ARTEX PRODUCTS / ACR ELECTRONICS, INC
DESCRIPTION, OPERATION, INSTALLATION AND MAINTENANCE MANUAL
ME406 (453-6603), ME406HM (453-6604)
Page 29 of 72
Mar 19/15
25-62-30
SUBTASK 25-62-30-750-001
F.
G-Switch Functional Check – Item 4
CAUTION: A JUMPER IS REQUIRED TO PERFORM THIS CHECK. DUE TO THE POTENTIAL OF
PHYSICAL DAMAGE IF THE JUMPER IS IMPROPERLY INSTALLED, THIS STEP SHOULD
ONLY BE PERFORMED BY AN EXPERIENCED TECHNICIAN/MECHANIC.
1)
Reinstall the battery in accordance with SUBTASK 25-62-30-450-001 on page 61.
NOTE: If tests 5a through 5h are going to be performed, the battery may be temporarily installed
with only two screws, located on a diagonal from each other.
2)
Perform this functional check within the first 5 minutes after the hour (UTC), as required by AC 43.13-1,
Chapter 12, § 12-22, Note 3.
3)
Notify any nearby control tower of your intentions.
4)
Install the 500-0079 ME406 G-Switch Loop Test Connector Fixture on the ELT receptacle or jumper ELT
receptacle pins 5 and 12.
NOTE: The ELT cannot be activated using this procedure unless pins 5 and 12 on the ELT
receptacle are jumpered. See Figure 19 Metal Airframe Wiring Diagrams on page 53.
5)
Verify the ELT switch is in the “ARM” position.
6)
Monitor 121.5 MHz on an AM receiver.
7)
Activate the ELT by using a rapid forward (i.e., throwing) motion in the direction of the arrow on the ELT
label, followed by a rapid reversing action.
8)
Verify activation by listening for the aural sweep tone on the receiver.
9)
Reset the ELT by toggling the control switch to the “ON” position and then back to the “ARM” position.
SUBTASK 25-62-30-750-002
G.
Performance Testing Setup
NOTE: The ELT software routine logs battery life in 30-second increments. A minimum of 30
seconds is added to the battery usage total each time the ELT is activated and
de-activated. If the ELT is left activated beyond the first 30 seconds, additional time is
added in 30-second increments.
NOTE: Careful planning of the performance tests is necessary to avoid activating the ELT more
than necessary. Plan the performance testing in a manner that allows tests to be run
concurrently and test equipment settings to be quickly switched from one test to another.
By doing so, the three-minute warm-up requirement can be eliminated from a number of
tests and battery run time minimized to a large extent.
1)
Place the ELT in a container or screen room capable of substantially attenuating RF signals, or the
transmitter power output shall be connected to a suitable dummy load to minimize radiation.
2)
Use the ELT’s own battery pack as the power source for these measurements. An alternate power
source can be used where lengthy servicing, other than the performance tests, is anticipated.
3)
Ensure that adequate attenuation rated for 406 MHz is installed between the ELT antenna output and
the measurement equipment to prevent damaging input circuitry, if required. At a minimum, the
attenuator should be rated at 30 dB and 5 watts for a ½-second duration as shown in Figure 8
Performance Testing Equipment Setup.
