Agilent Technologies 4294A, Руководство по программированию

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Chapter 3 41
Setting Measurement Conditions
Setting the On-screen Arrangement
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Conditions
Setting a display scale
If both a data trace and a memory trace are concurrently displayed, you can separately set
different scales to these traces. Use the commands given below to specify whether to use
the same scale for both data and memory traces or to specify which trace to set a scale to
when not using the same scale.
• “SCAC” on page 422
• “SCAF” on page 422
NOTE
The commands above are closely related to displaying a trace, that is, there can be
instances in which executing these commands for a purpose other than properly setting a
display trace causes an error; for example, changing the settings of the trace to display also
changes other items in a linked manner. Therefore, you need to carefully plan the sequence
of executing commands in writing a program.
Three ways of setting a display scale are available depending on the display format to be
set with the command given below. Accordingly, you need to set a display format before
setting a display scale.
• “FMT” on page 315
NOTE
The display format you can choose varies depending on the measurement parameters.
NOTE
Settings for the display scale and display format are set for each parameter. That is, the
settings are determined by the parameters selected in the active trace at the time the settings
are made, and are not the settings for trace A or trace B.
The following sections describe the method used for each type of format.
Linear/log Y-axis format
Since the display scale of the X-axis depends on the sweep settings, only set the display
scale of the Y-axis (the axis showing the measurement parameter). To set the scale, choose
the scale parameter by using one of the commands given below.
• “SCAL” on page 423
• “REFP” on page 408
• “REFV” on page 409
• “TOPV” on page 456
• “BOTV” on page 273
In the case of a log Y-axis, however, you can only make the settings with the “TOPV” and
“BOTV” commands. The relations between the commands and the scale parameters are
shown in Figure 3-1.