Joel Dickerson
ET3330 Telecommunications
Unit 5 Lab 1 & 2
There is only one line because there is only one input frequency, which is 500 hz. It also
happens to be the center frequency of the spectrum analyzer.
This output is highest at the signal frequenc

Joel Dickerson
ET3330
Unit 2 Lab 1
The simulation frequency is set to 10khz because the input frequencies are in the khz range. The
Nyquist minimum bandwidth rule requires this.
Joel Dickerson
ET3330
Unit 2 Lab 1
Changing the amount and density of the noi

Joel Dickerson
ET3330 Telecommunications
Unit 6 Lab 1
The AM modulator has marks for the one bits and spaces for the zero(low) bits. The
Multiplier unit multiplies the true digital zero bits by the amplitude modulated sine wave
to form the Multiplication

Joel Dickerson
ET3330 Telecommunications
Unit 4 Lab 2
The bandpass filter removes the high and low end frequencies and leaves only the middle frequencies,
giving the output a squeezed distorted appearance. The square wave filtered by the butterworth
bandp

Joel Dickerson
ET3330
Lab 3
The input contain the intelligence signal, unaltered. The output has filtered out the high frequency
components and left the low frequency sine wave.
As the frequency increases, the level of gain diminishes. Also the phase angl

Joel Dickerson
ET3330
Unit 8 Lab 1
Data 1
Plot
out
0.1 Hz
Rect. Pulses ck
Trg
*
1 Hz Sine
ph
(1 V)
in
512pt Re FFT
Power Spectral
Density(dBm/Hz)
25
Trg
0
Mag[ ]
Ph[ ]
f req[ ]
-25
BPSK 1
-50
0
2
Data 2
Trg
*
in
512pt Re FFT
Power Spectral
Density(dBm/Hz)

Joel Dickerson
ET3330 Telecommunications
Unit 4 Lab 1
All three plots are the same sine wave at the same frequency and the same amplitude.
The difference is that the first is sampled every .2 seconds, the second is sampled
every tenth of a second, and the

Joel Dickerson
ET3330
Unit 9 Lab 1
Simulation:
System > System Properties:
Frequency: 100
End: 40
[ck]
L= 31 PN
0.25 Hz
Bandpass filter
6th Order 0.5 - 1.5 Hz
Butterworth Bandpass
Comm>Filters>IIR
out
*
ck
Baseband Signal
Bilevel, Bit rate: 0.25
Internal

Joel Dickerson
ET3330
Unit 7 Lab1
The measured RSL was around -5.4 dBm. After inserting the interference, the RSL was only around
-.3 when referenced to the noise power. Starting the interference 180 degrees out of phase with the
intelligence signal furth