39
In fact when you turn ON the Internal Pre-Amp you will see the following message pop up; click OK if you
wish to proceed.
Noise Reduction: It is only useful and implemented for a spectral scan or a spectral/spatial scan. It is set
to Level 1 by default. Noise Reduction is a signal processing algorithm that looks at all the signals, and
compare them with the noise floor and the reference level of the analyzer for each frequency to decide
whether it is a true signal and worth keeping. Increasing from Level 1 to 2 and then 3 results in a flat noise
floor with only a few peaks remaining.
Level 2 is not working properly in this release. Do not use.
When set to OFF, the user sees the raw data as captured by the spectrum analyzer in 40 MHz IBW
blocks, following the reference levels of the analyzer as it goes up and down across the frequency span.
Noise Threshold: It is only useful and implemented for a Spectral or Spectral/Spatial scan. Once at Noise
Reduction Level 3, you can further decimate the data points by increasing the noise threshold from 0 to
1, then 1 to 2 etc.
External RF Bypass:
When ON, the RF signal from the scanner bypasses the built-in pre-amp and
attenuator section and goes to the RF OUT port to which you can connect external devices such as
amplifier, attenuator, passband filter etc. You then connect the output of such external device into the RF
IN port of the built-in spectrum analyzer as long as the power into the RF In port does not exceed
-10 dBm
.
To correct the displayed amplitude levels for the gain or attenuation value, select the value from the drop
down menu or manually entering the value. When the External RF Bypass is ON, the Internal Pre-amp
is automatically turned OFF
Description Tab
You can name the node and add a description.
EMxpert Software
Nodes
