IBM Internal Use Only
Appendix D.  Operational Patch Panel  1
The  100  position  operational  patch  panel  1  contains  the 
Basic Counter  Unit  input and logical functions for counters 
0-7.  (An  overall view  of the patch panel is shown in Figure 
26.)
9  10
Grid  Position
Hub Title 
(Nominal  delay 
in  nanoseconds)
A-K  (1,  2)
A (3,  4,  5)
A (6,  7)
A (8)
B  (3,  4,  5) 
B  (6,  7)
B (8)
C  (3,  4,  5) 
C  (6,  7)
C  (8)
D  (3,  4,  5) 
D  (7,  8)
Hub Title 
(Nominal  delay 
in  nanoseconds)
SIGN AL
CNT  TMG
D  (6) OR1  Hold
O 0  o
—  A
O  1  0
—  B
0  2 0
—  C
E  (3,  4,  5,  6)
OR2  In
0  3 0
—  D
E  (7,  8)
OR2  Out
0 4 0
—  E
True  (60  ns)
0  5 0
—  F
F(3)
LATCH 1  Set
0 6 0
—  G
F (4)
LATCH 1  Reset
0  7 0
—  H
A  B
o  o
—  J
+  1
C  D
o  o
—  K
F  (5,  6)
LATCH 1  Out 
True  (60  ns Set) 
(85 ns  Reset)
F (7,  8)
LATCH 1  Out 
Not True  (85  ns 
(110  ns  Reset)
G(3)
LATCH2 Set  ••
G  (4)
LATCH2  Reset
AND1  Out 
True  (60 ns)
AND1  Out 
Not True  (85 ns)
AND2  In
AND2  Out 
True  (60 ns)
AND2 Out 
Not True  (85  ns)
AND3  In
AN D3  Out 
True  (60  ns)
AN D3  Out 
Not  True  (85  ns)
OR1  In
OR1  Out 
True  (60 ns  OR 
Latch  Set)  (110 ns 
OR  Latch  Reset)
Description
20 positions —  provide the  Basic Counter 
Unit  input  signals  from  an external  source. 
Grid  positions  1  and  2  furnish a  two-way 
distribution  of the  same signal  to provide 
flexibility.
3  positions — provide  the  logical  input to 
AND1.  To perform combinatorial  logic, 
all  inputs  must  be  wired.
2 positions — provide  the True  function of 
AND1.
1  position — provides  the  Not True  function 
of AND1.
3 positions — provide  the  logical  input to 
AND2.  All  positions  must be wired.
2 positions — provide  the True function  of 
AND2.
1  position — provides  the  Not True function 
of AND2.
3 positions — provide the  logical  input to 
AND3.  All  positions  must be  wired.
2 positions — provide the  True function  of 
AND3.
1  position — provides  the  Not True  function 
of AN D3.
3 positions — provide  the  logical  input to 
OR1.  Any  True  input  position satisfies  the 
function.
2 positions — provide  the  True function  of 
O R].
G  (5,  6)
G  (7,  8)
H  (3)
J (3)
H  (6)
J  (6)
H  (4, 5) 
J  (4,  5) 
H  (7,  8) 
J (7,  8)
K  (3)
K (6)
K (4,  5) 
K (7,  8)
A-H  (9) 
A-H  (10)
J  (9,  10) 
K  (9,  10)
LATCH2  Out 
True  (60  ns Set)
(85 ns  Reset)
LATCH2  Out 
Not True  (85  ns  Set) 
(110 ns  Reset)
NOT1  In 
NOT2  In 
NOT3  In 
NOT4  In
NOT1  Out  (35  ns) 
NOT2  Out  (35  ns) 
NOT3  Out  (35  ns) 
NOT4  Out  (35  ns)
FAN OUT 1  In 
FANOUT2  In
FANOUT1 
Out  (60 ns) 
FANOUT2 
Out  (60  ns)
EVENT  COUNT
+ 1
A  B  C  D
Description
1  position  — when wired,  causes  OR 1  to operate 
as  a  latch and provides  the  reset  function  to OR1. 
A True  input allows  the  latch  to  remain set,
and a  Not True  input  resets  the  latch.
4  positions—  provide  the  logical  inputs  to 
OR2.  Any  True  input position satisfies  the 
function.
2  positions — provide  the  True function  of 
OR2.
1  position — provides  the  logical  set to 
LATCH 1.  A True  input sets the  latch.
1  position — provides a  reset function  to 
LATCH1.  A  Not  True  input allows  the latch 
to  remain set and a  True  input resets  the 
latch.
2 positions — provide  the True function  of 
LATCH 1.
2  positions — provide  the  Not True function 
of  LATCH 1.
1  position — provides  the  logical  set  to 
LATCH2.  A  True  input sets the  latch.
1  position — provides a  reset function  to 
LATCH2.  A  Not  True  input allows  the  latch 
to  remain set  and a  True  input resets the  latch.
2 positions — provide  the True function  of 
LATCH2.
2 positions — provide  the  Not True  function 
of  LATCH2.
4  positions — provide  invert functions  for in
coming  or patch  panel  generated signals.
Each  NOT block  is a single-legged  function.
8 positions — provide  the output functions 
for the four  NOT blocks.  Each  NOT  block 
has  two  output hubs.
2  positions  —  provide a  means  of distributing 
incoming  or patch  panel  generated signals.
The  logical  definition  of the signal  remains 
unchanged.
4 positions — provide  the output functions 
for the  FANOUT hubs.
8 positions — provide  the  input signals  to 
each  of the  eight counters  to count  the num
ber of occurrences of an event.
8 positions — provide the  input signals  to 
each  of the eight counters  to time  the dura
tion  of an  event.
4 positions — provide a  True  level  for AND1, 
2,  and  3  if all  inputs are  not wired  to 
logical  functions.  In  this way  unused AND 
inputs are wired  to satisfy  the  logical  func
tion.
36