Agilent Technologies HP 8642A/B Specifikace stáhnout pdf (Strana 48)

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What is the HP 3048A Used For ?

The HP 3048A is designed to reduce the difficulty of making accurate

phase noise measurements. The HP 3048A allows you to make phase

noise measurements using a phase detector in a phase lock loop con-

figuration, a phase detector without a phase lock loop, or with an FM

discriminator.

Each method allows the measurement results to be plotted as phase noise

{£(/) or S$(f)), or frequency noise (S

(f) or S

(f)) over an offset range

of 1 mHz to 100 kHz (or to 40 MHz with a supported RF Analyzer).

Using an external crystal detector, the HP 3048A system can automat-

ically quantify the level of AM noise that could affect a phase noise

measurement.

The HP 3048A allows you to measure and plot the results of Noise Voltage

measurements.

A real-time measurement mode (Noise Monitor) is available for monitor-

ing single frequency points, or changes in the level of phase noise and

discrete spurs as changes are made to the device-under-test.

The system also allows you to plot measured data (Computed Outputs) as:

• Integrated Noise,

• Sigma vs Tau (Allan Variance),

• Various Normalized Bandwidths,

• 2 or 3 Oscillator Comparisons,

• Spur Listings.

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