FM Transmitters
78
To set Ref Level:
• From the Marker screen, select Marker To Peak
• Select Marker To Ref Level
11 Tune Center Freq in 1 MHz steps anywhere from 400 kHz to 1 GHz in
search of harmonics, sub-harmonics, multiples, or spurious emissions.
NOTE: If spurious emissions are suspect, un-key the Transmitter, and verify that
emissions are from the transmitter and not another source.
To measure spurious emission of the transmitter under test:
• Place at center frequency.
• Or perform the following:
a Select Main from the Controls field.
b Select Markers from the Choices field.
c Position the marker on the desired peak. (Position or Next Peak)
Marker frequency and level are displayed as shown.
Lvl
Freq
SPECTRUM ANALYZER
Marker
MHz
dBm
101.12980
-99.92
BW= 3 kHz
Spurious or Harmonic
Level & Frequency
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com
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