Agilent Technologies E7405A User Manual
10
Chapter 1
Making Basic Measurements
Comparing Signals
Comparing Signals
Using the analyzer, you can easily compare frequency and amplitude
differences between signals, such as radio or television signal spectra.
The analyzer delta marker function lets you compare two signals when
both appear on the screen at one time or when only one appears on the
screen.
differences between signals, such as radio or television signal spectra.
The analyzer delta marker function lets you compare two signals when
both appear on the screen at one time or when only one appears on the
screen.
Signal Comparison Example 1:
Measure the differences between two signals on the same display
screen.
screen.
1.
Perform a factory preset by pressing
Preset
,
Factory Preset
(if
present).
2.
Connect the 10 MHz REF OUT from the rear panel to the
front-panel INPUT.
front-panel INPUT.
3.
Set the center frequency to 30 MHz by pressing
FREQUENCY
,
Center Freq
, 30,
MHz
.
4.
Set the span to 50 MHz by pressing
SPAN,
Span
, 50,
MHz
.
5.
Set the resolution bandwidth to spectrum analyzer coupling by
pressing
pressing
BW/Avg
,
Res BW
(SA).
6.
Set the Y-Axis Units to dBm by pressing
AMPLITUDE
,
More,
Y-Axis Units,
dBm
.
7.
Set the reference level to 10 dBm by pressing
AMPLITUDE
,
Ref Level
,
10,
dBm
.
The 10 MHz reference signal appears on the display.
8.
Press
Peak Search
to place a marker at the highest peak on the
display. (The
Next Pk Right
and
Next Pk Left
softkeys are available to
move the marker from peak to peak.) The marker should be on the
10 MHz reference signal. See
10 MHz reference signal. See
.