artisan 8640B - AM 3 Db Bandwidth Test; AM 3 Db Bandwidth Test Setup

Model 8640B TM 9-4935-601-14-7&P
PERFORMANCE TESTS
4-32. AM 3 dB BANDWIDTH TEST
SPECIFICATION:
AM 3 dB Bandwidth:
Frequency Bands 0 to 50% AM 50 to 90% AM
0.5 - 2 MHz 20 kHz 12.5 kHz
2 - 8 MHz 40 kHz 25 kHz
8 - 512 MHz 60 kHz 50 kHz
DESCRIPTION:
An audio spectrum analyzer is used to measure the 3 dB bandwidth. The analyzer is set to sweep over the specified
audio frequency range and its tracking generator output is used to amplitude modulate the Signal Generator. The
generator's RF output is detected and fed to the analyzer's input. Amplitude variation is measured on the analyzer's
display.
Figure 4-18. AM 3 dB Bandwidth Test Setup.
EQUIPMENT:
Audio Spectrum Analyzer.................................................HP 141T/8552B/8556A
Crystal Detector ..................................................................................HP 8471A
1 kΩ Resistor ................................................................................ HP 0757-0280
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