Shearwater TERN - Page 34

Operating Instructions
Page 34
Doc. 15301-RevB (2023-11-24)
Freediving Alerts
Customizable in each set, these alerts are useful for
notifying the diver of different phases of a freedive�
Freediving alerts differ from normal alerts in several
ways�
• Only appear for 4 seconds�
• Come in 3 colors depending on urgency�
• Fully customizable within a set�
• Each has a customizable depth or time as a
triggering condition
Freediving alert types:
Info - Appears in blue�
Caution - Appears in yellow� Offending triggering
condition also turns yellow�
Danger - Appears in Red� Offending triggering
condition also turns red�
Depth Alerts:
Notify 1, Notify 2, Warn Depth, and Max Depth all
trigger when their respective depth thresholds have
been exceeded on decent�
Ascent Alert:
Asc� Notify indicates when a depth threshold has been
exceeded on ascent�
Regularly test your alerts with the Test Alert
tool described on page 36 to ensure they
are working and you can hear/feel them
through your exposure suit�
.0
0
ft
MAX
ft
103.6 4:57
STOPWATCH
SURFACE
Deep
19:16
FD
C
L
E
A
R
Info
Warn Time
.0
0
ft
MAX
ft
103.6 4:57
STOPWATCH
SURFACE
Deep
19:16
FD
C
L
E
A
R
Info
Notify Time
.0
0
ft
MAX
ft
103.6 4:57
STOPWATCH
SURFACE
Deep
19:16
FD
C
L
E
A
R
INFO
Notify Time
Time Alerts:
Notify Time, Warn Time, Max Time, and Surf Time all
trigger when time thresholds have been exceeded on
a dive or in the case of Surf Time, after the diver has
been at the surface for a defined amount of time�
Repeat Alerts:
Depth Repeat, Time Repeat, and Surf Repeat differ
from simple depth and time alerts in that they are
repeatedly triggered at the user-defined interval�
For example, Time Repeat will vibrate every 15 seconds
while diving� This gives the diver a non-visual indication
of the passage of time�
All of the freediving alerts are listed in the table below:
Freediving
Alert
Trigger
Condition
Alert Type
Notify 1 Depth Info
Notify 2 Depth Info
Warn Depth Depth Caution
Max Depth� Depth Danger
Asc� Notify Depth Info
Notify Time Time Info
Warn Time Time Caution
Max Time Time Danger
Surf Time 1 Time Info
Surf Time 2 Time Info
Depth Repeat Depth Info
Time Repeat Time Info
Surf Repeat Time Info