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----{>o----<
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TTL 7438
I
OR EOUIVALENT
I
TAPE TRANSPORT
~I
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I~
+5V
20 FT MAX
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+5V
TAPE CONTROL
UN
IT
106-0331-500
: >---o<J---
110-0074
SFC
STOP
25IPS
RAMP
WRITE
DATA
INPUT
GAP
DETECT
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11
.375 IN.
0.1
USEC
l
!;:TYPICAL
FALSE
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-:
TYPICAL WAVEFORM OBSERVED
AT LINE TERMINATION
END OF TRANSMISSION LINE
TYPICAL TRANSMISSION DELAY
Figure
1-2.
Typical Interface Circuit ,
U
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30
MS
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WRITE
~
START
DELAY
WRITE STOP
~~
TYP
DELAY MIN
-4-.10
IN.
.3 IN.
~
. 35 TY P
.375
.375
~1~2
IN. TOTAL GAP-.
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PREAMBLE
OF FIFTEEN
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DAT A R E COR D
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p )
S T A
r~
[3
L E
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OFASINGLE
10'StONEl
ll, FI FTEEN
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D'S
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.
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30 NSEC
WRITE
START
DELAY
4-.10
IN.
-'-'1
1..--
APPROX
110-0015
12
CHARACTERS
Figure 1-3.
Write Motion Command Timing
1- 5
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