This technique helps to isolate the DC bias settings of the two coupled circuits.
2.
The bias settings and various other parameters can be controlled via a standard I�C-interface.
3.
The 1000 and 700 series decks had tape bias settings for normal bias ( IEC TYPE I ) and high bias ( IEC TYPE II ).
4.
Different amplitudes of bias field are optimal for different types of tape, so most recorders offer a bias setting switch on the control panel, or, in the case of the compact audio cassette, may switch automatically according to cutouts on the cassette shell.