IQ1204 Dive Computer Start Guide
IQ 1204 Dive Computer Start Guide
First Edition
Thank you very much for your purchase of the TUSA Dive Computer IQ 1204.
The TUSA IQ 1204 is equipped with a very unique solar charging system packed into a compact watch-style
diving computer. In addition, the TUSA IQ 1204 offers the world’s first M value warning function exclusive to
TUSA. This feature manages the risk of no-decompression dive times in water depths up to 20 m that tend to
be ambiguous by taking a safety margin of nitrogen gas pressure in the body. The TUSA IQ 1204 also
supports EAN (Enriched Air Nitrox) diving allowing for settings of 21% – 100% EAN (4mix gas available) as
well as Free-diving and Gauge Mode. The TUSA IQ 1204 watch features include: world time ( 48 city), alarm,
stopwatch, and timer.
An exciting new function, using Bluetooth SMART and the downloadable smartphone app, you can transfer
the information measured by your dive computer to your smartphone. In addition to being able to record basic
log information such as the dive start time, dive time, water depth, and temperature, you can also record
diving point location information (on a map), instructor/buddy signature, photos, and more.
Note: Before using your new TUSA IQ 1204 diving computer, visit the TUSA website for your user’s manual.
It is extremely important to read and fully understand how to operate the computer as well as the dangers,
warnings, and precautions. Incorrect usage of the computer may lead to serious injury.
Please contact your local distributor if further assistance is needed.
Important information
Please be sure to download and read the PDF IQ 1204 manual from the TUSA website before use.
Incorrect usage may lead to serious injury.
TUSA top page: http: //www.tusa.com/
Solar Charging System
The TUSA IQ 1204 solar panel is integrated into the display of the computer.
・ Long life solar charged battery eliminates the need for unwanted battery changes.
・ For charging, expose the computer display window to sunlight for a half day once a month to ensure
its proper function.
When light is striking or not striking the unit
<When light is striking the unit>
Light
<When the light is not striking the unit>
Discharge
Solar cell
(charged with light)
Electrical energy
Charging
Secondary
battery
Supply
Secondary
battery
Supply
The TUSA IQ 1204 provides various information. always displaying time, even when it is not exposed to light. On
land, the computer calculates atmospheric pressure every 20 sec. and in Dive Mode, the computer calculates
water pressure every second.
If it is not exposed to light, capacity of secondary battery will be decreased which will disable the functions of the
computer.
* The Bluetooth® trademark and logo are registered trademarks of Bluetooth SIG, Inc. and are used by Tabata Co.,Ltd. under
license.
IQ 1204 Basic Operating Guide
Display part numbers
①Top left
L Press and hold
M
MODE
②
③
④ ⑤
P
PLAN
t
* Free diving mode cannot be switched to automatically. Please use the t+M button before use.
★ In most modes, press and hold the M button to return to the basic watch mode. (See box below)
LIGHT button
Sampling time setting
(time setting)
① −
ON/OFF
L
Basic watch mode
①month - day
L
②weekday
③Time
④World time / O 2 %
P
⑤Time (seconds)
Log mode
L
M Press
and hold
t
②Title
③ ON/OFF
P
②weekday
New
⑤ −
DIVE history FREE history
DIVE PROF FREE LOG
①Total dive number
①Elapsed time
①Total dive times
M
Return
②FREE
②DHIST
②FHIST
②Depth graph
②Log No.
③Log No
③Session No
③Total dive time
③Total dive time
③Depth
③Diving time
④Entry time
④Start time
④Maximum depth
④Maximum depth
④Warning/O 2 %
④Maximum depth
⑤Exit time
⑤End time
⑤Longest dive time
⑤Longest dive time
P
M
L
①Start time
②DIVE/GAUGE
P
temperature at
⑤ Water temperature ⑤ Water
maximum depth
Old
Forward
ー
M Press and hold
M Press
and hold
A
A
L- 1
Basic watch mode
L- 2
DIVE L- 1
FREE DEEP
①Average water depth
①Average water depth
④World time / O 2 %
⑤Time (seconds)
DIVE L- 2
A
②DIVE/Warning/GAUGE ②DEEP
A
P
①DESAT. time
④ −
M
⑥N 2 , O 2
③Time
P
ON/OFF
Dive profile/ FREE individual log
L
Total dive number
①month - day
Longer
( 10 , 20 , 30 , 60 )
History
Over 48 hours after diving
Surface mode
(indication of 48 hours after diving)
Shorter
A
DIVE/GAUGE FREE session
①Year Month-Day
(switch ON/OFF)
① −
③Sampling seconds
⑤ −
A Press
and hold
O 2 profile save settings
M
②Title
④ −
right
M
P
⑤Bottom
left
A
LOG
Each t + M , switch to
• DIVE/GAUGE mode
• FREE mode
• Basic watch mode
BLE Log data
communication
M
③Main
L
Bluetooth Log data transfer mode
②Top right
①
④Bottom
ADJUST
A
②Weekday Day(TU 30 )
③Time
①Total dive time
②O 2 % /GAUGE
②LONG
③Dive time
③ー
③Dive time
④Maximum depth
④Maximum water depth
④CNS
④Maximum depth
⑤The lowest water
⑤Water temperature
Gauge mode settings
②Title
at maximum depth
N2 , O2
P
③OFF/ON
ー
ON/OFF
④ −
M Press and hold
⑤Time (seconds)
(OFF/ON switch)
①SET
⑤Water temperature
⑤OTU
at maximum depth
N 2 , O 2 Maximum state
④Surface time / O 2 %
①SF
③Dive time
temperature.
M Press and hold
FREE LONG
⑤ −
OTU Information display
(UPTD Lung oxygen toxicity)
M
Plan mode
① −
①Safety factor
A
②Title
③ −
④Ratio:Day
A
L
Gas 1 O 2 % settings
Shallower
②NDL
① −
③Planned water depth
②gas No.
P
⑤Gas 1 O 2 %
A
M Press and hold
*
L P
Deeper
① −
① −
②Title
②Title
③ −
③ON
④Ratio:Week
④ −
⑤OTU
⑤ −
(O 2 % switching)
L
Gas 2 ∼ 4 O 2 % settings
① −
Decrease
③ −
④ −
④ −
P
Increase
⑤O 2 %/OFF
A
A
Maximum water depth alarm setting
① −
②Title
(Water depth
switching)
L
① −
Shallower
④ −
②Safety factor
Stopwatch
Timer
Alarm
① −
②Title
M
M
M
M
M
Basic watch
mode
Decrease
P
Increase
(Safety factor switching)
L
Decrease
P
④ −
Deeper
⑤ −
P
Increase
A
Depth interval alarm settings
World Time
L
③ −
A
Each mode
(O 2 % switching)
(In the case of Gas setting OFF. If not OFF, switches to 3, 4 gas)
Safety factor setting
③Water depth/OFF
⑤ −
Compass
②gas No.
A
③ −
⑤O 2 %
Press and hold to fast foward, 3m interval (9 ~ 48m) switchable
When gauge mode is ON
Week accumulated amount
A
A Press and hold
A Press and hold
④ −
⑤OTU
M
Press
and
hold
Basic watch mode
(Planned water
depth switching)
When gauge mode is OFF
Accumulated amount on the day
M
Press
and
hold
M Press and hold
(switch water depth)
L
M value warning settings
① −
Shorter
②Title
③Water depth/OFF
④ −
⑤ −
(M value switching)
L
Stricter
③ −
A
P
Longer
④ −
⑤M value
P
less strict
* In each mode L ⇔ P operation (example: decrease-increase) description is relative to the default state.
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