Fixposition Documentation
Fixposition Documentation
Breadcrumbs

NMEA-GN-ZDA

Description:

Standard NMEA: Time and date

Configuration:

  • NMEA-GN-ZDA_GNSS for combined (average) output from both receivers

    • The time is the average between GNSS1 and GNSS2.

  • NMEA-GN-ZDA_GNSS1 for output from GNSS 1 receiver

    • This is the standard NMEA ZDA for GNSS1.

  • NMEA-GN-ZDA_GNSS2 for output from GNSS 2 receiver

    • This is the standard NMEA ZDA for GNSS2.

  • NMEA-GN-ZDA_FUSION for output from Fusion

    • The time is from fusion.

  • NMEA-GN-ZDA_GNSS1TOS for top-of-second 1Hz strict NMEA output from GNSS 1 receiver

    • Like NMEA-GN-ZDA_GNSS1, but only the top-of-second message

    • Always strict NMEA (the high-precision NMEA configuration has no effect)

    • The intended use is for time sync applications that use the PPS output of GNSS1

    • See also NMEA-GN-RMC_GNSS1TOS and NMEA-GN-GGA_GNSS1TOS

  • NMEA-GP-ZDA_GNSS, NMEA-GP-ZDA_GNSS1, NMEA-GP-ZDA_GNSS2, NMEA-GP-ZDA_FUSION and NMEA-GP-ZDA_GNSS1TOS

    • Legacy messages. These messages also have GN constellation but the talker ID is “GP”

Example message: 

$GNZDA,090924.00,10,10,2023,00,00*63\r\n

Example message with non-standard high-precision fields: 

$GNZDA,090411.0001,10,10,2023,00,00*69\r\n

Message fields:

#

Field

Format

Unit

Nullable

Example

Description

1

time

hhmmss.ss(ss)

-

Y

151227.40

UTC time (hours, minutes and seconds)

2

day

Integer (01-31)

-

Y

04

Day (UTC)

3

month

Integer (01-12)

-

Y

01

Month (UTC)

4

year

Integer (yyyy)

-

Y

2024

Year (UTC)

5

local_hr

Integer (00-±13)

hr

Y

-3

Local zone hours, always 00 (= UTC)

6

local_min

Integer (00-59)

min

Y

00

Local zone minutes, always 00 (= UTC)

Notes:

  • These messages does not contain any information that would let one tell them apart. Do not enable more than one of these in the same port.

  • This message is according to NMEA 0183 v4.11 (and erratas).