R3765/67G Series Network Analyzer Operation Manual
7.5 Calibration
7-59
Note:
A number in an error term indicates a port number.
Ed1 shows the directivity of TEST PORT1, and Et21 shows the transmission tracking
from TEST PORT1 to TEST PORT2.
The 4-port full calibration makes a complete error correction for the 4-port network. As
a result, all errors, which refer to all combinations of two ports, are always corrected for,
even if the error between PORT1 and PORT2 is measured.
A total of 16 S parameters of a 4-port device is obtained using the following 6 paths:
TEST PORT 1 to TEST PORT 2, TEST PORT 1 to TEST PORT 3, TEST PORT 1 to
TEST PORT 4, TEST PORT 2 to TEST PORT 3, TEST PORT 2 to TEST PORT 4, and
TEST PORT 3 to TEST PORT 4.
Signal source
PORT1
Directivity
Ed1, Ed2, Ed3, Ed4
Source matching
Es1, Es2, Es3, Es4
Load matching
El1, El2, El3, El4
Transmission tracking
Et21, Et31, Et41, Et12, Et32, Et42, Et13, Et23,
Et43, Et14, Et24, Et34
Reflection tracking
Er1, Er2, Er3
Isolation
Ex21, Ex31, Ex41, Ex12, Ex32, Ex42, Ex13,
Ex23, Ex43, Ex14, Ex24, Ex34