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Chapter 3 Demo Waveforms
Demo 2: Phase Modulation Analysis (BPSK)
Demo 2: Phase Modulation Analysis (BPSK)
This demonstration shows the phase modulation analysis capabilities of
the TIA, using a BPSK signal (binary phase shift keying). This is a
common form of intentional phase modulation for digital communication
systems, where a carrier is shifted between two phase states
(± 180 degrees). A "1" may be represented by one of the phase states,
while a "0" is represented by the other.
The HP E1740A is used to gather timing information from the modulated
carrier. This information has been processed as deviation in phase from a
carrier and stored in a file. The following features will be demonstrated on
this waveform:
•
Phase Deviation measurements
•
De-Tilt feature
•
FFT analysis
Start
1
Select File>Load Setup... .
2
Open the demo subdirectory (c:\hpe174Xa\demo) and click on the file
"bpsk.stp."
3
Click the OK button.
3-12
Getting Started Guide
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