Pps: Pulse Per Second - ashtech DG16 Reference Manual

where Table 6.39 outlines the parameters.
Parameter
h1 Position Mode
h2 Altitude fix mode
h3 PDOP mask
h4 HDOP mask
h5 VDOP mask
h6 Position elevation mask
h7 Point position mode
h8 Use unhealthy satellites for position computation
h9 Use ionospheric model
h10 Satellite System Used

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.
144
Table 6.39. $PASHR,PPR Response Format
Description
DG14 and DG16 Board & Sensor Reference Manual
Range
0 to 3
0 to 1
0 to 99
0 to 99
0 to 99
0 to 90
N or Y
N or Y
N or Y
GPS