Homer Hot Measurement and Tuning System - S-TEAM Lab

Rectangular Displays
Xmin, Xmax
Selectable lower and upper bounds of the x-axis. The x-axis is labeled Points and represents the measurement point
serial number.
Points
Points is a non-editable information field showing the number of currently selected trace points (points per sweep).
Points per sweep can be defined by Homer|Points per Sweep or Pts button.
Automatic
If the Automatic checkbox is checked, the span of x-axis is given by points per sweep (N p ). The lower bound is
zero, the upper bound is equal to (N p – 1). The Xmin, Xmax edits are disabled and their settings ignored. If the box
is unchecked, the span of x-axis is given by the Xmin, Xmax values.
The x-axis division is always automatic.
Ymin, Ymax
Selectable lower and upper bounds of the y-axis. The values will be accepted after you click OK button. The values
will be ignored if you click Autoscale, Default or Cancel button.
Integral
When the Integral checkbox is checked, the y-axis span will be an integral multiple of the axis division. The span
encompasses the complete interval Ymin to Ymax. The chart will have neat appearance but there may be up to a
division-wide unused portions at its bottom and top.
When the Integral box is unchecked, the chart y-axis bounds will be equal to Ymin, Ymax, or as returned by the
autoscaling procedure. The bounds will not be “neat” numbers but the chart span will be used in a more efficient
way.
The y-axis division is always automatic.
Circular Displays
Polar Display
With Polar display, only the Polar radius (POLAR R) field is enabled. Here you can enter the desired radius of the
polar chart. The choice will be accepted after clicking OK button.
Smith Charts, Oven Display
For these types of displays, only the Smith radius (SMITH R) radio group is enabled. Here you can select from
available polar radii one which best accommodates the measured data. Confirm by OK button.
Buttons
OK
Accept the settings and close the dialog.
Auto
Autoscaling of the y-axis based on the latest measured data.
Rectangular displays: After clicking Auto button, minimum and maximum y-coordinates of all simultaneously
displayed traces are computed. Using these values, y-axis bounds of the chart are automatically set to
accommodate all the traces. The Integral checkbox status is also considered. The values in the Ymin, Ymax
fields are modified accordingly.
User's Handbook Homer Hot Measurement and Tuning System Software Operation 37