Measurement Modes And Displays - HP 3563A Operating Manual

Measurement Overview
Measurement Modes: A Comparison

Measurement Modes and Displays

Notice from f igure 2-3 that you may display your measurement data as instantaneous data,
filtered-input data, or as a measurement display. Instantaneous displays allow you to see the input
signal before it is filtered or measured (see "Instantaneous Displays" later in this section).
Filtered-input displays allow you to see the input signal after it has been [iltered to the current
frequency span (see "Filtered-Input Displays" later in this section). Measurement displays allow you
to see the input signal after it has gone through the entire measurement process - which includes
performing the calculation necessary to obtain the desired display.
Instantaneous displays are selected with the
displays are selected with the
filtered-input, and measurement displays - are simply ways of looking at the data. Once data is
collected, you may switch from one display type to another without destroying or changing the data.
l!
is important to note that all display types are not available for all measurements. Table 2-1 shows
you when you can use each type of display.
Since measurement displays are derived from calculations on the collected data, a number of
different measurement displays are possible from one measurement. For example, suppose that you
just completed a frequency-response measurement. The HP 3563A can perform calculations on the
collected data to obtain a number of different measurement displays, such as frequency response,
coherence, or power spectrum.
2-8
VIEW INPUT
MEAS DISP
hardkey. All three display types - instantaneous,
hardkey; filtered-input and measurement