11-10 Chapter 11
Error Terms
Error Correction
Load Match (E
LF
and E
LR
)
Description Load match is a measure of the impedance match of the test port that
terminates the output of a 2-port device. Load match error terms are characterized by
measuring the reflection (S11, S22) responses of a “through” configuration during the
calibration procedure.
Significant System Components
• “through” cable
• cable connectors
• test port connectors
Affected Measurements All transmission and reflection measurements of a low
insertion loss two-port devices are most affected by load match errors. Transmission
measurements of lossy devices are also affected.
Figure 11-5 Typical E
LF
/E
LR
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