Tusa iq-650 element computer manual 12-2917-r02

6

LCD DISPLAY

Components:

a. Icon - DS (Deep Stop)

Icon - Descend Arrow

Icon - Stop Bar

Icon - Ascend Arrow

b. O2 Bar Graph

c. Icons - Operating Modes

d. Icons - Times

e. Icons - Am/Pm

f. Icons - Depths

g. ASC - Ascent Rate Indicator

h. Icon - Dive No.

i. Icon - Low Battery

i. O2 Bar Graph

j. Icons - Max Depth

k. Nitrogen Bar Graph

l. Icon - Log Mode

m. Icon - Temperature

c

d

e

f

g

h

j

i

a

k

l

m

b

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FEATURES and DISPLAYS

NOTE:  The Element will enter Dive Mode upon descent to 5 FT (1.5 M) if

first activated by push button or if Wet Activation was previously set ON.

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R

E

S

P

O

N SIBLE

D

IV

E

R

Be a - RESPONSIBLE DIVER at all times.

INTRODUCTION

Welcome to TUSA and thank you for choosing the Element !

It is extremely important that you read this manual in sequence

and understand it completely before attempting to use the

Element.

Remember that technology is no substitute for common sense,

and a dive computer only provides the person using it with

data, not the knowledge to use it.

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9

CONTROL BUTTON

The Control Button allows you to select display options and access specific information

when you want to see it.  It is also used to enter settings.

BAR GRAPHS

Nitrogen Loading Bar Graph (NiBG)

The NiBG (Fig. 1a) represents tissue loading of nitrogen, showing your relative no decom-

pression or decompression status.  As your depth and elapsed dive time increase, seg-

ments will add to the NiBG, and as you ascend to shallower depths, the segments will

recede, indicating that additional no decompression time is allowed for multilevel diving.

The Nitrogen Loading Bar Graph monitors 12 different nitrogen compartments simulta-

neously and displays the one that is in control of your dive.  It is divided into a No Decom-

pression (normal) zone, a Caution zone (also No Decompression), and a Decompression

(danger) zone.

While you cannot provide a guarantee against the occurrence

of decompression sickness, you may choose your own personal

zone of caution based upon age, physique, excessive weight,

etc., to reduce the statistical risk.

NOTE:  Displays associated with oxygen and the O2

Bar Graph will only appear if FO2 has been set at a

value other than 'Air' (e.g., a numerical value).

Fig. 1 - NiBG

a

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Oxygen Accumulation Bar Graph (O2BG)

The O2BG (Fig. 2a) represents oxygen accumulation, showing

the maximum of either per dive accumulated oxygen, or 24 hour

period accumulated oxygen.

As your oxygen exposure (accumulation) increases during the

dive, segments will add to the O2BG, and as loading de-

creases, it will begin to recede, indicating that additional

exposure is allowed for that dive and 24 hour period.

Ascent Rate Indicator (ASC)

The ASC (Fig. 2b) provides a visual representation of ascent

speed (i.e., an ascent speedometer).

The segments of the ASC represent two sets of speeds which

change at a reference Depth of 60 FT (18 M).  Refer to the chart

for segment values.

WARNING:  At depths greater than 60 FT (18 M),

ascent rates should not exceed  60 feet per minute

(18 meters per minute).  At depths of 60 FT (18 M)

and shallower, ascent rates should not exceed 30

feet per minute (9 meters per minute).

Fig. 2 - O2BG and ASC

ASC values

Deeper than 60 FT (18 M)

Segments

Ascent Rate =

Displayed

FPM

MPM

0

0 - 20

0 - 6

1

21-50

6.5-15

2

51-60

15.5-18

3

>60

>18

60 FT (18 M) & Shallower

Segments

Ascent Rate =

Displayed

FPM

MPM

0

0 - 10

0 - 3

1

11-25

3.5-7.5

2

26-30

8-9

3

>30

>9

a

b

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11

ALPHA / NUMERIC DISPLAYS

Each numeric and graphic display represents a

unique piece of information.  It is imperative that you

understand the formats, ranges, and values of the

information represented to avoid any possible mis-

understanding that could result in error.

Depth Displays

During a dive, the Current Depth display (Fig. 3Aa), indicates

depths from 0 to 330 FT (99.9 M) in 1 FT (0.1 M) increments.

The Maximum Depth reached during that dive is displayed

on an Alternate screen by pressing the button (Fig. 3Ba).

During a No Deco Dive Deep and Safety Stops and while in

Decompression, the required Stop Depth is displayed on the

Main (Fig. 4a).

Fig. 4 - STOP DEPTH

a

a

Fig. 3A - CURRENT DEPTH

a

Fig. 3B - MAX DEPTH

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