Airmar LB150 User Manual

Page 54

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LB150 WeatherStation Technical Manual revision 0.013

Proprietary and Confidential

PRELIMINARY - DRAFT

51

Notes

The factory default settings are as follows:

Sentence ID Enabled by default? Default Transmission Interval

DTM

10

GGA

10

GLL

10

GSA

10

GSV

10

HDG

5

HDT

5

MDA

10

MWD

10

MWV (R)

5

MWV (T)

10

RMC

10

VTG

10

VWR

10

VWT

10

XDR (A)

10

XDR (B)

10

ZDA

10

Note that the MWV sentence appears in two forms: relative (R) and theoretical (T).

These two forms are enabled separately.
Also note that the XDR sentence appears in two forms: A and B. These two forms are

also enabled separately.
If either of fields <3> or <4> is a null field, then that field will remain unchanged from its

previous value.

The selections as to which sentences are enabled for transmission, and the rate at which

each sentence is transmitted, are stored in nonvolatile EEPROM memory within the

LB150 WeatherStation unit. On power up, these settings are copied from EEPROM into

a working copy in RAM memory. It is the working copy in RAM that determines the

behavior of the WeatherStation, with regard to the transmission of sentences.

Any changes to these settings using the $PAMTC,EN,<2>,<3>,<4> command only affect

the working copy in RAM. When power is lost, the changes to the working copy in

RAM will be lost.

The

$PAMTC,EN,S command causes the contents of the current working copy in RAM

to be saved to EEPROM. The saved settings will then be restored to RAM each time

power is applied to the unit.

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