Your beacon has the ability to perform 2 different tests toensure the beacon is working perfectly. The first is a basic selftest which checks the beacons Data Integrity and Memory; 406MHz Synthesizer; RF Power/Battery; GPS header and sends asatellite burst. The second test is a GPS Self Test that actuallyturns the GPS Receiver on, downloads your position and thentransmits this data in the Self Test satellite burst.Note: Self test should only be performed in the first 5 minutes ofany hour.Basic Self Test (No GPS Data)During a Self-test your beacon will send a 406 MHz signal codedas Self-test to the satellite system and a 121.5 MHz homingsignal.This beacon has enough excess battery life to perform 60 selftests over the 5 year life of the battery.To perform a Basic Self Test:1. Unclip the antenna latch from the case.2. Move the antenna into the upright position3. Depress the Test button for 1 full secondA Green Light will flash followed by a Second Long Green Lightflash and the strobe light. This indicates a successful Basic SelfTest.If a red LED flashes at the completion of the Self-test, yourbeacon has failed. Repeat the Self-test. If the failure persists,contact ACR Electronics or an authorized Battery ReplacementCenter for servicing of your beacon.Light Scheme Light MeaningSelf Test PassedSelf Test Passed(Battery: <24 Hours)Self Test FailSelf Test Fail(Battery: <24 Hours)Battery Fail126. Testing Your BeaconACR strongly recommends performing the Self-Testonce per month, or at least two weeks prior to a tripallowing enough time for service should your beaconrequire it.Battery Witness Seal LifeIf your beacon flashes an initial Amber light at thebeginning of the Self- test, this indicates that yourelectronic witness has been broken and you have usedmore than 1 hour of battery life. While the beacon will stilloperate normally in a distress situation, ACR stronglyrecommends you have your battery replaced and theelectronic witness reset to ensure that you will have atleast 24 hours of battery power.