Keysight Technologies N9322C - ASK;FSK Modulation Analysis

Functions and Measurements
Analysis the Modulated Signals
90
ASK/FSK Modulation Analysis
The ASK/FSK modulation analysis function supports four
display modes:
• Symbol
• Waveform
• ASK/FSK Error
• Eye Diagram.
User definable limits provide Pass/Fail indicators of four
types:
• Maximum carrier power
• Maximum ASK modulation depth/FSK frequency deviation
• Minimum ASK modulation depth/FSK frequency deviation
• Maximum carrier frequency offset.
The metrics includes carrier power, ASK/FSK error, ASK
depth/FSK frequency deviation, and ASK index etc. The
waveform with metrics and setup parameters can be saved
for reports and future Measurements.
In the following example, you can use any source available
(such as your remote key of the car) as long as it has
ASK/FSK generation capability. For ASK/FSK signal, its
Filter is Nyquist and Alpha is 0.35.
ASK Modulation Analysis
Please refer to the procedures below to analysis the ASK
demodulation.
1 Connect the signal generator to RF IN connector and turn
on the signal generator’s ASK modulation and RF output.
2 Turn on the ASK demodulation analysis function.
Press MODE > Modulation Analysis > ASK.
3 Press Frequency > Carrier Freq > 100 > MHz to set the carrier
frequency.
4 Press Meas > Symbol Rate > 10 > MHz to set the symbol rate.