Cayman Systems 2E-H-W Instrukcja Użytkownika Pobierz pdf (Strona 18)

NMEA Manual based on MediaTek chipset - Manual

2.19 PMTK223 SET ALWAYS LOCATE DEFAULT CONFIGURATION

Command purpose:

Set Always Locate default configuration.

Command number: 223

DataField:

$PMTK223,SV,SNR,Extension threshold, Extension gap

SV: Default value 1, Range 1 ~4

SNR: Default value 30, Range 25 ~30

Extension threshold = 180000 msec, Range: 40000 ~180000

Extension gap = 60000 msec, Range 0 ~3600000

(Extension gap is the limitation between neighbor DEE)

Example:

$PMTK223,1,25,180000,60000*38<CR><LF>

Reply:

$PMTK001,223,3*33<CR><LF>

This message applies only for MT333X based receivers IT530, IT530M, UC530 and UC530M.

2.20 PMTK225 SET PERIODIC MODE

Command purpose:

Periodic Power Saving Mode Settings: (See following chart)

In RUN stage, the GPS receiver measures and calculates positions.

In SLEEP stage, the GPS receiver may enter two different power saving modes. One is “Periodic Standby Mode”,

and another is “Periodic Backup Mode”. Due to hardware limitations, the maximum power down duration

(SLEEP) is 2047 seconds. If the configured “SLEEP” interval is larger than 2047 seconds, the GPS firmware will

automatically extend the interval by software method. However, the GPS system will be powered on for the

interval extension and powered down again after the extension is done.

With mode (type) AlwaysLocate

, you can leave other parameters set to zero, because the wake and sleep times

are controlled automatically.

Command number: 225

DataField:

$PMTK225, Type, Run time, Sleep time, Second run time, Second sleep time*CS<CR><LF>

Type: Set operation mode of power saving

‘0’: Back to normal mode

‘1’: Periodc backup mode

‘2’: Periodic standby mode

‘4’: Perpetual backup mode

‘8’: AlwaysLocate

standby mode

‘9’: AlwaysLocate

backup mode

Run time: Duration [msec] to fix for (or attempt to fix for) before switching from running mode back to a

minimum power sleep mode. With AlwaysLocate

you cannot set run time, since sleep and wakeup is controlled

automatically.

‘0’: Disable

>= ‘1000’: Enable

[Range: 1000~518400000]

UBX-13003181 - R16 Early Production Information Page 18 of 41

1 2 ... 13 14 15 16 17 18 19 20 21 22 23 ... 40 41

Komentarze do niniejszej Instrukcji

Brak uwag

Cayman Systems 2E-H-W Instrukcja Użytkownika Strona 18

Komentarze do niniejszej Instrukcji

Powiązane produkty i podręczniki dla Networking Cayman Systems 2E-H-W