A

Trimble Standard Interface Protocol

0x8F-14

Report Packet 8F-14

Current Datum Values

This packet contains 43 data bytes with the values for the datum currently in use and is sent in response to packet 8E-14. If a built-in datum is being used, both the datum index and the five double-precision values for that index are returned. If the receiver is operating on a custom user-entered datum, the datum index is set to 1 and the five values are displayed. These five values describe an ellipsoid to convert ECEF XYZ coordinate system into LLA.

Table A-86 Report Packet 8F-14

Byte #

Type

Value

Units

 

 

 

 

0

Super packet ID

14

 

 

 

 

 

1-2

Datum index

Datum index

 

 

(-1 for custom)

 

 

 

 

 

 

3-10

DOUBLE

DX

meters

 

 

 

 

11-18

DOUBLE

DY

meters

 

 

 

 

19-26

DOUBLE

DZ

meters

 

 

 

 

27-34

DOUBLE

A-axis

meters

 

 

 

 

35-42

DOUBLE

Eccentricity squared

none

 

 

 

 

!Note – A complete list of datums is provided at the end of this appendix.

Acutime 2000 Synchronization Kit User Guide

A-105

Page 211
Image 211
Trimble Outdoors AcutimeTM2000 Synchronization Kit manual 0x8F-14, Current Datum Values, Table A-86 Report Packet 8F-14