American Dynamics ad1646 Installation Instruction
Code Line Connections for RS-232 (1646S Series)
1646S Receivers typically connect to other RS-232 devices via
a wall-mount, 8-pin Terminal Box, HP0047.
a wall-mount, 8-pin Terminal Box, HP0047.
Matrix Switching Systems, 1983 modems, RS-232 keyboards,
and other user-supplied RS-232 compatible devices, are
connected via a JJ0007 modular cable to the Terminal Box.
and other user-supplied RS-232 compatible devices, are
connected via a JJ0007 modular cable to the Terminal Box.
The Terminal Box connects to the 1646S 6-pin connector with
18 AWG shielded, computer-grade cable. For distances of
1000 ft (330 m) or less, between the Receiver and similar
devices, a direct connection using RS-232 cable with mating
connectors may be used. For distances over 1000 ft., a link
using modems is required (see the Appendix, RS-232 Typical
System Connection drawings). Refer to Figure 10 for typical
Code Line "Star" Connections.
18 AWG shielded, computer-grade cable. For distances of
1000 ft (330 m) or less, between the Receiver and similar
devices, a direct connection using RS-232 cable with mating
connectors may be used. For distances over 1000 ft., a link
using modems is required (see the Appendix, RS-232 Typical
System Connection drawings). Refer to Figure 10 for typical
Code Line "Star" Connections.
The terminal definitions for the 1646S 6-pin connector are
shown in Table 6.
shown in Table 6.
Table 6 - 1646S 6-pin Cable Plug Definitions
RS-232
Signal
Signal
6-Pin Connector
Pin#
Definition
T +
1
Transmit
Ground symbol
2
Ground
T -
3
No Connection
R +
4
Receive
Ground symbol
5
Ground
R -
6
No Connection
The terminal definitions for the Terminal Box are shown in
Table 7.
Table 7.
Table 7 - Terminal Box Definitions
Pin#
Definition
1
No Connection
2
Ground
3
No Connection
4
Transmit
5
Receive
6
No Connection
7
Ground
8
No Connection
Observe the following connections:
●
Transmit on the Terminal Box (pin 4) must be connected to
Receive (pin 4) on the 6-pin connector,
●
Receive on the Terminal Box (pin 5) must be connected to
Transmit (pin 1) on the 6-pin connector, and
●
GND on the Terminal Box (pin 7) must be connected to
GND (pin 2) on the 6-pin connector.
RS-232 cable shield connections should be made only at the
connectors to be attached to the unit.
connectors to be attached to the unit.
Baud Rate Suggestions:
For operation, the data rates must be compatible with the
number of keyboards. (See Table 3, page 4 for baud rate
setup.) The suggested baud rate is based on the number of
keyboards in the system.
number of keyboards. (See Table 3, page 4 for baud rate
setup.) The suggested baud rate is based on the number of
keyboards in the system.
Baud
Keyboard(s)
1200
1
2400
3
4800 10
(default) 9600
20 or more
Before Starting:
1. Check the power line to verify that the power is off.
2. Plug the prewired 8-pin cable plug into the unit.
2. Plug the prewired 8-pin cable plug into the unit.
The green Code LED on these Receivers is illuminated when
the unit is receiving valid code.
the unit is receiving valid code.
CONNECTIONS
11
RS-232
Source
Source
(i.e., keyboard)
Receiver
Receiver
Receiver
Distribution
System
J 1
J 1
J 1
Figure 10 - Code Line “Star” Connections
Figure 11 - 1646S Receiver Module PCB
12
3456
7891
0
OFF
12
345
6789
10
OFF
J3
S1
S2