JVC TD-V662 User Manual

CALIBRATION OPERATION
There are various types of cassette tapes, and their character
istics differ slightly even when they are of the same type.
Generally, the bias current and equalization characteristics
suitable for the type of tape being used can be obtained by the
Auto Tape Select system.
However, to optimize the response of the tape to be used, it is
better to adjust the recording bias so that distortion is minimized
and the frequency characteristics are as flat as possible.
When recording using Dolby NR, the recording and playback
levels should be matched to achive the best Dolby NR effect.
Compensate for
the tape sensitivity
within +3 dB.
LEVEL — CALIBRATION — BIAS
-3 (dB)+3 80 (%) 120
Adjust the
bias current
within ±20%.
How to adjust
Adjust the bias current to compensate for the tape sensitivity
while recording the test tone.
1. Press the ► button while pressing the CALIBRATION button.
The meter changes to calibration mode and the test tone is
recorded.
2. Adjust the BIAS control so that the upper and lower meters
show the same level.
/—^— Meter for the
p / I calibration
LEVEL CZ) CZ] IZD CZZ] izn niZZIiZZllZZIiZD □ -
Adjust to give
the same level
on the upper and
lower meters.
3. Adjust the LEVEL control that the upper and lower meters
meat" A".
4. Press the ■ (stop) button to stop the tape.
The level meter works when the ■ (stop) button is pressed.
This is not a malfunction.
The optimum bias is set and the tape sensitivity is compensated
for by the above procedures. To start recording, rewind the tape
and erase the test tone.(See the following "Erasing".)
When the bias is low (80% position) or high (120% position), the
frequency response is as shown in the following diagram.
Bias is low
(distortion is increased
V and high frequencies
N \ are emphasized)
Output level (dB)
Bias is high
(distortion is decreased
and high frequencies
are attenuated)
Notes:
• When using Type IV (metal) tape, the change in the frequency
characteristic when the bias control is adjusted is small com
pared with the change when using Type I (normal)- or Type II
(high position) tape. The optimum bias may not be obtained
within adjusting range (+20%) of this deck due to tape char
acteristic difference.
• During calibration, monitoring is impossible regardless of
whether the monitor mode is set to "tape" or "source".
Erasing
When recording on a prerecorded tape, the previous recording
is automatically erased and only the new program is recorded
on the tape.
To erase a tape witfiout making a new recording...
Follow the section "RECORDING" but in step @, set the INPUT
LEVEL control to MIN.
AUTOMATIC RECORD MUTING
This facility is used to eliminate undesired sections and leave an
appropriate non-recorded section.
A. To leave non-recorded sections of about 4-5 seconds
automatically
O When the undesired section comes during recording, press
the O REG/REG MUTE button and release it.
e The REG indicator flashes and a non-recorded section is
made during record muting operation.
About 4-5 seconds later, the tape automatically stops, and
the unit enters the record-pause mode.
0 Press the ► (play) button to restart recording.
B. To leave non-recorded sections of more than 4-5 seconds
O Keep the O REG/REG MUTE button pressed continuously
as long as you want to make a non-recorded section. By
releasing the finger from the button after the above operation,
the unit enters the record-pause mode.
0 Press the ► (play) button to restart recording.
C. To leave non-recorded section of less than 4 seconds
• When the undesired section comes during recording....
After the O REG/REG MUTE button is pressed, press the ►
(play) button before the unit enters the pause mode to start
recording again, or press the II PAUSE button to enter the
record-pause mode.
• The PEAK LEVEL INDIGATOR lights even during record
muting according to the input level which can be heard from
the speakers or headphones so that recording can be
resumed at the exact point on the tape.
MONITOR BUTTON
Since the unit is a three-head deck with separate record, play and
erase heads, the sound from the source can easily be compared
with that recorded on the tape by switching this button.
A. Source monitoring
Press the MONITOR button to indicate "SOURGE" in the
display to monitor the sound from the source. The PEAK
LEVEL METER and DIGITAL PEAK indicators show the
level of the input signal; adjust the recording level while
monitoring the source.

JVC TD-V662 Specifications

General

Brand	JVC
Model	TD-V662
Category	Cassette Player
Language	English