ashtech GG Surveyor, Reference Manual

Page: 113 / 256

Command/Response Formats 95
Com
m
and
s
For NMEA messages LTM, AIM, POS, GLL, GXP, GGA, VTG, GSN, MSG, GSA,
SAT, GRS, RRE, TTT, and ZDA, the default is OFF (disabled) for both ports.
PDP: Position Dilution of Precision
$PASHS,PDP,d
Set the value of the PDOP mask to d, where d is a number between 0 and 99. Position
is not computed if the PDOP exceeds the PDOP mask. The default is 40.
Example: Set PDOP mask to 20
$PASHS,PDP,20<Enter>
GTF:0 Time shift mode for position computation. Default is 0.
DTG:0 Time shift in microseconds. Default is 0.
TDP:04 Time dilution of precision. Mask default is 04.
GTP:Y Time shift priority over altitude fixed for position computation. Default is Y.
PMD:1 Position mode for the minimum number of satellites required to compute a
position.
FIX:0 Altitude hold position fix mode for the altitude used when computing a 2-D
position. With the default value (0), the most recent antenna altitude is used.
ALT:+00000.00 Height of the antenna position in meters. Default is 0.
PDP:40 Position Dilution Of Precision. Mask default is 40.
HDP:04 Horizontal Dilution Of Precision. Mask default is 04.
VDP:04 Vertical Dilution Of Precision mask. Default is 04.
PEM:05 Position elevation mask. Elevation below which the satellite will not be used to
compute a position. Default is 05 degrees.
UNH:N Use unhealthy satellites for position computation. The default is N.
ION:N Do not include ionospheric and tropospheric models in position computation.
Default is N.
SAV:N Save parameters in the battery-backed memory. With default value (N), at the
next power cycle, the default parameters are used.
RTC:OFF RTCM differential mode setting. OFF for disabled, BAS for base station setting,
REM for remote station setting. Default is OFF.
PRT:A Port assigned to send or receive differential corrections.
PER:001.00 Send interval of the NMEA response messages, with the exception of TTT.
Default is 1 second.
Table 6.18: $PASHR,PAR Response Message Parameters (continued)
Parameter Description