
To make an AM Noise Measurement, an AM Detector is used to translate
AM Noise to voltage fluctuations. A DC block (HP 3048A Option K21) is
also required to eliminate any DC from overdriving the HP 11848A.
Baseband Measurements
The Noise Measurement Using the HP 3561A Only baseband noise mea-
surement measures the noise voltage of a device from .01 Hz to 100 kHz.
This measurement type uses the HP 3561A Dynamic Signal Analyzer to
measure the noise voltage directly.
Press the
New
Msrmnt softkey to begin the measurement. (This measure-
ment type does not require any measurement calibration.)
NOTE
Connect the signal source to the HP 3561A INPUT as
shown in the Connect Diagram. It may be necessary to
use a DC block to enable the HP 3561A to have maximum
dynamic range. The HP 3561A is DC coupled in order to
have flat response below 1 Hz.
2-8 Type/Range
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