Suunto Cobra [37/78] Audible and visual alarms

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 35 bar [500 psi].

• 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.).

Continuous beeps and the backlight activated for 5 seconds occur, 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.).