N/a n/a n/a n/a – Comtech EF Data SDM-9220 User Manual
Page 118
SDM-9220/9230 Hardware Installation Guide
6-8
Memotec Inc.
6.6 Serial Port Connector and Custom HD-26 Cable Set
Connectivity
on the next page provides the pinout and directionality of signals on the SDM-
9220/9230 serial port connectors and the custom HD-26 cable that connects to these
connectors.
NOTE:
For V.24 and V.35, refer to V.35 for the ITU circuit number
Descriptions within parentheses refer to X.21 only
The abbreviation n/a means not applicable.
The abbreviation n/s means not supported.
Main Board
Cable
V.35
TIA-232/V.24
TIA-530
TIA-449/V.36
X.21
Interface
HD-26
Female
HD-26 Male
ISO 2593
DB-25/ISO -
2110
DB-25
DB-37/ISO-
4902
DB-15/ISO-
4903
Connector
Net-
Name
Pin
Pin
DTE
Pin
DCE
Circuit
Pin
Signal
Pin
Signal
Pin
Signal
Pin
Signal
Pin
Signal
from
Description
TXDA
2
2
3
103
P
TXD
2
TXDA
2
TXDA
4
T[A]
2
DTE
Transmit Data
(Transmit on
wire)
TXDB
14
14
16
103
S
n/a
n/a
TXDB
14
TXDB
22
T[A]
9
DTE
RXDA
3
3
2
104
R
RXD
3
RXDA
3
RXDA
6
R[A]
4
DCE
Receive Data
(Receive on
wire)
RXDB
16
16
14
104
T
n/a
n/a
RXDB
16
RXDB
24
R[A]
11
DCE
TXCA
15
15
15
114
Y
TXC
15
TXCA
15
TXCA
5
S[A]
6
DCE
Transmit Clock
(Signal element
timing)
TXCB
12
12
12
114
AA
n/a
n/a
TXCB
12
TXCB
23
S[A]
13
DCE
RXCA
17
17
24
115
V
RXC
17
RXCA
17
RXCA
8
B[A]
7
DCE
Receive Clock
(Signal ele-
ment timing)
RXCB
9
9
11
115
X
n/a
n/a
RXCB
9
RXCB
26
B[B]
14
DCE
XTXCA
24
24
17
113
U
XTXC
24
XTXCA 24
XTXCA
17
n/a
n/a
DTE
External
Transmit Clock
XTXCB
11
11
9
113
W
n/a
n/a
XTXCB 11
XTXCB
35
n/a
n/a
DTE
DTRA
20
20
6
108
H
DTR
20
DTRA
20
DTRA
12
C[A]
3
DTE
Data Terminal
Ready (Control
on wire)
DTRB
23
23
22
n/a
n/a n/a
n/a
DTRB
23
DTRB
30
C[B]
10
DTE
Table 6-1: Serial connector and NetPerformer custom HD-26 cable set