
Phase Noise Using a Phase Lock Loop
Define Msrmnt
Instr. Params
SOURCE
RND
INTERnSfPRRFlMETER ENTRY
FNTSTR THE FOLI.!"iWIf-Jf. PARAMETERS;
-larr ier Frequency fg hl.F+b J] Hi
CtelciTiji .'Dis-ir .
li-iui;!
Iie-^uency I !U. 11)111/,T+
fi
. 1 H-
VCO Tuning Constant i 1UU 1 Hz/Vol t
Center Voltage. nf VITl Tuning Curve [ U J Vol ts
Voltage Tuning Range of TO i f ."■ : Vol ti
VLU lu'l--[jurt iii[ji,> Resistance [ [ .F**, ', 'Itiips
fl.-.-eptable
Villas
1
i T'l ilu.E'V
SELECT n PHRSE DETECTOR [ Pvess ■Vie.:' Detect. J
Internal Phase Detector: 1.2 <,Hi to IS CHr
Paternal Phase/fiH riete.: tor
To '-etum *,, MEFftiREWHT UEMNIIIUN' i Fress 'El'lNF' 1
Frequency Parameters
Carrier Frequency is the fundamental (center) frequency of the device you
are measuring. The HP 3048A uses the Carrier Frequency entry to:
• Label the Carrier Frequency on the Results Graph.
• Select the correct bandpass filter for the HP 11729C, when it is
configured in the system as a Down Converter.
• Calculate Sigma vs. Tau and S
y
(f).
2-14 tnstr. Params: $N w/PLL
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