Data Sheet

GPS Module
L80 GPS Protocol Specification
L80_GPS_Protocol_Specification Confidential / Released 15 / 41
2.7. GPTXT
This message is used to ouput information.
Example:
$GPTXT,01,01,02,ANTSTATUS=OK*3B
Field
Description
$
Each NMEA message starts with ‘$’
GPTXT
Message ID
XX
Total number of messages in this transmission. (01~99)
YY
Message number in this transmission. (01~99)
ZZ
Severity of the message
‘00’= ERROR
‘01’= WARNING
‘02’= NOTICE
‘07’= USER
Text message
Output information（Note）
*
End character of data field
Checksum
Hexadecimal checksum
<CR><LF>
Each of message
L80 module supports automatic antenna switching function. The GPTXT sentence can be used to identify
the status of external active antenna. The status of external active antenna is listed as below:
1. If ANTSTATUS=OK, it means external active antenna is connected and the module will use external
active antenna.
2. If ANTSTATUS=OPEN, it means open-circuit state is dectected and the internal antenna is used at
this time.
3. If ANTSTATUS=SHORT, it means short circuit state is dectected and the internal antenna is used.
NOTE
Quectel
Confidential