ST 500 "Piranha" Operation Manual: Selective HF Detector Channel
24
Fig.19
In fig.19:
1 - active channel
2 - white frame of the active window (OSCILLOSCOPE or SPECTRUM ANALYZER)
3 - OSCILLOSCOPE window
4 - digital communications standard
5 - division value of the oscilloscope time axis
6 - SPECTRUM ANALYZER window
7 - frequency value at SPECTRUM ANALYZER marker position
8 - lower bound of range
9 - spectrum
10 - SPECTRUM ANALYZER marker
11 - upper bound of range
12 - passband width
13 - signal level (at the current frequency)
The screen is divided into three windows:
Signal level bar (fig.19, 13)
OSCILLOSCOPE (fig.19, 3)
SPECTRUM ANALYZER (fig.19, 6)
The signal level bar shows signal level at the current frequency (fig.19, 7) as determined by
the position of the SPECTRUM ANALYZER marker (fig.19, 10). The oscillogram (fig.19, 3) and the
spectrogram (fig.19, 6) are displayed in two other windows. Only one window can be active at a
time, highlighted by a white frame (fig.19, 2). To switch between OSCILLOSCOPE and SPECTRUM
ANALYZER windows, use the
and
keys.
For locating the source of the detected signal, the "SET "0" function is implemented. When
activated, the detected signal level is set as "0" and the signal level bar will be showing the
difference in excess of it (the level bar changes color to lilac).
To turn the "SET "0" function on/off, use "ENTER".
