Spectra Precision ProMark 800 Reference Manual - Manual (Page 413)

401
Output Message Library
Reminder on How
to Output SNG
Messages
Use the $PASHS,RAW command with the syntax below:
$PASHS,RAW,SNG,<port_ID>,ON,<Rate>
For more details on the $PASHS,RAW command, refer to the
Set Command Library Chapter.
As an example, the command below will output SNG
messages on port A at a rate of 15 seconds:
$PASHS,RAW,SNG,A,ON,15
SNV: GPS Ephemeris Data
This message contains the GPS ephemeris data for one
satellite.
The message is as follows:
$PASHR,SNV,<structure>
The message’s binary structure is described in the table
below.
Type Name Size Contents
Short Wn 2 GPS week number
Long Two 4 Seconds in GPS week
Float Tgd 4 Group delay (sec)
Long Aodc 4 Clock data issue
Long Toc 4 Clock data reference time (sec)
Float af2 4 Clock correction (sec/sec2)
Float af1 4 Clock correction (sec/sec)
Float af0 4 Clock correction (sec)
Long Aode 4 Orbit data issue
Float Dn 4 Mean anomaly correction (semicircles/sec)
Double M0 8 Mean anomaly at reference time (semicircles)
Double e 8 Eccentricity
Double A1/2 8 Square root of semi-major axis (meters 1/2)
Long toe 4 Reference time for orbit (sec)
Float cic 4 Harmonic correction term (radians)
Float crc 4 Harmonic correction term (meters)
Float cis 4 Harmonic correction term (radians)
Float crs 4 Harmonic correction term (meters)
Float cuc 4 Harmonic correction term (radians)
Float cus 4 Harmonic correction term (meters)
Double omega0 8 Longitude of ascending node (semicircles)
Double omega 8 Argument of perigee (semicircles)