1257 User Manual
Using the Front Panel Controls 3-6
EADS North America Defense
Test and Services, Inc.
©
2001
In the above example, the user starts at the top of the menu
hierarchy and proceeds downward through the following levels:
Level
1: Menu type: OPERATIONS, PATH CONTROL,
SETTINGS, STORE / RECALL, SYSTEM (This example
used OPERATIONS).
Level 2: Drawer type: Informational only as it cannot be selected
or changed (other than by installing a different type of
drawer).
Level 3: Channel number: Selects the relay channel to control.
Level 4: Status: Shows whether the relay is open or closed, and
lets the user change the status.
The above example illustrates that the user interface has a
hierarchical menu structure. The top line shows the top level of the
menu. The second, third, and fourth lines show successively lower
levels of the hierarchy.
Some menus do not use all four lines of the display. When a line is
unused, or contains nothing that the user can change, the LED in
the corresponding key is not illuminated. Pressing such a key has
no effect. However, when the LED in a key is illuminated, that key
represents a line that can be edited. In the above example, the
second line of the display which details the drawer type and model
number is informational only. Consequently, this line would not
have the key LED illuminated.
This menu system is easy to use because the display shows all
levels simultaneously. In addition, the user may instantly go to a
higher level by simply pressing the corresponding key.
The Five Menus
At the top of the menu hierarchy, on the first display line, are five
menus for selecting the general function categories. These menus,
and the functions they include, are:
•
Operations:
Open and close channels on the drawer.
•
Path Control:
Open and close user-selected pathnames
stored in non-volatile memory (paths must be defined and
stored through the remote user-interface prior to accessing
them through the display).
•
Settings:
Set menu preferences such as IEEE-488 address,
RS-232 baud rate, and display brightness.
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