Chapter 11 11-11
Error Terms
Error Correction
Transmission Tracking (E
TF
and E
TR
)
Description Transmission tracking is the difference between the frequency response of
the reference path (including R input) and the transmission test path (including A or B
input) while measuring transmission. The response of the test port cables is included.
These terms are characterized by measuring the transmission (S21, S12) of the “through”
configuration during the error-correction procedure.
Significant System Components
• R signal path (if both E
TF
and E
TR
are bad)
• A or B input paths
• “through” cable
Affected Measurements All transmission measurements are affected by transmission
tracking errors.
Figure 11-6 Typical E
TF
/E
TR
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