TM 55-1510-219-10 f. INSERT/ADVANCE pushbutton - Press. (Observe  that  extra  precision  display  related  to  the resident value of northing and easting, to nearest meter, appears in left and right data displays, respectively.) NOTE UTM data may be loaded in any order. Until   final   fourth   entry,   actuation   of INSERT/ADVANCE pushbutton without a  prior  data  entry  will  cause  normal and   extra   precision   UTM   data   to   be alternately displayed. g. 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 right data display as keys are pressed.) h. INSERT/ADVANCE pushbutton - Press. (Observe pushbutton remains illuminated.) i. 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  normal  value regardless of which key (N/S) is pressed to initiate entry. The normal entry establishes hemisphere.) j. INSERT/ADVANCE pushbutton - Press. (Observe  that  during  the  next  1  to  3  seconds,  the computer  converts  input  into  latitude  and  longitude  for storage in memory.  The stored value is again converted back to UTM for display to operator. The INSERT/ADVANCE pushbutton light extinguishes.  The conversion routines may cause data 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 al- ways   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 normal display and "995"   in   extra   precision   display.      In other    words,    there    is    no    rounding between the two displays. k. INSERT/ADVANCE pushbutton - Press. (Observe  right  data  display  indicates  last  previously inserted altitude, and left data display is blank.) l. To  indicate  the  following load   is   altitude   -   Press keys "4" or "6". (Observe INSERT/ADVANCE pushbutton light illuminates.) m. To  load  altitude  in  feet  - Press keys in sequence. (Example:  1230  ft  =    1230.    Observe  that  numbers appear in right data display as keys are pressed.) NOTE Altitude inputs are limited to 15,000 feet. n. INSERT/ADVANCE pushbutton - Press. (Observe pushbutton light extinguishes.) o. INSERT/ADVANCE pushbutton - Press. (Observe    that    left    data    display    indicates    last previously inserted channel number, and right display is blank.) p. To  indicate  following  load is  channel  number  -Press keys "2" or "8" (Observe INSERT/ADVANCE pushbutton light illuminates.) q. To load channel number - Press keys in sequence. (Example:  109  =  109.    Observe  number  appears  in left data display as keys are pressed.) 3-55