Trimble Outdoors AcutimeTM2000 Synchronization Kit Bias and Bias Rate Report, Option Flags Report

A Trimble Standard Interface Protocol

0x54 Report Packet 54

Bias and Bias Rate Report

The receiver sends this packet to provide the computed clock-only solution when the receiver is in the manual or automatic Overdetermined Clock mode or Time Only (1-SV) mode.

Table A-46 Report Packet 54

Byte	Item	Type	Units
0-3	Bias	SINGLE	meters
4-7	Bias rate	SINGLE	meters/second
8-11	Time of fix	SINGLE	seconds

The bias is the offset of the receiver internal time clock from GPS time. Bias is expressed as meters of apparent range from the satellites. It is used to correct the one PPS output. Bias rate is the frequency error of the receiver internal oscillator. It is expressed as apparent range rate. Time-of-fix is in GPS or UTC time as selected by the I/O "timing" option in packet 0x35.

"Caution – For accurate interpretation of the propagation delay, the precise constant for the speed of light must be used. The ICD-200 value for the speed of light is 299,792,458 meters per second.

0x55 Report Packet 55

I/O Option Flags Report

This packet provides current I/O options in response to packet 35 request. The data format is the same as for packet 35. See packet 35 for details.

Acutime 2000 Synchronization Kit User Guide A-55