Suunto VYTEC DS manual Audible and Visual Alarms, Three double beeps occur, when

•If a diver had less than 2 hours total accumulated dive time in the last 48 hours, then a 12 hour surface interval before flying is recommended.

•Following any dive that required a decompression stop, flying should be delayed for at least 24 hours, and if possible, for 48 hours.

•Suunto recommends that flying is avoided until all the DAN and UHMS guidelines and the dive computer wait to fly conditions are satisfied.

3.7.AUDIBLE AND VISUAL ALARMS

The dive computer features audible and visual alarms to advise when important limits are approached or to acknowledge preset alarms.

A short single beep occurs, when:

•the dive computer is activated.

•when the dive computer automatically returns to the TIME mode.

Three double beeps occur, when:

•the cylinder pressure reaches 50 bar [725 psi]. The cylinder pressure display will start to blink (Fig. 3.12.).

•the cylinder pressure reaches the selected alarm pressure.

•the calculated remaining air time reaches zero.

Three single beeps with a two second interval and the backlight activated for 5 seconds occur, when:

•the no-decompression dive turns into a decompression stop dive. An arrow pointing upwards and the blinking ascent warning ASC TIME will appear (Fig. 3.16.).

•Gas change is prompted

Continuous beeps and the backlight activated for 5 seconds oc- cur, when:

•the maximum allowed ascent rate, 10 m/min [33 ft/min], is exceeded. SLOW and STOP warnings will appear (Fig. 3.13.).

•the Mandatory Safety Stop ceiling is exceeded. A downward pointing arrow will appear (Fig. 3.15.).

•the decompression ceiling depth is exceeded. An error warning Er and a downward pointing arrow appear. You should immediately descend to, or below, the ceiling. The instrument will otherwise enter a permanent Error Mode within three minutes, indicated by a permanent Er (Fig. 3.19.).

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