Band Code

The first letter specifies the general sampling rate and the response band of the instrument. 


 Band code            Band type                 Sample rate (Hz)        Corner period(sec)
     E             Extremely Short Period              >= 80                  < 10 sec
     S             Short Period                        >= 10 to < 80          < 10 sec
     H             High Broad Band                     >= 80                  >= 10 sec
     B             Broad Band                          >= 10 to < 80          >= 10 sec
     M             Mid Period                          > 1 to < 10 
     L             Long Period                          = 1 
     V             Very Long Period                     = 0.1 
     U             Ultra Long Period                    = 0.01
     R             Extremely Long Period                = 0.001
     A            Administrative
     W            Weather/Environmental
     X            Experimental

(The "A" code is reserved for
administrative functions such as miscellaneous state of health.)

