Jair; Jasc,Virtual - Geneq iSXBlue II GNSS Series Technical Reference Manual

5.2.2 $JAIR

This command allows you to place the iSXBlue/SXBlue II GNSS into AIR mode HIGH, where the
receiver is optimized for the high dynamic environment associated with airborne platforms. JAIR defaults
to normal (NORM) and this setting is recommended for most applications. The AUTO option allows the
receiver to decide when to turn JAIR on HIGH. Turning AIR mode on to HIGH is not recommended for
iSXBlue/SXBlue II GNSS operation.
$JAIR,NORM: normal track and nav filter bandwidth
$JAIR,HIGH: highest track and nav filter bandwidth
$JAIR,LOW: lowest track and nav filter bandwidth
$JAIR,AUTO: default track and nav filter bandwidth, usually the same as normal, but automatically goes
to "HIGH" above 30 m/sec (108 Km/hr or 67.1 mi/hr).
On "HIGH" setting, larger "sudden drops in SNR" are tolerated before observation data is discarded from
the Navigation solution. This may be beneficial when an aircraft is rapidly banking (e.g., crop-duster)
and, hence, the GPS signal rapidly transitions its entry into the antenna from area of high-antenna-gain
pattern to that of low antenna gain.
The format of this command follows:
$JAIR,r<CR><LF>
Where feature status variable, 'r', may be one of the following values:
r Description
0 or NORM Normal
1 or HIGH High
2 or LOW Low
3 or AUTO* Norm (Auto)
The SXBlue II GPS will reply with the following response:
$>JAIR,MAN,NORM
$>JAIR,MAN,HIGH
$>JAIR,MAN,LOW
$>JAIR,AUTO,NORM

5.2.3 $JASC,VIRTUAL

When using an external correction source, this command is used to 'daisy chain' RTCM data from being
input from one port and output through the other. For example, if RTCM is input on Port B, this data will
correct the iSXBlue/SXBlue II GNSS position and can also be output through Port C. The
iSXBlue/SXBlue II GNSS acts as a pass-through for the RTCM data. Either port may be configured to
accept RTCM data input and this command then allows another port to output the RTCM data. To
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iSXblue/SXBlue II GNSS Series Technical Reference Manual