GW Instek GRF-1300, User Manual

Page: 34 / 110

GRF-1300 User Manual and Teaching Materials
32
The figure above is a screen shot from a typical spectrum
analyzer display. The horizontal setting is frequency and the
vertical axis is amplitude. Therefore a spectrum analyzer is
basically used to perform frequency and amplitude-related
measurements. We can operate a spectrum analyzer by using the
Frequency, Amplitude and other function keys in conjunction
with the keypad to control the frequency, amplitude and other
related settings.
The Frequency,
Amplitude and
Span keys as well
as the keypad and
unit keys.
There are two ways to set the frequency. If the frequency of
the signal that you want to measure is known, then we can set
the frequency using the center frequency and span functions. If
we need to measure a frequency
range , then we can set the start
and stop frequency range.
Experiment
contents
Connect the antenna to the GSP-730 spectrum analyzer to
test the radio waves in the environment.
Experiment
steps
1.
Connect the antenna to the GSP-730 spectrum analyzer.
Measure the strength of a mobile phone’s transmitter signal.
Because the frequency band of a mobile phone is between
800MHz - 1900MHz, we will set the frequency range between
800 - 1900MHz.
2.
Set the GSP-730 as follows:
z
Start frequency: 800MHz,
z
Stop frequency: 1900MHz
•
Reference level
：
-30dBm
•
RBW
（
RBW
） ：
Auto
Step1
F2 8 0 0
Step2
Frequency
F3 1 9