42
TC-K615S-11 32-43
1
2
3
4
5
3
4
5
2
or
ou
o
ou
a)
b)
a)
b)
c)
a)
b)
√
√
Follow the procedure below to calibrate the
bias current and recording level.
1
Insert a cassette with the side to
be recorded facing outward.
2
Press CALIBRATION.
The peak level meters for adjusting the
bias and recording level appear in the
display window.
3
Press
r
, then
P
or
·
to activate
the recording test tone.
a) Playback level for an 8-kHz signal
b) Playback level for a 400-Hz signal
Notes
•You cannot monitor the sound during
the calibration operation.
•It takes 2 to 3 seconds for the test tone
level to stabilize.
4
Adjust BIAS until both meters
indicate equal playback levels.
a) A high reading on the upper meter
indicates a low bias current.
b) A low reading on the upper meter
indicates a high bias current.
c) An equal reading on both meters
indicates the proper bias current
condition.
5
Adjust REC LEVEL for calibration
until both meters reach the
recommended level.
a) Recommended level
b) The bias current is now properly
adjusted and the tape sensitivity
compensation has been set. Press
p
,
then press CALIBRATION to turn
the calibration function off (the
display returns to normal). Rewind
the tape and start the actual
recording.
Calibrating the Bias
Current and Recording
Level
§
EJECT
CALIBRATION
·
TYPE
L
H
REC CAL
9
9
TYPE
L
H
REC CAL
9
9
TYPE
L
H
REC CAL
9
9
BIAS
–
+
BIAS
–
+
TYPE
L
H
REC CAL
9
9
TYPE
L
H
REC CAL
9
9
∫
1
3
2
5
4
POWER
ON
→
BALANCE
L
R
•
CALIBRATION
COUNTER
RESET
MEMORY
PAUSE
P
REC MUTE
R
REC
r
p
0
·
)
0
AMS
)
MPX FILTER
ON
OFF
Ø
ø
REC LEVEL
0
1
2
3
4
5
6
7
8
9
10
•
•
•
•
•
•
•
•
•
•
OFF
DOLBY NR
B
C
•
•
•
MONITOR
• S
POWER
REC LEVEL
–
+
•
BIAS
–
+
•
HEADPHONES
§
EJECT
COUNTER
RESET
MEMORY
PAUSE
P
REC MUTE
R
REC
r
p
0
·
)
0
AMS
)
MPX F
ON
Ø
O
DOLB
POWER
§
EJE
√
REC LEVEL
–
+
PAUSE
P
REC
r
