3.4 At Surface
3.4.1 Surface Interval
An ascent to any depth shallower than 1.8 m [6 ft]
will cause the DIVING display to be replaced by the
two SURFACE displays, giving the following infor-
mation:
Display I (Fig. 3.17)
• The surface time in hours and minutes (separated
by a colon), telling the duration of the present sur-
face interval. It is shown above SURF TIME in the
center window of the display (Fig. 3.17, b).
• The dive time in minutes, i.e. the total duration of
the most recent dive, is displayed next to DIVE
TIME in the lower right corner (Fig. 3.17, f).
• The maximum depth of your most recent dive in
meters [ft] is shown in the same position as your
depth readings during the dive. MAX indicator is
then shown in front of the value (Fig. 3.17, a). The
SLOW warning will blink over the maximum
depth, if you have surfaced with the SLOW warn-
ing on (Fig. 3.17, d).
• The temperature in ˚C [˚F] is shown in the lower
left corner (Fig. 3.17, c).
• The no-flying warning is indicated by a blinking
airplane (Fig. 3.17, e).
Display II (Fig. 3.18)
• The present depth in meters [ft] (Fig. 3.18, a).
• The desaturation/ no-flying time in hours an
23
Figure 3.16
Displays After Violated
Decompression Dive
The blinking
CEILINGS/ASC TIME
symbol [a] indicates that
you have violated the ceil-
ing for more than three
minutes or the maximum
ceiling depth of 12m (39ft)
was exceeded. The IQ-400
will stay as a depth gauge
and timer for 39 hours 59
minutes = no fly time [b].
After 2 hours 30 minutes
surface interval time the
no fly time is 37 hours 29
minutes. In the dive plan-
ning mode the Er warning
is displayed instead of the
no-decompression time
[c]. You must not dive
again or fly for at least
two days.
NO
A 1
A
m
S
C
S
P
E
E
D
HIS
LOG
ALT
SET
PLAN
SURF
MAX
DIVE TIME
DIVE
NO
CEILING
ASC
A 1
A
m
S
C
S
P
E
E
D
HIS
LOG
ALT
SET
PLAN
NO DECO
DIVE TIME
DIVE
A 1
A
m
S
C
S
P
E
E
D
HIS
LOG
ALT
SET
PLAN
b
c
a
¡C
WARNING
NEVER LET THE CEILING DEPTH
DESCEND DEEPER THAN 9 m (30 ft).
When the ceiling is deeper than 9 m [30 ft], a
blinking error warning Er will appear and when
the 12 m [39 ft] ceiling is reached the
IQ-400
will go into a permanent error mode.
!
!
Содержание IMPREX II IQ-400
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