Rigol DSA1000 Series Guida per l'amministratore
RIGOL TECHNOLOGIES USA INC
877-4-RIGOL-1 How-To Guide
www.rigolna.com
DSA1000 Tutorial Intro
DSA1000 is Rigol’s line of spectrum analyzers. Throughout this
tutorial we will attempt to introduce some of the significant
capabilities of the DSA1000 family in addition to demonstrating the
ease of use of its interface.
Displaying the spectrum of a signal:
For this experiment, the following equipment will be needed:
-Function Generator
-Coaxial cable connector N-Type connector to BNC connector
Set the function generator to output a 100 mVpp sine wave at
100MHz. Then connect the function generator to the RF input of the
DSA1000 series analyzer. After connecting the function generator to
the spectrum analyzer, you should observe a spectrum graph as
observed below.
RIGOL TECHNOLOGIES USA INC
877-4-RIGOL-1 How-To Guide
www.rigolna.com
Now, press the Auto-Tune button (under Sweep Control). You should
know observe the following spectrum graph as below:
The Auto-Tune feature is a very useful and time saving feature to use.
Whenever faced with uncertainty about the position of the center
frequency on the spectrum graph, the Auto-Tune feature will assist
the user center the display at the highest peak in the input signal.
Markers:
Markers are used for the purpose of obtaining accurate
information about a specific data point on the spectrum graph.
For demonstration purposes, with the DSA1000 in the same state as
the figure above, press the “Peak” key.
RIGOL TECHNOLOGIES USA INC
877-4-RIGOL-1 How-To Guide
www.rigolna.com
As observed a marker will be placed at the center of the display. The
peak button is used for the purpose of placing a marker at the
highest point amplitude wise of on the spectrum graph as in the
picture below:
Similarly, if another peak exists to the left or the right of the current peak,
using the “L-Peak” and “R-Peak” buttons allows us to navigate amongst signal
peaks. In the above case, only one real peak exists, as this is a pure sine wave.
Alternatively, the peak menu on the left can be used to navigate through the
signal’s peak. It appears when the “Peak” button is pressed.
RIGOL TECHNOLOGIES USA INC
877-4-RIGOL-1 How-To Guide
www.rigolna.com
Frequency Controls:
Pressing the black “FREQ” button, will expose the Frequency menu on the
right hand side of the screen.
We can see that the frequency is centered at 100 MHz, which is the frequency
of the sine wave being inputted into the system.
Push the “Center Frequency” soft button; this will highlight the center
frequency value selection and using the numeric pad change the center
frequency to a different value. With a new center frequency, we can now
observe a shift in the peak location on the display as below:
RIGOL TECHNOLOGIES USA INC
877-4-RIGOL-1 How-To Guide
www.rigolna.com
Span Adjustment:
In this section we explore the span adjustment capability. First, press the
“Auto tune” button, the peak of the waveform goes back to the center of the
screen.
Press the “SPAN” button, the span side menu will appear on the right hand
side of the screen.
RIGOL TECHNOLOGIES USA INC
877-4-RIGOL-1 How-To Guide
www.rigolna.com
Press the “Zero Span” soft button; you will observe the time domain
characteristics of the signal at the center frequency specified, however it’s
worth noting, this option is more useful for observing the envelope of a
modulated wave rather than that of a carrier, though the amplitude of a
carrier wave can be observed:
RIGOL TECHNOLOGIES USA INC
877-4-RIGOL-1 How-To Guide
www.rigolna.com
Amplitude Adjustment:
Press the black “AMPT” button; you will observe the amplitude menu on the
right hand side as below:
Press the “Ref Level” soft button; you will observe the amplitude drop down
as below:
Press the “Auto Scale” soft button; you will observe the amplitude return
back to an optimal position on the screen.
Track Generator Usage:
Some DSA units come standard with a Track Generator (TG). A Track
Generator outputs signals at the same frequency as the current sweep
frequency of the RF Input. This can be used for the purpose of characterizing
components and cabling.
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