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has this subscriber ID.) RAPID key to display the highest priority new message
(3) Authentication. Automatic authentication when activated.
tables are accessed from this page. There are two
tables, one transmit and one receive, that hold 100 (2) AIR MSN (Air Mission) programs the RAPID
authentications each. In the event the number of key to access the currently selected pre-programmed
authentications remaining reaches 20 or less, the AIR MISSION SUMMARY page.
advisory message AUTH LOW will display on the MFD.
This must be loaded prior to each mission if they have (3) ARTY MSN (Artillery Mission) programs the
been depleted or the SOI has changed. As an RAPID key to access the currently selected preauthentication
is used, it is automatically deleted and programmed ARTILLERY MISSION SUMMARY page.
the computer steps to the next code. The table can
only be used on nets that have been selected as NONE (4) MAYDAY programs the RAPID key to access
on the authentication select on the net parameter page. the MAYDAY SUMMARY page.
If, when using automatic authentication, usually only
with TACFIRE, the transmit or receive line sequence (5) MENU programs the RAPID key to access the
becomes incorrect, transmission of an authentication RAPID page. The operator is presented with the four
synchronization message is required (see MSG/FREE previously discussed functions.
4-153
TM 1-1520-248-10
j. R-1 key Press as required to return to
4-133. IDM INITIALIZATION. Start page 2/3.
Initialize the IDM as follows:
6. SUBS key Press and proceed as follows:
1. IDM switch Press as required to display NOTE
IDM Index page (Fig 4-77).
During send operations the user will be
2. START key Press. prompted to select which net to transmit on
if the subscriber ID is entered in more than
3. Paging (1/3) key Press. one NET.
4. TEST key Press. Enter a T using MFK; GO a. NET key Press as desired to activate
or NO GO will display on MFD. d e s i r e d n e t a n d e n t e r s u b s c r i b e r
identifier(s).
5. NETS key Press to access and complete
NET Data pages. Enter prompts as follows: b. R-1 key Press as required to access
subpages and enter identifiers. Press to
a. TFR/AIR NET key Press to scroll type or sequence to return to Start page.
net desired adjacent to NET number.
7. AUTH key Press and proceed as follows:
b. BLK key Press to scroll between SGL
and DBL. Leave as desired. NOTE
c. BAUD key Press to select desired baud Subscriber must already be entered in
rate. subscriber list.
d. RADIO key Press to select radio which a. SUBS key Subscriber is displayed or
will be used for transmitting and receiving. press key and enter desired subscriber
using MFK.
e. R-1 key The time required to transmit will
display. b. X M T L I N E C u r r e n t t r a n s m i t
authentication table line will be displayed.
f. PRE key Press to access Preamble Entry To change, press key and enter desired
page and press PREAMBLE SEC key. line.
Enter desired preamble length of 0.1 to 9.9
seconds using MFK. c. RCV LINE Current receive authentication
table line will be displayed. To change,
NOTE press key and enter desired line using MFK.
L-3 (OFF), on the MONITOR page, can be d. MODE key Press once to activate
pressed to disable monitor function. authentication tables. Press again to scroll
between XMT, BOTH or RCV.
g. MON key Press if required to access
Monitor Entry page and press MONITOR e. TABLE key Press to access transmit or
SEC key. Enter time of from 0.5 to 9.9 receive table index.
seconds using MFK. (1) Select desired transmit table line.
(2) Press key adjacent to line number.
h. AUTH key Press to scroll between Enter transmit authentication code from
MANUAL or NONE. SOI.
(3) R-1 key Press to sequence to Start
i. NETS Set up each of the eight pages as page.
required f o r each net to be used by
repeating steps a. through h. 8. MSGS key If desired, press to access
Message Present Entry pages. Press R-1 key
as required to return to Start page.
4-154
TM 1-1520-248-10
PULL
MAN
PULL
BKUP
BRT
C
ONT
IDM INDEX PAGE
AIR REQ
ARTY REQ
MOVEMENT
REPORTS
RAPID
RCVD MSG
START
STATUS
MSGS/FTXT
VSD HSD MMS COMM
PULL
MAN
PULL
BKUP
BRT
C
ONT
VSD HSD MMS COMM
PULL
MAN
PULL
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OPERATOR’S MANUAL FOR ARMY OH-58D HELICOPTER 2(4)
