TECHNICAL DESCRIPTION AND OPERATING MANUAL ST131 <PIRANHA II> and ST131N
32
AUXILIARY CONTEXT BUTTON FUNCTIONS _____________________________________
- access to a choice of synchronization conditions:
• «->» -
synchronization
happens if
the instantaneous
value of the signal
above a predetermined
level.
• «<-» -
synchronization
happens if
the instantaneous
value of the signal
is below a predetermined
level.
Successive
pressing
will select
:
- disable the cursor line.
/
- start/stop redrawing the waveform.
______________________________________________________________________
Automatic alignment of the waveform relative to the center of the screen occurs by
pressing the
button.
Zoom the waveform vertically by pressing the buttons
and
.
Second cursor line appears when you press
and that ensures cursor measurements.
1
Sweep time value in the position of the auxiliary
cursor line
2
Signal level at the location of the cursor line
3 Value between the time values of main and auxiliary
cursor lines
4 Frequency corresponding to the time period specified
in item 3.
There is a feature of interpreting the results of cursor measurements in the oscilloscope for the
BAND mode. To get the true value of the frequency of a carrier, you must go to the "SPECTRUM" option,
or recalculate the value obtained from the measurement of a cursor by adding or subtracting this value
with the value of the tuned frequency. Time values for cursor measurements in this case remain true
always.
Figure 34
