DEN specification - Key = '003B'

DALDEN specifies the magnetic tape density. When you code this key, # and LEN must be one, and PARM contains one of the following values:
X'03'
200 bpi 7-track (0)
X'43'
556 bpi 7-track (1)
X'83'
800 bpi 7-track, 800 bpi 9 - track (2)
X'C3'
1600 bpi 9-track (3)
X'D3'
6250 bpi 9-track (4)
Example: To specify 1600 bpi 9 - track, code:
KEY    ##     LEN    PARM
003B   0001   0001   C3