Softkey Interface; Navigation - Symmetricom 5120A Operation And Maintenance Manual

3.1 Softkey Interface

The column labeled "softkeys" in
(Figure 1 on page 4 shows them side by side). The labels indicate the effect pressing the
corresponding button will have.
The function of a softkey changes depending on previous selections including navigation and
settings. Highlighting is used to represent state information, to invite navigation into a submenu, or
to return to a previous menu. The softkey interface can be used to configure all aspects of the test
set, except the User Specified
A USB mouse can be used to press and release softkeys. To execute the function currently
assigned to a softkey, click on it. Some softkeys repeatedly execute their function while held
down. These keys are noted as they are described in this manual. Pressing (and holding) the mouse
button on a softkey repeatedly executes its function as well. Using the mouse to interact through
the softkey interface is also useful because it minimizes physical disturbance to the test set.
Physical disturbance can affect the accuracy of sensitive measurements.

3.1.1 Navigation

Starting with the phase noise plot as shown in
would:
Display the Allan deviation plot.
Change the softkey's caption to Config Allan Deviation.
Highlight the softkey to show that Allan deviation is the active mode.
Pressing the same button at this time will enter a softkey menu (center in the figure below) that
allows for scale and test mask configuration, τ
format. This softkey menu has a highlighted Return softkey to return to the previous menu.
Figure 4 shows the flow from the Allan deviation plot, to its table format, and back to the plot.
.
The second softkey now configures the Allan deviation
plot. It was just used to select the Allan deviation plot.
12
Figure 3 mirrors the set of buttons on the test set front panel
Title. It is described in detail in the sections that follow.
Figure 3, pressing the Allan Deviation Plot button
selection, or viewing the Allan deviation in table
0
The top softkey now reselects the phase noise plot. Its
original function was to configure the phase noise plot.
Figure 4: Softkey Navigation
3: The Screen and Basic Concepts