13
Frequency Conversion
– conversion state, LO frequencies and conversion rule, displayed
stimulus selection.
Limiting
– show / hide limit lines, tabular representation of limit lines with custom drawing
ability.
Service
– custom hardware settings (optional).
Table 3-1 Control panel items
Item
Image
Description
Button
Simple button
Switch
ON / OFF switch (similar to classical
checkbox
)
Dropdown list
Button with popup –styled list (acts like
classical
combo
)
Numeric edit
Numeric edit field with on-screen
keyboard and custom increment.
Use unit buttons to simplify
input procedure
Right-click on the numeric field
calls popup menu with
increment settings and memory
buffer operations, recent values
list
Scrolling value is available when
focused
Some controls have value
presets (like “
Points”
, “
IF Filter”
,
etc.) to speed up input
procedure
3.2
Measurement Sequence
This section describes the basic measurement procedure using
R4213/R4225
and presents an example
of the S-parameters measurement of arbitrary bandpass filter. Follow next few instructions below.
3.2.1
Defining measurement parameters
Reset user settings using menu
Profile
->
Restore Default Settings
Select data format for each S-parameter (logarithmic magnitude by default) by selecting trace(-
s) in the list and modifying format in
Scale
control panel
Specify frequency range and the number of measurement points in
Frequency
control panel
Adjust the power level in
Power
control panel
Select the IF bandwidth in
Measurement
control panel
Run sweep by using
tool button or
System
->
Measurement
menu item; it’s required to
heat-up instrument for 30 minutes before calibration or measurements
