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0 software interface, 1 nmea output messages, 2 sirf binary – Navman LA000508 User Manual

Page 13: 3 software functions and capabilities, Table 5‑1: jupiter 20 default baud rates, Table 5‑2: default nmea messages

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LA000507G © 2006 Navman New Zealand. All rights reserved. Proprietary information and specifications subject to change without notice.

5.0 Software interface

The host serial I/O port of the receiver’s serial data interface supports full duplex communication

between the receiver and the user. The default serial modes are shown in Table 5‑1.

Port

J20

(GSW2.3)

J20S

(XTrac)

J20D

(SiRFDRive 1.0)

Port A

NMEA, 9600

NMEA, 9600

NMEA, 9600

Port B

RTCM, 9600

SiRF binary, 38 400

RTCM, 9600

Table 5-1: Jupiter 20 default baud rates

5.1 NMEA output messages

The output NMEA (0183 v2.2) messages and intervals for the receiver are listed in Table 5‑2.

A complete description of each NMEA message is contained in the Navman NMEA reference

manual (MN000315).

NMEA message

J20

J20S

J20D

GGA

1 s

1 s

1 s

GSA

1 s

1 s

1 s

GSV

1 s

1 s

1 s

RMC

1 s

1 s

1 s

VTG

1 s

1 s

1 s

GLL

1 s

1 s

1 s

ZDA

1 s

N/A

N/A

PTTK, DR

N/A

N/A

1 s

N/A=not available

Table 5-2: Default NMEA messages

5.2 SiRF binary

A complete description of each binary message is contained in the SiRF Binary Protocol

reference manual.

5.3 Software functions and capabilities

The Jupiter 20 has additional capabilities to the standard SiRF GPS software:

• GPS fix output – GPIO10 Low for 2D or 3D fix
• GPIO command control via serial commands – for use by customer
• Gyro, wheel‑tick and forward reverse inputs (DR only)
• Antenna power monitor messages and power control O/P (non DR only)
• PTTK, DR – DR status messages in NMEA protocol format

Refer to the Jupiter 20 Integrator’s manual (LA000508) for further information.