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dur ing the “Reset” cy cle but is coded
as a “test sig nal”. If viewed with a
test set, po si tion data is not dis -
played.
3. If your ELT front panel in dicator
light is wired through ei ther the air -
craft mas ter or the avi on ics mas ter
switch, make sure these switches
are turned on. NOTE: If uti liz ing the
nav i ga tion po sition func tion of the
ELT, en sure that both the ELT and
the air crafts nav igational sys tem are
ac tive at least 30 sec onds prior to
the ELT test.
4. Tune a re ceiver (usu ally the air -
craft ra dio) to 121.5 MHZ.
5. Turn the ELT air craft panel switch
to “ON,” wait for 3 sweeps on the re -
ceiver, which takes about 1 sec ond,
and then turn the switch back to the
“ARM” (OFF) po sition while pay ing
special at tention to the LED ac tiv ity
upon en tering the “ARM” (OFF) con di -
tion.
The mi cro pro ces sor in the ELT
checks the G-switch (au tomatic ac tiva -
tion switch) latch ing cir cuit, pins 12 &
13 on the 22-pin cir cular con nector at
the ELT; the 406.028 MHZ trans mitter
for proper RF out put; pres ence of
valid nav igation data (nav i ga tion sys -
tem must be ac tive) and a bat tery
check. If the ELT is work ing prop erly,
the se quence fol lowing en try to the
“ARMED” (OFF) con dition will re sult in
the panel LED stay ing ON for ap prox -
i mately 1 sec ond then ex tin guish ing.
If a prob lem is de tected, the LED
pro vides a coded sig nal fol lowing the
ini tial 1 sec ond pulse. The coded sig -
nal and re lated prob lem are as fol -
lows (the LED will flash in or der of
im por tance with ap prox i mately a .5 to
1 sec ond pause be tween each er ror
code if mul ti ple er rors are pres ent):
ARTEX AIRCRAFT SUPPLIES DOCUMENT #570-5060
08/05/04 PAGE 3-19
· a) 1 flash in di cates a G-switch loop
open fail ure.
· b) 3 flashes in dicates a 406.028 MHz
transmitter prob lem (i.e. bad or un con -
nected coax, an an tenna prob lem or low
power out put).
· c) 5 flashes in di cates there is no nav i -
ga tion data pres ent. This is most likely
due to im proper wir ing be tween the sys -
tem in ter face con nec tions, im proper
pro gram ming, in valid nav i ga tion data
(navigation sys tem not pow ered up).
NOTE: This er ror is not pres ent when
the ELT is pro grammed with a short
message (User Pro tocol).
· d) 7 flashes in dicates a bat tery prob lem
(i.e. bat tery us age time over an hour).
There is a se quence to the prob lem
re port ing which is the same or der as
listed above. That is, if the G-switch
cir cuit has a fail ure, there will be a
sin gle flash then 3 flashes would ap -
pear if there was a trans mitter prob -
lem and so on.
NOTE: There is an er ror con dition
where the LED on the ELT and re -
mote switch will flash rap idly with a 2
flash pulse com prised of a short and
a long flash. This oc curs im me di ately
after power is ap plied to the ELT if
ei ther of the fol low ing oc curs:
1) The ELT is not us ing the op tional
C406-N Pro gramming Adapter (P/N
453-5068) and, in ad di tion, pins 3 and
4 are not jumpered (or con nection is
interrupted) at the mat ing cir cu lar con -
nec tor. Jumpering pins 3 and 4 to -
gether in di cates to the ELT that a
Programming Adap tor is not in use.
2) If the Pro gramming Adapter is used
and there is a com munication prob lem
or wir ing er ror.
Note: This er ror will con tinue for up
to 1 min ute even af ter air craft power
is re moved due to the in ter nal ELT
power sup ply backup.
Af ter ini tial in stal la tion, ARTEX rec om -
mends a monthly “self test” of the
ELT by fol lowing the steps out lined in
this sec tion. Testing of the ELT in
excess of once a month is not rec -
om mended as the bat tery life will be
short ened by ex cessive ac ti va tions.
Ad di tional test ing is re quired if the
op tional Pro gramming Adapter is
used. Re fer to Ap pen dix D for de tails.
3.8. Sealing the Re mote
Switch Con nec tor
Once all tests have sat isfactorily been
com pleted and all har ness con nec -
tions have been ver ified to be cor rect,
the con nector at the Re mote Cock pit
Switch har ness should be sealed to
pre vent mois ture from get ting into the
wire en try holes. This can be done
by ap ply ing an elec tronic grade,
non-corrosive RTV (i.e. GE RTV 162)
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DESCRIP TION, OPERATION, INSTALLATION AND MAINTENANCE MANUAL(14)
