     ^rSelect 5 Tone System^r
     
     Used  to  select  a  tone system for all encoder / decoder operations.
     This option cannot be deleted, a tone system must be selected  at  all
     times.  The  currently  selected  tone  system is displayed in inverse
     video. 

     An additional data  field  allows  programming  of  the  encoder  code
     duration  of the encoded Select 5 tones. The default for this field is
     the system tone duration as defined for the selected tone system.  The
     range  for  the tone duration is 5-7500 msec in one msec steps.  Note,
     that the decoder timing is not affected. 

     The default tone system is ZVEI. 


     Available Tone systems:
     
          ZVEI         (default)
          modified ZVEI 
          french modified ZVEI
          CCIR
          70ms CCIR
          EEA








       TONE  | std ZVEI| mod ZVEI| fre ZVEI| std CCIR|70ms CCIR|   EEA  
     --------+---------+---------+---------+---------+---------+---------
        0    | 2400 Hz | 2200 Hz | 2400 Hz | 1981 Hz | 1981 Hz |  1981 Hz
        1    | 1060 Hz |  970 Hz | 1060 Hz | 1124 Hz | 1124 Hz |  1124 Hz
        2    | 1160 Hz | 1060 Hz | 1160 Hz | 1197 Hz | 1197 Hz |  1197 Hz
        3    | 1270 Hz | 1160 Hz | 1270 Hz | 1275 Hz | 1275 Hz |  1275 Hz
        4    | 1400 Hz | 1270 Hz | 1400 Hz | 1358 Hz | 1358 Hz |  1358 Hz
        5    | 1530 Hz | 1400 Hz | 1530 Hz | 1446 Hz | 1446 Hz |  1446 Hz
        6    | 1670 Hz | 1530 Hz | 1670 Hz | 1540 Hz | 1540 Hz |  1540 Hz
        7    | 1830 Hz | 1670 Hz | 1830 Hz | 1640 Hz | 1640 Hz |  1640 Hz
        8    | 2000 Hz | 1830 Hz | 2000 Hz | 1747 Hz | 1747 Hz |  1747 Hz
        9    | 2200 Hz | 2000 Hz | 2200 Hz | 1860 Hz | 1860 Hz |  1860 Hz
        R    | 2600 Hz | 2400 Hz |  970 Hz | 2110 Hz | 2110 Hz |  2110 Hz
        G (A)| 2800 Hz |  885 Hz |  885 Hz | 2400 Hz | 2400 Hz |  1055 Hz
     --------+---------+---------+---------+---------+---------+---------
     DURATION|   70 ms |   70 ms |   70 ms |  100 ms |   70 ms |    40 ms
                         * * *  END OF HELP TEXT  * * *
