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USER'S MANUAL.
PROMAX-10
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).
Figure 43.- MIN mode. First scan.
Previous figures show an example of this measurement over a digital channel.
Left figure corresponds to the first sweep. After several sweeps (right figure) an
interference is seen at the centre of the channel, which previously remain masked by
the noisy nature of the signal.
4.2.4.4
TRANSIENT DETECTOR operating mode
The Transient detector mode is only operative in the return path.
The TRANSIENT DETECTOR mode allows
to count the number of transitory with a level higher
than a certain threshold. The threshold is defined by
the user (between 20 and 60 dBµV) as well as the
detection frequency range.
The SCAN field shows the margin of
frequencies on which the detector acts (the
higher frequency can be reduced by means of the STOP. FREQ. parameter on the
configuration menu).
The lower line (TIME) shows the time since the detector is active.
The COUNTER field shows the number of impulses that have exceeded the
level defined by the REF. LINE parameter in the configuration menu of the SPECT
mode (section 4.2.5.5).
07/2011
SE
Figure 44.- After several scans.
IMPORTANT
Figure 45.- Transient detector mode.
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