Specifications

Y1-03-0244A 15
A Self-test is initiated by holding the Self-test button for at least ½ second
and less than 5 seconds.
Your beacon will flash the green LED to signify the test has begun and the
Digital Display will show Pass or Fail message. The green LED will flash a
second time to indicate that the self test was successful.
Components Tested: Data Integrity and Memory; 406 MHz Synthesizer;
RF Power/Battery; GPS header
If a red LED flashes at the completion of the Self-test, your beacon has
failed. Repeat the Self-test. If the failure persists, contact ACR Electronics
or an authorized Battery Replacement Center for servicing of your beacon.
NOTE: During a Self-test your beacon will send a 406 MHz signal coded as
Self-test to the satellite system. The 121.5 MHz homing signal is inhibited
during Self-test; this allows you to test your beacon any time during the day
without causing false alerts.
Self Test Sequences
Self Test Guide ( Green LED
Red LED)
Green LED, Display 4 Passes,
Green LED
Successful Self-test
Green LED, Less than 4
Passes, Red LED
Failed Self-test – Return beacon
to ACR
Red LED, Display 4 Passes,
Green LED
Successful Self-test – At least 1
hour of battery power has been
depleted, have battery replaced.
Red LED, Less than 4 Passes,
Red LED
Failed Self-test – Return unit to
ACR for service.
4. Battery Witness Seal Life
If your beacon flashes an initial red LED at the beginning of the Self- test,
this indicates that your electronic witness has been broken and you have
used more than 1 hour of battery life. While the beacon will still operate
normally in a distress situation, ACR strongly recommends you have your
battery replaced and the electronic witness reset to ensure that you will
have 24 hours of battery power.
5. GPS Testing (GNSS Self-Test)
This test is NOT required as 100% of all GPS receivers that leave ACR
have been tested to ensure they perform correctly. However, if you would
like to ensure your GPS receiver is working, please follow these
instructions very closely.
CAUTION: For PLB-350C models, the following test can not be
performed more than sixty times during the life of the battery pack.