Product Info

GLOBALSTAR PROPRIETARY AND CONFIDENTIAL INFORMATION
Use or disclosure of data contained on this sheet is subject to the restrictions in the Distribution Statements on the title page of this
document.
06/18/20 Subject to Change without Notice P a g e | 51
12 - 14
0-23
Longitude
24-Bit Signed Integer encoded Longitude. 360 degrees of
longitude in signed binary. Byte 6 is MSB. Positive longitude
corresponds to East longitudes.
15 - 16
0-15
CRC
Will contain the response CRC
Command: AA 05 25 76 B2
Response: AA 0C 25 2B 48 5B BF F0 2B 00 2E A1
Latitude = 0x2B485B (30.4331), Longitude = 0xBFF02B (-90.0870)
4.2.2.24 “Set Lifetime” command
This command sets the lifetime of the device. Upon getting its first GPS fix after the “set lifetime” command is issued, the device will
calculate an end of life date based on the value sent in this command.
Set Lifetime Command
Byte
Bits
Parameter
Description
0
0 – 7
Leader
Always a value of 0xAA.
1
0 – 7
Length
0x06
2
0 – 7
Command Code.
0x70 = Set Lifetime Command
3
0 - 7
Time to live,
expressed in
Months
Valid values are the entire span of the byte
minus 1. 0 to 254 months (restrictions, if any
TBD). See description below for how the end
date is calculated and interpreted.
4 - 5
0 – 15
CRC
This response is sent to response to a “Set Lifetime” command.
Byte
Bits
Parameter
Description