Transient Detector Operating Mode - Promax 10 Manuel D'utilisation

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 30.- 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).
To initialize the TIME and COUNTER fields, press the SPECT [13] key.
In the lower part of the screen it appears a bar that shows present level, a
dotted line shows the detection threshold (REF. LINE) whereas the continuous line
indicates the maximum detected level.
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USER'S MANUAL. PROMAX-10
Figure 31.- After several scans.
Figure 32.- Transient detector mode.
IMPORTANT
04/2004