ANCD Loads and Updating

TM 11-5820-890-10-8

4.7e.

ANCD Loads and Updating

ACTIVE DATA

Three SOI editions provide a using unit thirty days of SOI information for

active use. One loadset provides the using unit with 30 days of

COMSEC key and FH data.

RESERVE DATA

One reserve loadset provides the using unit 30 additional days of

COMSEC key and FH data. Two reserve SOI editions provide SOI

information good for the 30 days the active loadset is being used.

ANCD LOAD

By loading one active loadset (30 days), three active SOI editions (30

days), one reserve loadset (30 days), and two reserve SOI editions into

unit ANCDs, there are three results. The unit has all the active data,

loadset and SOI, it needs for 30 days. At the end of 30 days, the unit

changes to the reserve loadset and the last SOI edition and continues

to operate without interruption. The unit then has another thirty days

during which to reload ANCDs with new loadsets and SOI editions in

UPDATE CYCLE

By making full use of the ANCD memory capacity, it is thus possible to

minimize the impact of periodic updating on operational units. With an

update requirement only every 30 days, and a thirty-day period in

which to accomplish the update, there should be little or no impact on

mission operations.

4-23