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Chapter 7 - Analyzer Mode
AMA 310/UMS V21.0
Chapter 7
Analyzer Mode
The AMA 310/UMS headend device may also be used as a "stand-alone" spectrum analyzer for
the return path range. For the return path frequency range the spectrum analyzer may be selected
from the basic state of the AMA 310/UMS.
Caution:
During the "stand-alone" analyzer mode no transport stream will be passed
on to the field instruments and communication of the field instruments to the
headend is also not possible!
The following display shows a return path spectrum as an example:
Figure 7-1 Graphics display after start of the real time spectrum analyzer
The level raster is 10 dB/DIV. The dynamics can be a maximum of 70 dB.
The labelling of the level lines in the unit dBµV can be seen on the left side. In the blue bottom line
the start and stop frequency (band limits) are shown. At the same time, further information is shown
in the LC display. These are the current cursor position, the level measured at the cursor position
as well as the attenuation of the input RF level set.
Figure 7-2 LC display content after call-up of the return path spectrum analyzer