Anritsu 37 C Series, Operation Manual, Page: 108 / 603

Graph Data Types The data types (real, imaginary, magnitude, phase) used in the dis-
played graph-types reflect the possible ways in which S-Parameter
data can be represented in polar, Smith, or rectilinear graphs. For ex-
ample: Complex data—that is, data in which both phase and magni-
tude are graphed—may be represented and displayed in any of the
ways described below:
q
Complex Impedance; displayed on a Smith chart graph.
q
Real and imaginary; displayed on a real and imaginary graph.
q
Phase and magnitude components; displayed on a rectilinear
(Cartesian) or polar graph.
q
In addition to the above, the 37XXXC can display the data as a
group delay plot. In this graph-type, the group-delay measure-
ment units are time. Those of the associated aperture are fre-
quency and SWR.
The quantity group delay is displayed using a modified rectilin-
ear-magnitude format. In this format the vertical scale is in linear
units of time (ps-ns-
m
s). With one exception, the reference value and
reference line functions operate the same as they do with a normal
magnitude display. The exception is that they appear in units of time
instead of magnitude.
Examples of graph-data types are shown in Figure 6-6 through 6-11,
on the following pages.
37XXXC OM 6-7
DATA DISPLAYS DISPLAY MODES AND TYPES