TM  1-1520-240-10 3-3-32            NOTE In  this  mode,  the  DGNS  provides  real-time landing guidance information to the HSI indi- cator. To display course deviation indication (CDI) on VSI and HSI, depress then release the DPLR GPS button on the HSI Mode Se- lect Panel. j.  Procedure for Transferring Stored Destination/Tar- get Data From One Location to Another. The following procedure allows the operator to transfer stored destination/target data from one destination/tar- get location to another destination location. The trans- ferred data consists of destination name/ICAO identifier, location, variation, and landing information. For illustra- tive purposes only, it is assumed that the operator wants to put the coordinates of stored target 97 into the location for destination 12. (1) Set DISPLAY switch to WP/TGT position. (2) Depress keys 9 then 7. (3) Depress KYBD key, depress keys 1 then 2. NOTE Location name/ICAO identifier, variation, and landing data may be deleted by first display- ing the waypoint, depressing KYBD key, then the ENT key. (4) Depress ENT key. k.  Operation During and After a Power Interruption During a power interruption, the stored destination and target data and present position are retained by non-vol- atile RAM inside the CDU. This makes it unnecessary to reenter any navigation data power returns. GPS satellite data are also retained by a rechargeable battery inside the SDC. This makes it unnecessary to reload the crypto key or wait for the collection of any almanac. Navigation will be interrupted during the absence of power; however the present position will be updated when the GPS data becomes valid provided the DGNS mode has not been selected as Doppler only. The pilot will have to re-enter the GPS operating mode (M or Y) using a single key (5 or 9). In the event the CDU is initialized, the display will indicate only EN when the CDU is operated. This is an indication to the operator that previously stored data has been lost and that spheroid/variation, destinations, and calibration data must be entered. Present position needs to be en- tered only if Doppler only mode has been selected. The KYBD key must be depressed to clear the EN. The computer initializes to the following: operating mode to combined, present position variation to E000.0, des- tinations  and  associated  variations  to  a  non-entered state, wind speed (water motion) and sea current speed to    000,    DATUM:    00,    present    position    to    N45_ 00.00’E000_ 00.00’ (until updated by GPS), target store location to 91, along track calibration correction to 00.0 percent, and magnetic compass deviation corrections to 000.0 degrees. The following data must be entered: (1) Depress KYBD key. (2) Set MODE switch to OFF momentarily, to LAMP TEST for approximately one second, and then to MGRS or LAT/LONG. (3) Select GPS or Y mode. (4) Select DGNS operating mode if other than combined. (5) Enter datum. (6) Enter present position if Doppler only has been selected. (7) Enter  each  destination  and  its  associated variation. l.  Procedure for Display Aircraft heading, Pitch, and roll (Maintenance Function) (1) Set the CDU mode switch to test and ob- serve the CDU test mode display. (2) After the Doppler test is completed depress the ENT key. (3) Observe the CDU display. The top indicates in degrees and tenths of a degree, aircraft system head- ing, pitch, and roll. Table  3-3-4.   Map Datum Codes. Map Datum Data Code ADINDAN 01 ARC1950 02 AUSTRALIAN GEODETIC 1966 03 BUKIT RIMPAH 04 CAMP AREA ASTRO 05 DIAKARTA 06 EUROPEAN 1950 07