The Plot Application; Autoscal; Y-Min - HP 8153A Operating And Programming Manual

The Plot Application
In the Plot application the instrument takes the samples from a Stability or
Logging application and generates a plot of the samples. You can only plot
the samples from the most recent Stability or Logging or Manual Logging
application.
To make a plot of the samples you need a HPGL plotter. The plotter must
be attached as the only device to the HP-IB connector on the back of the
instrument. The device address of the plotter must be set to 5. To output to a
plotter the instrument HPIB State must be set to Ihlk Only (for instructions on
how to do this see "MODE" in Chapter 4).
When you select the Plot application the character field shows PLOT. This
application has several parameters. AUTOSCAL enables or disables automatic
scaling of the plot. Y_MIN sets the minimum value on the y-axis of the plot.
Y_MAX sets the maximum value on the y-axis of the plot. COMMENT is an eight
character message printed on the plot for identification.
Press
(Edit)
to look at, or edit the parameters. After pressing
(Edit),
you can select
parameters using (
Next
) and
(Prev).
While you are editing a parameter, the EDIT
operation-indicator lights.
AUTOSCAL
When you select this parameter, the left side character field shows the message
AUTOSCAL. The right side character field shows whether automatic scaling has
been enabled. If automatic scaling is enabled the instrument decides the best
limits for the y-axis by examining the samples.
■ You edit the automatic scaling enable using the Modify keys. It can have
the value OFF, to disable both automatic scaling, or ON, to enable automatic
scaling. The displayed value is always the setting for the scaling.
■ You can press
(Edit)
if you have finished editing, or you can press
(Next)
or (
Prev
)
to edit the other parameters.
The maximum and minimum values you choose for the graph, when autoscaling
is off, are subject to rounding. The final scaling is calculated to give eleven
divisions of the y-axis with standard spacings (that is, spaclngs that are multiples
on,2or 5).
Y_MIN
Local Control • Menu Mode 3-13