User`s guide

Chapter 5 - I/O Commands
12 CHANNEL SELF-TEST MESSAGE (@@Ia)
Motorola Binary Format
Request Self-Test Message (12 Channel):
@@IaC<CR><LF>
where:
C = 0x28
Message length: 7 bytes
Complete hex string to request a Self Test:
0x40 40 49 61 28 0D 0A
Response to above command:
@@IasssC<CR>LF>
where:
sss = self test results
(msb) Bits 23-22: Antenna Sense
00 = OK
01 = Overcurrent
10 = Undercurrent
11 = No bias voltage present
Bit 21: RTC comm & time
Bit 20: Temperature Sensor
Bit 19: spare
Bit 18: RAM
Bit 17: ROM
Bit 16: 1 KHz presence
Bit 15: spare
Bit 14: Temperature Sensor
Data Checksum
Bit 13: Oscillator Data Checksum
Bit 12: Manufacturing Data Checksum
Bit 11: Channel 12 correlator test
Bit 10: Channel 11 correlator test
Bit 9: Channel 10 correlator test
Bit 8: Channel 9 correlator test
Bit 7: Channel 8 correlator test
Bit 6: Channel 7 correlator test
Bit 5: Channel 6 correlator test
Bit 4: Channel 5 correlator test
Bit 3: Channel 4 correlator test
Bit 2: Channel 3 correlator test
Bit 1: Channel 2 correlator test
Bit 0: Channel 1 correlator test
C = checksum
Message Length: 10 bytes
Motorola GPS Products - M12+ User's Guide Revision 6.X 09FEB05
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