af

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                         Field Calibration Procedure
Choose calibration method:
     a.  Remove hard iron error (single cycle) only.
     b.  Remove hard and soft iron error (single + double cycle).
     c.  Calibration for a single tilt orientation (single + double cycle).
     d.  Help.
     e.  Quit.
c


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                         Field Calibration Procedure
          Calibration for Constant Tilt Applications (e.g., Rivers)

Select one:
     a.  Start calibration procedure.
     b.  Zero calibration coefficients (only constant tilt coefs).
     c.  Display correction coefficients.
     d.  Instructions.
     e.  Quit.
a


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                    RDI Compass Error Estimating Algorithm


   Press any key to start taking data after the instrument is setup.



Rotate the unit in a plane until all data samples are acquired...
   rotate less than 5ø/sec.  Press Q to quit.

 N       NE       E        SE       S       SW        W        NW       N
 ^                ^                 ^                 ^                 ^
 ***************************************************<********************
Calculating compass performance ...                               


                          >>> Total error:   0.7ø <<<

Press D for details or any other key to continue...
                                                               










HEADING ERROR ESTIMATE FOR THE CURRENT COMPASS CALIBRATION:

   OVERALL ERROR:
      Peak Double + Single Cycle Error (should be < 5ø):  ñ 0.69ø

   DETAILED ERROR SUMMARY:
      Single Cycle Error:                                 ñ 0.17ø
      Double Cycle Error:                                 ñ 0.57ø
      Largest Double plus Single Cycle Error:             ñ 0.75ø
      RMS of 3rd Order and Higher + Random Error:         ñ 0.42ø

      Orientation:    Down
      Average Pitch:   3.82ø         Pitch Standard Dev:    0.60ø
      Average Roll:    0.04ø         Roll Standard Dev:     0.95ø

Successfully evaluated compass performance for the current compass calibration.


Press C to display Percent Horizontal Field Conponents
     Relative to Calibration or any other key to continue....


   Percent Horizontal Field Component Relative to Calibration:
           a0 + a1*cosé + b1*siné + a2*cos2*é + b2*sin2*é
          a0 =                                             54.862%
          a1 =                                             -0.159%
          b1 =                                              0.049%
          a2 =                                              0.068%
          b2 =                                             -0.546%

          OneCycleK =                                       0.002 tw_rad
          Add MagVar to get "OneCycOffset" =              162.945ø
Press any key to continue...
Calibration parameters have been updated in NRAM.

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