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Packb wrappter format – NavCom Sapphire Rev.J User Manual

Page 255

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Sapphire Technical Reference Manual Rev. J

255

[OUTPUT] WRAPPED_RTCM22,ontime,1,2

User can still schedule individual wrapped messages

[WRAPPEDRTK]OFF

Disables all wrapped messages on the previously set port

1.211.1

PackB Wrappter Format

In contrast with the normal PackB wrapper, the [WRAPPEDRTK] message does NOT encode
the corrections by XORing with 0x55. This is done to make things easier on the user. The
wrapper looks like this:

Command:

[PACKB] L

0

L

1

~L

0

~L

1

T

0

T

1

T

2

T

3

T

V

C

t

P _MSG_ *C

0

C

1

C

2

C

3

Keyword

Description

Size (byte)

[PACKB]

PackB Header

7

L

0

L

1

Length of msg (not including [PACKB])

2

~L

0

~L

1

Inverse of length

2

T

0

T

1

T

2

T

3

TOW (ms)

4

T

V

Time version (unused)

1

C

t

Correction Type
0=unknown, 1=NCT, 2=RTCM2, 3=RTCM3, 4=CMR

1

P

Logical Port (unused)

1

_MSG_

RTK Message

??

*C

0

C

1

C

2

C

3

CRC

5