This appendix describes the connectors that aid in testing communication ports.
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Connectors aid in testing communications ports. The connectors take the form of either a single plug or a port-to-port cable with some communications connections shorted (looped-back).
The following table depicts the pin assignments for most plugs and cables that may be used when testing a system.
Signal Description
EIA
CCITT #
RS-449 A
RS-449 B
DIN 8
8-pin round
DB9
9-pin
DB25
25-pin
Direction
Alpha ID
Chassis/Frame Ground
AA
101
1
NC*
NC*
NC*
1
None
AA
Transmit Data
(TxDa)
BA
103
4
22
3
3
2
Output
BA
Receive Data
(RxDa)
BB
104
6
24
5
2
3
Input
BB
Request To Send
(RTSa)
CA
105
7
25
6
7
4
Output
CA
Clear To Send
(CTSa)
CB
106
9
27
2
8
5
Input
CB
Data Set Ready
(DSRa)
CC
107
11
29
NC*
6
6
Input/
output
CC
Signal Ground
(SG)
AB
102
19
NC*
4
5
7
None
AB
Data Carrier Detect
(DCDa)
CF
109
13
31
7
1
8
Input
CF
Transmit Clock In
(TRxCa)
DB
114
5
23
NC*
NC*
15
Input
DB
Receive Clock In
(RTxCa)
DD
115
8
26
8
NC*
17
Input
DD
Data Terminal
Ready (DTRa)
CD
108
12
30
1
4
20
Output
CD
External Clock Out
(TRxCa)
DA
113
17
35
NC*
NC*
24
Output
DA
Secondary Data
Carrier Detect
(DCDb)
SCF
122
NC*
NC*
NC*
NC*
12
Input
SCF
Secondary Clear
to Send (CTSb)
SCB
121
NC*
NC*
NC*
NC*
13
Input
SCB
Secondary Transmit
Data (TxDb)
SBA
118
NC*
NC*
NC*
NC*
14
Output
SBA
Secondary Receive
Data (RxDb)
SBB
119
NC*
NC*
NC*
NC*
16
Input
SBB
Secondary Request
to Send (RTSb)
SCA
120
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NC*
NC*
NC*
NC*
19
Output
SCA
*NC = No connection
FIGURE A-1 shows the RS-232 and RS-423 single-port plug, which is a specially wired male DB-25 connector. Connect the plug to a serial port in the back of the system under test. The following table lists the pin connections for connecting the first plug to the second plug:
First Plug
Second Plug
FIGURE A-1 25-pin RS-232 Plug Wiring Diagram
FIGURE A-2 shows how to connect 25-pin RS-232 and RS-423 port to 25-pin RS 232 and RS 423 port cables (two DB-25 connections). Connect the cable to a pair of serial ports in the back of the system under test. Both plugs are male. The following table lists the pin connections for connecting the first plug to the second plug:
First Plug
Second Plug
FIGURE A-2 25-pin RS-232 Port-to-Port Cable Wiring Diagram
FIGURE A-3 shows how to connect 8-pin round DIN RS-232 port to RS-423 to 8-pin round-DIN RS-232 and RS-423 port cables. Both plugs are male. The following table lists the pin connections for connecting the first plug to the second plug:
First Plug
Second Plug
Pin 3
Pin 5
Pin 5
Pin 3
Pin 6
Pin 2
Pin 2
Pin 6
Pin 7
Pin 1
FIGURE A-3 8-Pin to 8-Pin Cable Wiring Diagram
Pin 8, Receive clock In (DD), remains unconnected.
FIGURE A-4 shows how to connect male 8-pin round-DIN RS-232 and RS-423 single-port plugs. The following table lists the pin connections for connecting the first plug to the second plug:
First Plug
Second Plug
Pin 3
Pin 5
Pin 6
Pin 2
Pin 1
Pin 7
FIGURE A-4 8-Pin Plug Wiring Diagram
Pin 8, Receive Clock In (DD), remains unconnected.
FIGURE A-5 shows how to connect a 25-pin Port A to Port B plug for most systems. The following table lists the pin connections for connecting the first plug to the second plug:
First Plug
Second Plug
FIGURE A-5 Port A-to-Port B Plug Wiring Diagram
If your system has a single communications port to connect it to peripherals, follow the connection instructions in FIGURE A-6 to make a male 25-pin plug for that communications port. The following table lists the pin connections for connecting the first plug to the second plug:
First Plug
Second Plug
FIGURE A-6 Port A-to-A, Port B-to-B Plug Wiring Diagram
FIGURE A-7 shows a 96-pin connector that you can order from Sun (part number 370-). The following table lists the pin connections for connecting the first plug to the second plug:
First Plug
Second Plug
Pins 4 and 12
Pin 77
Pin 5
Pin 20
Pin 6
Pin 36
Pin 10
Pin 11
Pin 13
Pin 16
Pin 14
Pin 15
Pin 18
Pin 19
Pin 21
Pin 24
Pin 28
Pin 60
Pin 29
Pin 68
Pin 30
Pin 34
Pin 37
Pin 40
Pin 38
Pin 39
Pin 42
Pin 43
Pin 45
Pin 48
Pin 46
Pin 47
Pin 52
Pin 78
Pin 53
Pin 55
Pin 54
Pin 75
Pin 58
Pin 59
Pin 61
Pin 64
Pin 62
Pin 63
Pin 66
Pin 67
Pin 69
Pin 72
Pin 76
Pin 79
Pin 82
Pin 83
Pin 85
Pin 88
Pin 86
Pin 87
Pin 90
Pin 91
Pin 93
Pin 96
Pin 94
Pin 95
The following are the materials used for this plug:
FIGURE A-7 96-Pin Female Connector Wiring Diagram
You can order this 96-pin connector from Sun (part number 370-).
FIGURE A-8 96-Pin Female Special Connector Wiring Diagram
Use these wiring instructions for a cable for two 37-pin RS-449 synchronous ports.
FIGURE A-9 37-Pin RS-449 Cable Wiring Diagram
Use these wiring instructions to make a male 37-pin RS-449 plug. This plug is also available from Sun (part number 530-).
FIGURE A-10 37-Pin RS-449 Plug Wiring Diagram
Use these wiring instructions for male 9-pin RS-232 and RS-423 single-port plugs.
FIGURE A-11 9-Pin Male Single-Port Plug Wiring Diagram
Use these wiring directions for female 9-pin RS-232 and RS-423 single-port plugs. Use this plug with the pcmciatest.
FIGURE A-12 9-Pin Female Single-Port Plug Wiring Diagram
Use these wiring instructions for a 9-pin RS-232 and RS-423 port to 25-pin RS-232 and RS 423 port cables. Both connectors are male.
FIGURE A-13 9-Pin to 25-Pin Port-to-Port Cable Wiring Diagram
Use these wiring instructions for 9-pin RS-232 and RS 423 port to 9-pin RS-232 and RS-423 port cables. Both plugs are male.
FIGURE A-14 9-Pin to 9-Pin Port-to-Port Cable Wiring Diagram
This cable has no Sun part number assigned to it.
Using two standard RJ-45 connectors, and connect pin 1 to pin 1, pin 2 to pin 2, and so on, for all pins. This is a straight-through connection.
Use the following wiring instructions for standard RJ-45 connectors for Fast Ethernet. Use cable in netlbtest for eri devices.
FIGURE A-15 Twisted-Pair Ethernet (TPE) Cable Wiring Diagram for Fast Ethernet
Use the following wiring instructions for RJ-45 plugs for Gigabit and 10/100 Ethernet. This cable is used in netlbtest for Gigabit and 10/100 devices.
FIGURE A-16 TPE Cable Wiring Diagram for Gigabit and 10/100 Ethernet
Use these wiring instructions for male 9-pin RS-232 and RS-423 single-port plugs.
FIGURE A-17 9-Pin Male Single-Port Plug Wiring Diagram
Use these wiring directions for female 9-pin RS-232 and RS-423 single-port plugs. Use this plug with the pcmciatest.
FIGURE A-18 9-Pin Female Single-Port Plug Wiring Diagram
Use these wiring instructions for male 9-pin DB-9 external plugs.
FIGURE A-19 9-Pin Male DB-9 External Connector Wiring Diagram
The signals and names for the DB-9 connector are as follows.
Pin
Name
Signal
1
DCD
Data Carrier Detect
2
RxD
Receive Data
3
TxD
Transmit Data
4
DTR
Data Terminal Ready
5
SGND
Signal Ground
6
DSR
Data Set Ready
7
RTS
Request To Send
8
CTS
Clear To Send
9
RI
Ring Indicator
Use these wiring instructions for female 9-pin DB-9 external connectors.
FIGURE A-20 9-Pin Female DB-9 External Connector Wiring Diagram
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