Trimble Outdoors Part Number 45005-00-ENG manual 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.

A-120 Acutime 2000 Synchronization Kit User Guide