Tektronix RSA6100A Series, Руководство пользователя

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Analog Modulation > PM PM Display
Item Element Description
1
Check mark indicator The check mark indicator in the upper, left-hand corner of the display shows
when the PM display is the optimized display.
2 Top of Graph control 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. Vertical Scale can
also be controlled from the Settings control panel’s Scale tab.
3 Position Speci fi es 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.
4 Bottom of Graph Readout Displays the phase value at the bottom of the graph.
5 Measurement readouts Displays numeric values for the +Pk (positive phase deviation), –Pk (negative
phase deviation), Pk-Pk (peak-to-peak phase deviation), and RMS (RMS
value of the phase deviation).
6 Position
Speci fi es the horizontal position of the trace on the graph display.
7
Scale 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.
8 Clear Clears the measurement results.
9 Trace Detection readout Displays the Trace Detection setting (see Settings > Trace > Detection).
10 Freq Error 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 speci
fi ed 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.
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Changing the PM Settings (see page 126)
RSA6100A Series Real-Time Spectrum Analyzers Help
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