Agilent Technologies HP 8642A/B Especificaciones Pagina 56

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System and Option Specifications
The System specifications and Option specifications are iisted in Table 1-1
and Table 1-2 respectively. Specifications describe the instrument's war-
ranted performance. Supplemental characteristics are intended to provide
information useful in applying the instrument by giving typical, but not
warranted performance parameters. These supplemental characteristics are
denoted as "typical," "nominal," or "approximate."
National Bureau of Standards Traceability
Measurement of phase noise is a ratio measurement where both the
numerator (the noise power) and the denominator (the carrier's power)
of the ratio are measured by the same system spectrum analyzer(s). The
accuracy of this relative measurement depends on the amplitude linearity
of the spectrum analyzer. (A precision attenuator is used, to verify the
linearity specification of the spectrum analyzer.) The amplitude linearity
calibration of the spectrum analyzer is be traceable to the National Bureau
of Standards (NBS) if the precision attenuator and other instruments used
to perform the calibration are traceable to NBS.
rev.05SEP89
General Information 1-11
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