84 Chapter 2
Front-Panel Key Reference
Det/Demod
set to Factory and Power On is set to Preset. When Peak
detection is selected, Peak appears in the upper-left
corner of the display.
Key Access:
Det/Demod, Detector Auto Man
Sample
Sample detection is used primarily to display noise or
noise-like signals. This detection should not be used to
make the most accurate amplitude measurement of non
noise-like signals. In sample mode, the instantaneous
signal value at the present display point is placed in
memory. When
Sample detection is selected, Samp
appears in the upper-left corner of the display.
Key Access:
Det/Demod, Detector Auto Man
Negative Peak
Negative peak detection functions the same as peak
detection, but selects the minimum video signal value.
This detection should not be used to make the most
accurate amplitude measurements of signals. When
Negative Peak is selected, NPk appears in the upper-left
corner of the screen.
Key Access:
Det/Demod, Detector Auto Man
Demod
Accesses the menu keys to select AM demodulation, FM demodulation or
demodulation
Off. It also accesses the Demod View On Off, Speaker On
Off,
and Demod Time menu keys described below.
Key Access:
Det/Demod
NOTE The FM menu key only appears when the FM demod option (Option
BAA) or Bluetooth™ FM Demodulation (Option 106) is installed. The
two options are available on Agilent ESA-E Series spectrum analyzers
only (E4401B, E4402B, E4404B, E4405B and E4407B).
NOTE Segmented sweep is not available with the demodulation functions in
this section.
Off Turns demodulation off.
Key Access:
Det/Demod, Demod
AM Activating AM demodulation turns off FM
demodulation (if it is on). For non-zero spans, a 10 kHz
resolution bandwidth is used during demodulation,
regardless of the screen annotation.
Key Access:
Det/Demod, Demod
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