CSI Wireless SBX-3, Справочное руководство

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SBX-3 Reference Manual
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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 $CRMSS message,
or re-tune the beacon receiver with the ‘n’ field set to zero.
5.6.1.2 Partial Manual Tune Command ($GPMSK)
This command instructs the SBX-3 to tune to a specified frequency and
automatically select the correct MSK rate. It has the following form:
$GPMSK,fff.f,M,,A,n<CR><LF
Response:
$PCSI,ACK,GPMSK,fff.f,M,,A,n<CR><LF>
Field Description
fff.f Frequency in kHz (283.5 to 325)
M Designates manual frequency selection
A Designates automatic MSK bit rate selection
n Period of output of performance status message, 0 to 100 seconds ($CRMSS)
When this message is acknowledged by the SBX-3, it will immediately
tune to the frequency specified and demodulate at the rate specified.
When the ‘n’ field is set to a non-zero value, the SBX-3 will output the
$CRMSS message at that period through the serial port from which the
SBX-3 was tuned. When issuing the tune command with a non-zero ‘n’