R&S FSH
Network Analyzer Mode
Calibrating Measurements
Operating Manual 1309.6275.12 - 14
126
Vector measurements
Vector measurements provide several calibration methods that correct the magnitude
and the phase.
C
Full 2-Port
Both test ports are calibrated for both reflection and transmission measurements
on either port or direction. The calibration routine therefore requires the connection
of the standards load, open and short to both test ports, and a through connection
of the test ports. The influences of the test setup and of the isolation between the
test ports are thereby determined and taken into account in the subsequent
measurement of the device under test.
While this method is the most time-consuming during calibration, it does provide
the greatest accuracy for all measurements at both test ports without recalibration
and is thus the most flexible.
C
Full 2-Port High Accuracy
Both test ports are calibrated like the full 2-port calibration. In addition, the load
match is taken into account more accurately and correction data is applied in both
directions, forward and reverse.
This method provides even more accurate results than the normal full 2-port
calibration but takes a while longer to finish.
C
Reflection Port 1/2
Test port 1 or 2 is calibrated for reflection measurements on that port (S11 or S22).
The calibration routine requires the calibration standards open, short and load to
be connected one after another.
C
Transmission Fwd (Port 1 2) and Transmission Rev (Port 2 1)
Test port 1 or 2 is calibrated for transmission measurements (S12 or S21). For
measurements in forward direction, this method calibrates port 1, in case of
measurements in the reverse direction, it calibrates port 2.
The calibration requires a through connection and the calibration standards open
and short.
C
Normalize…
Normalization is a simple way to calibrate the measurement using one calibration
standard only. The correction data is deducted from this measurement. As only
one calibration standard is used, the isolation between the test ports is ignored. A
possible cross-talk between the test ports is therefore not eliminated and the
accuracy is lower than that of a full calibration.
