Ameri-King АК-451-Series - Manual (Page 14)

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by a rapid reversing action. Verify that the ELT has been activated by use of the
Wattmeter, the Airplane’s VHF Radio Communications Receiver when tuned to
121.5 MHz, or other means (see Note 1). The ELT must then be reset by pressing
either the RESET push button located on the ELT main unit or the ELT Remote
Unit.
Note 1:
This is not a measured check. It only indicates that the G-Switch is working.
3.1.7.2
Antenna Check: A low quality AM Broadcast Radio Receiver should be
used to determine if energy is being transmitted from the Antenna. When the
Antenna of this Radio (tuning dial on any setting) is held about 6 inches from the
activated ELT Antenna, the ELT Aural tone will be heard (see notes 2 and 3). The
ELT must be reset by pressing either the RESET push button located on the ELT
Main unit or the ELT Remote Unit.
Note 2:
This is not a measured check, but it does provide confidence that the Antenna is
radiating with sufficient power to aid search and rescue. The Aircraft’s VHF
Receiver, tuned to 121.5 MHz, may also be used. This Receiver however is more
sensitive and could pick up a weak signal even if the radiating ELT’s Antenna is
disconnected. Thus, it does not check the integrity of the ELT System or provide the
same level of confidence as does an AM Radio.
Note 3:
Because the ELT radiates on the emergency frequency, the Federal Communications
Commission allows these tests to be conducted only within the first 5 minutes after
any hour and limits the tests to 3 sweeps of the Transmitter Audio Modulation.
IMPORTANT NOTE:
IN NORMAL CONFIGURATION, THE MAIN SWITCH, LOCATED ON THE
ELT MAIN UNIT, MUST BE SELECTED AT “ARM” POSITION AT ALL TIMES.
3.1.8
Verification of Digital Message
Note:
This test is not mandatory per FAR 91.207(d) however Ameri-King strongly
recommends that it be performed as part of periodic maintenance, at least every
year.
Verify the 406 MHz digital message using a Computer Test Set capable of receiving
and decoding the message. Ameri-King suggests the Ameri-King ELT Computer Test
Set P/N TS-451. Contact your local Ameri-King dealer for availability of the
Computer Test Set or call Ameri-King. Follow instructions provided with the
computer test set.
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The AMERI-KING AK-451 has a self-test feature, which is encoded such that it will
be ignored by the SAR satellite system. This 15-digit number is used to register the
ELT with the appropriate 406 MHz ELT registration authority. In the US, the
National Oceanic and Atmospheric Administration (NOAA) maintain the database of
registered ELT's.
Note:
For the following example, the programming protocol is assumed to be Standard
Location Protocol, ELT with C/S type approval number and Serial Number (Long
Message.) Other protocols are possible and the exact read-outs of the Computer Test
Set will vary. Refer to the applicable operation manual included with the Computer
Test Set or contact AMERI-KING for assistance.
To verify the digital message, perform the following steps:
Setup
Use provided cable to connect the ELT (RJ-12 port) to the PC (USB port)
3.1.8.1 ELT
ID Reading
Step1: Double-Click AK451 Icon to run the program. The programming window
appears as below:
Note: If you don’t see the window above, you may try the other USB port.
Step 2: Set the ELT main switch to “ARM” position.
Step 3: Verify the LED ‘ON’ light illuminates for 4 seconds.
Step 4: At the “:>_” prompt, type: “Password” command then press “Enter” to go to
main menu. Must type this command within next 20 seconds after the
command prompt appears.