Trimble Standard Interface Protocol

A

0x5A

!

Report Packet 5A

Raw Measurement Data Report

This packet provides raw GPS measurement data. If the I/O auxiliary option for "raw data" has been selected (packet 35), and it is masked for output by packet 8E-4D, the receiver outputs a packet 5A for each satellite being tracked, once per second. The receiver also sends this packet in response to packet 3A. The data format is shown below.

Table A-56 Report Packet 5A

Byte

Item

Type

Units

 

 

 

 

0

Satellite PRN number

BYTE

----

 

 

 

 

1-4

reserved

SINGLE

 

 

 

 

 

5-8

Signal level

SINGLE

 

 

 

 

 

9-12

Code phase

SINGLE

1/16th chip

 

 

 

 

13-16

Doppler

SINGLE

Hertz

 

 

 

 

17-24

Time of

DOUBLE

seconds

 

Measurement

 

 

Note – Report Packet 5A provides the raw satellite signal measurement information used in computing a fix.

The satellite PRN (Byte 0) number is a unique identification for each of the 32 GPS satellites.

A-64

Acutime 2000 Synchronization Kit User Guide

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Image 170
Trimble Outdoors Part Number 45005-00-ENG manual 0x5A, Raw Measurement Data Report, Table A-56 Report Packet 5A