Specifications

3
To perform the following demonstrations,
the PSA requires these options.
Demonstration preparation
To configure the measurement
system, simply connect the noise
source (Agilent 346C) to the rear
panel connector labeled “noise source
drive out + 28 V (pulsed)” using a
1 meter BNC cable (50 Ω).
Noise figure measurement
process summary
Measuring the noise figure of a
device requires knowledge of the
measurement system. Once the noise
figure of the measurement instrument
is known and the gain of the device
under test (DUT) is known, then the
noise figure of DUT can be
calculated, after which the overall
noise figure is measured. Most
computing measurement systems,
such as the Option 219 measurement
personality, can display noise figure
in dB. Noise figure measurements
are comprised of three steps:
1. Enter the excess noise ratio ENR
values in dB of the noise source.
2. Calibrate the measurement
personality.
3. Make noise figure measurements.
Product type Model number Required options
PSA Series spectrum analyzer E4440A/43A/45A/46A/48A Option 1DS built-in preamplifier
Option 219 noise figure measurement
personality