12
Table 3.
Choosing the right cable and the right connector for the desired serial port
Connector Cable Cable “PORT 1/2” Cable “PORT 1/2”
Cable “PORT 3”
Connector “PORT1”
PORT1
Connector “PORT 2/3”
PORT2
Connector “PORT 2/3”
PORT3
The signal level of all serial ports is RS232.
4.3.1.
PORT 1
Port 1 provides asynchronous channel. This port can be used with full 8 signal RS-
232 handshaking signals. The baud rate for Port 1 may be between 1200 and 230400 bit/s.
Baud rate 230400 bit/s can be used only with AT command mode and autobauding.
Port 1 can operate in the following modes:
•
GPS Receiver,
•
System Protocol – for configuring T-BoxN12R using M2M mode,
•
AT Command Mode – for connecting Internet, configuring device using AT
mode,
•
HW Detection – mode is selected by switch.
The mode of PORT1 is selected by changing settings in configuration software
(Nokia 12 Configurator, which is found in the CD) and by changing switch, which is found
on the front panel. Refer to Table 4 to see, how to choose the desired mode.
The default value for this port in configuration is HW Detection.
Table 4.
Choosing the right mode of switch and the setting in configuration to
have the desired mode of PORT1
Configuration Switch
AT
I/O
System Protocol
System protocol
-
General IO
-
I/O mode
AT
AT mode
-
GPS receiver
GPS receiver mode
-
HW detection
AT mode
1
I/O mode
1
In AT mode outputs 2,3,4,5 and Inputs 5 and 6 are disabled!
Note: After changing the position of the switch, please reboot T-BoxN12R (power off and on again)
for the changes to take effect.
The T-BoxN12R provides all signals for the industry standard DB9 RS-232C
connection.
