RC4500 Antenna Controller Chapter 2 Basic Operation
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2.1.2 Data Entry
Many RC4500 screens request some type of user input. This section provides instructions on the entry of
various types of data.
Selection From List ( <0-9>SELECT )
When the user is prompted to select an action from a displayed list, pressing the numbered key
corresponding to the desired action will initiate the action.
Scrolling Through List ( <SCR>THRU LIST )
When the user is prompted to scroll through a list of items, pressing the Scroll Up/Yes key will move
forward through the list and pressing the Scroll Dn/No key will move backward through the list. Pressing
the Enter key when the desired item from the list is displayed will select the item.
Alphanumeric Entry ( NAME:SATCOM K2 )
To manually enter the name of a satellite or location, the user scrolls through the list of characters (A-Z, 0-
9 and blank). To scroll through the list of characters, use the 2/UP/N key to scroll forward and use the
8/DN/S key to scroll backward. To accept a character and move the cursor to the next character entry,
use the 6/CW/W key to move to the next character to the right and use the 4/CCW/E key to move to the
previous character to the left. Use the ENTER key to accept the complete entry of the name and move to
the next field.
Note: scrolling through the alphanumeric characters is
not
After selecting one character, the flashing cursor is placed in the next space awaiting character selection.
To complete the entry of the alphanumeric string, press the Enter key. The user may press the BKSP key
to backup through the string while deleting each character. The 4/CCW/E key will allow the user to
backup through the string without deleting each character.
implemented via the Scroll Up/Yes or Scroll
Dn/No keys since these keys will typically be used to move forward or backward through other fields from
the field requiring alphanumeric input.
Integer Data Entry (SIZE: 240)
To enter whole numbers, use the 0-9 keys to enter the desired numeric string followed by the Enter key.
Note that the data field will initially show the current value for the item until numeric entry is started. To
terminate the entry without changing the value, the user may use the Scroll Up/Yes or Scroll Dn/No key.
The BKSP key may be used to move back in the string to correct the input. When the input has been
backed up past the first entry, the current value of the item will again be displayed. Pressing the Enter key
with the current value displayed will also result in no update.
Floating Point Data Entry (HEADING:180.0)
Entering floating point values is very similar to entering integer values except that the decimal point is
inserted by using the (decimal pt.) Stop key.
Degree/Minute/Second Latitude/Longitude Entry (TRUCK LAT:38°56’27N)
Entering Latitude or Longitude is similar to entering a floating point value but the decimal point is used to
place the degree and minute sign delimiters. Following the degree sign, only values from 0 to 59 are valid
since they represent minutes and seconds. After entering the numeric value of latitude or longitude, the
user is prompted to supply W(est) or E(ast) for longitude or N(orth) or S(outh) for latitude.
Degree/Decimal Longitude Entry (SAT LON:179.0E)
This entry is similar to the degree/minute entry but allows decimal fractions of degrees. This format will be
used for satellite longitude entry where the degree/minute format is standard for vehicle position entry.
Time/Date
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