6.2.            477

         (  -
),      .     -
     El, E2      
 2,048 /, 8,488 /  34,368 /.  -
     ANSI.

        -
 ,       
     DSn (Digital Signal n).  . 6.2   
      .

 6.2.   

		 ()
 	  	   	, /	  	   	, /
DS-0	1	1	64 /	1	1	64 /
DS-1	24	24	1,544	30	30	2,048
DS-2	96	4	6,312	120	4	8,488
DS-3	672	7	44,736	480	4	34,368
DS-4	4032	6	274,176	1920	4	139,264

      1/1  /.

 1    24-   
1,544 /  ,    .    -
      ,   24-  -
   .   1 (  
   ,    1,544 /)  
   ,       -
   .  1,     -
 2         .
        -
  ,      . 
   ,      -
 .     -
 24  64 = 1,536 /,   8 /   .

  1         
       .

     1  24   , 
      ( -
)   .     1   8- 
  ,      -
  56 / (      
,     ,   ,
    . .).       
      .  ,   -