TECHNICAL DESCRIPTION AND OPERATING MANUAL ST131 <PIRANHA II> and ST131N
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3.8 “OSCILLOSCOPE” OPTION
This option is intended for analyzing signals in time domain.
Log in with pressing
and
. In the "DEMODULATION" mode transition in the waveform
of the demodulated signal occurs immediately after pressing
.
This option is unavailable from the FULL RANGE mode of the “RADIO 30-4400 MHz” channel and
from the BAND mode with more than 10 MHz bandwidth.
1.
Value of the time segment per one point of
indication.
2.
Value of the tuned frequency (the center frequency
of the current band).
3.
Length of the time interval for the graph.
4.
Value of the vertical sensitivity.
5.
Root mean square (RMS) value of the signal level.
6.
“Peak to peak” signal level value.
CONTEXT BUTTON FUNCTIONS _____________________________________________
–
swtch to the spectrogram.
Repeatedly pressing the
button will result in selection of the following functions:
- cursor measurements sub-mode.
– activation access to modify the horizontal time. Change by rotating the rotary knob.
- activation access to change the center frequency of the current band (only for the "BAND"
mode). Change by rotating the rotary knob.
– activation access to change the trigger line. Change by rotating the rotary knob.
- activation of the second cursor line for relative cursor measurements.
___________________________________________________________________________________
Repeatedly pressing the
button will result in selection of synchronization results
display:
– synchronization is disabled.
– oscillogram is displayed dynamically at the screen under the conditions of synchronization.
– oscillogram is freezed under the conditions of synchronization that ensures readiness for the
cursor measurements.
Figure 33
