Trimble Outdoors 132RS Manuel d'utilisateur télécharger pdf (Page 105)

DSM 132/132RS Receiver User Guide 105

NMEA-0183 Messages C

Table C.3 explains the fields in the ZDA example shown in

Figure C.5.

Fields 5 and 6 together give the total offset. Local time is 5 hours and

15 minutes earlier than

GMT.

C6.1 Symbols and delimiters

All messages follow the NMEA-0183 Version 2.1 format, in which

symbols and delimiters identify or separate the message data.

NMEA-0183 messages always:

• begin with a dollar sign (

$) followed by a talker ID code (for

example GP) and a message

ID code (for example, ZDA)

• end with a carriage return and line feed

C6.2 Checksum values

Newer Trimble receivers conform to the NMEA-0183 Version 2.1

format, in which checksums are mandatory for all messages.

Table C.3 Fields in an NMEA-0183 message — ZDA

Field Data Description

1 220320.0 Time in

UTC

2 26 Day (01 to 31)

3 06 Month (01 to 12)

4 1997 Year

5 -5 Local time zone offset from

GMT

(in hours

00 to ±13 hours)

6 15 Local time zone offset from

GMT (in minutes)

1 2 ... 100 101 102 103 104 105 106 107 108 109 110 ... 141 142

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Trimble Outdoors 132RS Manuel d'utilisateur Page 105