Anritsu 37xxxE GROUP DELAY MEASUREMENTS

Let us take a look at a group delay measurement made on the Anritsu
37347E Vector Network Analyzer. Group delay, as a measurement op-
tion, can be found in the Graph Type menu. After selecting the option,
the VNA displays the data in a time-vs-frequency graph, or to be more
exact, a group-delay-vs-frequency graph (Figure 8-17).
The 37xxxE automatically selects the frequency spacing between data
points—that is, the aperture. Notice that this value is displayed on the
screen with the measurement (Figure 8-18).
GROUP DELAY MEASUREMENTS
8-22 37xxxE OM
S 2 1 F O R W A R D T R A N S M I S S I O N
G R O U P D E L A Y
R E F = 1 . 0 0 0 n S 6 0 0 . 0 0 0 p S / D I V
9 . 0 0 0 0
3 . 0 0 0 0 G H z
Figure 8-17. Group Delay-vs-Frequency Graph
S 2 1 F O R W A R D T R A N S M I S S I O N
G R O U P D E L A Y R E F = 1 . 0 0 0 n S 6 0 0 . 0 0 0 p S / D I V
9 . 0 0 0 0
3 . 0 0 0 0 G H z
Figure 8-18. Group Delay Screen Showing Aperture