Concepts and features
R&S
®
ZNB/ZNBT
193
User Manual 1173.9163.02 ─ 62
Example:
The following examples show minimal port assignments for a Full 9-Port calibration
using a four-port calibration unit:
Table 4-11: Full 9-port calibrations: star-shaped optimum solution
Test Port
Assignment 1
Assignment 2
Assignment 3
1
Cal Unit Port 1
Cal Unit Port 1
Cal Unit Port 1
2
Cal Unit Port 2
-
-
3
Cal Unit Port 3
-
-
4
Cal Unit Port 4
-
-
5
-
Cal Unit Port 2
-
6
-
Cal Unit Port 3
-
7
-
Cal Unit Port 4
-
8
-
-
Cal Unit Port 2
9
-
-
Cal Unit Port 3
Table 4-12: Full 9-port calibrations: line-shaped optimum solution
Test Port
Assignment 1
Assignment 2
Assignment 3
1
Cal Unit Port 1
-
-
2
Cal Unit Port 2
-
-
3
Cal Unit Port 3
-
-
4
Cal Unit Port 4
Cal Unit Port 4
-
5
-
Cal Unit Port 1
-
6
-
Cal Unit Port 2
-
7
-
Cal Unit Port 3
Cal Unit Port 3
8
-
-
Cal Unit Port 1
9
-
-
Cal Unit Port 2
4.5.6
Scalar power calibration
The purpose of a scalar power calibration is to ensure accurate source power levels
and power readings at a particular position (calibration plane) in the test setup. Scalar
power calibration is different from the system error correction described in
A power calibration is required for accurate measurement of wave quantities or ratios
(see section
on page 98). For best accuracy, choose a cali-
bration method according to the table below.
Calibration
