Spectra-precision ProMark 800 Reference Manual Manual de usuario descargar pdf (Pagina 407)

100

101

395

Output Message Library

When for example after a cold start, the receiver has no

correct time tag, the PBN message is output with a fixed

“zero” time tag.

Unlike all the other position messages, the position provided

in a PBN message cannot be an RTK position. It can only be

a standalone, SBAS or DGNSS position.

NOTE: GPS time is used when GPS is defined as the primary

system, and GLONASS time is used when GLONASS is

defined as the primary system.

Reminder on How

to Output PBN

Messages

Use the $PASHS,RAW command with the syntax below:

$PASHS,RAW,PBN,<port_ID>,ON,<Rate>

For more details on the $PASHS,RAW command, refer to the

Set Command Library Chapter.

As an example, the command below will output PBN

messages on port A at a rate of 1 second:

$PASHS,RAW,PBN,A,ON,1

SBA,DAT: SBAS Data Message

Provided the command below has been run beforehand,

$PASHS,RAW,SBD,<port_ID>,ON

... the SBA,DAT message is output in response to:

$PASHQ,SBD, <port_ID>

...and is in the form:

Double navy 8 Station position: ECEF-Y (m)

Double navz 8 Station position: ECEF-Z (m)

Float navt 4 Clock offset (m)

Float navxdot 4 Velocity in ECEF-X (m/s)

Float navydot 4 Velocity in ECEF-Y (m/s)

Float navzdot 4 Velocity in ECEF-Z (m/s)

Float navtdot 4 Clock drift (m/s)

Unsigned short pdop 2 PDOP multiplied by 100

Unsigned short checksum 2

The checksum is computed by breaking

the structure into 27 unsigned shorts, add-

ing them together, and taking the least sig-

nificant 16 bits of the result.

Total of bytes 56

Type Name Size Contents

1 2 ... 402 403 404 405 406 407 408 409 410 411 412 ... 427 428

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