3.16.5 COMPUTER DISPLAY UNIT (CDU) IP1552G
The CDU IP1552G (fig 3-24.1) used in the integrated
navigation system equipped aircraft has five additional
FABs to assist the operator with aircraft systems func-
tions. The additional FABs are: TGT, CODE, DATA, PGM,
and WPN. Data upload can be accomplished manually
through the CDU alphanumeric keyboard or electronically
through the Data Transfer Unit (DTU)). Functions of each
FAB is described in table 3-22. VAB functions are de-
scribed with each page/sub page display description.
3.16.6 Navigation System Initialization.
electrical power is applied to the helicopter, the CDU is
powered and the NAV top level page is displayed as
shown in figure 3-25.
If DTC overwrites active FLYTO or TGT, it
is necessary to de-select and re-select ac-
tive FLYTO or TGT.
a. At initial power-up mode of the aircraft, power is au-
tomatically applied to the EGI. The HARS is powered
when an alignment mode is selected, and the DNS is au-
tomatically powered during the HARS startup sequence.
The CDU will default to the top level NAV page and will be
displayed as shown in figure 3-25.
UP AND DOWN
TGT FAB (EGI)
CODE FAB (EGI)
DATA FAB (EGI)
PGM FAB (EGI)
FDLS FIXED ACTION BUTTON
CDU IP1552G, Used with AN/ASN-137 DNS
IP1552G CDU Control and Display Functions
Display formats are organized as pages with 8 display lines; the bottom line is always used
as the scratchpad for entering or editing data.
Alphanumeric keyboard is used for entering data.
Move the cursor one space left or right, as appropriate, per keystroke. When pressed
constantly, will move the cursor at about 4 character positions per second.
Scroll through the waypoint dictionary pages, one page per keystroke. When constantly
pressed, will scroll through all dictionary pages at about two pages per second.