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12 - 14
0-23
15 - 16
0-15
Command:
AA 05 25 76 B2
Response:
AA 0C 25 2B 48 5B BF F0 2B 00 2E A1
Latitude
= 0x2B485B (30.4331),
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.
Byte
0
1
2
3
4 - 5
This response is sent to response to a "Set Lifetime" command.
Byte
Bits
Use or disclosure of data contained on this sheet is subject to the restrictions in the Distribution Statements on the title page of this
06/18/20
Longitude
CRC
Longitude
Bits
Parameter
0 – 7
Leader
0 – 7
Length
0 – 7
Command Code.
Time to live,
0 - 7
expressed in
Months
0 – 15
CRC
Parameter
GLOBALSTAR PROPRIETARY AND CONFIDENTIAL INFORMATION
Subject to Change without Notice
24-Bit Signed Integer encoded Longitude. 360 degrees of
longitude in signed binary. Byte 6 is MSB. Positive longitude
corresponds to East longitudes.
Will contain the response CRC
= 0xBFF02B (-90.0870)
Set Lifetime Command
Description
Always a value of 0xAA.
0x06
0x70 = Set Lifetime Command
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.
Description
document.
P a g e | 51
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