Digital Signal Processing Reference
In-Depth Information
of the input signal as a function of frequency. Please see
Appendix D
and
Appendix B
, respectively, for manufacturer's specifications and operating
instructions on these two pieces of measuring equipment.
1.4.2
Dynamic Signal Analyzers
These analyzers are more advanced equipment, which can generate regular
signals, as well as random noise. They can measure signals in both time and
frequency and can also measure frequency responses of devices. The HP
35665 Dynamic Signal Analyzer in the laboratory is a multipurpose piece of
equipment. See
Appendix C
for manufacturer's details.
1.4.3
Sources
Sources generate signals that vary in shape, amplitude, frequency, and phase.
The source used in the laboratory is the Agilent HP 3324A Synthesized
Sweep Generator. See
Appendix A
for the manufacturer's specifications and
other operating instructions.
1.5
Digital Signal Processors (DSPs)
Digital signal processors are very widely used components in many com-
munications systems, such as cell phones. They are, essentially, programma-
ble microprocessors that can perform many signal processing functions such
as filtering, mathematical operations, convolution, and Fast Fourier Trans-
form (FFT). The Texas Instruments TMS320C6711 floating point DSP Starter
Kit will be used widely in the laboratory to study important functions such
as filtering and noise removal. See
Appendix E
for manufacturer's details.
Exercise 5: Basic experiments using sources and measuring equipment
•
In this experiment, basic time and frequency measurements will be
performed using the oscilloscope and signal analyzer.
a.
Connect the equipment together as shown in the schematic in
Figure 1.8
.
Use BNC cables and a BNC Tee to connect the circuit.
Make sure the HP3324A Synthesized sweep generator power
button is in the
off
position.
b.
Set the sweep generator to output a sinusoidal signal, with an
amplitude of 5 volts and frequency
f =
2 MHz. Observe the time-
domain signal output on the oscilloscope and note down the
measured amplitude and frequency of the sinusoidal signal.
