Hardware Reference
77
C613-03031-01 REV E
Figure 36: Pin wiring diagram for a V.35 DTE transition cable to an AMPLIMITE 50-way connector.
D50 SCSI-2 Male
(to router)
M34 Male
(to DCE)
Cable Shield
Insulating
Sheath
A
Shield
B
SIG G
P
SDA
(103)
S
SDB
Y
TCA
(114)
AA
TCB
R
RDA
(104)
T
RDB
V
RCA
(115)
X
RCB
C
RTS
(105)
D
CTS
(106)
F
DCD
(109)
H
DTR
(108)
E
DSR
(107)
L
LL
(141)
N
RL
(140)
Connect to backshell
1
→
TD
12
37
(
−
5V) 25
←
TC
10
35
←
RD
2
27
←
RC
8
33
→
RTS
14
←
CTS
3
←
CD
5
→
DTR
13
←
DSR
4
→
LL
16
→
RL
15
FGND
46
FSELB
47
Pin 26
Pin 50
Pin 1
Pin 25
D50 SCSI-2 Male — Pin View
Pin B
Pin D
Pin A
Pin C
M34 Male — Pin View
Ferrite
Cable
A
B
B
B
Network A
180R
180R
105R
200R
200R
Network B
300R
300R
Pin NN
Pin LL
Pin MM
Pin KK
Notes:
(1)
→
Output from router;
←
Input to router.
(2) Use shielded cable with twisted pairs,
e.g. UL2919 28AWG. Twisted pairing
must be 1-26, 2-27, 3-28, etc.
(3) M34 connector shells must be metal.
Connect braid to connector shells to
make a 360° connection.
(4) Standard cable length is
2.05m
±
0.05m.
(5) Ferrite must be fitted to cable no more
than 25mm from rear of D50 SCSI-2
backshell.
(6) Resistors are 1% tolerance.
(7) See accompanying text for information
about earth loop conditions.
(8) Cable version 2.0.
A50V35T
