Absolute measurements are measurements of the absolute power of a signal at a receiver input. Unlike relative measurements of S-parameters, which represent a relation between the signals at inputs of two receivers, absolute measurements determine the signal power at the input of one receiver. The TR series two-port analyzer has three independent receivers: A, B, R (See figure below).
The R is a reference signal receiver. The A and B are test signal receivers. The A and R receivers are located in Port 1. The B receiver is located in Port 2. There are three types of absolute measurements (See table below).
Symbols |
Definition |
|---|---|
A |
Test signal receiver A (Source Port 1) |
B |
Test signal receiver B (Source Port 1) |
R |
Reference signal receiver R (Source Port 1) |
A measured absolute parameter is set for each trace. The trace to which the function is applied must be preselected as active (See Selection of Active Trace/Channel ).
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To select absolute measurement, click softkeys: Response > Measurement Then select the required parameter: •Abs A •Abs B •Abs R |
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note |
In absolute measurement mode, dBm measurement units are used for logarithmic magnitude format, and W measurement units are used in linear magnitude format. Other formats are not applicable to absolute measurements. |
