Fm Settings - Tektronix SPECMON3 Manual

Analog Modulation
Item Element
1 Check mark indicator
2 Top of Graph control
3 Position
4 Bottom of Graph Readout
5
Measurement readouts
6 Position
7
Scale
8 Clear
9 Trace Detection readout
10 Freq Error
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Changing the FM Settings (see page 134)

FM Settings

Menu Bar: Setup > Settings
Application Toolbar:
The FM Settings control panel provides access to settings that control parameters of the FM Display.
134
Description
The check mark indicator in the upper, left-hand corner of the display shows
when the FM display is the optimized display.
Sets the frequency 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. Vertical Scale can also be
controlled from the Settings control panel's Scale tab.
Specifies the frequency 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.
Displays the frequency value at the bottom of the graph.
Displays numeric values for the +Pk (positive frequency deviation), –Pk
(negative frequency deviation), RMS (RMS value of the deviation), Pk-Pk
(peak-to-peak frequency deviation), and Pk-Pk/2 (peak-to-peak frequency
deviation divided by two).
Specifies the horizontal position of the trace on the graph display.
Adjusts the time range of the graph. By decreasing the scale (full-scale time
over 10 divisions), the graph essentially becomes a window that you can
move over the acquisition record by adjusting the horizontal position.
Clears the trace and numeric measurement results.
Displays the Settings > Trace > Detection setting.
This readout can show Freq Error or Freq Offset. When it displays Freq
Error, it shows the difference between the instrument Frequency setting and
the measured value of the signal's carrier frequency. When it displays Freq
Offset, it shows the frequency offset specified on the Settings > Parameters
tab. If Freq Error is displayed, it also indicates that the Carrier frequency
detection setting is Auto. If Freq Offset is displayed, it indicates that the
Carrier frequency detection setting is manual.
SPECMON3 & SPECMON6 Printable Help
FM Settings