Source Match (ESF and ESR)
Description
Source match is a measure of test port connector match, as well as the match
between all components from the source to the test port. These are the forward
and reverse uncorrected source match terms of the driven port.
Signifkant
System Components
w
load calibration kit device
w
open calibration kit device
n
short calibration kit device
n
bridge
n
test port connectors
n
bias tees
w
step attenuator
n
transfer switch
n
test port cables
Affected
Measurements
Reflection and transmission measurements of highly reflective devices are most
affected by source match errors.
sg633s
Figure 11-3. Typical
ESF/ESB
without and with Cables
11-12
ErrorTerms