Technical description and operating manual ST 167 and ST167W5
11
The view in the absence of exceeding threshold by signal is presented on Fig 10.
The top line shows the range and in brackets, the band of analysis (MHz).
The threshold is set in the "Threshold .." - "User,s band" (Table 2). Line
threshold displayed on the spectrogram (Fig. 12).
Bandwidth and step - "Settings .." - " User,s band " (Table 3).
The line "Bypass freq = 035% "informs that enabled a filter that excludes from the analysis the
frequency band corresponding to the DRT (Table 6). This filter is enabled by default. Enable / disable the filter
takes place through the menu (Table 3).
The numerical value of excluded frequencies, expressed as a percentage, is variable and depends on the
frequency band.
This provides the search for analog signals avoiding the influence of such radiation sources as cellular
base stations.
The level and frequency of the signal with the larger level to be displayed (Figure 11).
Additional information
The appearance of the red triangle in the top right corner of the display indicates the change in the gain
of the internal amplifier. If the triangle pointing up, the gain decreases - to eliminate the overload when down, -
increasing to the maximum value based on the level of noise and dynamic range in a given band.
Continuous display an upward triangle means finding a ST167 able to overload. Before eliminate it, any
measure should be considered will be incorrect.
By pressing the button
you can drill to view the selected band spectrogram
(Fig. 12). The bottom line shows frequency, level of the maximum signal and level of noise.
Return to the scale indication by pressing the button
Red line is threshold.
In case of choosing in range segment analysis (fig.13) transition to full range
with given band (200MHz on figure) is done by pressing
and
buttons.
After detecting the signal of ART location of its source and audio control carried out in mode
the "SEARCH”.
Fig.12
Fig.13
Fig.10
Fig.11
