Trimble Outdoors THUNDERBOLT 64057-00-ENG User Manual

Page 58

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A Trimble Standard Interface Protocol

56 Trimble ThunderBolt E GPS Disciplined Clock User Guide

Note – All angles are in radians. Reference numbers refer to Global Positioning System
Standard Positioning Service Signal Specification. This specification is currently available
in Adobe Acrobat format at

www.navcen.uscg.gov/pubs/gps/sigspec/

.

Report Packet 0x59: Status of Satellite Disable or Ignore Health

This packet is sent in response to command packet 0x39.

Report Packet 0x5A: Raw Data Measurement Data

Packet 0x5A provides raw GPS measurement data. This packet is sent in response to
packet 0x3A or automatically if enabled with packet 0x35.

75-82

sqrt(A)

Double

Table 2.5

83-86

toe

Single

Table 2.5

87-90

Cic

Single

Table 2.5

91-98

(OMEGA)0

Double

Table 2.5

99-102

Cis

Single

Table 2.5

103-110

io

Double

Table 2.5

111-114

Crc

Single

Table 2.5

115-122

(OMEGA)

Double

Table 2.5

123-126

OMEGADOT

Single

Table 2.5

127-130

IDOT

Single

Table 2.5

131-138

Axis

Double

139-146

n

Double

147-154

r1me2

Double

= sqrt(1.0-e2)

155-162

OMEGA_n

Double

Derived from OMEGA_0, OMEGADOT

163-170

ODOT_n

Double

Derived from OMEGADOT

Byte

Item

Type

Value

Meaning

0

Operation

UINT8

3

The remaining bytes tell whether the
receiver has enabled each satellite for
selection.

6

The remaining bytes tell whether the
receiver heeds or ignores each satellite's
health as a criterion for selection.

1 to 32

Sat PRN

UINT8 (1
per SV)

0

Enable satellite selection or heed satellite's
health.

1

Disable satellite selection or ignore
satellite's health.

Byte

Item

Type

Units

0

SV PRN number

UINT8

1-4

Sample length

Single

milliseconds

5-8

Signal level

Single

AMU or dB-Hz

Byte

Item

Type

Meaning

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