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Et-314 – USGlobalsat ET-314 User Manual

Page 12

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ET-314


The Specifications are subject to be changed without notice. Copyright © 2007, GlobalSat Technology.

Page 12 of 19

Version 1.2

Table B-4 GLL Data Format

Name

Example

Units

Description

Message ID

$GPGLL

GLL protocol header

Latitude 3723.2475

ddmm.mmmm

N/S Indicator n

N=north or S=south

Longitude

12158.3416

dddmm.mmmm

E/W Indicator W

E=east

or

W=west

UTC Position

161229.487

hhmmss.sss

Status

A

A=data valid or V=data not valid

Checksum *2C

End

of

message termination

GSA-GNSS DOP and Active Satellites

Table B-5 contains the values for the following example:

$GPGSA,A,3,07,02,26,27,09,04,15,,,,,,1.8,1.0,1.5*33

Table B-5 GSA Data Format

Name Example

Units Description

Message ID

$GPGSA

GSA protocol header

Mode1 A

See

Table

B-6

Mode2 3

See

Table

B-7

Satellite Used

1

07

Sv on Channel 1

Satellite Used

1

02

Sv on Channel 2

…..

Satellite Used

1

Sv on Channel 12

PDOP

1.8

Position dilution of Precision

HDOP

1.0

Horizontal dilution of Precision

VDOP

1.5

Vertical dilution of Precision

Checksum *33

End of message termination

1.

Satellite used in solution.

Table B-6 Mode1

Value

Description

M

Manual-forced to operate in 2D or 3D mode

A

2Dautomatic-allowed to automatically switch 2D/3D

Table B-7 Mode 2

Value

Description

1 Fix

Not

Available

2 2D
3 3D

GSV-GNSS Satellites in View

Table B-8 contains the values for the following example: