Specifications

Hardware Reference 25
C613-03023-00 REV P
Figure 12: Pin wiring diagram for an RS-232 DTE transition cable
D50 SCSI-2 Male
(to device)
D25 Male
(to DCE)
Cable Shield
Insulating
Sheath
Notes:
(1) → Output from device; ← Input to device.
(2) Use shielded cable with twisted pairs, e.g. UL2789 28AWG. Twisted pairing must be
1-26, 2-27, 3-28, etc.
(3) D25 connector shells to be metallised and fully shielded 360°.
(4) Standard cable length is 2.05m ± 0.05m.
(5) Ferrite to be fitted to cable 31mm ± 3mm from rear of D50 SCSI-2 backshell.
(6) Applies to cable version 4.0 or later.
1 Shield
2 TD (103)
3 RD (104)
4 RTS (105)
5 CTS (106)
6 DSR (107)
7 SG (102)
8 CD (109)
15 TC (114)
17 RC (115)
18 LL (141)
20 DTR (108)
21 RL (140)
Connect to backshell
→ TD 12
← RD 2
→ RTS 14
← CTS 3
← DSR 4
SG 1
← CD 5
← TC 10
← RC 8
→ LL 16
→ DTR 13
→ RL 15
FGND 21
FSELA 22
FGND 46
FSELB 47
Pin 26 Pin 50
Pin 1 Pin 25
D50 SCSI-2 Male — Pin View
Pin 14 Pin 25
D25 Male — Pin View
Ferrite
Cable
A50R232T
Pin 1 Pin 13