(No.22036)1-21
3.3 Mechanism section
3.4 Reference and standard value of confirmation matter
Item
Mesurement
condition
Mesurement
procedure
Standard
value
Adjustment
position
Confirmation of angle of head Tape speed confirmation
Test tape: VT703L (8kHz)
Measurement output terminal:
Speaker terminal
Test tape: VT712 (3kHz)
Measurement output terminal:
Speaker terminal or headphone terminal
1.Test tape VT703L (8kHz) is played.
2.It is adjusted that becomes an output
that both are the maximum on a forward
side and a reverse side with the screw
for the azimuth adjustment.
3.This adjustment is adjusted respectively
with the adjustment screw for the forward
side and the adjustment screw for a
reverse side.
Test tape VT712(3kHz) of the forward is
reproduced by finishing rolling , and
adjusted for the display of the frequency
counter to become 2,940-3,090Hz by
VR37.
The maximum output
2,940 ~ 3,090Hz
Only when the head is exchanged,
adjusts.
VR37
Item
Mesurement
condition
Mesurement
procedure
Standard
value
Adjustment
position
Forward/reverse tape speed difference Wow & flutter
Test tape: VT712 (3kHz)
Measurement output terminal: Speaker terminal or headphone terminal
Both reverse must forward/reproduce, and
the speed difference must be 6.0Hz or
less as for finish wrapping of test tape
VT712 (3kHz).
Both reverse must forward/reproduce,
and each wow & flutter must be 0.25%
(WRMS) or less as for begin to wrap of
test tape VT712 (3kHz).
6.0Hz or less
0.25% or less (WRMS)
VR31
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