CSI Wireless SBX-3, Reference Manual

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SBX-3 Reference Manual
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The SBX-3 stores the current primary beacon in memory so that it is
available upon subsequent power-up. You may force a new Global
Search at any time using the $PCSI,4<CR><LF> proprietary NMEA
0183 command defined in Section 5.6.2.1.
3.6.2 Manual Mode
In Full Manual Tune Mode, you may specify a frequency and bit rate for
the receiver to tune to, or specify the frequency only, allowing the SBX-
3 to identify the correct MSK bit rate automatically (Partial Manual Tune
mode). Setting manual operation is discussed in Sections 5.6.1.1 and
5.6.1.2 respectively, using the $GPMSK NMEA 0183 command.
Acquisition of a beacon in manual tune mode is dependent upon the
data rate of the station. In Full Manual Tune mode with an MSK rate of
200 bps, signal acquisition should occur within 5 seconds if no
demodulation errors occur. Signal acquisition should occur within 10
seconds for a modulation rate of 100 bps provided that no
demodulation errors occur.
Partial Manual Tune mode requires that the SBX-3 identify the correct
MSK rate automatically. This automatic detection could result in signal
acquisition rates of up to approximately 15 seconds.
3.7 Factory Default Settings
Table 3-4 presents the factory default SBX-3 operating mode, while
Table 3-5 lists the default SBX-3 communication settings. These
operation and port settings are valid upon initial power-up. The SBX-3
maintains any changes made to its operation or port settings in non-
volatile memory for subsequent power cycles.