
Y1-03-0362 Rev. A
Company Confidential
17
Testing Your Beacon
Your beacon has the ability to perform 2 different tests to ensure that the beacon is working
perfectly. The first is a basic self-test which checks the beacon
’
s design performance and sends
a self-test message transmitted with default location data. The second is a GPS/GNSS self-test
that turns the GPS receiver on, acquires your position and then transmits this data in a 406 MHz
self-test satellite burst (GPS and GNSS are used interchangeably to describe the GPS/GNSS
Test).
NOTE: Self-test should only be performed in the first 5 minutes of any hour.
Basic Self-Test (No GPS Data)
During a self-test, your beacon will send a 406 MHz signal coded as a self-test to the satellite
system and will also momentarily activate the 121.5 MHz homing signal.
The beacon has enough excess battery life to perform 60 self-tests over the 5 year life of the
battery.
To perform a basic self-test:
1.
Unclip the antenna latch from the case and rotate antenna 90 degrees into the upright
position. (ON/OFF button will be exposed on face of beacon once antenna is in upright
position)
2.
Depress the Test button between 2 to 5 seconds.
3.
A quick flash of the
blue
LED is an indicator that Self-Test was initiated. This will always
be the first LED flash in the self-test sequence.
The self-test light sequence is as follows: A
blue
LED will flash to show the start of the Self-
Test.
For a successfully “passed” self
-test, the
blue
LED flash will be followed by 3
green
LED
flashes and a strobe flash. The PLB-435 will show this light sequence and will also flash a
message on the screen saying
“Self
-
Test Pass”
at the end of the self-test.
Any
red
LED flash observed in the above sequence indicates that the beacon has failed self-test.
Repeat the self-test. If the failure persists, contact ACR Electronics, Inc. or an authorized
Battery Replacement Center (BRC) for servicing of your beacon. The PLB-435 will flash a
message saying “Self
-
Test Fail” at the end of a failed self
-test.
ACR strongly recommends performing the
self-test once per month
, or at least two weeks
prior to a trip, allowing enough time for service should your beacon require it. Do not exceed
the self-test limit to ensure confidence in the operation of the PLB for at least 24 hours.
Low Battery Indicator during Self-Test
If the total ON time of the beacon exceeds 2 hours, the beacon will
flash the
red
LED twice at the completion of the self-test. In addition to the LED indicators, the
display on the PLB-
435 will indicate a “Self
-
Test Fail” and will show a low battery
warning. While the beacon may still operate normally in a distress situation, ACR
strongly recommends you have your battery replaced to ensure that you will have
at least 24 hours of battery power in an emergency.