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A-120 Acutime 2000 Synchronization Kit User Guide
Trimble Standard Interface Protocol
A
GPS Decoding Status: This field indicates the decoding status of the
GPS receiver.
Local Clock Offset: This field carries the offset of the local clock
relative to UTC or GPS as reported by the GPS receiver in
nanoseconds. Positive values indicate that the ACE UTC GPS’s local
clock is late relative to GPS or UTC. Also known as bias.
Oscillator Offset: This field carries the frequency offset of the local
clock relative to UTC or GPS as reported by the GPS receiver in ppb
(parts-per-billion). Positive values indicate that the ACE UTC GPS’s
local clock is running slow relative to GPS or UTC. Also known as
bias rate.
Latitude: This field carries the latitude of the position being shown.
The units are in radians and vary from -π/2 to +π/2. Negative values
represent southern latitudes. Positive values represent northern
latitudes.
Longitude: This field carries the longitude of the position being
shown. The units are in radians and vary from -π to +π. Negative
values represent western longitudes. Positive values represent eastern
longitudes.
Altitude: This field carries the altitude of the position being shown.
The units are in meters according to the current datum.
PPS Quantization Error: This field identifies the PPS quantization
error in nanoseconds.
PPS Output Status: This field identifies the status of the PPS output.