Tusa IQ 1204 Start Manual Download Page 2

Basic watch mode

A

M

month - day

weekday

Time

World time / O

2

 

Time (seconds)

L

P

t

Over 48 hours after diving

Surface mode

 (indication of 48 hours after diving)

month - day

weekday

Time

World time / O

2

 

Time (seconds)

A

 

DESAT. time

Weekday  Day(TU 30 )

Time

Surface time / O

2

 

Time (seconds)

IQ 1204 Basic Operating Guide 

A

 ADJUST 

M

 MODE 

L

 LOG 

P

 PLAN 

t

 LIGHT button

Bluetooth Log data transfer mode

BLE Log data 

communication

 

P

 ON/OFF

Log mode

History

M

M

Dive profile/ FREE individual log

DIVE/GAUGE

FREE session

L

 

New

P

 

Old

DIVE history FREE history

DIVE PROF

FREE LOG

L

 

Return

P

 

Forward

Year 

 Month-Day

Total dive number

Total dive times

Elapsed time

Start time

DIVE/GAUGE

FREE

DHIST

FHIST

Depth graph

Log No.

Log No

Session No

Total dive time

Total dive time

Depth

Diving time

Entry time

Start time

Maximum depth

Maximum depth

Warning/O

Maximum depth

Exit time

End time

Total dive number

Longest dive time

Longest dive time

 Water temperature

  

Water temperature at 
maximum depth

N

2

, O

2

  ー

Each 

t

 + 

M

, switch to

• DIVE/GAUGE mode
• FREE mode
•  Basic watch mode

L- 1

A

L- 2

DIVE L- 1

FREE DEEP

DIVE L- 2

FREE LONG

Average water depth

Average water depth

SF

Total dive time

DIVE/Warning/GAUGE

DEEP

O

2

 

/GAUGE

LONG

Dive time

Dive time

 

Dive time

Maximum depth

Maximum water depth

CNS

Maximum depth

The lowest water 

temperature. 

Water temperature 

at maximum depth

OTU

 Water temperature 

at maximum depth

N

2

, O

2

 Maximum state 

N

2

, O

2

  ー

Plan mode

When gauge mode is OFF

(Planned water 

depth switching) 

Safety factor

L

 Shallower

P

 Deeper

NDL

Planned water depth

④ −

Gas 1 O

2

 

 * 

L

 

P

 Press and hold to fast foward, 3 m interval ( 9 ~ 48 m) switchable 

When gauge mode is ON

① −

Title

ON

④ −

⑤ −

Sampling time setting

(time setting)

M

M

O

2

 profi le save settings

(switch ON/OFF)

① −

L

 Shorter 

P

 Longer

( 10 , 20 , 30 , 60 )

① −

  

P

 

ON/OFF

Title

Title

Sampling seconds

③ 

ON/OFF

④ −

④ −

⑤ −

⑤ −

Gauge mode settings

(OFF/ON switch)

SET

  

P

 

ON/OFF

Title

OFF/ON

④ −

⑤ −

Each mode

Compass

Stopwatch

Timer

Alarm

World Time

Basic watch 

mode

M

M

M

M

M

Gas 1 O

2

 % settings

(O

2

 % switching)

Gas 2 

4 O

2

 % settings

(O

2

 % switching)

① −

L

 Decrease

P

 Increase

A

① −

L

 Decrease

P

 Increase

gas No. 

gas No.

③ −

③ −

④ −

④ −

O

2

 %

O

2

 %/OFF

A

(In the case of Gas setting OFF. If not OFF, switches to 3 , 4 gas)

Maximum water depth alarm setting

(Water depth 

switching) 

Safety factor setting

(Safety factor switching)

① −

L

 Shallower

P

 Deeper

① −

L

 Decrease

P

 Increase

Title

Safety factor

Water depth

/OFF

③ −

④ −

④ −

⑤ −

⑤ −

A

A

Depth interval alarm settings

(switch water depth)

M value warning settings

(M value switching)

① −

L

 Shorter

P

 Longer

A

① −

L

 Stricter

P

 less strict

Title

Title

Water depth

/OFF

③ −

④ −

④ −

⑤ −

M value

OTU Information display 

(UPTD Lung oxygen toxicity)

Accumulated amount on the day

① −

Title

③ −

Ratio:Day

OTU

A

 

Week accumulated amount

① −

Title

③ −

Ratio:Week

OTU

Display part numbers

Top left

Top right

Main

 Bottom 
left

 Bottom 
right

Basic watch mode

Basic watch mode

* 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)

* In each mode L 

 P operation (example: decrease-increase) description is relative to the default state. 

M

M

 

Press 

and 

hold

M

 

Press 

and 

hold

L

 

Press and hold

A

 

Press 

and hold

M

 

Press 

and hold

M

 

Press 

and hold

M

 

Press and hold

M

 

Press and hold

M

 

Press and hold

M

 

Press and hold

M

 

Press and hold

A

 

Press and hold

A

 

Press and hold

A

A

P

L

M

A

A

A

A

A

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