Three (3) double beeps are also heard when the cylinder pressure goes down to the user-selected alarm pressure, and when the remaining time reaches zero.

6.1.4. Ascent rate indicator

The ascent rate is displayed graphically along the right hand side with a vertical bar. When the maximum allowed ascent rate is exceeded, the lower segment of the bar starts to blink with the top segment staying solid, indicating that the maximum ascent rate has been exceeded.

NORMAL ASCENT RATE.

ACTIVATED BACKLIGHT, ALARM

AND A BLINKING ASCENT RATE BAR GRAPH INDICATE YOU ARE ASCENDING FASTER THAN 10 M/MIN.YOU ARE ADVISED TO MAKE A MANDATORY SAFETY STOP

WHEN YOU REACH A DEPTH OF 6 M.

WARNING DO NOT EXCEED THE MAXIMUM ASCENT RATE! Rapid as- cents increase the risk of injury. You should always make the Mandatory and Recommended Safety Stops after you have ex- ceeded the maximum recommended ascent rate. If this Mandatory Safety Stop is not completed, the decompression model will penalize your next dive(s). Continuous ascent rate violations will result in Mandatory Safety Stops. When Recommended Deep Stop is enabled, the length is indicated in seconds.

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Suunto D6I manual Ascent rate indicator, Normal Ascent Rate Activated BACKLIGHT, Alarm