Digital Signal Processing Reference
In-Depth Information
HP 54510A
Oscilloscope
BNC
Tee
HP 3324A
Synthesized
Sweep Generator
HP 8590L
RF Spectrum
Analyzer
FIGURE 1.8
Experimental setup for signal time and frequency analysis.
c.
Set the signal analyzer to a start frequency of 1.0 MHz and a stop
frequency of 3.0 MHz. Observe the frequency-domain output on
the Spectrum Analyzer and note down the measured amplitude
and frequency of the sinusoidal signal. Use the markers in the
Signal Analyzer to peak search mode to track the peak value in
the signal spectrum.
d.
Comment on the differences, if any, between the set sweep gen-
erator frequency, oscilloscope output frequency, and signal ana-
lyzer output frequency.
•
In this experiment, time and frequency measurements will be per-
formed using the HP 35665 Dynamic Signal Analyzer. The Dynamic
Signal Analyzer is a very versatile low-frequency equipment that
can analyze and manipulate signals in the frequency range of 0 to
50 kHz.
a.
The Dynamic Signal Analyzer has one output port called
source
,
and two input ports called
channel 1
and
channel 2
. The output
of the source port is controlled by the source key on the top
section of the Signal Analyzer. The source can generate several
kinds of sources including single frequency sinusoidal, swept
frequency sinusoidal, and random noise.
b.
Connect the source output to channel 1 input with a BNC cable.
Select the source key, and select sinusoidal source with a frequen-
cy of 10 kHz and an amplitude of 5 volts. Select the
measurement
key, and alternate between time and frequency settings to ob-
serve the signal in both the domains. Time and frequency plots
of the signal can be viewed simultaneously by using the
dual
channel
display mode.
c.
Repeat part (b) of this experiment with a
random signal
source
having a peak amplitude of 1 volt. Observe the random signal
in both time and frequency domains.
