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Teac MT-20D-IO - Page 78

Teac MT-20D-IO
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"D/CAS"
(20)
TPI
(block
detect)
PCBA
Interface
Control
Test
point
for
measuring
the
block
detect
signal.
Since
this
signal
is
synchronized
with
the
data
block.
it
can
be
used
as
a
trigger
signal
during
measurement
of
the
read
signal
(TP3.
7.
8
on
PCBA
Drive
Control).
etc.
Non
detection
During
detection
of
data
block
of
data
block
TPI
4Jr--------'-I---,U..-----
0.17
ms
II
5.76
ms
.1
(a)
"90
ips"
Non
detection
During
detection
of
data
block
of
data
block
TPI
--lJr-----'-/-----,U~-
0.51
ms
.11
17.28
ms
.1
(b)
"30
ips"
Fig.
343
Example
of
waveform
at
TPI
(21)
TP2
(data
sampling
clock)
PCBA
Interface
Control
Test
point
for
measuring
the
data
sampling
block
signal.
TP2
is
used
to
che£k
the
operation
of
the
write/read
system.
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