TM 55-1510-219-10 6. INSERT/ADVANCE push- button - Press. (Observe pushbutton light remains illuminated.) 7. INSERT/ADVANCE push- button - 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 push- button - Press. (Observe pushbutton light remains illuminated.) 10. 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 push- button - 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 light extinguishes. Conversion  routines  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  are  always 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 11 for each waypoint to be loaded. NOTE A  load  cycle  may  be  terminated  prior to    insertion    of    all    four    values    by moving data selector or thumbwheel. (b) Insertion of geographic waypoint coordinates: 1. Data selector - L/L WYPT. Data displays indicate last coordinates inserted into the selected waypoint. 2. Thumbwheel - Set to waypoint number to be loaded. 3. To  load  latitude  -  Press  keys in  sequence,  starting  with  "N" or   "S"   to   indicate   north   or south. (Example:  42°54.0'  North  =  N  4  2  5  4  0.    Observe that    INSERT/ADVANCE    pushbutton    light    illuminates when  first  key  is  pressed,  and  latitude  appears  in  left data display as keys are pressed.) 4. INSERT/ADVANCE push- button - Press. (Observe pushbutton light extinguishes.) 5. To      load   longitude      -   Press keyboard   keys   in   sequence, starting with "W" or "E" indicating west or east. (Example: 87°54.9' West = W 8 7 5 4 9.  Observe that    INSERT/ADVANCE    pushbutton    light    illuminates when   first   key   is   pressed,   and   longitude   appears   in display as keys are pressed.) 6. INSERT/ADVANCE push- button - Press. (Observe pushbutton light extinguishes.) 7. If desire to insert extra precision    coordinate    data    - Press INSERT/ ADVANCE pushbutton. (Observe   that   arc-seconds   for   loaded   latitude   and longitude,  to  nearest  tenth  of  a  second,  appear  in  left and right data displays, respectively.) 3-53