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sv | This field specifies the SV for asynchronous messages from the GPS receiver. This field is only valid for the ephemeris and observation command. This field is also sent as part of a read command. | ||||||||||||||||||||||||||||||||||||||
command | This field specifies which message type is associated with this scan input record, and can be:
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srbx | This field specifies that this record is for data that is received from the GPS receiver asynchronously. |