SkyHunter406 SKYHUNTER 406 HF - Manual (Page 42)

MANL:INS:SH:X:XX August 8 ,2013
Rev 25
7-4
7.3.1.3 GNSS Self Test
Using the following switch sequence the ELT operator can send out a test 406 Mhz burst to
ensure the GPS receiver and antennas are operating correctly.
CAUTION: The GNSS Self Test uses battery power and as a result if you choose to perform
more than the recommended annual testing early battery replacement may be required.
CAUTION: This test should only be performed annually to conserve battery power. This can
only be done in the first 5 minutes of any UTC hour and can be performed a total number of
10 times over the lifetime of the battery pack.
Place the ELT locking Master Switch in the “ARM” position and wait 5 seconds to begin
test or with the ELT already in the “ARM” position, press
[”ON” , ”ARM”],[”ON” , ”ARM”],[”ON” , ”ARM”],[”ON” , ”ARM”],[”ON” , ”ARM”]
(within 5 seconds) at the Remote Switch.
GNSS Self Test will start (can last up to 5 minutes depending on satellite lock time) which
will be indicated by the following beacon function.
Wait up to 5 minutes for the Test Burst (LED will flash four times every 30 seconds
during this wait period)
When a valid GPS position has been obtained the beacon will start into the ‘burst prep
mode’, this will give the operator 30 seconds to be ready with any measurement
equipment that may be needed to capture the test burst that will be encoded with
position data.
2 Red Flashes* 2 Green Flashes Burst Prep Mode
LED Sequences Displayed
At the REMOTE At the ELT Description
15 seconds Solid Red* 15 seconds Solid Green PASS
15 Red Flashes* 15 Amber Flashes FAIL
3 Red Flashes* 3 Amber Flashes Maximum # of GNSS/Power Burst
Tests Reached per battery pack to
conserve battery power
*For every Red Flash the buzzer will sound.
Note : If the operator has performed the toggle sequence too quickly it will be ignored and the beacon will
automatically perform an “ARM” test and power back down to await another activation. When
performing the test toggle sequence it is advised to observe a 0.25-0.5 second remote switch “ON” time.
Please note that the remote switch is a momentary type switch and therefore the operator does not need
to actively move the switch to the “ARM” position but rather allow the switch to spring back into the
default position.