Allied Telesis AR Series Hardware Reference Manual page 67

Hardware Reference
Figure 32: Pin wiring diagram for a V.35 DTE transition cable to an AMPLIMITE 50-way connector.
D50 SCSI-2 Male
(to router)
Connect to backshell
→
←
←
←
→
←
←
→
←
→
→
180R
180R
Pin 1
Pin 26
D50 SCSI-2 Male — Pin View
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.
C613-03031-01 REV C
Cable Shield
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
200R
105R
Network A
200R
Pin 25
Ferrite
Pin 50
M34 Male
(to DCE)
Insulating
Sheath
A Shield
B SIG G
P
A
S
Y
B
AA
R
B
T
V
B
X
C
D
F
H
E
L
N
Network B
300R 300R
Pin C
Pin A
Cable
Pin D
Pin B
M34 Male — Pin View
(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.
SDA (103)
SDB
TCA (114)
TCB
RDA (104)
RDB
RCA (115)
RCB
RTS (105)
CTS (106)
DCD (109)
DTR (108)
DSR (107)
LL (141)
RL (140)
Pin KK
Pin MM
Pin LL
Pin NN
A50V35T
67