Communications Line Flow, Dds Adapter - IBM 3274 51C Maintenance Information

UI
do
('
CCA/HPCA
A1-H2
U12
S10
502
U09
50S
S13
512
S04
UOS
U11
Ul0
U04
U13
~
Line
Active
Inactive
Open
W/O Clock
Not used
-Req to Send
Not used
Not used
-Test
.... -Data Set Rdy
I"
-Clear to Send ....
I"
.-Carrier Det
~
Not used
I"
.-Xmit Clk
....
...
-Rev Clk
~
Xmit Data
..
Rev Data
~
Ground
DC Voltage
DC Voltage
Range
OV Oto t<J.4V
+SV +2.4 to +S.SV
+1.SV +1 to +2V
Use 008 for ground reference
~ -
~ ·
....
·
--"
·
~ ·
....
·
802
002
804
803
80S
813
013
812
012
807
808
004
810
008
DDSA Card
A1-G2
G02
G09
JOS
J13
008
Figure 5-5. Communications Line Flow, DDS Adapter
I---
f - - -
I---
I---
Board
Conn - Y1
I
I
Cable
Conn
C1A11
-+-
009
I
I
1
A1E13
-1-
803
C1813
T
810
Cl E13
_1-
813
I
I
1
1
1
I
I
I
1
I
I
I
I
I
1
1
1
I
1
I/O Conn
~
'\,
/
'\,
/
"
/
-~
12
/
External
Cable
Xmit Data (DT)
Rcv Data (DT1)
Xmit Data (OR)
Rcv Data (DRll
External CSU Connector
Wrap Switch/Card
Cabl. (lS-Pin)
o
OP 0
I')
>
S
T
0-' 0 I )
>
3
0-- 0 I )
>
6
0-' 0 I )
>
4
I
I - -
81Ell
-L
008
~
J
i
u
7
I
Signal Ground
I
0 0
I ')
>
\
,
"
PN S267740
"-/
~"
I
DC Voltage
Line DC Voltage Range
Active
-
1.4 to 2.1
Inactive
-
o
to -0.14
-Measure voltage between pins 9 and 10,
and 12 and 13 (I/O Connl.
"
.........
" "
"
\
'\
\
\
\
\
\
"-
"-
\
/
/
/
/'
Use connector
(see Figure 5-31
/
PN 5718296 - 3m (10
ftl
PN 5718297 - 6m (20 ftl
PN 5718298 - 9m (30
ftl
PN 5718299 -12m (40
ftl
7 9 10 1112 13
0 0 0 0 0 0 . 0 • • • • •
0 0 0 0 0 0 0 0 0 0
a a
I/O Connector
(2S-Pin)
e
TEST
OPERATE
e
C5U Connector
(15-Pin)
3 4 . S 6 7 8
. 0 • • • • 0 0
0 0 0 0 0 0 0
91011121314 15
I
\
,