ashtech DG14, Справочное руководство

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144 DG14 and DG16 Board & Sensor Reference Manual
where Table 6.39 outlines the parameters.
PPS: Pulse Per Second
$PASHS,PPS,f1,f2,c1
The DG16 can generate a timing pulse with programmable period and offset. The
timing pulse is a square-wave signal which is generated by default once every
second (1PPS) with its rising edge synchronized to the GPS time and no offset from
GPS time. The PPS command changes the period, offset (from GPS time), and
synchronization edge of the pulse. The f1 parameter sets the period of the pulse in
seconds with a range between 0.05 and 99.95. The minimum setting depends upon
the receiver update rate, which is dependent upon the installed position update rate
or raw data update options. The f2 parameter is the offset from GPS time in
milliseconds, with 100 ns resolution (range between -999.9999 and +999.9999).
The c3 parameter determines whether the GPS time is synchronized with the rising
edge of the pulse (R) or the falling edge of the pulse (F).
$PASHQ,PPS,[c1]
This command queries the timing pulse parameters, where c1 is the optional port
designator for the output of the response. If a port is not specified, the receiver
sends the response to the current port.
Table 6.39. $PASHR,PPR Response Format
Parameter Description Range
h1 Position Mode 0 to 3
h2 Altitude fix mode 0 to 1
h3 PDOP mask 0 to 99
h4 HDOP mask 0 to 99
h5 VDOP mask 0 to 99
h6 Position elevation mask 0 to 90
h7 Point position mode N or Y
h8 Use unhealthy satellites for position computation N or Y
h9 Use ionospheric model N or Y
h10 Satellite System Used GPS