I/O PORT DATA INPUT/OUTPUT
Characters Definition
S08 No useable satellites.
S14 Oscillator stabilizing.
S15 Position Survey
S16 Flywheel Mode
Note: If a Status Code is produced other than those listed above, the error is undefined.
Table 4-3
Error Codes
Characters Definition
E00 System check OK.
E02 Processor error.
E04 Ant. Undercurrent
E08 Ant. Overcurrent
• If the user inputs $f (HEX 24/HEX 66).
• The unit will respond with the following:
3 digits of day of year.
2 digits of hour.
2 digits of minute.
2 digits of second.
3 digits of milliseconds (space).
3 character status code (space).
3 character error code (space).
Up to 4 satellite vehicle numbers CR/LF.
Each satellite vehicle is identified by its PRN I.D.
Example: 056.12:13:45.768 S00 E00 03 13 20 26
It is the 56
th
day of the year (February 25
th
).
The time is 12 hours, 13 minutes, 45 seconds and 768 milliseconds.
The unit is doing GPS corrections.
The system check is OK.
The unit is tracking satellites 3, 13, 20, and 26.
• If the user inputs $ = (HEX 24/HEX 3D).
Symmetricom Inc ET6xxx ExacTime GPS TC & FG (Rev C) 4-5
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