
ARTEX AIRCRAFT SUPPLIES
Document # 570-2225
program long message ELT’s and 2400 to program short message ELT’s. See the grid in
section 6.2.1 for details. If the settings are incorrect, the ELT will not respond to
programming commands (an error message will say so). The baud rate may be changed
by clicking on the indication in the main programming window or under the CommPort
menu.
6.1.3
Plug the Level Shifter cable into the ELT. Turn Level Shifter on. Read notes below.
Important Note
: A short message ELT (like the 110-406 series) with battery will activate
when the Level Shifter is turned on. Under many circumstances, it will not deactivate when
the Level Shifter is turned off. In this case, the ELT must be manually reset by moving the
switch to ON and back to OFF/ARM.
Important Note
: When power is applied, a short message ELT will enter the transmit mode
and a weak 121.5/243MHz transmission may be heard. The 406MHz transmitter will be
active when the short message ELT’s battery is connected. If a battery is connected, do not
disconnect it. The remote case of a bad battery EEPROM that interferes with programming
may appear only if the battery is connected. This necessitates either programming the short
message ELT in a metallic enclosure to contain RF emissions, or completing the
programming and turning the level shifter off before the first 406MHz transmission in about
12-13 seconds. The level shifter should always be turned off promptly after programming to
minimize battery usage as well as possible 406MHz transmissions.
Note
: If the following programming operations are done on a short message ELT during a
406MHz transmission burst, there is a very small chance that the burst will cause the
operation to fail. If this occurs, the user should simply try again, avoiding the transmission
periods (about 12-13 seconds after activation and then every 47.5-52.5 seconds).
6.2 ELT Programming
Refer to the chart (Table 1) on the following page as instructed to complete the
programming sequence below.
NOTE: For the following table, the protocols defined are as follows:
Std Location = Aircraft 24 Bit Address (Long) and ELT Serial (Long)
Aviation User = Tail Number (Short)
Serial User = Aircraft 24 Bit Addr (Short), Aircraft 24 Bit / National (Short), ELT /
COSPAS (Short), ELT / National USA (Short) and Aircraft Operator (Short)
National Location = ELT Serial (Long)
User Location = Aviation User / Tail Number / Location (Long)
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NOTE: Only Aviation User, certain Serial User and certain Standard Location protocols are
supported by default, additional protocols only available with specific Artex permission and
direction.