• 0 Automatic (2D/3D)
• 1 Single Satellite (Time)
• 2 Not used
• 3 Horizontal (2D)
• 4 Full Position (3D)
• 5 DGPS Reference
• 6 Clock Hold (2D)
• 7 Overdetermined Clock
• 8 Not Used

• 0 Doing fixes
• 1 Don’t have GPS time
• 2 (3) PDOP is too high
• 3 (8) No usable sats
• 4 (9) Only 1 usable sat
• 5 (10) Only 2 usable sats
• 6 (11) Only 3 usable sats
• 7 (12) The chosen sat is unusable
• 8 (16) TRAIM rejected the fix

Number in parenthesis is the actual code for the particular field.

• 0 Normal
• 1 Power-Up
• 2 Auto Holdover
• 3 Manual Holdover
• 4 Recovery
• 5 Not Used
• 6 Disciplining disabled
• 7 Not Used
• 8 Not Used

• 0 Phase locking
• 1 Oscillator warming up
• 2 Frequency locking
• 3 Placing PPS
• 4 Initializing loop filter
• 5 Compensating OCXO
• 6 Inactive
• 7 Not used
• 8 Recovery mode

Other useful information are the alarms. There are in two categories: Critical and Minor

• ROM Checksum Error
• RAM Check Failed
• PowerSupply Failed
• FPGA Check Failed
• VCO At Rail

• VCO Near Rail
• Antenna Open
• Antenna Shorted
• Not Tracking Satellites
• Not Disciplining
• Survey In Progress
• No Stored Position
• Leap Second Pending
• Test Mode