Paradyne Hotwire 7975, Руководство пользователя

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Cables and Pin Assignments
C-8
7975-A2-GB20-40 December 1998
EIA-530A-to-RS449 Cable Interface
The EIA-530A-to-RS449 adapter cable (Figure C-4) provides the RS449 interface
shown in Table C-4.
98-15902
1
2
14
3
16
15
12
17
9
4
19
5
13
20
8
10
6
7
21
18
23
24
11
25
22
1
4
22
6
24
5
23
8
26
7
25
9
27
12
13
31
11
19
14
10
20
17
35
18
29
30
SHIELD
TD-A
TD-B
RD-A
RD-B
TXC-A
TXC-B
RXC-A
RXC-B
RTS-A
RTS-B
CTS-A
CTS-B
DTR
RLSD-A
RLSD-B
DSR
SIG. COMMON
RL
LL
RCV. COMMON
TT-A
TT-B
TM
SIG. COMMON
SHIELD
TD-A
TD-B
RD-A
RD-B
TXC-A
TXC-B
RXC-A
RXC-B
RTS-A
RTS-B
CTS-A
CTS-B
DTR-A
RR-A
RR-B
DM-A
SIG. COMMON
RL
LL
RCV. COMMON
TT-A
TT-B
TM
DM-B
DTR-B
530
SIGNAL
DB25
PLUG DB37
SOCKET
449
SIGNAL
495-14323-01
Figure C-4. EIA-530A-to-RS449 Cable Pinouts (Feature Number 7900-F1-504)