User`s guide

Chapter 5 - I/O Commands
SYSTEM POWER-ON FAILURE (@@Sz)
Motorola Binary Format
@@SzcC<CR><LF>
where:
c = constant equal to 0
C = checksum
Message length: 8 bytes
Complete hex string indicating a Power-On Failure:
0x40 40 53 7A 29 0D 0A
Motorola GPS Products - M12+ User's Guide Revision 6.X 09FEB05
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