EFA-200/-300 6 Operating modes
6-15
3. Press the ENTER key to confirm your selection.
The name of the standard entered in the STANDARDS menu will
automatically appear in display field F1.
Note: Recording of measured values begins after the measurement
range is selected. If AVG RMS was chosen as the detection range,
averaging is also restarted.
6.3.3 Selecting the measurement mode (detection mode)
Annex C: Fundamentals of FFT: see page C-1
You can choose among three detection modes:
• ACT RMS: The RMS value of each spectral line can be measured. The
measurement result is not a function of the signal’s polarization.
• AVG RMS: The spectrum is averaged over a number NAVG of
successive spectra. This is a way of reducing noise, displaying lower
measured values and choosing an averaging time. The progress is
displayed using the validity indicator.
Setting the averaging parameter NAVG: see page 8-7
• VECT PEAK: The peak value of individual spectral lines can be
measured.
Depending on the signal’s polarization, this measured value lies
between ACT RMS and a value 3 dB higher.
✓ The device should be in the “RUN” state.
⇒ To switch between detection modes, press the F2 key.
The selected detection mode appears in display field F2.
Note: When you switch to the AVG RMS mode, averaging is restarted.
6.3.4 Selecting the display mode
Annex C: Fundamentals of FFT: see page C-1
You have a choice of two display modes:
• LIVE: The resulting spectrum is displayed.
• MAX: For each spectral line, the maximum value is determined and
displayed on the screen. For the functions “ZOOM” and “MARKER”, the
full resolution is available.
✓ The device should be in the “RUN” state.
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