Comtech EF Data CRS-200 REDUNDANCY SWITCH - Manual (Page 29)

CRS-200 COMTECH COMMUNICATIONS CORPORATION
CRS-200 REDUNDANCY SWITCH - OPERATIONS MANUAL PAGE 27
9 FRONT PANEL OPERATION
9.1 DESCRIPTION
The user can fully control and monitor the operation of the CRS-200 from the front panel,
using the keypad and display. Nested menus are used, that display all available options, and
prompt the user to carry out a required action.
The display has two lines each of 24 characters. On most menu screens, the user will observe
a flashing
solid block cursor, which blinks at a once-per-second rate. This indicates the
currently selected item, digit, or field. Where this solid block cursor would obscure the item
being edited (for example, a numeric field) the cursor will automatically change to an
underline cursor.
If the user were to display the same screen for weeks at a time, the display could become
‘burnt’ with this image. To prevent this, the unit has a ‘screen saver’ feature that will activate
after 1 hour. The top line of the display will show the Switch ID (which can be entered by
the user) and the bottom line will show the current status of the switch followed by ‘Press any
key....’. The message moves from right to left across the screen, then wraps around. Pressing
any key will restore the previous screen.
The keypad has six keys, the functions of which are described below:
RIGHT ARROW Moves the cursor to the right, when it is displayed
LEFT ARROW Moves the cursor to the left, when it is displayed
UP ARROW Used for editing the value at the current cursor position, if
appropriate. If this is a numeric field, this will increment the
value.
DOWN ARROW Used for editing the value at the current cursor position, if
appropriate. If this is a numeric field, this will decrement the
value.
ENTER (ENT) Used to accept an edited entry. Most menus prompt the user to
press this key, by displaying the text
(PRESS ENTER), (ENTER) or
(ENT). This results in the entry being accepted, and the user is
then returned to the previous menu.
CLEAR (CLR) Used to escape from the current operation and return to the
previous menu.
IMPORTANT NOTE: The keypad has an auto-repeat feature. If a key is held down for more
than 1 second, the key action will repeat, automatically, at the rate of 15 keystrokes per
second. This is particularly useful when editing numeric fields.