TTY MONITOR Command

The MONITOR command provides a live display of changing parameters within RCP8.

You can select several displays, all consisting of a line of information that is continually retyped on the same position of the TTY screen. For terminals operating at 2400 baud or faster, the effect is similar to that of a stationary format display where each value is kept up-to-date.

  1. Type user commands while the monitor display is running.

    The effect is as if the TTY cursor were located to the right of the text and the characters appeared in the usual manner. Since the entire status line is continually retyped, the implementation of these echoed characters is more complicated.

    When a valid command is input, the screen scrolls up a line and the status display continues to be printed on the following line, preserving a history of the commands that have been typed.

    tip

    A blank line is a useful command. This no-operation command allows the display to scroll in an upward motion. It also creates a sequential record of observations on the TTY screen, allowing the information to be written down at a later time. This important when calculating the initial measurements of the antenna dynamics as required for the position and velocity servos.

    Invalid commands erase all command characters. The TTY beeps, and no scrolling occurs.

    • Press DELETE or BACKSPACE to correct errors.
    • Press ENTER to terminate the input.
  2. When you have typed many commands, the initial heading eventually scrolls off the top of the screen. Enter the . command to automatically retype the heading line. The status display continues under it as before.

    Use the . command to prevent the misinterpretation of an unlabeled line of numerical information.

  3. To view alternate data displays within each monitor command, use the ALT command to toggle through the different displays, and the MAIN command to return to the default presentation.

    If you exit from a monitor while an alternate display was in use, you are automatically returned to that display upon reentering.

  4. To exit from the monitor command, type QUIT .

    You return to the Main menu.