At the surface mode, the CEILING/ASC TIME symbol will blink in the center
window and at the dive planning mode a permanent Er is shown instead of
no-decompression times .
Extreme Ceiling Depth Or Decompression Range
When the ceiling descends to the depth of 10 m [30 ft] or when the ASCent
TIME is longer than 63 minutes, the Er warning will start to blink in the center
window. If the diver immediately ascends, the
IQ-400
will continue to func-
tion normally after the ceiling is back to below 10 m [30 ft] or the ASCent
TIME is shorter than 63 minutes.
If the ceiling descends to the depth of 12 m [39 ft] even momentarily the
IQ-
400
will enter the permanent ERROR MODE.
4. M
ENU
B
ASED
M
ODES
The menu based functions include the
logbook and history memories, the per-
sonal/ altitude adjustment setting, and
the date and time setting. The menu
based functions are activated using the
water contacts. Keep your fingers on the
MODE and MODE/PLAN contacts
while the
IQ-400
scrolls through the
menu (Fig. 4.1).
The desired mode is selected by break-
ing the finger contact when the desired
mode appears on the display:
• LOG:
Logbook Memory. The Logbook gives a summary of the nine most
recent dives.
• HIS:
Dive History Memory. The Dive History is a summary of all dives
recorded by the
IQ-400
.
• Alt:
Personal/ Altitude Adjustment setting
• Set:
Date and Time Setting
When scrolling through the menu, a bar segment on the bottom of the display
will indicate the scrolling sequence. Make sure that the contacts and the instru-
ment itself are dry and clean before trying to use the menu based modes.
28
Figure 4.1 Menu
The IQ-400 will scroll
through the above displays.
A
m
S
C
S
P
E
E
D
HIS
LOG
ALT
SET
PLAN
A
m
S
C
S
P
E
E
D
HIS
LOG
ALT
SET
PLAN
A
m
S
C
S
P
E
E
D
HIS
LOG
ALT
SET
PLAN
A
m
S
C
S
P
E
E
D
HIS
LOG
ALT
SET
PLAN
