
6.5.3 Phase Deviation
The phase deviation is a kind of mathematical phase measurement, and the deviation range is 0-360°. Use this
characteristic in the following methods:
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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 deviation determined in measurement.
For example, if it is known to add a cable and the cable length may result in phase deviation of measurement results,
the phase deviation can be increased by movement and the measurement of the whole device can be simulated.
1) Setting of phase deviation
Menu path: [Response] > [Scale] > [Phase Offset...] . The [Phase Offset] dialog box will appear.
Set the phase deviation in the [Phase deviation] box.