Sony TC-WR545 - Manual (Page 14)

Automatic Bias Current and Recording Level
Calibration (TC-WR545 Only)
Though the Automatic Tape Selection (ATS) system in your unit automatically sets the
equalization characteristics, bias current and recording level to suit the magnetic properties of
each tape type, doing the automatic calibration procedure below for the bias current and
recording level may allow you to get even better recording results, especially in conjunction
with the Dolby NR system.
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Press AUTO CAL.
The CAL indicator on the display panel lights up,
CAL appears on the counter and the unit enters
recording pause mode.
AUTO CAL
r- o I
CAL REC II ! _ / < ! _
Press 1> or O to select the side to be
recorded.
To select the front side, press .
To select the reverse side, press O .
If there is no response when you press either
button, that side is record protected and cannot
be used for recording.
See "If the cassette is record protected" on next
page.
Press II.
The unit fastwinds a short distance, the counter
begins counting down from 9 to 0 and the unit
performs recording, rewinding and playback as
part of the cahbration process.
II
] ^
R L 3
PAUSE
After automatic calibration is completed, the tape
rewinds to the original position, the counter
returns to normal and the unit stops.
Continue with step 3 on pages 12 to
record a source.
To cancel the automatic calibration function
Press the ■ button.
Notes on recaiibration
As long as the unit stays on, all calibration data are saved
and applied by the system whenever you insert a cassette of
the same type (I, II or IV).
The CAL indicator lights up when existing calibration data
are applied. However, since cassettes of the same type also
vary in their characteristics, we recommend that you repeat
the automatic calibration procedure each time you insert a
new cassette.
To recalibrate:
1 Insert the cassette.
The CAL indicator lights up.
2 Press AUTO CAL.
The CAL indicator turns off and the unit recalls the
existing calibration data for that tape type.
3 Continue from step 1 of the automatic calibration
procedure.
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