7- 50
Operating Concepts
Measurement Calibration
Figure 7-37 Isolation E
XF
Thus there are two sets of error terms, forward and reverse, with each set consisting of six error terms, as
follows:
• Directivity, E
DF
(forward) and E
DR
(reverse)
•Isolation, E
XF
and E
XR
• Source Match, E
SF
and E
SR
•Load Match, E
LF
and E
LR
• Transmission Tracking, E
TF
and E
TR
• Reflection Tracking, E
RF
and E
RR
The analyzer's test set can measure both the forward and reverse characteristics of the test device without
you having to manually remove and physically reverse the device. A full two-port error model illustrated in
Figure 7-38. This illustration depicts how the analyzer effectively removes both the forward and reverse error
terms for transmission and reflection measurements.
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