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Teac MT-20D-IO - Page 83

Teac MT-20D-IO
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"SCSI"
(28)
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
during
measurement
of
the
read
signal
(TP3,
7,
8
on
PCBA
Drive
Control),
etc.
Non
detection
During
detection
of
data
block
of
data
block
\
I
TPl
~r-----~----.U'-------
0.17
ms
II
5.76
ms
.1
Non
detection
of
data
block
(a)
"90
ips"
During
detection
of
data
block
TP1
~'------_/!....------'U'----
o .
51
ms II
17
•
28
ms
.1
(b)
"30
ips"
Fig.
350 Example
of
waveform
at
TPI
(29)
TP2
(data
sampling
clock)
PCBA
Interface
Control
Test
point
for
measuring
the
data
sampling
clock
signal.
TP2
is
used
to
check
the
operation
of
the
write/read
system.
-
371
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