Agilent Technologies HP 8642A/B Specifiche Scaricare il pdf (Pagina 112)

100

101

The Phase Detector Constant

Introduction

The phase detector translates relative phase fluctuations between the two

phase detector inputs to voltage fluctuations. The amplitude of the phase

detector's output voltage is proportional to the amount of relative phase

fluctuation at its two inputs scaled by and the sensitivity of the detector.

The phase detector's sensitivity is the Phase Detector Constant. The Phase

Detector Constant determines the absolute noise floor of the system.

The accuracy of the Phase Lock Loop measurement is dependent on the

accuracy of the Phase Detector Constant.

"Use the Current Detector Constant" and "Measure the Detector Constant"

are the two methods available for determining the Phase Detector

Constant. The HP 3048A uses the method displayed in inverse video. The

Detect Const softkey allows you to select the desired method.

Calibration Method

Use the Current

Detector Constant

Measure the

Detector Constant

Considerations

Uses the displayed value (in memory from the last

measurement or from user entry). This method saves

measurement time by eliminating the Phase Detector

Calibration from the measurement process.

Recommended method to ensure measurement accuracy.

Calibr Process: $N w/PLL 2-43

1 2 ... 107 108 109 110 111 112 113 114 115 116 117 ... 452 453

Commenti su questo manuale

Nessun commento

Agilent Technologies HP 8642A/B Specifiche Pagina 112

Commenti su questo manuale

Prodotti e manuali riguardandi Misurazione, test & controllo Agilent Technologies HP 8642A/B