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Chapter 4 Using Real-Time Spectrum Analyzer
Conducting spectrum measurements
3
Tap the chart screen to move the heatmap marker or move the vertical bar and
horizontal bar.
To set bitmap
1
Tap Menu > Bitmap.
2
Tap Dot Persistence Time and input a value using the on-screen keyboard. This
represents the time that accumulates heatmap data.
3
Tap to switch Bitmap Scale to On to enable auto scale or Off to disable auto
scale.
If the Bitmap Scale is On, the point where the maximum hit represents maximum
colors. If the Bitmap Scale is Off, the bluer color (closer to 0% of the color bar) is
mapped with hit.
4
Tap Bitmap Min and input % value using the on-screen keyboard.
Bitmap Min represents unused bitmap color range. If you set it to 10%, the color
matched with 10% or below does not show.
5
Tap Bitmap Max and input % value using the on-screen keyboard.
Bitmap Max represents max range of bitmap colors to be used. If you set it to
90%, the color that exceeds 90% does not show.
6
Tap Hit Min and input % value using the on-screen keyboard.
Hit Min represents the minimum number of hits not to be converted to colors. If
you set it to 10%, the hit matched with 10% or below is not converted to colors.
7
Tap Hit Max and input % value using the on-screen keyboard.
Hit Max represents the maximum number of hits to be converted to colors. If you
set it to 90%, the hit matched with 90% or above shows with max colors.
Persistent spectrogram
The persistent spectrogram is useful when attempting to identify periodic or intermittent
signals as it captures spectrum actively over time and uses various colors to differen-
tiate spectrum power levels. When the directional antenna is used to receive the signal,
you will see a change in the amplitude of the tracked signal as you change the direction
of the antenna and see a change in the Spectrogram colors. The source of the signal
is located in the direction that results in the highest signal strength.
Figure 31
Page 64
NOTE
If you select the heatmap marker, you can only use the Peak Search and
Always Peak options. Delta pair is not available. See
page 20
for more details.
displays a sample persistent spectrogram measurement.
SPA06MA-O User's Guide
22145360, R005
"Using marker" on
April 2021
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