IBM 2420 7 Manufacturer’s Information Brochure page 11

Magnetic tape unit
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Address Lines {
(Read Select
4,5,6,
Not Shown)
Tape Control
1
I
I
I
I
I
I
I
Connector
I
Connector
I/O
1'\
Connector A
\
Receptacle
I
Receptacle
l
~';l
'Its
A
603
Read Select "0"
--""
..J
77
1_
~ 77~>-
Read Select" 1"
1
B05
79>- -
- -
~
79!>-
Read Select "2"
I
B08
~
86>-1- -
-
~
86!>-
810
Read Select "3"
I
I
88>
-
-
-~
88!>-
Read Select "7"
1
D09,
-.l
108>
-
-
--~
10a!>-
( Data and Command
-,
> - - - - -
>
:
I
Lines (Common)
'-'
I
Tape Ctrl
Signal
I
Cable
Note:
All address lines terminated by terminator block at final drive
Broken lines indicate tape unit internal wiring.
Figure 3. Tape Unit Select Lines
~::;:
DS "3"
- - -
RDS "7"
DS';Q-
1---
'-./
Intercon-
necting
Cable or
Jumper
I
T'P'~~I
I
-.l
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
Connector
I
Connector
Connector
I
'
\
Receptacle
I
Receptacle \
\
R~~ePtacle
\
I
~
A
' B
A
tl
A
77>+-
~- ~
77:>-1-
~
. ~~g~::~:
77>-
r-L-
~
79>1- -
-
~
79:>--1-
Tape Units
RDS "1'
79>-
- - -
"A"
86>1- -
-
--~
86
1
>-
I-
~I
2_throu g h 6
RDS "2'
86>- - - - Terminator
~
106>1- -
-
~
1061>-1-
106>-
- - -
~
Signal
H-1'RDS "3'
:'
Block
108>
-
-
~
1081>-1- I--
J
Connectors
I
108>-
- - -
>-1- -
-
~
~,
>-
I'.
' - --
'-
/
t - - - - -
I
~
Interconnecting
Interconnecting
Cable or Jumper
Cable or Jumper

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