Ofdm Channel Response Settings - Tektronix SPECMON3 Manual

OFDM Analysis
Elements of the Display
Item Display element
1 Top-of-graph (magnitude)
2 dB/div (magnitude)
3 Display selector
4 Bottom-of-graph readout
(magnitude)
5 Autoscale
6 Pos
7 Scale
8 Top-of-graph (phase)
9 Position (phase)
10 Bottom-of-graph (phase)
xxx

OFDM Channel Response Settings

The OFDM Channel Response Settings control panel provides access to settings that control parameters of
the Channel Response Display.
Settings tab
Modulation Params (see
page 244)
Advanced Params (see
page 245)
Data Range Tab (see
page 246)
Analysis Time Tab (see
page 246)
Prefs Tab (see page 250)
xxx
SPECMON3 & SPECMON6 Printable Help
Description
Sets the level that appears at the top of the magnitude graph. This is only a
visual control for panning the graph. The Reference Level is adjusted in the
Toolbar and the Ampl control panel. By default, Vert Position = Ref Level.
Sets the vertical scale value. The maximum value is 20.00 dB/division.
Selects the display type. Channel Response Magnitude or Phase can be
displayed as a Magnitude or Phase graph.
Indicates the amplitude at the bottom of the graph. This value changes with
the dB/div and Vertical Position settings.
Adjusts the Vertical and Horizontal scaling to display the optimize the trace
display on screen.
Shifts the trace left or right in the graph. The readout indicates the subcarrier
or frequency shown at the left edge of the display.
Specifies the number of subcarriers shown in the graph.
Sets the phase value indicated at the top of the graph. Since the Position
value at the vertical center of this graph remains constant as the Top of Graph
value is adjusted, the Vertical Scale increases as the Top of Graph value
increases, which also affects the bottom of graph readout.
Specifies the phase shown at the center of the graph display. Changing this
value moves the trace up and down in the graph, which affects the Top of
Graph and Bottom of Graph values as well.
Indicates the phase at the bottom of the graph. This value changes with the
Position setting.
Description
Specifies the input signal standard and additional user-settable signal parameters.
Specifies parameters used by the instrument to analyze the input signal.
Specifies which symbols and subcarriers of the signal to display.
Specifies parameters that define the portion of the acquisition record that is used for
analysis. Also allows you to specify the time units (Symbols or Seconds) for OFDM
Analysis displays.
Specifies the units of the display and whether elements of the graphs are displayed.
OFDM Channel Response Settings
229