The Module contains several different transmission and reflection impedance states, as well as electronic changeover switches, two or four RF connectors, and a USB connector. RF connectors are intended for connecting to VNA test ports, and a USB connector is intended for controlling.
Module |
States |
|---|---|
ACM2506, ACM2509, ACM2708, ACM4000T, ACM6000T |
6 reflection states (three for each port), a THRU, and an attenuator. |
ACM2520 |
8 reflection states (four for each port), a THRU, and an attenuator. |
ACM2543, ACM8000T |
10 reflection states (five for each port), a THRU, and an attenuator. |
ACM4509, ACM8400T |
16 reflection states (four for each port), a THRU, and an attenuator. |
ACM4520 |
12 reflection states (three for each port), a THRU, and an attenuator. |
Calibration is performed by automatically connecting internal transmission and reflection impedance states to the VNA test ports.
Calibration allows determining systematic errors according to the VNA model. The data obtained after calibration is used to correct S-parameter measurement results to increase measurement accuracy.
Block diagrams of Modules are represented in Module Block Diagrams.
