User's Manual

Atlas PT Technical Manual
42
repeater, it is the signal lever of the repeated message.
14
Speed
The speed of the device in km/hour, 0-255
15
Heading
The heading of the device 0-360 degrees
16
Status
Status flags received from the device. Not all products
support generating all status flag codes.
NULL means no alerts.
“P” means a proximity alert.
“M” means man-down alert
“A” General alert, usually due to pressing an alert button
“C” Critical alert, usually due to pressing and holding
alert button
“D” Alert acknowledge, set by the ACK1 command after
the unit enters alert
“T” External battery removed flag, indicating that a
battery was attached but was removed for longer than
five minutes
“I” Impact alert
“V” Vibration
“S” Service required on product
17
Spare
A spare field. May be used for UTC date in the future.
Typically NULL.
18
*
The “*” NMEA end-of-message identifier.
19
Checksum
The NMEA 0183 checksum.
Example Sentence:
$PRAVE,0001,0001,3308.9051,-11713.1164,195348,1,10,168,31,8.1,3,-83,0,0,,*66
This example shows a unit at 33° 8.9051 north latitude and 117° 13.1164 east
longitude. It is not moving (0 speed). Its signal strength was -83dBm. Its altitude is 168
meters.
12. Maintenance
The following maintenance precautions are required to keep the GPS transponder
under manufacturer’s warranty.