TRAK MODEL 9100 MODULAR FREQUENCY/TIME SYSTEM
3-14
TM4400013
Rev
D
Request navigation solution being received from GPS receiver
NOTE: The position returned from this request is the position the GPS receiver is using to output precise time. If
the position source is “NA” or “N”, the position returned from this command will update every second until the
new position computed by the receiver. If the position source is “U” or “A”, the receiver will then return either the
user input or the average position respectively.
Host
sends:
X.RQLN
<CR>
9100
replies:
X.RQLN
dd:mm.fffN,ddd:mm.fffW,Shhhhh.f<CR><LF>
Where:
dd:mm.fffN
is
Latitude,
where N is North or S is South
ddd:mm.fffW
is
Longitude,
where W is West or E is East
Shhhhh.f
is
signed
Height
in
meters
X is described on command summary page
Request leap second status
This command provides date of the next pending leap second. If no leap second is scheduled, the data are all
zeros. (Data is automatically down loaded from GPS).
Host
sends:
X.RQLS<CR>
9100
replies:
X.RQLS
yy,mm,dd<CR><LF>
Where:
yy = year; e.g. (two digit year)
mm
=
month
dd
=
day
of
month
X is described on command summary page
Request Currently Visible Satellite Position and Tracking Status and Dilution of Precision (DOP) Values -
Host
sends:
X.RQSD
<CR>
9100 replies:
X.RQSD PRN sv, AZ=AAA, EL=EE, SN=SS.S,TRK=t<CR><LF>
X.Current
DOP
=
DDD.D<CR><LF>
where:
sv is the satellite number
AAA is the azimuth in degrees
EE is the elevation is degrees
SS.S is the signal to noise ratio
T is the tracking status (“Y”= tracking, “N”= not tracking)
DDD.D is the PDOP in 3D fix HDOP in 2D fix or 00 in position
hold mode (DOP = dilution of precision)
X is described on command summary page
The “RQSD” line is repeated for each satellite currently visible up to a maximum of 12 satellites. In addition,
each comma is followed by a space character.
