Oceanic Veo 180Nx User manual

Veo 180Nx
Personal Dive Computer
Operating Manual

2
LIMITED TWO-YEAR WARRANTY
For details, refer to the Product Warranty Registration Card provided.
COPYRIGHT NOTICE
This operating manual is copyrighted, all rights are reserved. It may not, in whole or in part, be
copied, photocopied, reproduced, translated, or reduced to any electronic medium or machine
readable form without prior consent in writing from Oceanic / 2002 Design.
Veo 180Nx Operating Manual, Doc. No. 12-2621
© 2002 Design, 2004
San Leandro, Ca. USA 94577
TRADEMARK NOTICE
Oceanic, the Oceanic logo, Veo 180Nx, the Veo 180Nx logo, Smart Glo, and Oceanglo are all
registered and unregistered trademarks of Oceanic. All rights are reserved.
PATENT NOTICE
U.S. Patents have been issued, or applied for, to protect the following design features:
Dive Time Remaining (U.S. Patent no. 4,586,136), Data Sensing and Processing Device (U.S. Patent
no. 4,882,678), and Variable Ascent Rate Indicator (U.S. Patent no. 5,156,055). User Setable
Display (U.S. Patent no. 5,845,235) is owned by Suunto Oy (Finland).
DECOMPRESSION MODEL
The programs within the Veo 180Nx simulate the absorption of nitrogen into the body by using a
mathematical model. This model is merely a way to apply a limited set of data to a large range of
experiences. The Veo 180Nx dive computer model is based upon the latest research and experiments
in decompression theory. Still, using the Veo 180Nx, just as using the U.S. Navy (or
other) No Decompression Tables, is no guarantee of avoiding decompression sick-
ness, i.e. the bends. Every divers physiology is different, and can even vary from day to day.
No machine can predict how your body will react to a particular dive profile.

3
CONTENTS
LIMITED TWO-YEAR WARRANTY ............................................................................................................................ 2
NOTICES ..................................................................................................................................................................... 2
DECOMPRESSION MODEL ....................................................................................................................................... 2
FEATURES AND DISPLAYS............................................................................................. 7
INTRODUCTION .......................................................................................................................................................... 8
CONTROL BUTTON ................................................................................................................................................... 8
BAR GRAPHS ............................................................................................................................................................. 9
Tissue Loading Bar Graph (TLBG) ......................................................................................................................... 9
Oxygen Bar Graph (O2BG) .................................................................................................................................. 10
Variable As ent Rate Indi ator (VARI) .................................................................................................................. 10
ALPHA / NUMERIC DISPLAYS ................................................................................................................................. 11
Depth Displays ...................................................................................................................................................... 11
Time and Date Displays ....................................................................................................................................... 12
Temperature Display............................................................................................................................................. 13
AUDIBLE ALARM ...................................................................................................................................................... 13
BACKLIGHT .............................................................................................................................................................. 14
POWER SUPPLY ...................................................................................................................................................... 14
Battery Indi ator ................................................................................................................................................... 14
Low Battery Condition .......................................................................................................................................... 15
FO2 MODE ................................................................................................................................................................ 1
FO2 50% Default .................................................................................................................................................. 17
ACTIVATION AND SETUP .............................................................................................. 19
ACTIVATION .............................................................................................................................................................. 20
Ba kup A tivation ................................................................................................................................................. 21
SURFACE SEQUENCE ............................................................................................................................................. 21
SURFACE MODE ...................................................................................................................................................... 21

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CONTENTS (continu d)
SET MODE ................................................................................................................................................................ 22
Set Mode A ess and Timing ............................................................................................................................... 22
TO SET FO2 ......................................................................................................................................................... 23
PC INTERFACE .................................................................................................................................................... 24
TO SET UNITS OF MEASURE ............................................................................................................................ 25
TO SET HOUR FORMAT ..................................................................................................................................... 26
TO SET TIME ....................................................................................................................................................... 27
TO SET DATE ...................................................................................................................................................... 28
TO SET PO2 ALARM ........................................................................................................................................... 29
TO SET FO2 50% DEFAULT ............................................................................................................................... 30
TO SET DIGITAL GAUGE MODE ........................................................................................................................ 31
TO SET WATER ACTIVATION ............................................................................................................................. 32
PLAN AND DIVE MODES ............................................................................................... 33
PRE DIVE PLANNING SEQUENCETM ...................................................................................................................... 34
TISSUE LOADING BAR GRAPH .............................................................................................................................. 3
OXYGEN ACCUMULATION BAR GRAPH ............................................................................................................... 3
VARIABLE ASCENT RATE INDICATOR .................................................................................................................. 3
CONTROL OF DISPLAYS ......................................................................................................................................... 37
NO DECOMPRESSION DIVE MODE ....................................................................................................................... 37
No De o Dive Mode Safety Stop .......................................................................................................................... 40
DECOMPRESSION DIVE MODE .............................................................................................................................. 40
VIOLATION MODES .................................................................................................................................................. 43
Conditional Violation Mode ................................................................................................................................... 44
Delayed Violation Modes ...................................................................................................................................... 45
Immediate Violation Mode and Gauge Mode ....................................................................................................... 46
HIGH PO2 DIVE MODE............................................................................................................................................. 48
HIGH OXYGEN ACCUMULATION ............................................................................................................................ 49
USER SET DIGITAL GAUGE MODE ........................................................................................................................ 50

5
CONTENTS (continu d)
POST DIVE MODES ....................................................................................................... 51
POST DIVE SURFACE MODE .................................................................................................................................. 52
TRANSITION PERIOD .............................................................................................................................................. 52
AFTER THE TRANSITION PERIOD (THE FIRST 2 HOURS) .................................................................................. 53
Time to Fly/Desaturate ......................................................................................................................................... 54
Pre Dive Planning Sequen e ............................................................................................................................... 55
Log Mode .............................................................................................................................................................. 55
AFTER THE FIRST 2 HOURS .................................................................................................................................. 57
WET CONTACTS ....................................................................................................................................................... 58
DOWNLOADING DATA TO A PC .............................................................................................................................. 59
RESET FEATURE ...................................................................................................................................................... 0
GENERAL ....................................................................................................................... 61
CARE AND CLEANING ............................................................................................................................................. 2
INSPECTIONS AND SERVICE ................................................................................................................................. 2
MODULE REMOVAL FROM A BOOT ...................................................................................................................... 4
BATTERY REPLACEMENT ...................................................................................................................................... 5
RETURNING A MODULE TO A BOOT ..................................................................................................................... 9
ALTITUDE COMPENSATION .................................................................................................................................... 70
SPECIFICATIONS ..................................................................................................................................................... 71
NOTES ....................................................................................................................................................................... 7
NOTES ....................................................................................................................................................................... 77
OCEANIC WORLD WIDE ......................................................................................................................................... 78
SERVICE RECORD ................................................................................................................................................... 79
Pay special attention to items marked
with this Warning symbol.

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LCD DISPLAY
Components:
a. I on - Operating Mode
b. Battery Indi ator
. O2 (oxygen) Bar Graph
d. I on - Time
e. Variable As ent Rate Indi ator
f. Graphi - As ent Too Fast
g. Graphi - Depth
h. I on - Dive No. (Log only)
i. I on - Log Mode
j. Graphi - Maximum Depth
k. I on - Temperature
l. Tissue Loading Bar Graph
m. I on - Alarm Set
n. Graphi - Maximum Depth
o. I on - Des end Arrow
I on - De o Ceiling Stop Bar
I on - As end Arrow
a
b
c
d
e
f
g
h
i
j
k
l
m
no

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FEATURES and DISPLAYS
WARNING: Prior to diving with th V o 180Nx, you must also
r ad and und rstand th Oc anic Div Comput r Saf ty and
R f r nc Manual, Doc. No. 12-2262, which provid s Important
Warnings and Saf ty R comm ndations as w ll as g n ral
product information.

8
INTRODUCTION
Welcome to Oceanic and thank you for choosing the Veo 180Nx !
It is extremely important that you read this Operating Manual in
sequence and understand it completely before attempting to use the
Veo 180Nx.
It is equally important that you read the Oceanic Dive Computer
Safety and Reference Manual (Doc. No. 12-2262) provided with
your Veo 180Nx. It contains information that you must become
familiar with prior to diving with your Veo 180Nx.
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.
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 and activate the Backlight.
R
E
S
P
O
N
S
I
B
L
E
D
I
V
E
R
B a - RESPONSIBLE DIVER at all tim s.

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BAR GRAPHS
Tissu Loading Bar Graph (TLBG)
The Tissue Loading Bar Graph (Fig. 1a) represents tissue loading
of nitrogen, showing your relative no decompression or decom-
pression status. As your depth and elapsed dive time increase,
segments will add to the Graph, and as you ascend to shallower
depths, the Bar Graph will begin to recede, indicating that
additional no decompression time is allowed for multilevel
diving.
The Tissue Loading Bar Graph monitors 12 different nitrogen
compartments simultaneously and displays the one that is in
control of your dive. It is divided into a green No Decompres-
sion (normal) zone, a yellow Caution zone (also No Decompres-
sion), and a red 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 associat d with oxyg n and th O2
Bar Graph will only app ar if FO2 has b n s t at a
valu oth r than 'Air' ( .g., a num rical valu ). Fig. 1 - TLBG
a

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Oxyg n Accumulation Bar Graph (O2BG)
The O2 Bar Graph (Fig. 2a) represents oxygen loading, show-
ing 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 Bar Graph, and as loading
decreases, it will begin to recede, indicating that additional
exposure is allowed for that dive and 24 hour period.
Variabl Asc nt Rat Indicator (VARI)
The Variable Ascent Rate Indicator (Fig. 2b) provides a visual
representation of ascent speed (i.e., an ascent speedometer).
Green is a 'normal' rate, yellow a 'caution' rate, and red is 'Too
Fast'.
The segments of the Variable Ascent Rate Indicator represent
two sets of speeds which change at a reference depth of 60 feet
(18 meters). Refer to the chart for segment values.
WARNING: At d pths gr at r than 60 f t (18
m t rs), asc nt rat s should not xc d 60 f t p r
minut (18 m t rs p r minut ). At d pths of 60 f t
(18 m t rs) and shallow r, asc nt rat s should not
Fig. 2 - O2BG and VARI
Variable As ent Rate Indi ator
Deeper than 60 feet (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 feet (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
3 309
a
b

11
xc d 30 f t p r minut (9 m t rs p r minut ).
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.
D pth Displays
During a dive, the Current Depth display (Fig. 3a), indicates
depths from 0 to 330 feet (99.9 meters) in 1 foot (.1 meter)
increments.
By pressing the button, the Maximum Depth reached during
that dive will be displayed in the center/left portion of the
display (Fig. 4a).
 When the unit is set to operate as a digital depth gauge/
timer (referred to as User Set Gauge Mode), the Depth
Display range is 'extended' to 399 feet (120 meters). At
depths greater than 99.9 meters it will indicate metric values
in increments of 1 meter.
During a Decompression Dive, the required Ceiling Stop
Depth is displayed in the center of the screen. Maximum Depth
Fig. 4 - Maximum Depth
a
a
Fig. 3 - Current Depth

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can be viewed by pressing the button.
Tim and Dat Displays
Time displays are shown in hour:minute format (i.e., 1:16
represents 1 hour and 16 minutes, not 116 minutes!). The colon
that separates hours and minutes blinks once per second when
the display is indicating real time (e.g., Elapsed Dive Time), and
is solid (non-blinking) when times are calculated projections
(e.g., Time to Fly).
The Main Time display is located in the lower portion of the
display (Fig. 5a) and a second time display (Fig. 5b) is
located in the center/right. Both displays are identified by a
clock icon.
 Time of Day can be set for 12 hour format (Am/Pm) or 24
hour format.
Date (Month and Day) is displayed in the center/left portion of
the screen (Fig. 6a) only to identify dive data while it is viewed
in the Log Mode. Year is only displayed when setting the Date.
 When Units of Measure are set for 'Imperial', the Month
appears to the left of Day. When set for Metric, the Month
appears to the right of Day.
Fig. 5 - Time Displays
Fig. 6 - Date Display
a
b
a

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T mp ratur Display
Ambient Temperature is displayed in the center/left portion
of the screen (Fig. 7a) while in the Surface Mode and Log
Mode, and can be viewed as part of an Alternate Display when
the button is pressed while in a dive mode.
NOTE: Th Informational Displays ar d scrib d in
d tail as th various op rating mod s th y app ar in
ar pr s nt d throughout this manual.
AUDIBLE ALARM
When warning situations activate the Alarm, the unit will emit a
beeping tone for 10 seconds. The Alarm will sound again upon
reentry into the warning situation, or entry into another type of
warning situation. A red LED Warning Light is synchronized
with the Audible Alarm and will flash when the Alarm emits a
tone.
Situations that will activat th Alarm includ -
 Entry into Decompression Mode
 PO2 => than the Max PO2 Alarm or => 1.60 ATA.
 Depth => 330 feet/99.9 meters.
 O2 Accumulation => 300 OTU.
 Ascending above a required Decompression stop depth.
 Ascent rate exceeds the allowed limit.
 Decompression requires a stop depth=> 70 feet/21 meters.
 Being on the surface for 5 minutes after a Conditional Viola-
tion (Permanent Violation).
Fig. 7 - Temperature Display
a

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BACKLIGHT
To activate the Backlight while on the surface, press and release
the button momentarily (less than 2 seconds). During a dive
depress the button for 2 seconds
 While on the surface or during a dive, the Smart Glo®
feature senses the intensity of natural light present. If a low
level of light is present, the Backlight will activate and illumi-
nate the display for 10 seconds.
 The Backlight does not operate during a Low Battery condi-
tion.
 Press/release the button again to activate as desired.
POWER SUPPLY
The Veo 180Nx utilizes one (1) type CR 2450 Lithium 3 volt cell
that should provide 300 hours of continuous, or 50 activation
periods, of operation. If you conduct 1 dive each time the unit is
activated, you should obtain approximately 50 dives. If you
conduct 3 dives each time the unit is activated, you should
obtain approximately 150 dives.
Batt ry Indicator
A Battery Indicator provides an indication of battery condition.
When power is sufficient for normal unit operation, the Indicator
will be displayed during Surface Mode (Fig. 8a). The Indicator
Fig. 8 - Battery Indi ator a

15
will not be displayed during Dive Mode(s).
Low Batt ry Condition
Voltage level is checked upon activation and every (1) minute
during operation on the surface.
 When 75 % of the Rated Power has been consumed, the
lower bar of the Battery Indicator (only segment) will be
displayed, and the outline of the Indicator will flash once per
second (Fig. 9) as a warning that the Battery is to be re-
placed prior to conducting any further dives.
 Upon decreasing to a voltage level that will no longer
sustain proper operation, the Indicator will flash 5 times
followed by shutdown of the unit.
 If a Low Battery Condition exists when the unit is activated
(by pressing the button), the graphic bAT and the Battery
Indicator will appear flashing for 5 seconds followed by
shutdown of the unit.
 If the button is not pressed to activate the unit prior to a dive,
and a Low Battery Condition exists, the Battery Indicator will
appear flashing as a warning upon descent past 4 feet (1.2
meters). No other information will be displayed.
 If the unit did not display a Low Battery Condition 'prior to'
entering the Dive Mode, and a Low Battery Condition occurs
during the dive, there will be sufficient battery power to
maintain unit operation for the remainder of 'that dive'. The
Battery Indicator will appear after the dive in Surface Mode.
Fig. 9 -Low Battery Condition

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FO2 MODE
After Activation, the Veo 180Nx will operate as an Air computer
without displaying information associated with oxygen calcula-
tions, unless it is set for a percentage of oxygen (FO2) other than
Air (a numerical value between 21 and 50 %).
When set with an FO2 value of 'Air' (Fig. 10), the Veo
180Nx will perform calculations the same as if FO2 were set for
21% oxygen, internally accounting for oxygen loading for any
subsequent Nitrox dives. However, oxygen related displays,
warnings, and the O2 Bar Graph will not appear on the display
for that dive, or subsequent dives, unless FO2 is set for a numeri-
cal value (21 - 50).
Once a dive is made with the unit set as a nitrox computer (FO2
set for a numerical value), it cannot be programmed to operate
as an 'Air' computer until 24 hours after the last dive. 'Air' will
not be displayed as an option in the FO2 Mode. However, you
can set FO2 for 21% for use with Air.
When FO2 is set at a value of 21% (Fig. 11), the unit will
remain set at 21% for subsequent nitrox dives until FO2 is set to
a higher value, or until it automatically turns off and is reacti-
vated.
S tting FO2 is d scrib d on Pag 23.
Fig. 10 - FO2 set for Air
Fig. 11 - FO2 set for 21%

17
Fig. 12 - FO2 Default ON
Fig. 13 - FO2 Default OFF
FO2 50% D fault
If the Default is set to ON (Fig. 12) and FO2 is set to a
value 'greater than 21%', the FO2 set point value will auto-
matically revert to 50% 10 minutes after that dive. The
Maximum Depth that can be achieved with a PO2 of 1.60
ATA will also be displayed.
 FO2 must therefore be reset for each repetitive nitrox dive,
or the value will automatically 'default' to 50(%) and the
dives will be calculated based on 50% O2 (50% nitrogen)
for oxygen calculations and 21% O2 (79% nitrogen) for
nitrogen calculations.
If the Default is set to OFF (Fig. 13), the FO2 value for
repetitive dives remains the same as previously set until the set
point is manually changed.

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KEY TO SETTING INSTRUCTIONS
PAGE:
23 SET FO2 (Air, 21 to 50%)
24 PC (DOWNLOAD)
25 SET UNITS OF MEASURE (Imperial/Metric)
26 SET HOUR FORMAT (12/24)
27 SET TIME OF DAY (Hour/Minute)
28 SET DATE (Year/Month/Day)
29 SET PO2 ALARM (1.20 to 1.60 ATA)
30 SET FO2 50% DEFAULT (On/Off)
31 SET DIGITAL GAUGE MODE (On/Off)
32 SET WATER ACTIVATION (On/Off)

19
ACTIVATION and SETUP
WARNING: Prior to diving with th V o 180Nx, you must also
r ad and und rstand th Oc anic Div Comput r Saf ty and
R f r nc Manual, Doc. No. 12-2262, which provid s Important
Warnings and Saf ty R comm ndations as w ll as g n ral
product information.

20
ACTIVATION
WARNING: If th unit is activat d at l vations
high r than 14,000 f t (4,267 m t rs), it will p r-
form a diagnostic ch ck and imm diat ly shutdown.
To Activate the Veo 180Nx, press and release the Button.
 Upon manual activation, the unit will enter Diagnostic
Mode (Fig. 14), displaying all segments of the LCD as 8's,
followed by dashes (- -), then a countdown from 9 to 0.
Diagnostic Mode checks the display and Battery voltage to
ensure that everything is within tolerance and functioning
properly.
 When the button is held depressed when the Diagnostic
countdown reaches 00, an External Access request is
initiated. A Serial Number screen appears displaying the
units Serial Number and firmware code Revision Number
as long as the button is held depressed (Fig. 15). Upon
releasing the button, the unit shuts Off.
 After manual activation, it will also check the ambient
barometric pressure, and calibrate its present depth as
zero. At elevations of 2,000 feet (610 meters) or higher, it
will recalibrate itself to measure depth in feet of fresh water
instead of feet of sea water.
Fig. 14 - Diagnosti Mode
Fig. 15 - Serial Number