Rohde & Schwarz FSH4, Руководство по эксплуатации

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R&S FSH Spectrum Analyzer Mode
Performing Spectrum Measurements
Operating Manual 1309.6275.12 - 14 45
M Press the SPAN key.
In the default configuration, "Auto Span" is active. The R&S FSH automatically sets
the optimal span for the channel power measurement.
M Press the "Manual Span" softkey.
The R&S FSH opens an input field to define the span manually.
M Enter the span you need.
The largest possible span for the channel power measurement is ten times the
channel bandwidth. At larger spans, the result of the channel power measurement
would be increasingly imprecise, because too few points of the trace would be in
the channel you are measuring.
M Press the "Auto Span" softkey.
The R&S FSH again calculates the span automatically.
2.1.1.5 Measuring the Maximum Channel Power
If signal levels fluctuate significantly, you can define the maximum channel power with
the Max Hold function.
M Press the MEAS key.
M Press the "Power Display" softkey.
M Select the "Max Hold" menu item.
The power display switches from "Power" to "Max Power".
If you want to deactivate the Max Hold function and return to the normal power display,
activate Clear/Write.
M To deactivate the Max Hold function, press the "Power Display" softkey.
M Select the "Clear/Write" menu item.
The power display returns to "Power" display.
2.1.1.6 Unit for Power Display
The R&S FSH can apply different units to the power output. The default unit is dBm.
M Press the MEAS key.
M Press the "Power Unit" softkey.
M Select the unit you want from the submenu.
The R&S FSH displays the power level in the selected unit.