Measurements and result displays
R&S®VSE-K6
15User Manual 1176.8922.02 ─ 12
3 Measurements and result displays
During a pulse measurement, I/Q data from the input signal is captured for a specified
time or for a specified record length. Pulses are detected from the signal according to
specified thresholds and user-defined criteria. The measured signal is then compared
with the ideal signal described by the user and any deviations are recorded. The
defined range of measured data is then evaluated to determine characteristic pulse
parameters. These parameters can either be displayed as traces, in a table, or be eval-
uated statistically over a series of measurements.
Measurement range vs. result range vs. detection range
The measurement range defines which part of an individual pulse is measured (for
example for frequency deviation), whereas the result range determines which data is
displayed on the screen in the form of amplitude, frequency or phase vs. time traces.
The detection range (if enabled) determines which part of the capture buffer is ana-
lyzed. The pulse numbers in the result displays are always relative to the current
detection range, that is: pulse number 1 is the first pulse within the detection range in
the capture buffer. If disabled (default), the entire capture buffer is used as the detec-
tion range. See also "Detection range" on page 50.
Result display windows
For each measurement, a separate measurement channel is activated. Each measure-
ment channel can provide multiple result displays, which are displayed in individual
windows. The measurement windows can be rearranged and configured in the
R&S VSE to meet your requirements. All windows that belong to the same measure-
ment (including the channel bar) are indicated by a colored line at the top of the win-
dow title bar.
►To add further result displays for the Pulse channel, select the "Add Window"
icon from the toolbar, or select the "Window > New Window" menu item.
For details on working with channels and windows see the "Operating Basics"
chapter in the R&S VSE Base Software User Manual.
●Pulse parameters....................................................................................................15
●Evaluation methods for pulse measurements.........................................................29
3.1 Pulse parameters
The pulse parameters to be measured are based primarily on the IEEE 181 Standard
181-2003. For detailed descriptions refer to the standard documentation ("IEEE Stan-
dard on Transitions, Pulses, and Related Waveforms", from the IEEE Instrumentation
and Measurement (I&M) Society, 7 July 2003).
The following graphic illustrates the main pulse parameters and characteristic values.
(For a definition of the values used to determine the measured pulse parameters see
Chapter 4.1, "Parameter definitions", on page 45.)
Pulse parameters