Configuration Settings - Iridium 9601 Product Developer Manual

Iridium Satellite LLC
9601 SBD Transceiver Product Developers Guide
V1.24 120505
The serial interface may be operated with a 3-wire connection, where only transmit, receive and ground
signals are used. However the 9 wire interface offers better control and is the recommended
implementation. Iridium is only able to provide limited 3-wire interface support. When operating with a 3-
wire connection, the following rules apply:
 AT&Dn must be set to AT&D0 to ignore the DTR input
 AT&Kn must be set to AT&K0 to disable RTS/CTS flow control
 The other output signals may be connected, and operate as follows:
 CTS driven ON (low)
 DSR operates as normal
 RI operates as normal
 DCD driven ON (low)
Note: RTS/CTS flow control, when enabled, is only used when the data port is in SBD data mode. In AT
command mode, RTS is ignored and CTS is driven ON (low).

3.3.2 Configuration Settings

The 9601 allows the DTE to configure the data port communication parameters. The three configuration
types are active, factory default, and stored. The active configuration is the set of parameters currently in
use. They can be changed by the DTE individually via specific AT commands. The factory default
configuration is stored in permanent memory. This configuration can be recalled at any time through use
of the AT&Fn command.
T w o g r o u p s o f s e t t i n g s , o r " p r o f i l e s " , c a n b e s t o r e d a s u s e r -defined configurations. The DTE first creates
desired active configurations and then writes them to memory using the AT&Wn command. These
profiles can be designated to be loaded as the active configuration upon 9601 power-up through use of
the AT&Yn command. The 9601 can be reset without loss of power to these profiles through use of the
ATZn command.
T h e c o n f i g u r a t i o n s e t t i n g s a r e s t o r e d i n " S-r e g i s t e r " l o c a t i o n s .
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