Error Terms
Performing Measurement Calibration
Performing Measurement Calibration
A calibration must be performed to allow the analyzer to calculate the error terms before
they can be used as a tool:
CAUTION
Perform the following procedure only at a static-safe workstation, and wear a
grounded wrist strap.
This is important. If not properly protected against, electrostatic discharge
can seriously damage your analyzer, resulting in costly repair.
To reduce the chance of electrostatic discharge, follow all of the
recommendations outlined in
1-5, when performing the following calibration.
1. Connect a type-N cable to Port 2.
2. Perform a full 2-port calibration,
analyzer if necessary.
Using Flowgraphs to Identify Error Terms
Flowgraphs are a graphical representation of signal flow through the measurement path.
The flowgraphs in
Figure A-1
measurement calibration.
Figure A-1 Flowgraph of One-Port Error Terms for Port 1
where:
E = Error term
Subscript:
D = Directivity
S = Source Match
R = Reflection Tracking
The error terms are the same for a one port measurement on Port 2 (S
A-4
"Electrostatic Discharge Protection" on page
FULL SOLT 2-Port
and
Figure A-2
illustrate the error terms associated with
PNA Series Microwave Network Analyzers
E8362B, E8363B, E8364B
. Refer to embedded help in the
).
22
Service Guide E8364-90026