45 SNA5000A Vector Network Analyzer User Manual
Press
Scale
, Use the knob or arrow keys to focus on the reference level and reference
position parameter items under the
Scale
menu bar. Press
ENTER
or the knob to enter the
parameter editing state, then move the cursor to the specified position by the up and down
arrow keys or the knob, and press
ENTER
or the knob to select the current option.
Scale
: Sets the vertical indexing value of the rectangular coordinate display format. In polar
coordinates and Smith chart formats, the scale sets the value of the outer perimeter.
Range: 0.001 dB/div to 1000 dB/div.
Automatic scaling
: Automatically sets the vertical indexing value and reference value to fit
the working data trace in the screen grid area. The excitation value and
reference position are not affected. The vector network analyzer
determines the minimum possible scaling factor that will allow all display
data to appear on the 80% vertical grid. The selected reference values
center the trace on the screen.
All autoscaling:
Automatically scales all data traces in the working window to fit vertically into
the grid area of the screen.
Reference level:
Sets the value of the guide in rectangular format. Range: -1000 dB to 1000
dB. In polar coordinates and Smith's circle chart formats, the reference level
does not apply.
Reference position:
Sets the position of the guide in Rectangular coordinate format. Zero is
the bottom line and 10 is the top line. The default position is 5 (middle of
the screen). Reference positions do not apply in polar coordinates and
Smith chart formats.
2.7.2
Scaling coupling
When “Scale Coupling“ is enabled, tracks of the same format will have the same “Scale“,
“Reference Level“, and “Reference Position“. You can choose to couple the scales for traces
in the same window, for all traces in all Windows, or uncouple them.
Operating steps:
Press
Scale
, use the knob or arrow keys to focus on the
Scale
→Scale Coupling
parameter item. Press
ENTER
or Knob to enter the editing state, select
Off
/
Window
/
All
, then
move the cursor to the specified position by up and down arrow keys or Knob, press
ENTER
or Knob to select the current option
Note: Traces of the same format have the same scale, reference level, and reference position.
Coupling Method:
Close:
No coupling. Each trace is scaled individually. This is the default setting.
Window:
All traces of the same format in each selected window share the same scale settings
All:
Coupled between all selected windows, all traces of the same format in all selected
Summary of Contents for SNA5000A Series
Page 2: ......
