Specifications

D.3. In stal la tion and Check-
out Pro cess
All in stal la tion pro cesses and in ter con nec -
tions to nav i ga tion sys tems should ad here
to the guide lines set forth in the FAA Ad -
vi sory Cir cu lars AC43.13-1A, 43.13-2A,
20-130A and 20-138, or later re vi sions o f
these doc u ments. It is very im por tant that
the the Global Po si tioning Sys tem/Flight
Man age ment Com puter (GPS/FMC) man u-
fac turer’s in stal la tion in struc tions be con
-
sulted re gard ing in stal la tion de tails that
may be spe cific to the GPS/FMC. Re fer
to the in stal la tion in struc tions spe cific to
the GPS/FMC that you are con nect ing the
ARTEX ELT/NAV In ter face unit to for spe
-
cific in struc tions.
NOTE: In or der to ver ify ei ther the 24
bit ad dress (man da tory) or nav i ga tion po
-
si tion pro vided by the ELT/NAV In ter face
that is be ing trans mit ted by the ELT, the
ELT will only need to be ac tive long
enough to per form the “self test” and
should not be ac tive for more than 5 sec
-
onds. The 406 MHz out put should be
con nected to the hand held test set
(Artex P/N 453-0131) via a coax ca ble
and a 30 dB at tenu ator. For any 406
MHz trans mis sion af ter the ELT is ac tive
47.5 sec onds or more, the sat el lite sys -
tem con sid ers the trans mis sion to be a
valid dis tress sig nal. The ELT trans mits a
test sig nal at turn off which con tains the
same in for ma tion as the dis tress mes sage
ex cept that the sig nal con tains a pre fix
code that iden ti fies it as a “test mes sage”
that will be ig nored by the sat el lite sys -
tem should it be de tected.
For all test ing of the 406 MHz out put,
only the “test mes sage” that is trans mit ted
at turn off is re quired to ver ify the ELT
and ELT/NAV In ter face func tion.
Fol low the in stal la tion in struc tions pro-
vided in the ARTEX ELT/NAV In ter face
In stal la tion and Op er a tion Man ual (570-
4602) for de tails re gard ing the in stal la tion
of the ELT/NAV In ter face unit (453-6500).
It is ex tremely im por tant that the
ELT/NAV In ter face in stal la tion not be in
con flict with the GPS/FMC man u fac turer’s
in stal la tion in struc tions in or der to avoid
an in stal la tion that may de grade the
GPS/FMC per for mance. As a re sult, the
Post In stal la tion check out in the GPS/
FMC In stal la tion Man ual must be fol lowed
af ter in stall ing the ELT/NAV In ter face box.
NOTE: The up dated hex ID must be
ver i fied for ELT’s which are pro grammed
for the 24 Bit Pro to col and are in stalled
with an ELT/NAV In ter face which is
strapped for the air craft ad dress. The ELT
out put must be ver i fied for the cor rect air
-
craft ad dress and the ELT must be la -
beled with the new 15 digit hex code ID.
Re fer to the ELT/NAV In ter face Man ual
570-4602 Sec tion 3.7.2. For this test, the
por ta ble SARSAT Bea con Test Set
(Artex P/N 453-0131) must be used. The
406 MHz ELT out put (TPS con nec tor in
re cessed area on front of ELT) must be
con nected di rectly to the hand held tester
via a coax ca ble and a 30 dB at tenu ator.
If us ing the ex ist ing an tenna coax ca ble
(TPS to TNC), a TNC to BNC adapter
must be used to con nect to the SARSAT
Bea con Tester.
The por ta ble SARSAT Bea con Test Set
(ARTEX P/N 453-0131) must be used to
per form the tests de scribed in Sec tion 4,
para graph 4.3.13 of this man ual
(570-0421). The hex code dis played on
the tester should match the hex code
which is on the ELT’s prod uct la bel. If re-
ceived, the lat i tude and lon gi tude dis -
played on the tester should match the
lat i tude and lon gi tude dis played on the
GPS/FMC sys tem. Ver i fi ca tion of the lat i
-
tude and lon gi tude is de sir able but is not
re quired.
ARTEX AIRCRAFT SUPPLIES DOCUMENT #570-5000
04/11/01 PAGE D-4