Motorola 49901 Instruction Manual - Page 78

DB25 X.21/V.11 Pinouts, Port 3, DCE Signal, Function/Signal, using, Crossover, Adapter Cable

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Cabling the Vanguard 340 and 340 Enhanced DB25 X.21/V.11 Pinouts Connector Pinout This table shows the DB25 X.21/V.11 connector pinouts for DCE/DTE mode. To use DTE to DTE or DCE to DCE mode, a crossover adapter cable is required. Refer to Figure 3-5 on page 3-21 for crossover cable connections: Port 3 DCE Signal Pin 1 2 3 4 5 6 7 8 14 15 16 17 (no signal) 18 (no signal) 20 21 22 24 25 Function/Signal Name PROTECTIVE GROUND TRANSMITTED DATA-A RECEIVED DATA-A CONTROL-A (no connection) INDICATION-B SIGNAL GROUND INDICATION-A TRANSMITTED DATA-B SIGNAL ELEMENT TIMING-A RECEIVED DATA-B RECEIVE CLOCK-A RECEIVE CLOCK-B CONTROL-B SIGNAL ELEMENT TIMING-B EXTERNAL TRANSMIT CLOCK B EXTERNAL TRANSMIT CLOCK A (no connection) Port 3 Pin DTE Signal using Crossover Adapter Cable Function/Signal Name 1 PROTECTIVE GROUND 2 TRANSMITTED DATA-A 3 RECEIVED DATA-A 4 CONTROL-A 5 (no connection) 6 INDICATION-B 7 SIGNAL GROUND 8 INDICATION-A 14 TRANSMITTED DATA-B 15 (no connection) 16 17 (no signal) 18 (no signal) 20 21 RECEIVED DATA-B RECEIVE CLOCK-A RECEIVE CLOCK-B CONTROL-B (no connection) 22 24 25 EXTERNAL TRANSMIT CLOCK B EXTERNAL TRANSMIT CLOCK A (no connection) Note To use DTE mode, the Interface Options parameter must be set to XOVER. For details on setting the X.21/V.11 Interface Options, see "Setting the Interface Options" section on page 3-10. 3-20 Installation and Replacement

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3-20
Installation and Replacement
Cabling the Vanguard 340 and 340 Enhanced
DB25 X.21/V.11 Pinouts
Connector Pinout
This table shows the DB25 X.21/V.11 connector pinouts for DCE/DTE mode. To use
DTE to DTE or DCE to DCE mode, a crossover adapter cable is required. Refer to
Figure 3-5 on page 3-21 for crossover cable connections:
Note
To use DTE mode, the Interface Options parameter must be set to XOVER. For
details on setting the X.21/V.11 Interface Options, see “Setting the Interface
Options” section on page 3-10.
Port 3
Pin
DCE Signal
Function/Signal
Name
Port 3
Pin
DTE Signal
using
Crossover
Adapter Cable
Function/Signal
Name
1
-------------
PROTECTIVE
GROUND
1
-------------
PROTECTIVE
GROUND
2
<------------
TRANSMITTED
DATA-A
2
------------>
TRANSMITTED
DATA-A
3
------------>
RECEIVED DATA-A
3
<------------
RECEIVED DATA-A
4
<------------
CONTROL-A
4
------------>
CONTROL-A
5
-------------
(no connection)
5
-------------
(no connection)
6
------------>
INDICATION-B
6
<------------
INDICATION-B
7
-------------
SIGNAL GROUND
7
-------------
SIGNAL GROUND
8
------------>
INDICATION-A
8
<------------
INDICATION-A
14
<------------
TRANSMITTED
DATA-B
14
------------>
TRANSMITTED
DATA-B
15
------------>
SIGNAL ELEMENT
TIMING-A
15
-------------
(no connection)
16
------------>
RECEIVED DATA-B
16
<------------
RECEIVED DATA-B
17
(no signal)
RECEIVE CLOCK-A
17
(no signal)
RECEIVE CLOCK-A
18
(no signal)
RECEIVE CLOCK-B
18
(no signal)
RECEIVE CLOCK-B
20
<------------
CONTROL-B
20
------------>
CONTROL-B
21
------------>
SIGNAL ELEMENT
TIMING-B
21
-------------
(no connection)
22
<------------
EXTERNAL
TRANSMIT
CLOCK B
22
------------>
EXTERNAL
TRANSMIT
CLOCK B
24
<------------
EXTERNAL
TRANSMIT
CLOCK A
24
------------>
EXTERNAL
TRANSMIT
CLOCK A
25
--------------
(no connection)
25
-------------
(no connection)