Agilent Technologies HP 8642A/B Especificações Página 186

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Minimum Y Coordinate: This parameter specifies the upper limit of the
Y axis. The entry can be in integer or exponential form. The acceptable
limits are displayed on the screen. Units for the Y axis are determined by
the Graph Type selected. This value must be less than the Maximum Y
coordinate.
Maximum Y Coordinate: This parameter specifies the lower limit of the
Y axis. The entry can be in integer or exponential form. The acceptable
limits are displayed on the screen. Units for the Y axis are determined by
the Graph Type selected. This entry must be greater than the Minimum Y
coordinate.
Graph Type Other than
AM
or Baseband Noise: This parameter specifies the
data type in which the measurement results will be displayed.
Single-sideband phase noise (dBc/Hz). The HP 3048A computes £(/)
as:
2
?4fi
d
f>
and
P
lots
the results in dBc
-
Phase Modulation Spectral Density {dB/Hz). The HP 3048A computes
S^(f) as: //
2
S$(f) df, and plots the results in dB with respect to 1
radian (Radians, and Degrees).
FM Spectral Density {Hz/\fWz). The HP 3048A computes S
u
(f) as:
ijl
S<t>(f)
x f
2
df, and plots the results in Hz (Residual FM).
Spectral Density of Fractional Frequency Fluctuations (l/\fWz). The
HP 3048A computes S
y
{f) as: //
2
S^f) x (-j^ f df, and plots
J i J CQTVtBT
the results without units.
Noise Figure for 2-Port Devices. The HP 3048A computes the noise
figure (NF) as: £$(/) + 174 + Pin, and plots the results as dB/Hz.
Pin is the input power listed in the Computed Output "Input Power at
Amplifier..." field.
rev.05SEP89 Define Graph 2-117
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