CSI Wireless SBX-3, Справочное руководство

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SBX-3 Reference Manual
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field through the secondary port, the periodic output of the $CRMSS
message will not impact the output of RTCM on the main port.
However, when tuning the SBX-3 with a non-zero ‘n’ field through the
primary port, the NMEA status message will be interspersed within the
RTCM data. Most GPS engines will not be able to filter the NMEA
message, causing the overall data to fail parity checking.
When power to the SBX-3 is removed and reapplied, the status output
interval resets to zero (no output). Section 5.7.1.2 discusses the
$CRMSS status message output by the SBX-3 as initiated using this
command.
Note – When tuning using the primary serial port, if the ‘n’ field
in this message is non-zero, the status data message output by the
SBX-3 may interrupt the flow of RTCM data to the GPS receiver.
Re-power the SBX-3 to stop the output of the $CRMSS message,
or re-tune the beacon receiver with the ‘n’ field set to zero.
5.6.1.3 Automatic Beacon Search Command ($GPMSK)
This command initiates the SBX-3 automatic mode of operation as
described in Section 3.6. In this mode, the receiver locks to the best
available station without operator intervention. The command has the
following format:
$GPMSK,,A,,A,n<CR><LF>
Response:
$PCSI,ACK,GPMSK,,A,,A,n<CR><LF>
Field Description
A Designates automatic frequency selection
A Designates automatic MSK bit rate selection
n Period of output of performance status message, 0 to 100 seconds ($CRMSS)
The SBX-3 provides the above response to this variety of $GPMSK
message, and immediately tunes to the optimum beacon station in