7
Gordon Smart Recorder User Guide
When using duty cycling the smart recorder will power on the hydrophone(s) approximately 3 minutes
before the duty cycle is set to start recording and will power down the hydrophone(s) 1 minute after the
recording has finished.
The start up of the hydrophones is indicated by one buzz followed by a double buzz.
The shut down of hydrophones will be indicated by three consecutive buzzes.
The minimum period suggested is 10 minutes. Any shorter periods will not give the smart recorder
enough time to enter low power mode and it will continuously stay on and not conserve battery during
inactivity.
All periods should be at least 5 minutes greater than the active periods for any conservation of battery.