Optical Backscatter Reflectometer 4600 19
User Guide
(if purchased) the fields in this area change. (See “Distributed Sensing
Measurements” on page 48.)
3 The Display Options area allows the user to control which traces are
being displayed, to move data within local memory, and to view the
Details of each measurement loaded into memory. This will be further
explained under “Displaying Multiple Traces” on page 59.
4 A System Status Bar message will light up if saturation or overheating
is detected. They are shown in the normal, “off” status in Figure 3-1
above. If one of these lights, see “System Status Bar Messages” on
page 203.
5 The two Graph areas may contain plots of test data, as described in the
next section. The upper graph displays time domain data, and the lower
displays either time domain or frequency domain data. The pull-down
menu at the top of each graph allows the user to select which parameter
is displayed. Buttons to the lower left on each graph adjust plot axes,
cursors, legend, and zoom.
6 The Menu Bar contains additional commands for loading and saving
data files, printing, performing reference scans, and for setting various
measurement and display options. (See “The Menu Bar” on page 27.)
System Control
The System Control area of the main window contains fields and menus that control
the OBR instrument and set test parameters, as shown on the left. If Extended Mode
was purchased, the System Control will have one of two appearances, depending
on the Options > Distance Range setting.
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