TM 55-1510-220-10 2. Thumbwheel - Set  to waypoint number to be loaded. NOTE UTM data may be loaded in any order and,    until    entry,    a    value    may    be reloaded. 3. To load zone and easting Press keys in sequence, starting with "E".  Example: Zone    16,    425    km    East    =    E16425. Observe    that    zone    and    easting    in kilometers    appear    in    the    right    data display as keys are pressed. 4. INSERT/ADVANCE pushbutton Press. Observe pushbutton annunciator is illuminated. 5. To load northing, press keys in sequence,  starting  with  "N"  or  "S"  to indicate    north    or    south    hemisphere. Example:  4749  km  North  =  N  4749. Observe that northing kilometers appear  in  the  left  data  display  as  keys are pressed. 6. INSERT/ADVANCE pushbutton Press. Observe pushbutton annunciator remains illuminated. 7. INSERT/ADVANCE pushbutton Press. Observe that an extra precision display related   to   resident   value   of   northing and    easting,    to    the    nearest    meter, appears  in  left  and  right  data  displays, respectively. 8. To  load  extra  precision  easting  value Press   keys   in   sequence   starting   with "E".    Example:  297  m  East  =  E  297. Observe  that  easting  meters  appear  in the    right    data    display    as    keys    are pressed. 9. INSERT/ADVANCE pushbutton Press. Observe pushbutton annunciator remains illuminated. .  To load extra precision northing value  Press  keys  in  sequence,  starting with   "N"   or   "S".      Example:   901   m North = N 901.  Observe that northing meters   appear   in   left   data   display   as keys  are  pressed.    The  value  is  always added to the normal value regardless of which  key  (N/S)  is  pressed  to  initiate the entry.  The normal entry establishes the hemisphere. 11. INSERT/ADVANCE pushbutton Press. Within   3   seconds   computer   converts input   into   latitude   and   longitude   for storage in memory.  The stored value is again   converted   to   UTM   for   display. The  INSERT/  ADVANCE  pushbutton annunciator  extinguishes.    Conversion roundings may cause displays to change by up to 10 m. NOTE The computer will convert coordinates in overlap area; however, data display values will reference appropriate zone. NOTE The  "W"  key  may  be  used  to  initiate easting entries; however, the computer   will   always   interpret   such entries  as  an  "E"  input.    "E"  will  be displayed in normal UTM data display. NOTE The  extra  precision  values  added  to normal values.  As an example, South 4,476.  995 m will display "4476(s)" in the normal display and "995" in extra precision   display.      In   other   words, there  is  no  rounding  between  the  two displays. 12. Repeat   steps   2   through      II   for   each waypoint to be loaded. Change 2    3-55