Digilent 410-237P Bedienungsanleitung PDF herunterladen (Seite 3)

PmodGPS Reference Manual

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command list, or see their FAQ for how to

change the baud rate.

Table 1: Interface Connector Signal

Descriptions

Connector J1

Pin

Signal

Description

1

3DF

3D-Fix Indicator

2

RX

Receive

3

TX

Transmit

4

1PPS

1 Pulse Per Second

5

GND

Power Supply Ground

6

VCC

Power Supply (3.3v)

Connector J2

Pin

Signal

Description

1

~RST

Reset (active low)

2

RTCM

DGPS data pin (contact

GlobalTop for use)

Note: Refer to the GlobalTop Gms-U1LP

datasheet at www.gtop-tech.com for more

information on the GPS module interface.

Output Sentences

Table 2: GGA

$GPGGA,064951.000,2307.1256,N,12016.4438,

E,1,8,0.95,39.9,M,17.8,M,,*65<CR><LF>

Example

Description

$GPGGA

Message ID

064951.000

UTC Time (hhmmss.sss)

2307.1256

Latitude (ddmm.mmmm)

N

N/S indicator

12016.4438

Longitude (dddmm.mmmm)

E

E/W indicator

1

Position Fix Indicator

8

Satellites used

0.95

HDOP

39.9

MSL Altitude

M

Units

17.8

Geoidal Separation

M

Units

Age of Diff. Corr.

*65

Checksum

<CR><LF>

End of message indicator

Table 3: GSA

$GPGSA,A,3,29,21,26,15,18,09,06,10,,,,,

2.32,0.95,2.11*00<CR><LF>

Example

Description

$GPGSA

Message ID

A

Mode1 (see GlobalTop manual)

3

Mode2 (see GlobalTop manual)

29

Satellite used (CH1)

21

Satellite used (CH2)

….

Satellite Used (Ch12)

2.32

PDOP

0.95

HDOP

2.11

VDOP

*00

Checksum

<CR><LF>

End of message indicator

Table 4: GSV

$GPGSV,3,1,09,29,36,029,42,21,46,314,43,

26,44,020,43,15,21,321,39*7D<CR><LF>

Example

Description

$GPGSV

Message ID

3

Number of Messages

1

Message Number

09

Satellites in View

29

Satellite ID (CH1)

36

Elevation (CH1)

029

Azimuth (CH1)

42

SNR (C/No)

….

15

Satellite ID CH(4)

21

Elevation (CH4)

321

Azimuth (CH4)

39

SNR (C/No)

*7D

Checksum

<CR><LF>

End of message indicator

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