ACR&Artex ELT to Nav Interface - Manual (Page 35)

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APR 30/12
ARTEX PRODUCTS / ACR ELECTRONICS, INC.
DESCRIPTION, OPERATION, INSTALLATION AND MAINTENANCE MANUAL
453-6500
(f) Allow the ELT to transmit for approximately 5 seconds.
(g) Deactivate the ELT and read the test message broadcast at “turn off”.
NOTE: The test message broadcast by the ELT at “turn-off” contains all the
information in an actual distress message, except there is a special digital prefix
that informs COSPAS-SARSAT satellites to ignore the message.
(2) Message examples are shown in "Figure 3. Examples of Location Protocol 406 MHz Messages".
Figure 3. Examples of Location Protocol 406 MHz Messages
(3) The left hand example in "Figure 3. Examples of Location Protocol 406 MHz Messages", is an
ELT programmed for “Standard Location Protocol ELT with Serial Number”. The right hand
example is an ELT programmed for “Standard Location Protocol ELT with 24-bit Address”.
(a) Actual messages will vary depending on the protocol and information programmed into
the ELT.
(b) If the ELT is programmed with a location (long message) protocol and disconnected
from the ELT/NAV Interface or the aircraft navigation system is not transmitting position
data, the message will indicate “Position Invalid” in lieu of position data. See "Figure 4.
406 MHz Location Message without Position Data"
Figure 4. 406 MHz Location Message without Position Data
(4) Repeat the activation and deactivation cycle if the ETS fails to read the message on the initial
try. The 406 MHz oscillator may not be warmed up.
(5) If continued attempts to read the message fail, check the ELT for self-test error codes and
refer to the applicable ELT abbreviated component maintenance manual.
Sarsat Beacon Reader
Beacon ID = 2DC843B2F2574FF
Message Type = Test, Long
Country = 366 USA
Aviation ELT S/N = 6521
Type Approval # = 112
Position = N43º 30’ 0”
W63º 45’ 0”
Position Source = External
121.5 MHz Beacon = Yes
Nov 13, 2009 11:39 am 55 sec
Clear Done Print
Sarsat Beacon Reader
Beacon ID = 2DC741E1E8574FF
Message Type = Test, Long
Country = 366 USA
A/C ICAO Addr = 50170364N16SQ
Position = N43º 30’ 0”
W63º 45’ 0”
Position Source = External
121.5 MHz Beacon = Yes
Nov 15, 2009 10:06 am 25 sec
Clear Done Print
Sarsat Beacon Reader
Beacon ID = 2DC75B534AFFBFF
Message Type = Test, Long
Country = 366 USA
A/C ICAO Addr = 50170364N16SQ
Position = Invalid
Position Source = External
121.5 MHz Beacon = Yes
Nov 15, 2009 10:06 am 25 sec
Clear Done Print