Agilent
E8663B (March 2007)
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DC-coupled phase noise performance :
Locked on the house BVA .
Carrier freq is 940 MHz , RF level is -4dBm
Fig 1 E8663B phase
noise. Vertical scale is 0.45 deg/div
(calibration steps are 1 deg wide). The linear drift is
explained by lab temperature change.
Close-ups of E8663B (left) and Racal-Dana
(right) under the same conditions
Spectral measurements:
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Fig 2 : The 8663B spectrum (blue) versus the 8644B (current PdB
master synth, red trace) and the noise
floor of the spectrum analyser (green)
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Fig 3: same as above, at the maximum resolution of 2.5
Hz/div.
8663B= red, 8644B= blue
Sensitivity to external 10 MHz
level:
The 10 MHz level is varied from +10 dBm until the generator
automatically switches to INT. For all the levels accepted as EXT, the
phase noise RMS keeps the same value.
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