Instructions

T3VNA User Manual 67
3.1.3 Amplitude
Set the amplitude parameters of the analyzer. Through modifying these parameters, signals under
measurement can be displayed in a proper mode for easier observation and minimum error.
3.1.3.1 Auto Scale
Automatically adjust the grid scale and reference level of the currently selected trace to optimize the
trace display.
3.1.3.2 Auto Scale All
Automatically adjust the grid scale and reference level of all display traces to optimize the display of
traces.
 After setting “Auto Scale All”, the grid scale and reference level of dierent traces may be dierent.
 In the left status bar of the screen, the grid scale and reference level of each trace are displayed
below the trace mark.
3.1.3.3 Scale
Set the vertical scale of each grid to adjust the range of amplitude that can currently be displayed. This
value is also displayed in the left status bar of the screen.
Table 3-5 Scale/Div
Parameter Explanation
Default 10 dB
Range 0.1 dB - 1000 dB
Unit dB
Knob Step 0.1 dB - 1 dB, step = 0.01 dB
1 dB - 10 dB, step = 0.1 dB
10 dB - 100 dB, step = 1 dB
100 dB - 1000 dB, step = 10 dB
Direction Key Step In 1-2-5 sequence
3.1.3.4 Ref Level
Set the reference level to indicate the minimum value that the current grid can display. This value is
also displayed in the left status bar of the screen.