XP 5 (1,3MB
SEEMANN
XP 5
OWNER`S GUIDE
LIMITED TWO-YEAR WARRANTY
For details, refer to the Product Warranty Registration Card provided.
COPYRIGHT NOTICE
This owner’s guide 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 Seemann.
SEEMANN SUB GmbH & Co. KG
Johann-Höllfritsch-Str. 47
D-90530 Wendelstein
TRADEMARK NOTICE
XP 5, Seemann and the Semann logo are all registered and unregistered trademarks of Seenmann
Sub GmbH & Co. KG. 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 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 XP 5 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 XP 5 dive computer model is based upon the latest research and experiments in decompression theory. Still, using the XP 5, just as using the U.S. Navy (or other) No Decompression Tables, is no guarantee of avoiding decompression sickness, 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.
2
CONTENTS
WARRANTY .................................................................................................................................................................. 2
NOTICES ...................................................................................................................................................................... 2
DECOMPRESSION MODEL ......................................................................................................................................... 2
FEATURES AND DISPLAYS .............................................................................................. 7
CONTROL BUTTONS ................................................................................................................................................... 9
BAR GRAPHS .............................................................................................................................................................. 9
Nitrogen Bar Graph ................................................................................................................................................... 9
Oxygen (O2) Bar Graph ........................................................................................................................................... 10
Variable Ascent Rate Indicator ................................................................................................................................. 10
INFORMATIONAL DISPLAYS ...................................................................................................................................... 11
Depth Displays ....................................................................................................................................................... 11
Time and Date Displays .......................................................................................................................................... 11
Temperature Display ............................................................................................................................................... 12
AUDIBLE ALARM ...................................................................................................................................................... 13
BACKLIGHT .............................................................................................................................................................. 14
SERIAL NUMBER & SOFTWARE VERSION ........................................................................................................... 14
POWER SUPPLY ....................................................................................................................................................... 15
Battery Indicator ..................................................................................................................................................... 15
Low Battery Condition ............................................................................................................................................. 16
FO2 MODE ................................................................................................................................................................. 17
FO2 50% Default .................................................................................................................................................... 18
DIVE TIME REMAINING ............................................................................................................................................ 19
ACTIVATION AND SETUP ............................................................................................... 23
ACTIVATION ............................................................................................................................................................... 24
SURFACE MODE ........................................................................................................................................................ 25
SET MODES ............................................................................................................................................................... 26
ENTERING SETTINGS -SET MODE #1 ................................................................................................................... 27
ENTERING SETTINGS -SET MODE #2 ................................................................................................................... 31
3
CONTENTS (continued)
PRE DIVE PLAN MODE ................................................................................................... 45
DIVE PLANNER ......................................................................................................................................................... 46
DIVE MODES ................................................................................................................... 49
DIVE MODE BAR GRAPHS ........................................................................................................................................ 50
CONTROL OF DISPLAYS ........................................................................................................................................... 50
NO DECOMPRESSION DIVE MODE .......................................................................................................................... 51
DECOMPRESSION DIVE MODE ................................................................................................................................ 52
VIOLATION MODES .................................................................................................................................................... 56
Conditional Violation Mode ...................................................................................................................................... 57
Delayed Violation Modes ......................................................................................................................................... 58
Immediate Violation Mode and Gauge Mode ............................................................................................................ 59
HIGH PO2 DIVE MODE ............................................................................................................................................... 61
HIGH OXYGEN ACCUMULATION ............................................................................................................................... 62
USER SET DIGITAL GAUGE MODE ........................................................................................................................... 64
POST DIVE MODES ........................................................................................................ 65
POST DIVE SURFACE MODE .................................................................................................................................... 66
TRANSITION PERIOD ................................................................................................................................................ 66
AFTER THE TRANSITION PERIOD (THE FIRST 2 HOURS) ....................................................................................... 68
To access the Dive Planner (Plan Mode) ................................................................................................................... 68
To access the Time to Fly Countdown ....................................................................................................................... 69
To access the Time to Desaturate Countdown ........................................................................................................... 70
LOG MODE ............................................................................................................................................................ 70
AFTER THE FIRST 2 HOURS ..................................................................................................................................... 73
DOWNLOADING DATA TO A PC ................................................................................................................................. 74
SIMULATOR (DEMO) MODE .......................................................................................... 75
RESET FUNCTION ........................................................................................................... 81
4
CONTENTS (continued)
CARE, MAINTENANCE, AND SERVICE ......................................................................... 81
CARE AND CLEANING ............................................................................................................................................. 82
INSPECTIONS AND SERVICE .................................................................................................................................. 83
BATTERY REPLACEMENT ....................................................................................................................................... 84
REFERENCE ................................................................................................................... 89
DECOMPRESSION MODEL ....................................................................................................................................... 90
TISSUE COMPARTMENT CONTROL ......................................................................................................................... 90
NO DECOMPRESSION LIMITS ................................................................................................................................... 91
OXYGEN EXPOSURE LIMITS .................................................................................................................................... 92
ALTITUDE DIVING ...................................................................................................................................................... 93
FLYING AFTER DIVING .............................................................................................................................................. 94
SPECIFICATIONS ............................................................................................................ 96
GLOSSARY ................................................................................................................... 101
SERVICE RECORD ....................................................................................................... 105
Pay special attention to items marked with this Warning symbol.
5
WARNINGS AND SAFETY RECOMMENDATIONS
• The XP 5 is not intended for use by military or commercial divers.
• The XP 5 is intended for use by recreational divers who have successfully completed a
nationally recognized course in scuba diving, and diving with enriched nitrogen-oxygen
(nitrox) mixtures.
• It must not be used by untrained persons who may not have knowledge of the potential risks
and hazards of scuba diving, and diving with nitrox.
• You must obtain scuba certification, and certification in diving with nitrox before using
the XP 5, if you have not already done so.
• It is NOT for use by military and commercial divers.
• It should NOT be utilized for any competitive, or repetitive square wave or unplanned decompression diving, it is intended solely for recreational use and multilevel diving.
• As with all underwater life support equipment, improper use or misuse of this product can
cause serious injury or death.
• Conduct your dives in such a manner so as to insure that you continuously check the
computer's proper function.
• If you do not fully understand how to use this dive computer, or if you have any questions,
you should seek instruction in its use from your authorized AERIS dealer before you utilize
this product.
• Never participate in sharing or swapping of a dive computer. Doing so may result in injury or
death.
• If you exceed certain limits, the XP 5 will not be able to tell you how to get safely back to
the surface. These situations exceed tested limits and can result in loss of some XP 5
functions for 24 hours after the dive in which a Violation occurred.
• The XP 5 enters Immediate Violation Mode when a situation totally exceeds its capacity to
predict an ascent procedure. These dives represent gross excursions into decompression that are beyond the boundaries and spirit of the XP 5 design. If you are following
these dive profiles, SEEMANN advises you not to use an XP 5 dive computer.
6
FEATURES and DISPLAYS
7
WELCOME TO SEEMANN !
AND
THANK YOU FOR CHOOSING THE XP 5 !
Your XP 5 presents the information that you need before, during, and after your air (or
nitrox) dives using a combination of easy to read displays and identification icons. It
can also be set to operate simply as a digital depth gauge/timer. This instructional
guide is intended to help you become familiar with the functions and features available
and show you examples of displays that you could expect to see in the various operational modes. Relax and read through the complete owner's guide.
Remember that the rules you learned in your basic scuba certification course(s) still
apply to the diving you will do while using a dive computer - some will become even
more important. 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.
Since the XP 5 can be used when diving with either Air or Nitrox, the term Breathing
Gas is used in this manual.
• Breathing Gas is the gaseous mixture breathed during a dive.
• Air is a breathing gas that contains approximately 21% oxygen and 79% nitrogen
(nature's common nitrogen-oxygen mixture).
• Nitrox is a nitrogen-oxygen breathing gas that contains a higher fraction of oxygen
(22 to 50%) than air.
8
CONTROL BUTTONS
The two Control Buttons allow you to select display options, access specific
information when you want to see it, and activate the Backlight.
The Front button is named Advance (Fig. 1a) and the Side button Select (Fig. 1b).
BAR GRAPHS
Nitrogen Bar Graph
The Nitrogen Bar Graph (Fig. 1c) represents tissue loading of nitrogen, showing your
relative no decompression or decompression 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
b
time is allowed for multilevel diving.
The Nitrogen Bar Graph monitors 12 different nitrogen com- c
partments simultaneously and displays the one that is in
control of your dive. It is divided into a green No
Decompression (normal) zone, a yellow Caution zone (also
No Decompression), 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,
a
excessive weight, etc., to reduce the statistical risk.
Fig. 1 - Buttons and NiBG
9
b
Fig. 2 - O2BG & VARI
Deeper than 60 feet (18 m)
Segments
Ascent Rate =
Displayed
FPM
MPM
0
0-20
0-6
1
21-30 6.5-9
2
31-40 9.5-12
3
41-50 12.5-15
4
51-60 15.5-18
5
>60
>18
60 feet (18 m) & Shallower
Segments
Ascent Rate =
Displayed
FPM
MPM
0
0-10
0-3
1
11-15 3.5-4.5
2
16-20 5-6
3
21-25 6.5-7.5
4
26-30 8-9
5
>30
>9
Variable Ascent Rate Indicator
10
Oxygen (O2) Accumulation Bar Graph
The O2 Bar Graph (Fig. 2a) represents oxygen loading,
your relative oxygen tolerance dosage (OTU), showing the
maximum of either per dive accumulated oxygen, or 24 hour
period accumulated oxygen. As your 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.
NOTE: Displays associated with oxygen and
the O2 Bar Graph will only appear if FO2 has
been set at a value other than 'Air'.
Variable Ascent Rate Indicator
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 2 sets of speeds which
change at a reference depth of 60 feet (18 meters). Refer
to the chart for segment values.
WARNING: At depths greater than 60 feet (18
m), ascent rates should not exceed 60 feet per
minute (18 mpm). At depths of 60 feet (18 m)
and shallower, ascent rates should not exceed
30 feet per minute (9 mpm).
INFORMATIONAL 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 misunderstanding that could
result in error.
Depth 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. The Maximum Depth reached during
that dive will be displayed in the lower window of the display (Fig. 3b).
• 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 m). At
depths greater than 99.9 m, it will indicate metric values in increments of 1 m.
During a Decompression Dive, the required Ceiling Stop
Depth is displayed in the lower window. Max. Depth can
then be viewed by pressing the Advance (Front) button.
Time and Date Displays
Time displays are shown in hour:minute format (i.e., 1:22
represents 1 hour and 22 minutes, not 122 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).
Fig. 3 - Depth Displays
11
b
Due to the importance of the information it presents, the
Main Time display (Fig. 4a) is configured with the largest
segments of the LCD. A second time display (Fig. 4b) is
located in the lower window. Both displays are identified
by a clock icon.
• Time of Day can be set for 12 hour format (Am/Pm) or
24 hour format.
a
Fig. 4 - Time Displays
Date is displayed in the lower screen only to identify dive
data while it is viewed in the Log Mode.
• 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.
a
Temperature Display
Ambient Temperature is displayed in the lower window
(Fig. 5a) while in the Surface Mode and can be viewed as
part of an Alternate Display when the Advance (Front) button is pressed while in a dive mode. If the Temperature exceeds a value of '99', 2 dashes ( - - ) will be displayed on
the screen until the unit's temperature decreases to '99'.
Fig. 5 - Temperature
12
NOTE: The Informational Displays are described in detail throughout this manual.
AUDIBLE ALARM
When warning situations activate the Alarm, the unit will emit a continuous tone for 30
seconds, or until the situation is corrected, or it is acknowledged by pressing the
Advance (Front) button for 2 seconds. If acknowledged by the user and the situation
corrected, the Alarm will sound again upon reentry into the warning situation, or entry
into another type of warning situation.
Warning situations that will sound the Alarm, if it is turned ON, include • Entry into Decompression Mode
• PO2 => than the Max PO2 Alarm (a user setting), or => 1.60 ATA.
• Descent deeper than the Max Depth Alarm (a user setting).
• Nitrogen Bar Graph Alarm (a user setting).
• Dive Time Remaining Alarm (a user setting).
• Elapsed Dive Time Alarm (a user setting).
• O2 Accumulation => allowable per dive limit, or limit for a 24 hour period.
• Ascending above a required Decompression stop depth for < 5min. (Cond.Violation).
• Asc. rate exceeds 60fpm (18mpm) if > 60ft (18m), or 30fpm (9mpm) if <= 60ft (18m).
During the following situations, the 30 second continuous tone will be followed by a 5 second steady beep that will not turn off when acknowledged,
even if it was user Set OFF • Ascending above a required Decompression stop depth for more > 5 min. (Delayed
Violation).
• Decompression requires a ceiling stop depth => 70 FT (18 M).
• Being on the surface for 5 minutes after a Conditional Violation (Perm.Violation).
13
BACKLIGHT
To activate the Backlight while in the Surface Mode or
during a dive• Press and release the Select (Side) button.
• The screens will be illuminated for 3, 5, or 7 seconds (a
user setting). Press and release the button again to
activate as desired.
• The Backlight does not operate during a Low Battery
condition.
DISPLAYING SERIAL NUMBER AND SOFTWARE VERSION
After the activation the XP 5 goes in the diagnostic mode
where all the segments of the display are checked.
• For displaying the serial number and software version of
the computer keep the right Select - Button pressed until the
countdown of the diagnostic mode reaches 00. The
information will be displayed (Fig. 6). After releasing the
button the XP 5 will shut down and has to be restarted.
Fig. 6 - Serial Number
14
NOTE: SEEMANN recommends that you always
carry primary and backup dive lights when
conducting dives that could include low light
situations.
POWER SUPPLY
The XP 5 utilizes one (1) type CR 2450 Lithium 3 volt cell
that should provide approximately 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.
Battery
Indicator
A Battery Indicator provides an indication of battery condition. When power is sufficient for normal unit operation,
the Indicator (icon) will be displayed during Surface Mode
(Fig. 7a).
a
The Indicator will not be displayed during dive modes.
When a Low Battery Condition is sensed, the Indicator will
flash.
Fig. 7 - Battery Indicator
15
Low Battery Condition
Voltage level is checked upon activation and every 10 minutes during operation.
• If a Low Battery Condition exists when the unit is activated (by pressing the button), the Battery icon will appear flashing once per second for 5 seconds (Fig. 8) 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 Low
Battery icon 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 the Low Battery icon '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 Low Battery icon will appear upon surfacing
when Surface Mode is displayed.
When the Battery is removed, nitrogen and oxygen
calculations for repetitive dives are reset to zero after 10
seconds. Also, settings such as Time, Date, and FO2 must
be reset. If a new battery can be inserted within 10
seconds, the calculations and settings will be retained.
Fig. 8 - Low Battery
16
NOTE: Battery change procedures are
described on page 84 of this manual.
FO2 MODE
After Activation, the XP 5 will operate as an Air computer
without displaying information associated with oxygen calculations, unless it is set for a percentage of oxygen (FO2)
other than Air (numerical value between 21 and 50 %).
NOTE: Setting FO2 is described on Page 27.
When set with an FO2 value of 'Air' (Fig. 9), the XP 5 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 numerical value (21 - 50).
Once a dive is made with the unit set as a nitrox computer
(FO2 set for a numerical value), the unit 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. 10), 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
reactivated.
Fig. 9 - FO2 Air
Fig. 10 - FO2 of 21%
17
WARNING: The percentage of oxygen (FO2) in
the nitrox mix being used must be set 'before
each' nitrox dive, unless the FO2 50% Default
feature has been turned OFF.
FO2 50% Default
Fig. 11 - FO2 Default ON
FF
If the Default is set to ON and FO2 is set to a value
'greater than 21%', the FO2 set point value will
automatically revert to 50% 10 minutes after that dive (Fig.
11). 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.
WARNING: If you surface for greater than 10
minutes during a dive, a new descent will be
considered a new dive and FO2 must be reset.
If the Default is set to OFF, the FO2 value for repetitive
dives remains the same (Fig. 12) until setting is changed.
Fig. 12 - FO2 Default OFF
18
WARNING: Even if the Default is set to OFF, the
FO2 set point should be 'verified' before each
nitrox dive.
DIVE TIME REMAINING
One of the most important pieces of information on Aeris
dive computers is the 'Dive Time Remaining numeric
display'. The dive computer constantly monitors no decompression status and oxygen exposure.
The Dive Time Remaining* display will indicate the
time that is more critical for you at that particular
moment (i.e.; whichever time is the least amount
available). The specific time being displayed is identified
by the No Decompression Dive Time icon, or the O2 Time
icon.
(* This unique feature has been granted U.S. Patent No. 4,586,136.)
No Decompression Dive Time Remaining
No Decompression Dive Time Remaining is the maximum
amount of time that you can stay at your present depth
before entering a decompression situation. It is calculated
based on the amount of nitrogen absorbed by hypothetical
tissue compartments. The rates each of these compartments absorb and release nitrogen is mathematically modeled and compared against a maximum allowable nitrogen
level. Whichever one is closest to this maximum level is the
controlling compartment for that depth. Its resulting value
will be displayed numerically (Fig. 13a) along with the No
Decompression Dive icon and graphically as the Nitrogen
Bar Graph (Fig. 13b).
b
a
Fig. 13 - No Decompression
Dive Time Remaining
19
As you ascend from depth following a dive that has
approached the no decompression limit, the Nitrogen Bar
Graph will recede as control shifts to slower compartments. This is a feature of the decompression model that is
the basis for multilevel diving, one of the most important
advantages that Aeris dive computers offer.
The no decompression algorithm is based upon Haldane’s
theory using maximum allowable nitrogen levels developed
by Merrill Spencer. Repetitive diving control is based upon
experiments designed and conducted by Dr. Ray Rogers
and Dr. Michael Powell in 1987.
a
b
Fig. 14 - O2 Accumulation
Dive Time Remaining
20
Oxygen Accumulation Time Remaining
Oxygen accumulation (exposure) during a dive, or 24 hour
period, appears graphically as the Oxygen Accumulation
(O2) Bar Graph (Fig. 14a). As time remaining before
reaching the oxygen exposure limit decreases, segments
are added to the O2 Bar Graph.
When the amount of time remaining before reaching the
oxygen limit becomes less than the No Decompression Dive
Time Remaining, calculations for that depth will be controlled by oxygen. Oxygen Time Remaining will then appear as the main numeric time display (Fig. 14b) as signified
by the O2 Time icon appearing on the display. As oxygen
accumulation continues to increase, the O2 Bar Graph will
enter the yellow Caution Zone.
WARNINGS AND SAFETY RECOMMENDATIONS
• It should not be considered that the capabilities built into the XP 5 provide
an implied approval or consent from SEEMANN for individuals to exceed
the defined limits for recreational diving, as agreed on by all
internationally recognized training agencies.
• The oxygen features of the XP 5 are intended for use by recreational
divers trained for nitrox diving by an instructor certified by a recognized
training agency to teach diving with nitrox.
• Conducting repetitive dives using enriched nitrogen-oxygen mixtures can lead to
oxygen buildup, reducing oxygen tolerance while increasing the risk of pulmonary
oxygen toxicity.
•
The XP 5 provides information based upon a personal dive profile, and
therefore must not be shared between divers. It is impossible for two
divers to stay precisely together underwater, and your computer's dive
profile tracking of previous dives will be pertinent to you only. Nitrogen
and oxygen loading of a second user may be significantly different and
swapping dive computers could lead to inaccurate and dangerous predictions of decompression and oxygen accumulation status.
21
LCD LAYOUT
f
k
q
m
j
c
o
demo
d
p
n
l
a
b
g
i
h
e
22
Components:
a. Nitrogen Loading Bar Graph
b. Oxygen Accumulation Bar Graph
c. Variable Ascent Rate Indicator
d. Select (side) Button
e. Advance (front) Button
f. Graphic - Maximum Depth
g. Battery Consumption Indicator
h. Icon - Alarm
i. Icon - O2 (oxygen)
j. Icon - Log Mode
k. Graphic - Demo Mode
l. Graphic - Depth
m. Graphic - Ascent Too Fast
n. Icon - Operating Mode
o. Icon - Time
p. Icon - Ascend Arrow
Icon - Decompression Ceiling Bar
Icon - Descend Arrow
q. Icon - Temperature
r. Alarm Warning Light
WARNING: During Activation and Diagnostics, if any display or function varies from the information presented here, return the
XP 5 to your Authorized SEEMANN Dealer for inspection.
ACTIVATION and SETUP
23
ACTIVATION
To Activate the XP 5, press and release the Front (Advance) button.
Backup Activation (only functional if the Water Activation feature is set ON)
As a backup, the XP 5 will also automatically activate by water contact. This is
accomplished by bridging the gap between contacts located on the stems of the
control buttons and back of the module. The H2O graphic that will be displayed as an
indication is described later. If the Water Activation feature (a user setting) is set OFF,
the XP 5 will only activate by push button and only if shallower than 4ft (1.2m) depth.
Fig. 15 - Diagnostic Mode
24
• Upon manual activation, the unit will enter Diagnostic Mode
(Fig. 15), 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. The Battery icon will not be displayed during
Diagnostic Mode.
• 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.
• If values are acceptable, the unit will enter Surface Mode. If
any value is not acceptable, the unit will shut down in 5 sec.
• If no dive is made within 2 hours after initial activation, the
unit will automatically deactivate. If the wet contacts are still
bridged, the unit will then reactivate and display the `H2O`.
SURFACE MODE
Surface Mode, identified by the Surface Time icon (Fig.
16a), follows Diagnostic Mode after Activation. Information
includes Dive Number '0' (no dive made yet), the Battery
Consumption Indicator, Surface Time (with flashing colon),
Temperature (and icon), and Time of Day (with icon).
NOTE: If the wet contacts are bridged, the
graphic 'H2O' will appear in place of the dive
number '0' (Fig. 17). After the unit is rinsed
and dried, 'O' will replace 'H2O'.
a
Fig. 16 - Surface Mode
WARNING: If a Low Battery condition is displayed after diagnostics, DO NOT dive with the
XP 5 until the battery is changed.
While in the Surface Mode you can access various other
Modes that are described in detail throughout this manual.
• Press the Advance (Front) button to access a
sequence that includes Plan, Fly, DeSaturate, and Log
Modes .
• Press the Select (Side) button momentarily (less than 2
seconds) to activate the Backlight.
• Press Both buttons (simultaneously) to access Set and
Simulator Modes.
Fig. 17 - Surface Mode
(rinse and dry the unit)
25
SET MODES
Fig. 18 - Set Mode 1
Fig. 19 - Set Mode 2
26
To help simplify the operations you might perform at the
dive site, settings are divided into 2 categories. Set Mode
#1 includes several settings that you would change more
often and Set Mode #2 includes those items not likely to
change once you set them. Set Mode 2 can be accessed
by first entering settings in Set Mode 1, or by bypassing Set
Mode 1.
After gaining access to Set Mode 1 or Set Mode 2, settings
can be made in sequence one after the other, or you can
access a specific item that you want to set bypassing
others. The descriptions that follow describe access to
each setting from Surface Mode.
Set Mode Access Timing
While in Surface Mode, press Both buttons and hold • after 2 seconds, SET: 1 appears (Fig. 18)
• after 4 seconds, SET: 2 appears (Fig. 19)
• Access is gained to Set Modes by releasing the buttons
during the 2 second window in which SET: 1 or SET: 2
appears, then pressing the Advance (Front) button.
• If the buttons are held longer and SET 1 and 2 are both
bypassed, the unit will go to Simulator Mode which is
described on page 75.
• While in the Set Mode, if neither button is pressed for 2
minutes, the unit will revert to Surface Mode.
ENTERING SETTINGS -SET MODE #1
TO SET - FO2 (while in the Surface Mode)
Factory set for Air, FO2 can also be set to values between
21 and 50% in increments of 1%. FO2 defaults to the Air
setting whenever the XP 5 shuts off.
• Press Both buttons, release when SET: 1 appears.
• Press and release the Advance (Front) button, FO2
appears with the value flashing (Fig. 20).
Fig. 20 - Set FO2
• Press and release the Select (Side) button to increase
the FO2 value 1% per second from 21 to 50%, then
display 'Air' again.
• For each FO2 value that appears, the lower display indicates the Maximum Depth that can be achieved for a PO2
of 1.60 ATA (Fig. 21). If FO2 is set for Air, the lower display is blank.
• Press the Advance (Front) button to accept the setting
and advance to Set Depth Alarm, or press and hold Both
buttons for 2 seconds to revert to Surface Mode.
• The unit reverts to Surface Mode after 2 minutes if
neither button is pressed.
Fig. 21 - FO2 = 32%
27
TO SET - MAX DEPTH ALARM
(while in the Surface Mode)
Factory set for 330 feet, the Maximum Depth Alarm can be
set to values between 30 feet (3 meters) and 330 feet ( 99
meters) in increments of 10 foot (3 meters).
• Press Both buttons simultaneously, release when SET:
1 appears.
• Press and release the Advance (Front) button, FO2
appears with the value flashing.
• Press the Advance (Front) button 1 more time.
• The graphics MAX FEET and dEEP, and Alarm icon appear with the Max Depth value flashing (Fig. 22).
• Press and release the Select (Side) button until the
desired Alarm value appears.
• Press the Advance (Front) button to accept the setting
and advance to Elapsed Dive Time Alarm, or press and
hold Both buttons for 2 seconds to revert to Surface
Mode.
Fig. 22 - Set Depth Alarm
28
TO SET - ELAPSED DIVE TIME ALARM
(while in the Surface Mode)
Factory set for 0:00 hr:min, the Alarm can be set to
values between 0:10 and 3:00 hr:min in increments of
0:05 hr:min.
• Press Both buttons simultaneously, release when
SET: 1 appears.
• Press and release the Advance (Front) button, FO2
appears with the value flashing.
• Press the Advance (Front) button 2 more times.
• The graphic EdT, and Alarm and Dive Time icons
appear with the Elapsed Dive Time value flashing
(Fig. 23).
• Press and release the Select (Side) button until the
desired Alarm value appears, then release the button.
• Press the Advance (Front) button to accept the
setting and advance to PC Interface, or press and hold
Both buttons for 2 seconds to revert to Surface Mode.
Fig. 23 - Set Elapsed Time Alarm
29
PC INTERFACE
NOTE: For more
information regarding PC Interface, refer to page
74 of this manual
and to documents
provided with the
download product.
PC Interface is not a setting, it is included in the Set 1 menu
for easy access when data in the unit's memory is to be
downloaded (copied) to the PC download software
program for storage and viewing.
To download data (while in the Surface Mode) • Press Both buttons simultaneously, release when SET:
1 appears.
• Press and release the Advance (Front) button, FO2
appears with the value flashing.
• Press the Advance (Front) button 3 more times.
• The graphic PC appears with a 120 second countdown
(Fig. 24). Download must be initiated before the
countdown reaches 00.
• Download is initiated by the external device requesting
data transfer (i.e., the PC download program).
Fig. 24 - PC Interface
30
• Press the Advance (Front) button to revert to Surface
Mode.
ENTERING SETTINGS -SET MODE #2
NOTE: To return to Surface Mode at any time
while in Set Mode, press and hold Both
buttons for 2 seconds. The unit will
automatically revert to Surface Mode after 2
minutes if no button is pressed.
TO SET - UNITS OF MEASURE
(while in the Surface Mode)
Factory set for Imperial, Units of Measure can also be set
for Metric.
• Press Both buttons, release when SET: 2 appears.
• Press and release the Advance (Front) button, the Units
screen appears with the graphics F (or M), and the
Temperature icon and letter F (or C) appear with flashing (Fig. 25).
• Press the Select (Side) button to toggle between
Imperial (F ) and Metric (M and C) units.
• Press the Advance (Front) button to accept the setting
and advance to Set Hour Format, or press and hold Both
buttons for 2 seconds to revert to Surface Mode.
Fig. 25 - Set Units of Measure
31
TO SET - HOUR FORMAT
(while in the Surface Mode)
Factory set for 12 Hr (12: Am to 11: Pm), the Format can
also be set for 24 Hr (0: to 24: hours).
• Press Both buttons simultaneously, release when SET:
2 appears.
• Press and release the Advance (Front) button, the Units
screen appears with the set point flashing.
• Press the Advance (Front) button 1 more time.
• The graphic Hour appears with 12 (or 24) flashing (Fig.
26).
• Press and release the Select (Side) button to toggle
between 12 and 24
• Press the Advance (Front) button to accept the setting
and advance to Set Time of Day, or press and hold Both
buttons for 2 seconds to revert to Surface Mode.
Fig. 26 - Set Hour Format
32
TO SET - TIME OF DAY
(while in the Surface Mode)
Factory set for factory local time, the Time can be set to
values between 01:00 to 12:59 (Am/Pm) or 0:00 to 23:59
(24 Hr Format).
• Press Both buttons, release when SET: 2 appears.
• Press and release the Advance (Front) button, the Units
screen appears with the set point flashing.
Fig. 27 - Set Hour
• Press the Advance (Front) button 2 more times. The
Time appears with the Hour value flashing (Fig. 27).
• Press and release the Select (Side) button to advance
the Hour value in increments of one hour.
• Press the Advance (Front) button to accept the setting.
The Minute value flashes (Fig. 28),
• Press and release the Select (Side) button to advance
the Minute value in increments of one minute.
• Press the Advance (Front) button to accept the setting
and advance to Set Date, or press and hold Both buttons
for 2 seconds to revert to Surface Mode.
Fig. 28 - Set Minute
33
TO SET - YEAR (while in the Surface Mode)
Factory set for the factory local Date, the Date can be set
to values between 01/01/01 and 12/31/20.
Fig. 29 - Set Year
• After having set and accepted the Time of Day, the Date
appears with the graphic dAY, and Year value flashing
(Fig. 29).
• Press and release the Select (Side) button to advance
the Year value in increments of one year.
• Press the Advance (Front) button to accept the setting.
The Month value flashes (Fig. 30).
Fig. 30 - Set Month
• Press and release the Select (Side) button to advance
the Month value in increments of one month.
• Press the Advance (Front) button to accept the setting.
The Day value flashes (Fig. 31).
• Press and release the Select (Side) button to advance
the Day value in increments of one day.
Fig. 31 - Set Day
34
• Press the Advance (Front) button to accept the setting
and advance to Set Audible Alarm, or press and hold
Both buttons for 2 seconds to revert to Surface Mode.
TO SET - AUDIBLE ALARM
(while in the Surface Mode)
Factory set for ON, the Alarm can be also be set to OFF.
This setting also applies to the LED Warning Indicator that is
synchronized with the Audible.
When set OFF, the Alarm will not sound during the
conditions described on page 13.
• Press Both buttons, release when SET: 2 appears.
• Press and release the Advance (Front) button, the Units
screen appears with the set point flashing.
• Press the Advance (Front) button 7 more times.
• The graphic ALM and Alarm (speaker) icon appear
with ON (or OFF) flashing (Fig. 32).
• Press the Select (Side) button to toggle between ON
and OFF.
• Press the Advance (Front) button to accept the setting
and advance to Set Max Nitrogen Bar Graph Alarm, or
press and hold Both buttons for 2 seconds to revert to
Surface Mode.
Fig. 32- Set Audible Alarm
35
TO SET - MAX NITROGEN BAR GRAPH ALARM
(while in the Surface Mode)
Factory set for DECO (all 8 segments), the Maximum
Nitrogen Bar Graph (NiBG) Alarm can be set to values between DECO (8 segments) and 1 segment.
• Press Both buttons simultaneously, release when SET:
2 appears.
• Press and release the Advance (Front) button, the Units
screen appears with the set point flashing.
• Press the Advance (Front) button 8 more times.
• The graphic ndc and Alarm icon appear with the full
Nitrogen Bar Graph flashing (Fig. 33).
• Press and release the Select (Side) button to decrease
the number of segments one at a time.
Fig. 33 - Set Max Nitrogen Bar
Graph Alarm
36
• Press the Advance (Front) button to accept the setting
and advance to Set Dive Time Remaining Alarm, or press
and hold Both buttons for 2 seconds to revert to Surface
Mode.
TO SET - DIVE TIME REMAINING ALARM
(while in the Surface Mode)
Factory set for 0:00 (minutes), the Dive Time Remaining
Alarm can be set to values between 0:00 and 0:20
(minutes) in increments of 1 minute.
• Press Both buttons simultaneously, release when SET:
2 appears.
• Press and release the Advance (Front) button, the Units
screen appears with the set point flashing.
• Press the Advance (Front) button 9 more times.
• The graphic dtr and Alarm and Dive Mode icons appear
with the Dive Time Remaining value flashing (Fig.
34).
• Press and release the Select (Side) button to advance
the Alarm value in increments of one minute.
• Press the Advance (Front) button to accept the setting
and advance to Set Max PO2 Alarm, or press and hold
Both buttons for 2 seconds to revert to Surface Mode.
Fig. 34 - Set Dive Time Remaining
Alarm
37
TO SET - MAXIMUM PO2 ALARM
(while in the Surface Mode)
Factory set for 1.60 (ATA), the Maximum PO2 Alarm can
be set to values between 1.20 and 1.60 (ATA) in increments of .10 (ATA).
• Press Both buttons simultaneously, release when SET:
2 appears.
• Press and release the Advance (Front) button, the Units
screen appears with the set point flashing.
• Press the Advance (Front) button 10 more times.
• The graphics PO2 and MAX, and Alarm icon appear
with the PO2 value flashing (Fig. 35).
• Press and release the Select (Side) button to advance
the Alarm value in increments of .10 (ATA).
• Press the Advance (Front) button to accept the setting
and advance to Set FO2 50% Default, or press and hold
Both buttons for 2 seconds to revert to Surface Mode.
Fig. 35 - Set Max PO2 Alarm
38
TO SET - FO2 50% DEFAULT (while in the Surface Mode)
Factory set ON, the FO2 50% Default feature can be set to
OFF. The effects of this feature being ON or OFF are
described on page 18.
• Press Both buttons simultaneously, release when SET:
2 appears.
• Press and release the Advance (Front) button, the Units
screen appears with the set point flashing.
• Press the Advance (Front) button 11 more times.
• The graphics FO2 and 50 appear with the ON (or OFF)
flashing (Fig. 36).
• Press the Select (Side) button to toggle between ON
and OFF.
• Press the Advance (Front) button to accept the setting
and advance to Set Units of Measure, or press and hold
Both buttons for 2 seconds to revert to Surface Mode.
Fig. 36 - Set FO2 50% Default
39
TO SET - BACKLIGHT DURATION
(while in the Surface Mode)
Factory set for 7 (seconds), the Backlight Duration can be
set to values of 0, 3, or 7 (seconds).
• Press Both buttons simultaneously, release when SET:
2 appears.
• Press and release the Advance (Front) button, the Units
screen appears with the set point flashing.
• Press the Advance (Front) button 12 more times.
• The graphic GLO and Time icon appear with the Duration value flashing (Fig. 37).
• Press and release the Select (Side) button to advance
the Duration from :00 to :03 to :07 (seconds)
• Press the Advance (Front) button to accept the setting
and advance to Set Sampling Rate, or press and hold
Both buttons for 2 seconds to revert to Surface Mode.
Fig. 37 - Set Backlight Duration
40
TO SET - SAMPLING RATE
(while in the Surface Mode)
Factory set for 30 sec., the Sampling Rate can be set to
values of 2, 15, 30, or 60 sec., or 2, 5, 10 ft (.5, 1.5, 3 m).
Sampling Rate is the interval at which data samples are
recorded during a dive for subsequent download to the PC
program. This setting has no effect on displayed data or
data in the unit's Log.
• Press Both buttons, release when SET: 2 appears.
• Press and release the Advance (Front) button, the Units
screen appears with the set point flashing.
• Press the Advance (Front) button 13 more times.
• The graphic SR and SECS (or FEET) appear with the
Sampling Rate value flashing (Fig. 38).
• Press and release the Select (Side) button to advance
the Rate one selection at a time.
• Press the Advance (Front) button to accept the setting
and advance to Set Digital Gauge Mode, or press and
hold Both buttons for 2 seconds to revert to Surface
Mode.
Fig. 38 - Set Sampling Rate
41
TO SET - USER SET DIGITAL GAUGE MODE
(while in the Surface Mode)
Factory set OFF, User Set Digital Gauge Mode can also be
set ON. This feature is also described on page 66.
NOTE: Once a dive is made with this feature
set ON, the setting will be locked ON for 24
hours after the dive. Set Digital Gauge Mode
will not appear as a selection for 24 hours
after the dive.
• Press Both buttons, release when SET: 2 appears.
• Press and release the Advance (Front) button, the Units
screen appears with the set point flashing.
• Press the Advance (Front) button 14 more times.
• The graphic GAU appears with OFF (Fig. 39) flashing .
• Press and release the Select (Side) button to toggle
between ON and OFF.
Fig. 39 - User Set Gauge Mode
42
• Press the Advance (Front) button to accept the setting
and advance to Set Plan Mode, or press and hold Both
buttons for 2 seconds to revert to Surface Mode.
TO SET - WATER ACTIVATION
(while in the Surface Mode)
Factory set ON, this feature can also be set OFF. When
set ON, the XP 5 will automatically Activate and enter Dive
Mode upon immersion in water and descent to 5 ft (1.5 m).
WARNING: If the Water Activation feature is set
OFF, the XP 5 must be manually (push button)
activated prior to commencing a dive.
• Press Both buttons and release when SET: 2 appears.
• Press and release the Advance (Front) button, the Units
screen appears with the set point flashing.
• Press the Advance (Front) button 15 more times (14
more times if the Digital Gauge Mode was set ON).
• The graphics ACT and H2O appear with ON (or OFF)
flashing (Fig. 40).
• Press and release the Select (Side) button to toggle
between ON and OFF.
• Press the Advance (Front) button to accept the setting
and revert to Surface Mode.
Fig. 40 - Set Water Activation
43
WARNINGS AND SAFETY RECOMMENDATIONS
• There are few legitimate excuses for making unplanned Decompression dives, and
the consequences of this type of diving can be severe. By making an unplanned Decompression dive without the necessary preparation and training, you will have
placed yourself in an unnecessarily dangerous situation. Allow a surface interval of
at least 24 hours before reentering the water in the event a dive requires emergency
decompression.
• By entering decompression, you automatically impose a “ceiling” above you which
you cannot immediately ascend beyond, denying you free access to the surface.
• Exiting the water with the Nitrogen Bar Graph in the red decompression zone greatly
increases the risk of decompression sickness, and may result in injury or death.
• Existing data for making planned decompression dives is extremely limited, and virtually nonexistent for repetitive decompression diving. Decompression diving greatly
increases your risk of decompression sickness.
• Special training, equipment, and support are necessary for planned decompression
diving and diving deeper than the maximum recommended sport diving limit(s).
• Decompression diving will greatly increase your risk of decompression sickness.
• If your XP 5 stops working for any reason, it is important that you have
anticipated this possibility and are prepared for it. This is an important
reason for not pushing the no decompression and oxygen accumulation
limits, and a critical reason to avoid entering decompression.
• If you dive in situations where your trip would be ruined or your safety would be
jeopardized by losing the use of your XP 5, an analog or digital backup instrument system and use of standard air (or nitrox) tables is highly
recommended.
44
PRE DIVE PLAN MODE
45
DIVE PLANNER
WARNING: The available dive times provided by the Dive Planner are
only predictions. Depending on cylinder size, breathing gas consumption, and oxygen accumulation you may have less time available than
indicated because of breathing gas quantity or other limitations.
Depth
feet (meters)
30 (9)
40 (12)
50 (15)
60 (18)
70 (21)
80 (24)
90 (27)
100 (30)
110 (33)
120 (36)
130 (39)
140 (42)
150 (45)
160 (48)
170 (48)
180 (48)
190 (48)
NDL
hours:mins
4:20 (4:43)
2:17 (2:24)
1:21 (1:25)
:57 (:59)
:40 (:41)
:30 (:32)
:24 (:25)
:19 (:20)
:16 (:17)
:13 (:14)
:11 (:11)
:09 (:09)
:08 (:08)
:07 (:07)
:07 (:06)
:06 (:06)
:05 (:05)
No Decompression Limits
(no dive made yet)
46
The Dive Planner should be reviewed prior to every dive to
help you plan your dive as required to avoid exceeding no
decompression or oxygen exposure limits. For repetitive
dives, the Planner indicates adjusted dive times that are
available for the next dive, based on residual nitrogen or
oxygen accumulation (whichever is in control) following the
last dive and surface interval.
To access the Dive Planner (while in Surface Mode) • Press the Advance (Front ) button 1 time.
• Press and release the Select (Side) button to advance
through the depths/times available one screen at a time.
• Press the Advance (Front) button to access Fly Mode.
• The unit will revert to Surface Mode after 2 minutes if no
button is pressed.
The Dive Planner provides a sequence of theoretical dive
times available for depths ranging from 30 feet (9 meters)
to 190 feet (57 meters) in 10 foot (3 meter) increments.
No decompression times are only displayed for depths
where there is at least 3 minutes of theoretical dive time
available at the depth, taking into account a descent rate of
120 feet (36 meters) per minute. Depths greater than the
maximum depth that can be achieved with a PO2 of 1.60
ATA will not be displayed.
With each depth displayed by the Dive Planner, you will see
either predicted no decompression limits (NDLs) based
upon your previous dive profiles (if calculated to be
nitrogen controlled), or predicted oxygen tolerance limits
(OTLs) based upon either a single dive exposure or your
24 hour accumulation of oxygen.
Fig. 41 - Nitrogen Control
If the Nitrogen Bar Graph is displayed (Fig. 41), that next
dive is calculated to be controlled by nitrogen loading. If
the O2 Bar Graph and O2 symbol are displayed (Fig. 42), it
is calculated to be controlled by oxygen loading.
NOTE: The XP 5 will store oxygen accumulation
calculations for up to 10 dives conducted during a 24 hour period. If the maximum limit for
oxygen loading has been exceeded for that
day (24 hour period), all of the segments of the
O2 bar graph will be displayed flashing .
Depth/Time values will not appear until the O2
bar graph recedes into the green zone.
Fig. 42 - Oxygen Control
47
WARNINGS AND SAFETY RECOMMENDATIONS
• The percentage of oxygen (FO2) in the nitrox mix being used must be 'set before
each nitrox dive', unless the FO2 50% Default feature is set OFF (a user setting).
• The Dive Planner provides predicted times for subsequent dives. Depending on cylinder size, breathing gas consumption, and oxygen accumulation, you may have less
time available than indicated because of breathing gas quantity or other limitations.
• Until it has shut itself off, you must not use the XP 5 at a different altitude
than the altitude at which it was activated. Doing so will result in an error
equal to the difference in barometric pressure, and possibly a false dive
mode with erroneous data.
•
To provide proper altitude compensation, the XP 5 must manually
activated at the new altitude. Dive computers, such as the XP 5cannot
sense changes in barometric pressure if activated by immersion in water
at higher altitudes.
• Use the Yellow Caution Zone of the Nitrogen Bar Graph as a visual reference to provide a greater margin of protection between you and the No Decompression Limits.
• Every effort should be made to keep each of the Bar Graphs in the green throughout
your dives to reduce your risk of exposure to decompression sickness, oxygen toxicity, and the effects of excessive ascent rates.
48
WARNINGS:
Making decompression dives without the proper preparation and training will place you in an unnecessarily dangerous situation.
Existing data for making planned decompression dives is extremely limited, and virtually non-existent for repetitive decompression diving.
Decompression diving greatly increases your risk of decompression
sickness.
Special training, equipment, and support are necessary for diving
deeper than the maximum recommended sport diving depth limit(s).
DIVE MODES
49
DIVE MODE BAR GRAPHS
As your depth and elapsed dive time increase, the Nitrogen Bar Graph (Fig. 43a) will
fill with segments (green toward red) to represent the absorption of nitrogen.
While ascending to shallower depths, the segments that have filled the Nitrogen Bar
Graph will begin to recede, offering a graphic representation of your multilevel diving
capability. If FO2 was set for a numerical value (nitrox), the O2 Bar Graph (Fig. 43b)
will fill with segments (green toward red) to represent oxygen accumulation for that
dive or 24 hour period, whichever amount is greater.
The Variable Ascent Rate Indicator (Fig. 43c) shows how fast you are ascending.
When you exceed the maximum recommended ascent rate for the depth you are at, it
will enter the red (Too Fast) zone and you will be alerted by all segments of the bar
graph flashing, and an Audible alarm (unless set OFF). The warnings will stop when
your ascent rate is slowed.
CONTROL OF DISPLAYS
c
a
b
Fig. 43 - Bar Graphs
50
During No Decompression conditions, various displays of
information (up to 4) are available. Each provides Depth,
Dive Time Remaining, and additional information. The intent
of this feature is to provide the diver control of how much
information is on display at any given time during the dive.
The diver can change from one display to another as often
as desired by pressing the Advance (Front) button, otherwise it does not change.
During conditions in which cautionary type information is
displayed (e.g., Decompression, High PO2, etc.), there is a
Main Display of important information relevant to the
specific condition. The diver can access another display,
but it will revert to the Main Display after 3 seconds.
NO DECOMPRESSION DIVE MODE
The XP 5 will enter the No Decompression Dive Mode when
you descend deeper than 4 feet (1.2 meters).
Fig. 44 - No Deco #1
No Decompression Dive Mode - Display #1 (Fig. 44)
Information includes Current Depth, Dive Time Remaining,
Maximum Depth, Elapsed Dive Time, and the bar graphs.
• press and release the Advance (Front) button to view
Display #2.
No Decompression Dive Mode - Display #2 (Fig. 45)
Information includes Current Depth, Dive Time Remaining,
Temperature, Time of Day, and the applicable bar graphs.
• press and release the Advance (Front) button to view
Display #3 (FO2 - Nitrox), or Display #1.
Fig. 45 - No Deco #2
51
No Decompression Dive Mode - Display #3 (Fig. 46)
Information includes - Current Depth, Dive Time Remaining
(and Mode icon), current value of PO2 (if a nitrox dive), and
applicable bar graphs.
• press the Advance (Front) button to view Display #1.
No Decompression Dive Mode - SAFETY STOP
Fig. 46 - Safety Stop
Upon ascending to 20 feet (6 meters) on any No Decompression dive in which depth exceeded 30 feet (9 meters),
a short beep will be emitted and a Safety Stop at 15 feet
(4.5 meters) will appear on the display with a 3 minute
countdown timer that counts down from 3:00 to :00
(min:sec) (Fig. 46).
Information includes Current Depth, Stop Depth (15 feet or
4.5 meters), Stop Bar icon, Countdown Timer, Dive Time
Remaining, Cylinder Pressure, and applicable bar graphs.
The Safety Stop will be displayed until the countdown times
out, or you descend below 30 feet (10 meters), or you
surface. There is no Penalty if you surface prior to completing the Safety Stop.
52
DECOMPRESSION DIVE MODE
The XP 5 is designed to help you by providing a representation of how close you are to entering decompression. Decompression Dive Mode activates when theoretical No
Decompression time/depth limits are exceeded.
Entry into Decompression Dive Mode (Fig. 47)
Upon entering Decompression Mode, the Audible Alarm will
sound for 30 seconds, or until acknowledged.
At that time, you should begin a safe controlled ascent to a
depth slightly deeper than, or equal to, the Required Ceiling
Stop Depth indicated (Fig. 47a) and decompress for the
Stop Time indicated (Fig. 47b).
• The UP Arrow and Deco Bar will flash if you are greater
than 10ft (3m) deeper than the Ceiling Stop Depth.
• While within 10ft (3m) of, and below, the Stop Depth,
both Arrows and the Bar appear solid.
Other information includes:
• Current Depth (Fig. 47c).
• Total Ascent Time (Fig. 47d) - which includes Stop
Times required at all ceilings and vertical Ascent Time
calculated at 60 ft (18 m) per minute for depths deeper
than 60 ft (18 m), and 30 ft (9 m) per minute for depths of
60 ft (18 m) and shallower.
c
b
a
d
Fig. 47 -Entry into DECO
53
Managing Decompression Stops
a
The amount of decompression credit time that you receive
is dependent on depth, with slightly less credit given the
deeper you are. You should stay slightly deeper (Fig. 48a)
than the Required Stop Depth indicated (Fig. 48b) until the
next shallower Stop Depth appears. Then, you can slowly
ascend to, but not shallower than that Ceiling Stop Depth.
b
Fig. 48 -Deco #1 (Main)
Decompression Dive Mode - Main Display #1 (Fig. 48)
Information - Current Depth, required decompression Stop
Depth and Time, Total Ascent Time, both Arrows and the
Deco Bar, and the applicable bar graphs.
• press and hold the Advance (Front) button for 2
seconds to acknowledge and silence the Audible Alarm.
• press and release the Advance (Front) button to view
Display #2.
Decompression Dive Mode - Display #2 (Fig. 49)
Information - Current Depth, Total Ascent Time, Maximum
Depth for that dive, Elapsed Dive Time, and the bar graphs.
Fig. 49 -Deco #2
54
• press and release the Advance (Front) button to view
Display #3.
Decompression Dive Mode - Display #3 (Fig. 50)
This display is only available during nitrox dives.
Information includes - Current Depth, Total Ascent Time,
the letters PO2 and current value of PO2, and applicable
bar graphs.
• press the Advance (Front) button to view Display #1.
NOTE: While in Decompression Mode, the XP 5
will automatically revert to the Main Display
after 3 seconds unless the Advance (Front)
button is pressed to view another display of
information.
WARNING: If you exceed certain limits, the XP 5
will not be able to tell you how to get safely
back to the surface. These situations exceed
tested limits and can result in loss of some XP
5 functions for 24 hours after the dive in which
a Violation occurred.
Fig. 50 -Deco #3
55
VIOLATION MODES
Violation Modes that the XP 5 can enter are termed - Conditional, Delayed, and Immediate. Permanent Violation Mode
and Gauge Mode are continuations of these.
WARNING: It is important to understand each
different Violation Mode and how to carry out
emergency procedures in the event that you
enter one.
NOTE: Upon entry into certain Violation Modes,
the Audible Alarm will emit a 30 second continuous tone followed by a 5 second steady
beep. The Alarm will sound even if it is user
Set OFF. It also cannot be turned off by pressing the Advance (Front) button.
While in Violation Modes, the Alternate Displays previously
described can be accessed using the Advance (Front)
button.
Responsible
56
NOTE: While in Violation Modes, the XP 5 will
automatically revert to the Main Display after 3
seconds unless the Advance (Front) button is
pressed to view another display of information.
Conditional Violation Mode
The XP 5 will enter the Conditional Violation Mode if you ascend to a depth
shallower (Fig. 51a) than the Required Decompression Ceiling Stop Depth displayed (Fig. 51b).
• Unless set OFF (a user setting), the Audible Alarm will emit a continuous tone for 30
seconds or until acknowledged by pressing the Advance (Front) button.
• The Down Arrow, Deco Bar, and the Total Ascent Time display will flash until you
descend below the Required Stop Depth.
• Also displayed will be Current Depth and applicable bar graphs.
If you descend below the required decompression ceiling before 5 minutes have
elapsed, the ATMOS 2 will continue to function in Decompression Dive Mode. In this
case, no off-gassing credit will be given, and for each
a
minute above the ceiling 11/2 minutes of Penalty Time will be
added to Required Stop Time.
The added Penalty (decompression) Time will have to be
'worked off' first, before obtaining off-gassing credit. Once
the Penalty Time is worked-off, and off-gassing credit
begins, required decompression Stop Depths and Time will
decrease toward zero, then the Nitrogen Bar Graph will recede into the yellow Caution Zone and the XP 5 will revert to
the No Decompression Dive Mode.
b
Fig. 51 - Conditional Violation
57
Flashing
NOTE: Upon entry into Delayed Violation
Modes, the Audible Alarm will sound, even if it
is user Set OFF. It cannot be turned off by
pressing the Advance (Front) button.
Delayed Violation Mode #1 (Fig. 52)
Flashing
Fig. 52 - Delayed Violation #1
If you remain above the Required Ceiling Stop Depth
for 'more than 5 minutes', the Nitrogen Bar Graph and
Total Ascent Time display will flash until you descend below the Required Stop Depth. This is a continuation of a
Conditional Violation.
Delayed Violation Mode #2 (Fig. 53)
Flashing
Fig. 53 - Delayed Violation #2
58
The XP 5 cannot calculate decompression times for Stop
Depths much greater than 60 feet (18 meters) and offers
no indication of how much dive time would result in the
need for a greater Stop Depth.
If your Decompression obligation requires a Ceiling
Stop Depth 'between' 60 feet (18 meters) and 70
feet (21 meters), the Nitrogen Bar Graph will flash.
You must ascend to just deeper than, and stay as close as
possible to, 60 feet (18 meters) without causing the Total
Ascent Time display to flash. When the Required Stop
Depth indicates 50 FT/ 15 M, etc., you can ascend to those
depths and continue decompressing.
Delayed Violation Mode #3 (Fig. 54)
If you descend deeper than 330 feet (99.5 meters),
the Nitrogen Bar Graph will flash, and the Current Depth
and Max Depth displays will only indicate 3 dashes ( - - -).
Upon ascending above 330 feet (99.5 meters), the Current
Depth display will be restored, however Max Depth will
only display 3 dashes for the remainder of that dive. The
Log for that dive will also only indicate 3 dashes as the Max
Depth achieved.
Immediate Violation Mode and Gauge Mode
WARNING: The XP 5 enters Immediate Violation
Mode when a situation totally exceeds its capacity to predict an ascent procedure. These
dives represent gross excursions into decompression that are beyond the boundaries and
spirit of the XP 5 design, and an XP 5 should
not be used for the dives.
During a Dive, if a ceiling much greater than 60FT (18M) is
required, an Immediate Violation Mode will be entered.
This situation would be preceded by entering Delayed Violation Mode #2, previously described. The ATMOS 2 would
then operate with limited functions in Gauge Mode during
the remainder of that dive and for 24 hours after surfacing.
Flashing
Fig. 54 - Delayed Violation #3
59
Gauge Mode turns the XP 5 into a digital instrument without any decompression or oxygen monitoring functions.
Only Current Depth, Max Depth, Elapsed Dive Time, and the
Ascent Rate Indicator will be displayed (Fig. 55). The Nitrogen Bar Graph and O2 Bar Graph will flash as a warning of
this condition.
Flashing
Fig. 55 - Immediate Violation
Gauge Mode (underwater)
Flashing
Fig. 56 - Immediate Violation
Gauge Mode (after surfacing)
60
• To view Temperature and Time of Day - press the
Advance (Front) button.
• To activate the Backlight - press the Select (Side) button.
The XP 5 will also enter an Immediate Violation Mode 5
minutes after reaching the surface from a dive in which a
Delayed Violation occurred. On the surface, Gauge Mode
displays the Dive Number, Surface Interval, Temperature,
and Time of Day with the full Nitrogen and O2 Bar Graphs
flashing (Fig. 56). It does not provide the FO2, Dive Planner, or Time to Fly and Desaturate features. The countdown timer that appears when you try to access Time to
Fly does not represent 'Time to Fly'. It is only provided to inform you of the time remaining before normal XP 5 operation
can resume with full features and functions.
This condition is considered a Permanent Violation,
and in the event that a dive is made during the 24
hour period, a full 24 hour surface interval must
then be served before all functions are restored.
HIGH PO2 DIVE MODE
As depth increases during a dive, the partial pressure of
oxygen (PO2) increases. When PO2 becomes equal to, or
greater than, 1.40 ATA, or 0.2 ATA less than the PO2
Alarm set point (a user setting); the Audible Alarm will
sound (unless set OFF), and the current PO2 value, PO2
symbol, O2 segment of the O2 Bar Graph, and UP Arrow
will appear on the Main Display as a warning until PO2 decreases. Current Depth and Dive Time Remaining will also
be displayed (Fig. 57).
If PO2 continues to increase, the value displayed will increase toward a maximum value of 5.00 ATA in increments
of .01 ATA. When it reaches a value of 1.60 ATA, or the
PO2 Alarm set point (a user setting), the Audible Alarm
will sound (unless set OFF) and the current PO2 value,
PO2 symbol, O2 segment of the O2 Bar Graph, and UP
Arrow will flash until PO2 decreases (Fig. 58).
WARNING: In the event that you enter High PO2
Dive Mode, you must immediately focus on reducing the partial pressure of oxygen by
slowly ascending to a shallower depth at a
safe rate in accordance with your nitrox
training. If you continue the dive at your
current depth, or descend deeper, your exposure to CNS oxygen toxicity will increase.
Fig. 57 - PO2 Warning
Fig. 58 - PO2 Alarm
61
While in High PO2 Mode, the Alternate Displays previously described can be accessed
using the Advance (Front) button, and the Backlight can be activated using the Select
(Side) button.
NOTE: While in High PO2 Mode, the XP 5 will automatically revert to
the Main Display after 3 seconds unless the Advance (Front) button is
pressed to view another display of information.
HIGH OXYGEN ACCUMULATION
It is important that you understand that conducting repetitive dives using
enriched nitrogen-oxygen mixtures can lead to oxygen buildup, reducing
oxygen tolerance while increasing the risk of pulmonary oxygen toxicity.
SEEMANN strongly recommends that you avoid exceeding oxygen exposure
limits, and reminds you that nitrox diving requires special training and
understanding of the effects of oxygen toxicity.
The O2 Bar Graph provides a graphic representation of your oxygen accumulation,
displaying either oxygen accumulated during that dive, or during the repetitive dives
you conduct during that 24 hour period, whichever of the two is greater at that time.
The yellow Caution Zone of the O2 Bar Graph offers you a convenient way to consistently monitor how close you are coming to the limits of oxygen exposure. Use it
as a visual reference to place a wider margin of protection between you and
the Limits.
62
If the theoretical amount of oxygen accumulated equals, or exceeds, the limit for a
single exposure, or the exposure limit for a 24 hour period, Oxygen Dive Time Remaining becomes zero (0:00) and the O2 Bar Graph will enter the red O2 Zone (Fig. 59).
The Audible Alarm will sound (unless set OFF) and the UP Arrow and the full O2 Bar
Graph will flash as a warning until the level of oxygen decreases below the limit.
You must immediately focus on making a safe controlled ascent to the surface to prevent further exposure. As your accumulation (dose) decreases during
your surface interval, the O2 bar graph will gradually recede into the yellow (caution)
zone and green (normal) zone.
WARNING: In the event that you exceed the maximum per dive
allowable oxygen exposure (dose), it is recommended that you allow a
surface interval of at least 2 hours before reentering the water. If you
exceed the maximum 24 hour period allowable oxygen exposure
(dose), you must allow a surface interval of at
least 24 hours before reentering the water.
While in High O2 Mode, the Alternate Displays previously described can be accessed using the Advance (Front) button,
and the Backlight can be activated using the Select (Side)
button.
NOTE: While in High O2 Mode, the XP 5 will automatically revert to the Main Display after 3
seconds unless the Advance (Front) button is
pressed to view another display of information.
Blinkend
Fig. 59 - High O2 Warning
63
USER SET DIGITAL GAUGE MODE
(also refer to page 42)
When Digital Gauge Mode is set for ON, the XP 5 will operate as a digital Depth Gauge/Timer without performing
nitrogen and oxygen calculations.
While in this mode, the range of the Current and Max Depth
displays are extended to 399 feet (120 meters) to
accommodate activities involving diving with advanced
breathing gas mixtures or free diving beyond the normal
depth limit of the unit.
Information displayed includes Current Depth, Elapsed Dive
Time, Maximum Depth, and Time of Day.
NOTE: Once a dive is made with this feature
set ON, the setting will be locked ON for 24
hours after the dive. Set Digital Gauge Mode
will not appear as a selection for 24 hours
after the dive.
Fig. 60 - User Set Gauge Mode
64
POST DIVE MODES
65
POST DIVE SURFACE MODE
When you ascend to 3 feet (1 meter) or shallower, the XP
5 will enter Surface Mode and begin counting your surface
interval.
TRANSITION PERIOD
The first 10 minutes is, in affect, a Transition Period during
which time the following information is displayed (Fig. 61):
• 'Number' of that dive (during that day)
• Battery Consumption Indicator
• Surface Interval time (colon flashing) and icon (flashing)
• Temperature (ambient)
• Time of Day and icon
• Nitrogen Bar Graph indicating current nitrogen loading
• O2 Bar Graph indicating current oxygen accumulation (if
nitrox dive)
During the Transition Period, Log Mode can be accessed.
No other modes (e.g., Plan, Fly, Desat, Set, PC, Sim) are
accessible.
To activate the Backlight press the Select (Side) button.
Fig. 61 - Transition Period
66
To view that dive's Log (Fig. 62) Refer to page 70 for a description of the Log Mode and
displays.
• press the Advance (Front) button 1 time
• press the Select (Side) button 1 time to view the
Nitrogen data screen
• press the Select (Side) button again to view the
Oxygen data screen (if a nitrox dive)
• press Both buttons simultaneously for 2 seconds to
return to Surface Mode
• the unit will revert to Surface Mode after 2 minutes if no
button is pressed
Log Data will not be stored in the unit's memory until the 10
minute Transition Period on the surface is completed.
Once 10 minutes have elapsed, the Surface Mode icon and
Surface Interval time display colon stop flashing indicating
that the Dive and Transition Period are completed, and a
subsequent descent will be considered a new dive.
If you descend during the 10 minute Transition Period, time
underwater will be considered a continuation of that dive.
The time at the surface (if less than 10 minutes) will not be
added as Dive Time.
Fig. 62 - Log Mode
67
AFTER THE TRANSITION PERIOD (THE FIRST 2 HOURS)
For the remainder of the first 2 hours after surfacing,
information will continue to be displayed as Surface Mode
(Fig. 63) and you will have full access to other modes
(e.g., Plan, Fly, Desat, Log, Set, PC, Sim).
To access the Dive Planner (Plan Mode) - (page 48)
Fig. 63 - Surface Mode
• press the Advance (Front) button 1 time (while in
Surface Mode)
• press and release the Select (Side) button to advance
through the sequence of available 'adjusted' depths/
times one screen at a time.
• The unit will revert to Surface Mode after 2 minutes,
unless the Advance (Front) button is pressed to access
the Fly Mode.
The Dive Planner now shows 'adjusted' No Decompression
Limits (Fig. 64) based on residual nitrogen and accumulated
oxygen calculated to be remaining from the previous dives.
Fig. 64 - Plan Mode
68
NOTE: The Planning Sequence will only
advance to the maximum depth allowed by the
nitrogen or oxygen limit, whichever is in
control. The respective bar graph will be displayed to indicate which is in control.
To access the Time to Fly Countdown • press the Advance (Front) button 2 times (while in Surface Mode)
• The unit will revert to Surface Mode after 2 minutes, unless the Advance (Front)
button is pressed to access the Desat Time Countdown.
• If a violation occurred during the dive a single dash ( - ) will appear instead of the
graphic FLY.
The Time to Fly counter (Fig. 65) is provided to assist you with deciding when enough
surface time has elapsed to fly (or travel to higher elevations). It begins counting
down 10 minutes after surfacing from a dive (after the Transition Period) displaying the
graphic FLY and a countdown that begins at 23:50 (hr:min) and counts down to 0:00
(hr:min).
Two hours after the last dive, the Time to Fly and Desaturation countdowns will be displayed alternately for 3 seconds each until they count down to 0:00 or another dive is
made. Access to other modes is gained by pressing Either button to return to Surface
Mode.
After a surface interval of 12 hours, you may choose
to fly (or travel to higher elevations), provided that
your dive profile(s) did not enter decompression. If
your diving involved decompression or a repetitive,
multi day profile, it is strongly recommended that you
wait a full 24 hours after your last dive to add a
greater degree of protection.
As you should be aware from your own training, the
longer you wait to fly (or travel to higher elevations)
after diving, the more you will reduce your exposure
Fig. 65 - Time to Fly
to decompression sickness.
69
To access the Time to Desaturate Countdown • press the Advance (Front) button 3 times (while in Surface Mode)
• The countdown starts 10 minutes after surfacing at 23:50 (hr:min) maximum and
counts down to 0:00 (hr:min). The Time to Desaturate Countdown displays the
graphic SAT and a counter (Fig. 66) that provides calculated time for tissue
desaturation (release of nitrogen loading) at sea level.
• If a violation occurred during the dive, Desaturation Time will not be displayed.
• The unit will revert to Surface Mode after 2 minutes, unless the Advance (Front)
button is pressed to access the Log Mode.
• Two hours after the last dive, the Time to Fly and Desaturation countdowns will be
displayed alternately for 3 seconds each until they count down to 0:00 or another
dive is made. Access to other modes is gained by to return to Surface Mode.
LOG MODE
Fig. 66 - Time to Desaturate
70
Information from your latest 24 dives is stored in the Log
for viewing. The first dive of a new day (after midnight)
will be #1, then #2, etc. After 24 dives are accumulated,
each subsequent dive will overwrite the oldest dive in the
Log (i.e., the most recent dive deletes the oldest). Log information will not be lost when the battery is removed.
Dives are displayed in a reverse sequence that starts with
the dive most recently recorded back to the oldest of the
24 dives stored. Thus, your most recent dive will always
be the first shown in the sequence. Log screens are Date/
Time started, Nitrogen and Oxygen data.
Button Control in Log Mode • The Advance (Front) button is used to access a specific
dive's Log.
• The Select (Side) button is used to view the second and
third screens (Nitrogen and Oxygen related data) for that
dive.
• To return to Surface Mode at any time while in Log
Mode, press Both buttons simultaneously for 2 seconds.
• The unit will automatically revert to Surface Mode after 2
minutes if no button is pressed while in the Log Mode.
HINT: To bypass a dive's Log and search for another
in the sequence, press the Advance button repeatedly. Do not press the Select button until you find
the dive Log you wish to view. Dives are identified
by the Date/Time started and 'number' for that day.
To access the Log Mode and view the First Screen
(Fig. 67) • press the Advance (Front) button 4 times (while in
Surface Mode)
• the first screen of the most recent dive will appear displaying • the Log Mode icon
• Dive Number
• Date/Time of Day that the dive started
Fig. 67 - Log (1st screen)
71
Fig. 68 - Log (2nd screen)
Fig. 69 - Log (3rd screen)
72
To view the Second Screen of the Log (Nitrogen
data) (Fig. 68) • press the Select (Side) button 1 time.
Displayed will be • Log Mode icon
• Maximum Depth - reached during the dive (and graphic)
• Elapsed Dive Time (and icon)
• Temperature - minimum during that dive (and icon)
• Surface Interval - prior to that dive (and icon)
• Variable Ascent Rate Indicator - showing the maximum
ascent rate maintained for 4 consecutive seconds
during the dive.
• Nitrogen Bar Graph - showing tissue nitrogen loading at
the time you surfaced at the end of the dive. Also, the
segment that reflects the maximum loading will appear
flashing.
To view the Third Screen of the Log (Oxygen data)
(Fig. 69) • press the Select (Side) button 1 time.
Displayed will be • Log Mode icon and FO2 graphic
• FO2 value - set for that dive
• Maximum PO2 level - reached during that dive (and PO2
graph)
• O2 Bar Graph - showing oxygen loading at the end of
the dive.
AFTER THE FIRST 2 HOURS
Two hours after the last dive Surface Mode will no longer
be displayed, the Time to Fly and Desaturation countdowns
will be displayed alternately for 3 seconds each until they
count down to 0:00 or another dive is made.
To access other modes or enter settings • press Either button to return to Surface Mode.
• the unit will again revert to the Time to Fly and
Desaturation countdowns after 2 hours, if no button is
pressed.
Wet Contacts
If the graphic H2O appears during the Fly Mode (Fig. 70)
and Desaturation Mode (Fig. 71) countdowns, it is an indication that the water activation contacts are bridged (still
wet) and the unit must be rinsed in fresh water and dried.
• Once the unit is dry, the graphic H2O will disappear.
• If the unit is not cleaned and dried prior to the countdowns reaching 0:00 (hr:min), or making another dive, it
will shut off then automatically reactivate.
• The graphic H2O would then appear in place of Dive
Number during the Surface Mode.
• If no dive is made, the unit would shut off after 2 hours,
then automatically reactivate again, repeating the action
until cleaned and dried.
Fig. 70 - Fly Mode
(Activation Contacts Wet)
Fig. 71 - Desaturation Mode
(Activation Contacts Wet)
73
DOWNLOADING DATA TO A PC
Using special linking hardware dive data can be downloaded (copied) from your XP 5 to an IBM compatible PC
program running on a Windows® operating system.
Compatibility requirements and instructions are provided
with the optional download package that is available from
your Authorized SEEMANN Dealer.
NOTE: Ensure that the download product that
you acquire is compatible with the XP 5 and the
PC equipment that you will be using.
The software program provides tabular and graphic profile
data sampled throughout the dives. The Interface Cable will
be connected to the Data Port located on the side of the XP
5 housing.
Prior to attempting to download data from your XP 5,
refer to the instructions provided in the User
Manual that is incorporated into the CD for the
download hardware/software package.
Fig. 72 - PC Interface
74
Refer to page 30 of this manual for instructions
regarding access to PC Interface (Fig. 72).
SIMULATOR (DEMO) MODE
75
SIMULATOR MODE
This mode provides you with the ability to practice various
dive mode scenarios and computer functions while
observing the various displays.
Fig. 73 - Simulator Mode
• At any time while in Simulator Mode, pressing and holding both buttons simultaneously for 2 seconds shall
revert operation to real Surface Mode.
• The set points entered into the XP 5 do not affect the
operation of the Simulator which has its own settings
that allow Digital Gauge Mode to be set ON or OFF, calculations to be cleared, and FO2 to be set.
Access and Setup (while in Surface Mode)
• Press and hold Both buttons for 6 seconds.
• Release the buttons during the 2 second window when
the SIM graphic appears (Fig. 73).
• Press and release the Advance (Front) button to
access Simulator Mode. The graphics DEMO and GAUG
will appear with OFF (or ON) flashing (Fig. 74).
Fig. 74 - Set Demo Gauge
76
When Gauge is set ON, the Simulator will operate as the
unit would in normal User Set Digital Gauge Mode, only displaying Depth, Max Depth, Elapsed Dive Time, and Time of
Day. When set OFF, it operates as it would as an Air or
Nitrox computer.
• Press and release the Select (Side) button to toggle between ON and OFF.
• Press and release the Advance (Front) button to accept
the setting and advance to DEMO: NI-O2 with CUR (or
NEW) flashing (Fig. 75).
When set for NEW, calculations are based on zero residual nitrogen and oxygen loading (a clean dive). When
set for CUR, calculations take into consideration any
calculated residual nitrogen and oxygen remaining from
previous 'actual' dives. Subsequent (repetitive)
Simulated dives will not take into consideration data from
previous Simulated dives.
• Press and release the Select (Side) button to toggle between NEW and CUR.
• Press and release the Advance (Front) button to accept
the setting and advance to Demo Surface Mode with the
DEMO graphic flashing (Fig. 76).
• Press and release the Advance (Front) button to advance to DEMO: FO2 with Air (or a numerical value)
flashing (Fig. 77).
• Press and release the Select (Side) button to advance
the FO2 setting from AIR to 21 then to 50, in steps of 1%.
• Press and release the Advance (Front) button to accept
the setting and revert to Demo Surface Mode with the
DEMO icon flashing.
Fig. 75 - Set Demo Calibration
Fig. 76 - Demo Surface Mode
Fig. 77 - Set Demo FO2
77
Descending
• Press and hold the Select (Side) button for 2 seconds to
access Dive Mode. The DOWN Arrow will appear
flashing (Fig. 78).
• Press and release the Select (Side) button to begin a
Descent at a rate of 5 feet (1.5 m) per real time second.
• Press and release the Select (Side) button during the
Descent to stop the Descent.
Fig. 78 -Simulated Descent
• During the Descent, pressing and releasing the Advance
(Front) button provides access to the Alternate Displays.
• Press and hold the Select (Side) button for 4 seconds to
access Time Acceleration. The small clock icon will
begin flashing (Fig. 79).
• Press and release the Select (Side) button to increase
Elapsed Dive Time 1 minute per real time second.
• Press and release the Select (Side) button during Time
Acceleration will restore normal time rate of one second
per real second.
Fig. 79 -Time Acceleration
78
• To exit Simulator operation at this time, press and holding
Both buttons simultaneously for 2 seconds to revert
operation to real Surface Mode. To make a Simulated
Ascent, continue as follows.
Ascending
• Press and hold the Advance (Front) button for 2 seconds to access Ascent. The UP Arrow will appear
flashing (Fig. 80).
• Press and release the Advance (Front) button again to
begin an Ascent at a rate of 60 feet (18 meters) per
minute at depths deeper than 60 feet (18 meters), or a
rate of 30 feet (9 meters) per minute at depths of 60 feet
(18 meters) and shallower.
• Press and release the Advance (Front) button during the
Ascent to stop the Ascent.
• Alternate Displays cannot be accessed during Simulated
Ascent.
• Press and release the Advance (Front) button to accelerate the Ascent Rate to 180 feet (54 meters) per
minute (Fig. 81).
• Press and release the Advance (Front) button during the
Accelerated Ascent stops the Ascent, but does not restore normal Ascent Rate. Pressing and holding the button for 2 seconds will acknowledge and disable the
alarm, however the Accelerated rate will continue. To
slow the Ascent, press the Advance (Front) button
momentarily.
• To exit Simulator Mode, press and hold Both buttons simultaneously for 2 seconds to revert operation to real
Surface Mode.
Fig. 80 - Simulated Ascent
Fig. 81 - Ascent Accelerated
79
Simulated Post Dive Surface Mode
• The Simulator will enter Demo Surface Mode (Fig. 82)
upon ascending to 3 feet (1 meter) or shallower.
• Press and hold the Select (Side) button for 4 seconds to
access Time Acceleration. The small time clock icon
begins flashing.
• Press and release the Select (Side) button to increase
Surface Interval Time 1 minute per real time second.
• Press and release the Select (Side) button during the
Time Acceleration to restore the normal time rate of 1
second per real second.
• Press and release the Advance (Front) button to access
FO2 Set Mode. The FO2 graphic and value previously
set will appear with the value flashing.
• Press and release the Select (Side) button to increase
the FO2 value in increments of 1%.
• Press and release the Advance (Front) button to accept
the setting and return to Demo Surface Mode.
• Press and hold the Select (Side) button for 2 seconds
to access Dive Mode for a repetitive dive. The DOWN
Arrow will appear flashing.
• Pressing and holding Both buttons simultaneously for 2
seconds will revert operation to real Surface Mode.
Fig. 82 - Demo Surface Mode
80
WARNING: This function should be only used for rental
purposes in Diving Centers. The use of the Reset of the XP 5
for Recreational Diving in the private area is not
recommended.
RESET FUNCTION
81
WARNING:
Reset after a
dive and subsequent
use for a repetitive
dive conducted by
the same diver could
result in serious injury to or death.
RESET FEATURE
The XP 5 is configured with a RESET feature that allows
data to be cleared, including Nitrogen and Oxygen calculations, FO2 set point, Log Mode entries, and Download data.
RESET PROCESS
• While in SURFACE MODE (new activation period or
greater than a 10 minute post dive surface interval),
press the Advance button 1 time to access PLAN MODE.
• While 30 feet (9 meters) is displayed in the PLAN MODE,
press and hold Both buttons until SET 2 appears, then
release the buttons and press the Advance button.
• The Clear screen appears with the first 2 digits of the
Code flashing (Fig.).
Reset Function
82
If the correct Reset Code (01 01) is not displayed • Press and release the Side (Select) button to change the
first 2 digits to 01.
• Press and release the Front (Advance) button to display
the second 2 digits of the Code, flashing.
• Press and release the Side (Select) button to change the
second 2 digits to 01.
• Press and release the Front (Advance) button to
complete the RESET operation and turn the unit OFF.
CARE, MAINTENANCE, and SERVICE
83
CARE AND CLEANING
Protect your XP 5 from shock, excessive temperatures,
chemical attack, and tampering. Protect the lens against
scratches with a transparent Instrument Lens Protector.
Small scratches will naturally disappear underwater.
CAUTION: Never spray aerosols of any kind on,
or near, the instrument. The propellants may
chemically attack the plastic.
• Soak and rinse the XP 5 in fresh water at the end of
each day of diving, and check to ensure that the areas
around the low pressure (depth) sensor (Fig. 83), download interface port, and buttons are free of debris or
obstructions.
• To dissolve salt crystals, use lukewarm water or a
slightly acidic white vinegar/water bath.
• After removal from the bath, place the unit under gently
running water and towel dry before storing.
• Transport your unit cool, dry, and protected.
Fig. 83 -Depth Sensor
84
WARNING: Never force any object through any
slots or holes of the Housing. Doing so may
damage the depth sensor, possibly resulting
in erroneous depth and/or dive time remaining
displays.
WARNING: If a Low Battery Condition is indicated prior to a dive, DO NOT
attempt to dive with the XP 5 until the battery is replaced.
INSPECTIONS AND SERVICE
Your XP 5 should be inspected annually by an Authorized SEEMANN Dealer who
will perform a factory prescribed function check and inspection for damage or wear.
To keep the 2 year limited warranty in effect, this inspection must be completed one
year after purchase (+/- 30 days).
SEEMANN recommends that you continue to have this inspection performed every year
to ensure it is working properly.
The costs of annual inspections are not covered under the terms of the 2 year limited
warranty.
WARNING: If you are in doubt about the accuracy of your XP 5 depth
readings, DO NOT attempt to dive with it until it has been inspected by
SEEMANN Customer Service.
It is possible to damage the depth sensor of the XP 5 if it is not pressure tested
properly. Ensure that the Dealer adheres to the following warning.
WARNING: Ensure that the XP 5 is never pressure tested in an air environment. Doing so may damage the depth sensor, possibly resulting
in erroneous depth or time readings.
85
To Obtain Service
Take your XP 5 to an Authorized SEEMANN Dealer or send it to the nearest SEEMANN
Regional Distributor Facility.
To return your XP 5 to SEEMANN:
• Record all dive data in the Log and/or download the data in memory. All data will be
erased when it receives factory service.
• Package it using a protective cushioning material.
• Include a legible note stating specific reason for return, your name, address,
daytime phone number, serial number, and a copy of your original sales receipt and
Warranty Registration Card.
• Send freight prepaid and insured using a traceable method to the nearest SEEMANN
Regional Service Facility, or to SEEMANN.
• Non-warranty service must also be prepaid. COD is not accepted.
• If you have any questions regarding service, contact the SEEMANN Customer
Service under E-mail info@seemannsub.de.
BATTERY REPLACEMENT
The battery compartment should only be opened in a dry and clean environment with
extreme care taken to prevent the entrance of moisture or dust.
As an additional precautionary measure to prevent formation of moisture in the battery
compartment, it is recommended that the battery be changed in an environment equivalent to the local outdoor temperature and humidity (e.g., do not change the battery in an
air conditioned environment then take it outside during a hot sunny day).
86
Battery Hatch Removal
• Inspect the Button, Lens, and Housing to ensure they
are not cracked or damaged.
• If there is any sign of moisture in the module, DO NOT
use the XP 5 until it receives proper service by an Authorized SEEMANN Dealer, or the SEEMANN factory.
• Locate the Battery Compartment on the back.
• While applying steady inward pressure on the clear Battery Hatch, rotate the Hatch Ring clockwise 10 degrees
by pressing on the upper/right arm of the Ring with a
small blade screwdriver (Fig. 84).
Fig. 84 -Ring Removal
NOTE: If available, an adjustable face spanner
tool or a pair of pointed pliers can be used
instead of the screwdriver by inserting the
tips of the tool in the small holes in the Ring
(Fig. 85).
• Lift the Hatch Ring up and away from the Housing.
• Remove the clear Battery Hatch.
WARNING: If damage, moisture, or corrosion is
found, it is recommended that you return your
XP 5 to an Authorized SEEMANN Dealer, and DO
NOT attempt to use it until it has received factory prescribed service.
Fig. 85 - Ring Removal (alternate)
87
NOTE: If the old battery can be removed and
the new one inserted within 10 seconds, nitrogen and oxygen calculations ,and settings,
will be retained for repetitive dives.
Battery Removal
• Remove the Retaining Bar located across the lower portion of the Battery (Fig. 86a).
• Remove the Hatch O-ring. DO NOT use tools.
• Using care not to damage the Battery Contacts (Fig. 86
b/c), slide the Battery up and out of the right side of the
Battery Compartment.
CAUTION: Do not allow a metal object to short
circuit the top of the Battery which is positive
(+) to the negative ( - ) contact of the Battery
Compartment.
b
a
Fig. 86 - Battery Compartment
88
c
• Closely check all of the sealing surfaces for any signs
of damage that might impair proper sealing.
• Inspect the Buttons, Lens, and Housing to ensure they
are not cracked or damaged.
• If it is necessary to clean the Battery Compartment, flush
it and all components with a solution of 50% white vinegar and 50% fresh water. Rinse with fresh water, and
allow to dry overnight, or blow dry with a hair dryer.
Battery Installation
• Slide a new 3 volt type CR2450 Lithium Battery, negative
(-) side down into the Battery Cavity from the right side
and ensure that it slides under the contact clip on the left
rim of the cavity.
• Orient the Retaining Bar across the lower portion of the
Battery and carefully push it down into position (Fig. 87).
Fig. 87 - Battery Installation
Battery Hatch and Hatch Ring Installation
• Lightly lubricate the new Hatch O-ring with silicone
grease and place it on the inner rim of the Battery Hatch.
Ensure that it is evenly seated. This O-ring must be a
genuine SEEMANN part that can be purchased from an
Authorized SEEMANN Dealer. Use of any other O-ring
will void the warranty.
• Slide the Ring, top portion first, onto your thumb (Fig. 88).
• Carefully place the clear Battery Hatch (with O-ring) into
position on the rim of the Battery Compartment, then
press it evenly and completely down into place with your
same thumb.
• Maintain the Battery Hatch securely in place and, using
your other hand, slide the Hatch Ring down off your
thumb and into position around the Battery Compartment.
The tabs on the Ring fit down into the slots located at the
2 and 9 o'clock positions (Fig. 89).
Fig. 88 -Hatch Installation
Fig. 89 -Orientation of Hatch Ring
89
• Using your fingers, turn the Ring counter clockwise 5
degrees until the tabs engage, then tighten it 5 more degrees by turning it counter clockwise with the aide of a
small blade screwdriver, pressing against the upper/left
arm of the Ring (Fig. 90).
Fig. 90 -Ring Installation
NOTE: If available, an adjustable face spanner
tool or pair of pointed pliers can be used by
placing the tips in the small holes of the Ring
(Fig. 91).
Inspection
• Activate the unit and watch carefully as it performs a full
diagnostic and battery check, and enters Surface Mode.
Observe the LCD display to ensure it is consistently
clear and sharp in contrast throughout the screen.
WARNING: If any portions of the display are
missing or appear dim, or a Low Battery condition is indicated, return your XP 5 to an Authorized XP 5 Dealer for a complete evaluation
before attempting to use it.
90
Fig. 91 -Ring Installation
(alternate)
REFERENCE
91
DECOMPRESSION MODEL
The Decompression Model used by the XP 5 is based on the
no decompression multilevel repetitive dive schedules successfully tested by Dr. Ray Rogers and Dr. Michael Powell.
These tests did not include repetitive dives deeper than 90
feet (27 meters) or decompression dives. Due to the
present unavailability of statistical data, XP 5 decompression predictions are based on U.S. Navy theory.
TISSUE COMPARTMENT CONTROL
The XP 5 tracks twelve tissue compartments with halftimes
ranging from 5 to 480 minutes. The Nitrogen Bar Graph always displays the controlling compartment that is the only
one important at that time. Think of the Nitrogen Bar Graph
as twelve separate transparent displays laid on top of one
another. The compartment that has filled up fastest is the
only one the viewer can see from the top.
At any particular point, one compartment may be absorbing
nitrogen, while another that was previously higher may be
off-gassing. Figure 96 illustrates one compartment
“handing over” control to another compartment at a different
depth. This feature of the Decompression Model is
the basis of multilevel diving, one of the most important contributions the XP 5 offers you.
92
Tissue
Half-Times
40
20
Display Seen
by the Diver
Fig. 96 - Tissue Compartment
Control Hand Over
NO DECOMPRESSION LIMITS
Note how the No Decompression Limits for the XP 5 are
contrasted with the U.S. Navy limits (Fig. 97). The XP 5
Dive Planner does not scroll past 160 feet (48 meters), or
to depths at which projected dive time is less than one
minute (unless Plan Mode is set for the Extended Range of
330 feet/99 meters) .
WARNING: Using the XP 5, just as using the U.S.
Navy (or other) No Decompression Tables, is
no guarantee of avoiding decompression
sickness (i.e., the bends).
WARNING: SEEMANN advocates responsible
diving practices . Decompression diving is
inherently hazardous and greatly increases
your risk of decompression sickness - even
when performed according to the computer's
calculations. In the event that you must make
an emergency decompression dive, you must
not make another dive for at least 24 hours.
XP 5
U.S.N.
Depth
NDL-mins.
NDL
feet (meters) Eng (Metric) mins.
30 (9)
260 (283)
--35
--310
40 (12)
137 (144)
200
50 (15)
81 (85)
100
60 (18)
57 (59)
60
70 (21)
40 (41)
50
80 (24)
30 (32)
40
90 (27)
24 (25)
30
100 (30)
19 (20)
25
110 (33)
16 (17)
20
120 (36)
13 (14)
15
130 (39)
11 (11)
10
140 (42)
9 (9)
10
150 (45)
8 (8)
5
160 (48)
7 (7)
5
170 (51)
7 (6)
5
180 (54)
6 (6)
5
190 (57)
5 (5)
--Fig. 97 - No Decompression Limits
93
OXYGEN EXPOSURE LIMITS
Predicted exposure limits and oxygen calculations of the XP
5 are based on maximum exposure durations published by
the National Oceanic and Atmospheric Administration in the
October 1991 NOAA Diving Manual (Fig. 98).
Both central nervous system (CNS) oxygen toxicity and
pulmonary oxygen toxicity were taken into consideration
when the limits were published by NOAA.Although CNS
oxygen toxicity is considered the primary constraint for
higher levels of PO2, there are circumstances in which pulmonary oxygen toxicity can limit exposures.
CNS oxygen toxicity is not considered likely at PO2 levels
below 1.30 ATA. It is however related to the diver's work
level. Performing strenuous tasks could cause the
symptoms of oxygen poisoning to occur at PO2 levels
lower than they normally would appear during casual
recreational diving.
WARNING: The nitrox features of the XP 5 are
intended for use only by recreational divers
trained for nitrox diving by an instructor
certified by a recognized training agency to
teach diving with nitrox.
94
Maximum
Exposure Time
PO2
(ATA)
0.60
0.70
0.80
0.90
1.00
1.10
1.20
1.30
1.40
1.50
1.60
Per Dive
(Min)
720
570
450
360
300
240
210
180
150
120
45
Per 24hr
(Min)
720
570
450
360
300
270
240
210
180
180
150
Fig. 98 - Oxygen Exposure Limits
Diving with enriched nitrogen-oxygen (nitrox) mixtures requires special knowledge of
the variations imposed upon divers, their activities, and their equipment by the increased percentage of oxygen. SEEMANN recommends completion of a specialized
Nitrox training course by a recognized training agency prior to diving with any enriched
nitrogen-oxygen (nitrox) mixtures.
WARNING: In the event that you exceed the maximum limit of per dive
allowable oxygen exposure, it is recommended that you allow a
surface interval of at least 2 hours before reentering the water. If you
exceed the maximum limit of 24 hour period allowable oxygen exposure, you should allow a surface interval of at least 24 hours.
ALTITUDE DIVING
Diving at high altitude requires special knowledge of the variations imposed upon
divers, their activities, and their equipment by the decrease in atmospheric pressures.
SEEMANN recommends completion of a specialized Altitude training course by a recognized training agency prior to diving in high altitude lakes or rivers.
Atmospheric pressure decreases as altitude increases above sea level. Weather
systems and ambient temperature also affect barometric pressures. Consequently,
depth reading instruments that do not compensate for the decrease in pressure
indicate depth readings shallower than the depth they are actually at.
The XP 5 automatically compensates for decreased ambient pressure when activated
at high altitudes up to 14,000 feet (4,267 meters). Its program contains a high altitude
algorithm that reduces no decompression and oxygen exposure limits to add a larger
zone of caution.
95
Whenever the XP 5 is manually activated at altitudes higher than 2,000 feet (610
meters), it will automatically recalibrate itself to measure depth in feet of fresh water
rather than feet of sea water. Therefore, when returning to lower altitudes, diving
should not be conducted until the unit automatically clears of any residual nitrogen and
oxygen loading and resets to operate at the new altitude.
WARNING: Altitude compensation provided by the XP 5 takes place
when the unit is manually activated. If the XP 5 is Activated by
immersion in water, it will not provide the Altitude compensation. DO
NOT dive at any different altitude until the unit shuts off and is manually
activated. It will recalibrate automatically when manually reactivated at
the new altitude.
If the unit is activated at elevations higher than 14,000 feet (4,267
meters), it will perform a diagnostic check followed by immediate
shutdown.
FLYING AFTER DIVING
In 1990 the Undersea and Hyperbaric Medical Society (UHMS) published a set of guidelines aimed at minimizing the possibility of decompression sickness due to flying too
soon after diving. The UHMS suggests* divers using standard air cylinders and
exhibiting no symptoms of decompression sickness wait 24 hours after their last dive
to fly in aircraft with cabin pressures up to 8,000 feet. (2,440 meters).
* excerpted from “The UHMS Flying After Diving Workshop”
96
The two exceptions to this recommendation are:
• If a diver had less than 2 hours total accumulated dive time in the last 48 hours, then
a 12 hour surface interval before flying is recommended.
• Following any dive that required a decompression stop, flying should be delayed for
at least 24 hours, and if possible, for 48 hours.
Since the 1990 UHMS guidelines were introduced, data from the Diver’s Alert Network
(DAN) was introduced that resulted in DAN’s position** that “A minimum surface
interval of only 12 hours would be required in order to be reasonably assured a diver
will remain symptom free upon ascent to altitude in a commercial jet airliner (altitude up
to 8,000 feet/2,440 meters). Divers who plan to make daily, multiple dives for several
days, or make dives that require decompression stops, should take special precautions
and wait for an extended surface interval beyond 12 hours before flight”.
** excerpted from “DAN’s Position on Recreational Flying After Diving”
Both the UHMS and DAN agree that “There can never be a flying after diving rule that
is guaranteed to prevent decompression sickness completely. Rather, there can be a
guideline that represents the best estimate for a conservative . . . surface interval for
the vast majority of divers. There will always be an occasional diver whose physiological makeup or special diving circumstances will result in the bends”.
To reduce the risk of developing decompression sickness after a single no decompression dive, current guidelines suggest waiting 12 hours prior to exposure to
atmospheric pressures equivalent to 1,000 feet (330 meters) above sea level, or
greater. When repetitive dives are conducted during the same day, or period of days,
it is suggested that the interval be increased to a minimum of 24 hours. Note that land
travel to higher elevations after diving must also be considered as an exposure to
altitude.
97
SPECIFICATIONS
CAN BE USED AS
OPERATIONAL MODES
•
•
•
•
•
Activation/Diagnostic
Surface
•
•
•
•
Dive Planner
Time to Fly Countdown
Desaturation Countdown
Dive Log (Date / Time, Nitrogen, & Oxygen)
•
Set Mode 1:
• FO2 (21 - 50 %)
• Max Depth Alarm (30 - 300 ft /10-99 m)
• Elapsed Dive Time Alarm (0:10 - 3:00 hr:min)
• PC Interface (to Download data)
•
Set Mode 2:
• Units of Measure (Imperial / Metric)
• Hour Format (12 / 24)
• Time (Hour, Minute)
• Date (Year, Month, Day)
• Audible Alarm / LED Warning (On/Off)
• Max Nitrogen Bar Graph Alarm (1 - 8 segments)
• Dive Time Remaining Alarm (0:00 - 0:20 min)
• Max PO2 Alarm (1.20 - 1.60 ATA)
• FO2 50% Default (On/Off)
• Backlight Duration (0 / 3 / 7 sec)
• Sampling Rate (2 / 15 / 30 / 60 sec)
• Digital Gauge Mode (On / Off)
• Water Activation (On / Off)
•
Simulator (Demo) Mode
Air Computer
Nitrox Computer
Digital Depth Gauge/Timer
NO DECOMPRESSION MODEL
Basis:
• Modified Haldanean Algorithm
• 12 tissue compartments
Data Base:
• Diving Science and Technology (DSAT) - Rogers/Powell
Performance:
• Tissue compartment halftimes (mins.) Spencer’s “M” values
5, 10, 20, 40, 80, 120, 160, 200, 240, 320, 400, 480
• Reciprocal subsurface elimination
• 60 minute surface credit control for compartments faster
than 60 minutes
• Tissue compartments tracked up to 24 hours after last dive
Decompression Capabilities:
• Decompression stop ceilings at 10, 20, 30, 40, 50, & 60 ft
(3, 6, 9, 12, 15, & 18 m)
Altitude Algorithm:
• Based on NOAA tables
Oxygen Exposure Limits:
• Based on NOAA tables
98
SPECIFICATIONS (CONTINUED)
OPERATIONAL MODES (continued)
•
•
•
•
•
No Decompression Dive:
• #1 (Current Depth, Dive Time Remaining, Max Depth, Elapsed Dive Time, Bar Graphs)
• #2 (Current Depth, Dive Time Remaining, Temperature, Time of Day, Bar Graphs)
• #3 - only if a nitrox dive (Current Depth, Dive Time Remaining, Current PO2, Bar Graphs)
Decompression Dive:
• #1 - Main (Current Depth, Total Ascent Time, Stop Depth / Time, Bar Graphs)
• #2 (Current Depth, Total Ascent Time, Max Depth, Elapsed Dive Time, Bar Graphs)
• #3 - only if a nitrox dive (Current Depth, Total Ascent Time, Current PO2 value, Bar Graphs)
Violation (Conditional, Delayed, & Immediate/Gauge)
High PO2 (1.20 - 1.60 ATA)
High Oxygen Accumulation (allowed per dive or 24 hour period)
DISPLAY RANGE/RESOLUTION
Numeric Displays:
• Dive Number
• Depth
• Maximum Depth
• FO2 Set Point
• PO2 Value
• Dive Time Remaining
• Total Ascent Time
• Decompression Stop Time
• Elapsed Dive Time
• Surface Time
• Dive Log Surface Interval
• Temperature
Range:
0 - 24
0 - 399 ft (0 - 120 m)
399 ft (120 m)
Air, 21 - 50 %
0.00 - 5.00 ATA
0:00 - 9:59 hr:min
0:00 - 9:59 hr:min
0:00 - 9:59 hr:min
0:00 - 9:59 hr:min
0:00 - 23:59 hr:min
0:00 - 25:59 hr:min
0 - 99 degrees
Resolution:
1
1 ft (.1 m / 1 m > 99.9 m)
1 ft (.1 m / 1 m > 99.9 m)
1%
.01 ATA
1 minute
1 minute
1 minute
1 minute
1 minute
1 minute
1 degree
99
SPECIFICATIONS (CONTINUED)
DISPLAY RANGE/RESOLUTION (continued)
Numeric Displays:
• Time to Fly
•
Time to Desaturate
•
Temperature
Range:
23:50 - 0:00 hr:min*
(* starting 10 min after the dive)
23:50 - 0:00 hr:min*
(* starting 10 min. after the dive)
0 to 99°F (-9 to 60°C)
Special Displays:
• Diagnostic Display
• Out of Range (- - -)
• Gauge Mode Countdown Timer
Resolution:
1 minute
1 minute
1°
Occurrence
After Manual Activation
>330 feet (>99.9 meters)
23:50 to 0:00 hr:min (after violation)
BAR GRAPHS
Nitrogen Bar Graph:
segments
Oxygen (O2) Bar Graph:
segments
•
•
•
5
2
1
•
•
•
3
1
1
No Decompression zone (green)
No Deco Caution zone (yellow)
Decompression Warning zone (red)
Normal zone (green)
Caution zone (yellow)
Danger zone (red)
Ascent Rate Indicator:
60 feet (18 m) & Shallower
Deeper than 60 feet (18 m)
•
•
•
•
•
segments
0
1
2
3
4
5
segments
0
1
2
3
4
5
Normal Zone (Green)
Normal Zone (Green)
Normal Zone (Green)
Caution Zone (Yellow)
Too Fast Zone (Red - flashing)
100
feet/min
0 - 10
11 - 15
16 - 20
21 - 25
26 - 30
> 30
meters/min
0-3
3.5 - 4.5
5-6
6.5 - 7.5
8-9
>9
feet/min
0 - 20
21 - 30
31 - 40
41 - 50
51 - 60
> 60
meters/min
0-6
6.5 - 9
9.5 - 12
12.5 - 15
15.5 - 18
> 18
SPECIFICATIONS (CONTINUED)
OPERATIONAL PERFORMANCE
Function:
• Depth
• Timers
Accuracy:
±1% of full scale
1 second per day
Dive Counter:
• Displays Dives #1 to 24, 0 if no dive made yet
• Resets to Dive #1, upon diving (after midnight - new 'date')
Dive Log Mode:
• Stores 24 most recent dives in memory for viewing
• After 24 dives, adds 25th dive in memory and deletes the first dive
Altitude:
• Operational from sea level to 14,000 feet (4,267 meters) elevation
• Compensates for altitude only if manually activated at that altitude (no compensation if activated by immersion in water)
• Recalibration of depth readings from 'feet of sea water' to 'feet of fresh water' when manually activated at elevations greater
higher than 2,000 feet (610 meters) elevation
Power:
• Battery
• Shelf life
• Replacement
• Life expectancy
1 - 3 vdc, type CR2450 Lithium battery
Up to 5 years
User replaceable (annual recommended)
100 dive hours (if 1 - 1 hour dive per dive day) to over
300 dive hours (if 3 - 1 hour dives per dive day)
101
SPECIFICATIONS (CONTINUED)
OPERATIONAL PERFORMANCE (continued)
Activation:
• Manual - push button (recommended)
• Automatic - by immersion in water (as a backup, if set ON)
• H2O graphic indicates Wet Contacts are bridged (unit must be dried prior to transport or storage).
• Cannot be manually activated deeper than 4 feet (1.2 meters), if the Water Activation feature is set OFF.
• Cannot be activated at elevations higher than 14,000 feet (4,267 meters)
Shutoff:
• Automatically shuts off if no dive is made within 120 minutes after initial activation. Reactivation required.
• Automatically shuts off 24 hours after last dive (will reactivate if the H2O graphic is displayed).
• Cannot be shut off manually.
Setting FO2:
• Automatically set for 'Air' upon activation
• Remains set for Air unless an FO2 numerical value is set
• Nitrox set points from 21 to 50 %
• If set for 21%, remains set for 21% until changed
• If set for >21%, it reverts to 50% 10 minutes after the dive, if the FO2 Default is ON. If the FO2 Default is OFF, the value will remain at the value set.
Operating Temperature:
• The ATMOS 2 will operate in almost any temperature diving environment in the world, between 32 °F and 140 °F (0 and 60
°C). At extremely low temperatures, the LCD may become sluggish, but this will not affect it's accuracy. If stored or transported in extremely low temperature areas (below freezing), you should warm the module and its battery with body heat before
diving.
ACCESSORIES (optional items available from your Authorized AERIS Dealer)
• Lens Protector (computer module) - adheres to lens face, prevents scratches
• PC download package (hardware and software)
• Battery Kit - includes 1 battery, 1 battery hatch o-ring, silicone grease
102
GLOSSARY
Air Dive - A dive conducted using air (approximately 21% oxygen & 79% nitrogen) as the breathing gas.
Algorithm- A step-by-step mathematical formula designed to accomplish a particular result (i.e. Dive Time Remaining in the ATMOS 2).
Alternate Display - Additional information accessible by pressing a control button.
Altitude Dive - A dive made at an elevation above sea level (2,000+ ft. / 610+ m.) where a different set of no decompression tables is used .
Ascent Rate - The speed that a diver ascends toward the surface.
Audible Alarm- A computer emitted tone that alerts the diver to potential danger.
Battery Indicator - A display icon that flashes (while in Surface Mode) to indicate a Low Battery Condition.
Caution Zone - The yellow sections of the Nitrogen Bar Graph , O2 Bar Graph, and Variable Ascent Rate Indicator that give a visual warning of a diver’s
proximity to decompression limits, oxygen tolerance limits, and ascent rate, respectively.
Ceiling - See decompression ceiling.
Clean Dive - A dive preceded by 24 hours of no diving activity.
CNS - Abbreviation for the Central Nervous System of the body.
Competitive Dive - A dive conducted for profit or prize.
Compartment - A term applied to the hypothetical modeling of nitrogen absorption in the tissues (more accurate than the term “tissue” because dive
computer models have no direct relation to human tissues).
DCS - Abbreviation for decompression sickness, i.e., “the bends”.
DECO- Abbreviation for Decompression.
Decompression Ceiling- The shallowest depth a diver may reach upon ascent without risking decompression sickness.
Decompression Stop - The depth(s) at which a diver must pause during ascent to allow absorbed nitrogen to escape naturally from the tissues.
Depth Sensor - an electro-mechanical device that converts water pressure into an electrical signal, that is converted to a visual depth display.
DEMO - Abbreviation for demonstration, a variety of modes that display sample dives.
Diagnostic Mode - The first display seen on dive computers after initial activation during which time a self–check for internal faults is performed.
Display - A visual readout of information.
Dive Downloader - An AERIS name for a PC interface hardware/software package.
Dive Log Mode - A computer display of previous dive information.
Dive Planner - A display of available dive times at 10 foot (3 meter) intervals from 30 to 160 feet. (9 to 48 meters) used when dive planning.
Dive Time Remaining - A display of the time before a diver must surface based on no decompression status.
Elapsed Dive Time - The total time spent underwater during a dive between 5 feet (1.5 meters) on initial descent to 3 feet (1 meter) on final ascent.
FO2 - The fraction (percent / 100) of oxygen (O2) in the breathing gas mixture.
Icon - a small pictorial representation of an operational mode
LCD - Abbreviation for liquid crystal display, an easily viewed low voltage display usually found on dive computers
Maximum Depth - The deepest depth attained during a dive.
Mode - A specific set of functions in a dive computer.
103
GLOSSARY (CONTINUED)
Multi-level Dive - A type of dive profile where the diver spends various times at different depths (opposite of a “Square Wave”
dive profile).
Nitrogen Bar Graph - A graphic display of simulated nitrogen absorption on AERIS dive computers.
Nitrox - A nitrogen-oxygen breathing gas mixture that contains a higher fraction of oxygen than air.
Nitrox Dive - A dive conducted using nitrox (22 to 50 % O2) as the breathing gas.
NOAA - Abbreviation for National Oceanic and Atmospheric Administration.
No Deco - Abbreviation for No Decompression.
No Deco Time Remaining - The amount of dive time remaining based on no-decompression status.
No Decompression - Any part of a dive where the diver can surface without requiring a decompression stop.
O2 Bar Graph - A visual representation of oxygen accumulation on a dive computer display.
OTU - Abbreviation for oxygen tolerance unit. A Hamilton's Repex method term for oxygen dose.
Out of Range - The point at which a dive computer can no longer supply correct dive information.
Oxygen Tolerance - Dose or exposure to the physiological affects of elevated levels of oxygen.
Oxygen Toxicity - The adverse physiological affects of exposure to elevated levels of oxygen.
Partial Pressure - The proportion of the total pressure contributed by a single gas in a mixture of gases.
PO2 - Partial pressure of oxygen. The proportion of total pressure of a gas mixture contributed by oxygen.
Repetitive Dive - Any dive that takes place within 12 hours of a previous dive.
Safety Stop - A depth at which a diver may choose, but is not required, to pause during ascent to allow absorbed nitrogen to escape naturally from the
tissues.
Square Wave Dive - A type of dive profile where the entire dive is spent at one depth between descent and ascent.
Tissue - See Compartment.
Tissue Compartment - See Compartment.
Transducer - An electro-mechanical device in a dive computer that acts as a depth or pressure sensor.
Transition Period - The first 10 minutes of surface time after ascending above 3 feet (1 meter) from a dive.
Variable Ascent Rate Indicator - A display that shows ascent rate as a bar graph alongside a color coded indicator.
104
RESPONSIBLE COMPUTER DIVING
Since the advent of dive computers, it is a common mistake to assume that the old traditional rules of diving no
longer apply, but the truth is just the opposite. Keep these basic rules in mind:
• Plan each dive, and dive your plan - Your computer was not designed to make decisions for you, only to
provide you with the information you need to make responsible decisions for yourself. This begins with a
dive plan that will help you avoid a low air or decompression situation.
• Do not plan any dive that exceeds your training or experience level.
• Inspect your computer before every dive - If it shows any signs of damage or abnormal function, DO NOT
dive with it until it has received factory service.
• Make your deepest dive first - When making repetitive dives, it is imperative to ensure that each consecutive
dive is shallower than the one before. This will allow your body's slower tissues to continue outgassing nitrogen.
• Make the deepest part of your dive first, and gradually work your way to the surface using a “staircase” profile - The ability to perform multilevel diving is one of the most important contributions of a dive computer,
and you should take advantage of it. It will increase your bottom time and at the same time decrease your
risk of decompression sickness.
• Ascend slowly by following an ascent line whenever possible, or by ascending diagonally toward the surface - Watch the Ascent Rate Indicator closely while you ascend, and keep it in the green zone as much as
possible.
• Make a safety stop at 15-20 feet (4.5-6 m) at the end of every dive - A safety stop of as little as 5 minutes has
been shown to have a dramatic effect on the bubble formation in divers. It's important. Don't forget it.
• You should make every effort to complete all of your ascents with the Nitrogen Bar Graph inside the green
zone.
• If you inadvertently entered Decompression Mode, you must not complete your ascent until the Nitrogen
Bar Graph is at least inside the yellow Caution Zone.
• While you cannot provide a guarantee against the occurrence of decompression sickness, you may
choose your own personal zone of caution based upon your individual age, physique, excessive weight,
training, experience, etc. to reduce the statistical risk. By 'backing off' on the bar graph (maintaining fewer
segments) and not pushing the limits, you can establish and adjust your personal level of conservatism
and margin of safety.
105
NOTES
106
SERVICE RECORD
O
DI
Purchased from ______________________
RESP
Date of purchase _____________________
VER
Serial Number ________________________
N SI LE
B
Below to be filled in by an Authorized SEEMANN Dealer:
Date
Service Performed
Dealer / Technician
107
SEEMANN SUB GmbH & Co. KG
Johann-Höllfritsch-Str. 47
D-90530 Wendelstein
Tel: +49 (0) 9129- 90 995- 0
Fax: +49 (0) 9129- 90 995- 50
Website: http://www.seemannsub.de
E-mail: office@seemannsub.de
© 2004 SEEMANN
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