Sony BVH-2000, Руководство по эксплуатации и обслуживанию

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The DT system circuitry is com posed of the DT board inside the
board inside the upper drum, and it serves to control the DT
5-5-2. Principle of Arbitrary Playback
Among the informations required for optimum arbitrary
are the amount information, the slant error
information and the ~.....
"IT''--'rY
are added together, the wobbling signal is further superimposed
. Slant Compensation
The angle at which the head traces the surface of the tape during
1x
video track which has been recorded onto the tape.
However, when the back at a different
at which the head traces the recordmg
not coincide. As a result, a tracking error (slant error) is caused,
1""""("1111"11" iT
in
BVH-2000( U/C) IPS/PM
BVH-2180(U/C)/PS/PM
In the figure,
"A"
represents the head path with -Ix "13"
with STILL, with
+
1x and ""D" at
+
2.5x
of the head with respect to the tape speed relies on the tape
thus detected and the slant is compensated for so that the head
with the track
the DT head must have a
±
1/2 track
displacement. For instance, when the DT head is in the center
1/2
down in accordance with the playback speed.
track, the slant error must be compensated for until the tracing
of
DYNAMIC TRACKING SYSTEM
z
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i=
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a:
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o
u,
o
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a:
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LU
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