Max Operating Mode; Min Operating Mode - Promax -8 SE Manual

By pressing the rotary selector
[9] again the reference level may be
modified.
Pressing the rotary selector [9] a second
time will activate the tuning frequency field of the
marker, being possible to tune new frequencies.
The attached figure shows an horizontal
line at 45 dBμV. This line allows to identify levels
over a reference of our interest easily. The
activation and definition of this reference line is
carried out on the spectrum analyser configuration
menu.
4.2.4.2

MAX operating mode.

The SPECTRUM operating mode also
permits to be configured as maximum hold
(MAXIMUM INGRESS). This option is selected on
the Spectrum Configuration menu (section 4.2.4.5).
In the MAX mode, the
the screen the maximum measured level through a
dotted line.
This measurement is used to be carried out on the return path and permits to
detect intermittent interferences.
Since on this operation mode the
maximum measured value (through a dotted line), after making several measurements
over the band, it will be possible to detect impulsive type interferences. It is advised to
previously define a reference line which actuates as a maximum noise threshold
(30 dBμV on previous figure).
4.2.4.3

MIN operating mode.

This measurement permits to detect permanent channel interferences that in an
other way could remain masked because of the variable nature of the signal. It is
interesting in analogue channel measurements as well as in digital channel.
To select this representation mode you must select the MIN mode, MINIMUM
INGRESS (see section 4.2.4.5. Spectrum mode configuration menu).
In this operating mode it is advised to select the Average detector (see section
4.2.4.5. Spectrum mode configuration menu).
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PROMAX-8
SE holds on
PROMAX-8
USER'S MANUAL. PROMAX-8
Figure 33.- Reference level
modification.
Figure 34.- Reference line.
Figure 35.- MAX mode.
SE holds on the screen the
SE
09/2013