User Manual

RF-Baton! Transmitter Controller Installation and Operation Operation
June 1999 6880497G01-B 5-21
GPS Receiver FIPS Commands
The GPS receiver provides timing signals to the RF-B! transmitter controller which are critical
for proper operation. The RF-B! transmitter controller requires a regular timestamp and
one pulse per second (1 PPS) timing signal from the GPS receiver.
The available FIPS commands that interact with the GPS receiver can be separated into three
groups. Each group contains commands which provide valuable information regarding the
GPS receiver. They are:
• GPS configuration—receiver configuration data
• GPS values —including time, date, position, and dilution of position (DOP)
• GPS status—receiver health and GPS satellite status
OncoreVP GPS Configuration
Table 5-10 details the configuration of the OncoreVP GPS receiver. The GPS Config column
contains the action command used; the Response Column shows a typical response to the
action command; and the Description column details the configuration. The GPS
configuration can not be altered by the user.
Table 5-10: OncoreVP GPS Receiver Configuration
GPS Config Response Description
xDOP
a 203
RA 203 xDOP Type = PDOP The type of DOP used by the GPS receiver. Chosen
from Geometric, Position, Horizontal, Vertical, and
Time
Height Reference
a 205
RA 205 GPS ellipsoid height
reference
Chosen reference height above chosen ellipsoid or
above mean sea level.
Position Reference
a 206
RA 206 position reference: N-IN-
VIEW
Choose to calculate position using Best-4 or all visible
satellites (N-IN-VIEW)
Application Type
a 207
RA 207 application type: static Used to optimize satellite search. Chosen from Air,
Handheld, Land, Marine and Static.
Position Hold
a 213
RA 213 Position-Hold:
ENABLED
Used for optimization. Enabled or disabled.