8
2.3.1
Display Menu
The 841-P-USB
Display
menu includes two options that allow you to send
serial commands and check the status of the 841-P-USB (see Figure 2-1).
You can switch from one option to the other without interfering with the
measurement taking process.
2.3.1.1 Histogram
Figure 2.2 Histogram
Right-click on the histogram to set the time period to view (Set X Axis…),
reset the display or select a scale. Note that the Auto-Scale on the histogram
starts from the lowest scale and only does scale-ups. This is made to select
the best scale for the user without frequent scale oscillations.
2.3.1.2 Tuning Needle
Figure 2.3 Tuning Needle (2 options)
Right-click on the Tuning Needle to select a scale. The autoscale (default) is
useful when the measurement variations are small, because it will zoom on
