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Single and balanced port measurements
Agilent N4373A Lightwave Component Analyzer, First Edition
Single port measurements are made on devices when the signal on the
electrical port is referenced to ground. This port is described by S-
parameters.
Balanced port measurements are only possible on the PNA. These are
made on devices when the signal on the electrical port is the difference
between two electrical signals, each of which is referenced to ground. A
balanced measurement needs two input or two output channels on the
network analzyer. The optical port of the device is a third port.
For valid balanced measurements, make sure the electrical calibration of
the network analyzer includes at least three ports.
For more details on balanced port measurements, please consult the PNA
user's guide.
Measurement Concepts
37
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