Aeris A300 CS User manual

1
A300 CS OPERATING MANUAL
© 2002 Design, 2014 Doc. No. 12-7287-r03 (7/14/14)
A300 CS
DIVE COMPUTER
OPERATING MANUAL

2
A300 CS OPERATING MANUAL
© 2002 Design, 2014 Doc. No. 12-7287-r03 (7/14/14)
Welcome
to
AERIS
and
Thank You
for choosing the
A300 CS

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A300 CS OPERATING MANUAL
© 2002 Design, 2014 Doc. No. 12-7287-r03 (7/14/14)

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A300 CS OPERATING MANUAL
© 2002 Design, 2014 Doc. No. 12-7287-r03 (7/14/14)
NOTICES
LIMITED TWO-YEAR WARRANTY
For details, refer to the Product Warranty Registration Card provided. Register on line at www.diveaeris.com
COPYRIGHT NOTICE
This operating manual is copyrighted, all rights are reserved. It may not, in whole or in part, be copied, photocopied, reproduced, translated, or reduced
to any electronic medium or machine readable form without prior consent in writing from AERIS/2002 Design.
A300 CS Operating Manual, Doc. No. 12-7287
© 2002 Design, 2014
San Leandro, CA USA 94577
TRADEMARK, TRADE NAME, AND SERVICE MARK NOTICE
AERIS, the AERIS logo type, A300 CS, the A300 CS logo, Air Time Remaining (ATR), Diver Replaceable Batteries, Graphic Diver Interface, Tissue Loading
Bar Graph (TLBG), Pre Dive Planning Sequence (PDPS), Set Point, Control Console, Turn Gas Alarm, ACI, and Dual Algorithm are all registered and unreg-
istered trademarks, trade names, and service marks of AERIS. All rights are reserved.
PATENT NOTICE
U.S. Patents have been issued, or applied for, to protect the following design features:
Dive Computer with Free Dive Mode and Wireless Data Transmission (U.S. Patent no. 7,797,124), Dive Computer with Free Dive Mode (U.S. Patent no.
8,600,701), and Air Time Remaining (U.S. Patent no. 6,543,444). Other patents pending. User Setable Display (U.S. Patent no. 5,845,235) is owned
by Suunto Oy Finland.
DECOMPRESSION MODEL
The programs within the A300 CS 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 A300 CS dive computer model is based upon the latest research and experiments in decompres-
sion theory. Still, using the A300 CS, 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.
Pay special attention to items marked with this Warning symbol.
FCC ID: MH8A
FCC COMPLIANCE:
This equipment complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: 1.) this equipment may not cause harmful
interference, and 2.) this equipment must accept any interference received, including interference that may cause undesired operation.
FCC INTERFERENCE STATEMENT:
This equipment has been tested and found to comply with the limits for an Intentional Radiator, a Class B Digital Device, pursuant to Part 15 of FCC Rules,
Title 47 of the Code of Federal Regulations. These rules are designed to provide reasonable protection against harmful interference in a commercial or
residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the
instructions, may cause harmful interference to radio communications.
There is no guarantee that interference will not occur in a particular installation. If this equipment does cause interference to radio or television reception,
which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following
measures:
• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment to an outlet on a circuit different from that to which the receiver is connected.
• Consult the dealer or an experienced radio/TV technician.
Warning: Changes or modifications to this unit not expressly approved by AERIS/2002 Design could void the user's
authority to operate the equipment.

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A300 CS OPERATING MANUAL
© 2002 Design, 2014 Doc. No. 12-7287-r03 (7/14/14)
ACTIVATION
AND
OVERVIEW

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A300 CS OPERATING MANUAL
© 2002 Design, 2014 Doc. No. 12-7287-r03 (7/14/14)
HOME MENU
MY INFO
DC INFO
SETUP
LO G
HISTORY
NORM
GAUG
FREE
COMPASS
BATT
WELCOME
AERIS
INTERACTIVE CONTROL CONSOLE
The interactive control console utilizes 3 control buttons that are referred to as M, A, and S (Fig. 1).
• M (left front) - Menu, Mode, Minus (decrease)
• A (right front) - Advance, Add (increase).
• S (right side) - Select, Save.
ACTIVATION
To activate the A300 CS, press/release any button.
• A Welcome screen will be displayed for 3 seconds (Fig. 2)* during which diagnostics will be performed verifying that
sensors and battery voltage are within tolerance.
*After the Battery is replaced on a new day prior to performing any dives, a message is displayed before the Welcome.
• It will also check ambient barometric pressure, and calibrate present depth as 0. When at 3001 feet (916 meters), or
higher, it will adjust depth for the higher altitude.
• After the diagnostic check, the Home Menu screen will be displayed (Fig. 3) allowing you to select what you would like to
do (view information, perform setup, access operating modes).
• If no button is pressed within 2 minutes, the unit will enter PSM (Power Saver Mode) turning the screen off.
Refer to page 8.
• If no dive is made within 2 hours, the unit will shut Off.
Wet activation contacts will automatically activate the unit and cause it to enter dive mode when the contacts become wet and
it senses depth of 5 FT (1.5 M). They will not inadvertently activate Surface Mode such as when in a wet gear bag.
MENU SYSTEM
The viewing area is used to display alpha numeric messages and measured values as well as menu type systems for selection of
settings and various auxiliary functions. It also serves as the Digital Compass.
Menus which are identified by function such as Main, Set, and Switch. The items available within the menus vary according to
the mode you are in at the time. Some settings, such as for Units, are common throughout the modes and can be changed in any
Utilities Menu.
• Home Menu
>> Home Setup Menu
>> Set Date Time Menu
• NORM Surface Main Menu
>> Set Gas Menu
>> Set TMTs Menu
>> Set Alarms Menu
>> Set Utilities Menu
>> Set Preview Menu
• NORM Dive Menu
>> Gas/TMT Switch Menu
• GAUG Surface Main Menu
>> Set TMTs Menu
>> Set Alarms Menu
>> Set Utilities Menu
• GAUG Dive Menu
>> TMT Switch Menu
• FREE Surface Main Menu
>> Set Menu
• Compass Surface Menu
>> Reference Menu
>> Set Declination Menu
• Compass Dive Menu
>> Reference Menu
Upon entering a menu, movement through it starts at the first (top) selection, then continues in a rolling manner down the screen.
Items or selections are generally shown in columns of up to 7 items. Additional items form a second column (Fig. 4).
Typical button operations within menu systems >>
A (< 2 sec) - to step down the screen (forward) through selections.
M (< 2 sec) - to step up the screen (backward) through selections.
S (< 2 sec) - to select or access the item highlighted.
S (2 sec) - to step back to the menu after the item is selected.
M (2 sec) anytime, or no button action for 2 minutes - will revert to Home or the Surface Main.
Fig. 3 - Home Menu
(after Diagnostics)
Fig. 2 - Diagnostic Check
(for 3 sec, then Home Menu)
GAS 1
GAS 2
GAS 3
GAS 4
DEPTH AL
TLBG AL
TURN AL
END AL
WAT ER
DEEP STOP
SAFE STOP
EDT AL
DTR AL
NORM SET PREVIEW
Fig. 4 - Sample Menu
(13 items, 2 columns)
Fig. 1 - Control Buttons
WAIT FOR BEEP
THEN ACTIVATE
Fig. 2A - Message given after
Battery Change on new day

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SAMPLE DISPLAY LAYOUTS
DISPLAY ICONS & GRAPHIC ABBREVIATIONS
(Full character graphics, such as AUDIBLE, are not listed below.)
A, AM = Am (time)
AL = Alarm
AR = Ascent Rate Indicator
ATR = Air Time Remaining
AV = Average
AVAIL = Available
BAR = Metric unit (pressure)
BATT = Battery Status
BT = Bluetooth
C = Centigrade (temperature)
CAL = Calibration (compass)
CDT = Countdown Timer
CF, CONSERV = Conservative Factor
D.M = Day & Month (date)
DA = Depth Alarm
DC = Dive Computer
DECO = Decompression
DESAT = Desaturation (nitrogen)
DS = Deep Stop
DSAT = Algorithm type
DTR = Dive Time Remaining
E = East (compass)
EDT = Elapsed Dive Time
EL, ELEV = Elevation (altitude level)
EMERG. = Emergency
F = Fahrenheit (temperature)
FO2 = Fractional % of Oxygen
FREE = Free Dive Mode
FT = Feet (depth)
GAUG, GAU = Digital Gauge Scuba Mode
INFO = Information
M = Meters (depth)
M.D = Month & Day (date)
MAX = Maximum
MIN = Minimum, Minutes (time)
N = North (compass)
NDC = No Deco Time Remaining
NDL = No Deco Limit (time)
NI = Nitrogen
No. = Number
NORM, NOR = Normal Scuba Mode
Nx = Nitrox (gas)
O2 = Oxygen
OTR = O2 Time Remaining
P, PM = Pm (time)
PO2 = Partial Pressure of O2 (ATA)
PSI = Pounds per Square Inch (pressure)
RTI = Repeating Time Interval
S = South (compass)
SAT = Saturation
SEC = Seconds (time)
SEG = Segments (bar graph)
SI = Surface Interval
SPG = Submersible Pressure Gauge
SURF = Surface (mode, time)
TAT = Total Ascent Time (deco)
TEMP = Temperature
TL, TLBG = Tissue Loading Bar Graph
TMT = Transmitter (tank pressure)
W = West (compass)
Z+ = Algorithm type
FT
GAS 1 ATR
PSI
1480 42
86
0:24
NDC
AR
TL
DS
BATT
NORM
GAS 1 DIVE
PSI
850 3
SURF 2:48
TL
BATT NORM SET ALARMS
AUDIBLE =
EDT =
TLBG =
DTR =
TURN =
END =
DEPTH =
ON
130 FT
0:40
8 SEG
0:10
1500 PSI
300 PSI
SURFACE MAIN SET MENU DIVE MAIN

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GAS 1 DIVE
PSI
380 5
SURF 0:11
TL
CHANGE
BATTERY
BATT
GAS 1 DIVE
PSI
850 1
SURF 1:03
TL
TMT 1
LOW BATTERY
BATT
POWER SUPPLY
• A300 CS Battery >> (1) 3 vdc, CR2, Lithium, 800 mAh - Duracell, Energizer, Panasonic, or RayOvac recommended.
• Use life (examples) >> 15 hours at 100% Brightness with Auto Dim set off; 34 hours at 60% Brightness with Auto Dim To
time set for 10 seconds and Dim level set for 10%. Refer to page 62 for more information relating to power usage.
Once a low battery alarm condition occurs (red icon flashing), sufficient time should be available to
ascend to the surface while Brightness is held to 60% maximum.
• Transmitter Battery (each) >> (1) 3 vdc, CR2, 800 mAh, Lithium.
• Use life >> 300 dive hours if (2) 1 hour dives per dive day.
• Replacement >> by user (annual recommended).
POWER SAVER MODE (PSM)
When 2 minutes elapse without any button being pressed while on the surface, the unit will enter a Power Saver Mode (PSM)
which turns the display screen off until a button is pressed at which time it will turn back on.
During the time that the screen is off, all operations continue as normal in the background with current updated information
displayed as soon as the screen comes on again.
An Auto Dim feature can also be used to save power during dives by dimming the display screen to a % level of Brightness that
you set prior to the dives. Refer to pages 13 and 62.
BATTERY STATUS
To access, while viewing the Home Menu when on the surface >>
• S (< 2 sec) to access Home Setup Menu, then -
• A or M (< 2 sec) until BATT, TMT STATUS is highlighted (Fig. 5).
• S (< 2 sec) then activates the unit's receiver, then the Status screen appears (Fig. 6).
Note that a color coded BATT icon is displayed at the upper/left of Surface and Dive Main screens as an indication of status.
• Green = good, meaning you have sufficient battery power to conduct normal diving activities.
• Yellow = caution (warning), meaning you should have sufficient battery power to complete a normal 1 hour dive.
• Red (while on the surface) = alarm, meaning the battery must be changed prior to starting a dive.
• Red (during a dive) = alarm, meaning you should savely ascend to the surface and replace the battery before continuing
with diving activities. Caution - The unit may shut off at any time without further warning.
LOW BATTERY WARNING
• The BATT icon will change from green to yellow when voltage decreases to 2.75 vdc.
• Battery change prior to any diving is recommended. Less than 1 hour dive time may be expected.
• The graphics LOW BATTERY will alternate with NORM (or GAUG or FREE) on the Surface Main (Fig. 7).
• If a dive is started, the graphic is not displayed on the dive mode screens.
• Brightness level will be limited to 60% with other functions continuing as usual.
LOW BATTERY ALARM
• The BATT icon will change from yellow to red (flashing) when voltage decreases to 2.50 vdc.
• Entry into dive modes and compass use is blocked. Battery change is required prior to starting any dives.
• The graphics CHANGE BATTERY will flash on the Surface Main (Fig. 8A) until the battery is changed or the unit shuts off.
• If a dive is in progress, the red BATT icon will flash and the graphics GO UP LOW BATTERY will be displayed red with 2 Up
Arrows (Fig. 8B) that will alternate with the usual information displayed until on the surface.
Ascent should be made to the surface following proper ascent protocols (respecting ascent speeds
allowed, and Deco and Safety Stops if possible).
TRANSMITTER (TMT) BATTERY STATUS
Indication is provided only while on the surface.
Low Battery Warning
• The graphics BATT LOW appear solid (yellow) on the Status screen (see Fig. 6).
• DC functions continue to be available (surface and dive).
Low Battery Alarm
• The graphics TMTx LOW BATTERY (red) alternate with the graphics NORM (or GAUG) on the SURF Main screen (Fig. 9).
• The graphics BATT LOW (red) also flash on the Status screen.
• TMT operation continues until Tank Pressure decreases to 50 PSI at which time the TMT's link is lost.
Fig. 5 - HOME SETUP MENU
(to access Battery Status)
Fig. 6 - BATTERY STATUS
Fig. 7 - A300 CS
LOW BATTERY WARNING
Fig. 8A - LOW BATTERY
ALARM (on surface)
SETUP MENU
SET DATE, TIME
BAT T, TMT STAT US
B L UE T O OT H
SET AUTO DIM
BATT, TMT STATUS
A300 CS =
TMT 1 =
TMT 2 =
TMT 3 =
TMT 4 =
BATT GOOD
NOT AVAIL
BAT T LO W
OFF
BATT GOOD
GAS 1 DIVE
PSI
850 1
SURF 1:03
TL
LOW
BATTERY
BATT
Fig. 9 - TMT LOW BATTERY
ALARM
FT
GAS 1 ATR
PSI
1320 36
64
AR
TL
BATT
GO UP
LO W BAT T E R Y
Fig. 8B - LOW BATTERY
ALARM (during dive)

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A300 CS OPERATING MANUAL
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BRIGHTNESS CONTROL
The level (%) of screen Brightness can be adjusted by accessing the Brightness Adjustment screen while viewing the Home Menu
screen, or a Surface or Dive Main screen (NORM, GAUG, or FREE), or the Compass OP Main screen.
• A (2 sec), while on the surface or during dives, will access a Brightness adjustment screen with the last % highlighted and
flashing. During a Low Battery Warning or Alarm condition, the level will be limited to 60% maximum.
ADJUST BRIGHTNESS, information is to include (Fig. 10):
> xx % (last value saved), flashing.
• S (2 sec) to step back to the screen from which access was gained without changing the % value.
• A (< 2 sec) to step upward through values of 10% to 100% one at a time in increments of 10%.
• M (< 2 sec) to step down through values one at a time.
• S (< 2 sec) to save the % setting and revert to the screen from which access was gained.
TIP: When an adjustment is made during a dive that is lower than the Auto Dim % set prior to the dive, the screen will remain
illuminated at the level you save until you adjust it to a % level above the Auto Dim % set.
AUDIBLE ALARM
While operating in NORM or GAUG Mode, the Audible will emit 1 beep per second for 10 seconds when alarms strike, unless it
is set Off. During that time, the Audible can be acknowledged and silenced by pressing S (< 2 sec).
The Audible will not be active when it is set OFF (a Set Alarms Menu selection).
FREE Dive Mode alarms, which emit 3 short beeps either 1 or 3 times, cannot be acknowledged or set OFF.
Alarms that strike during operations in Compass Mode are described on page 45.
Situations that will activate the NORM/GAUG 10 second Alarm include -
** Items apply only in NORM mode.
• Air Time Remaining (ATR) at 5 minutes, then again at 0 minutes.
• Turn Pressure at the value set (Transmitter 1 only).
• End Pressure at the value set (active Transmitter).
• Descent deeper than the Depth Alarm value set.
• Dive Time Remaining at the value set**.
• Elapsed Dive Time at the value set.
• PO2 level at .20 < value set for the gas in use and again at the value set**.
• O2 accumulation at 240 OTU (80%), then again at 300 OTU (100%)**.
• TLBG at the value set**.
• Ascent Rate (alarm = all 5 segments) exceeds 60 FPM (18 MPM) when deeper than 60 FT (18 M), or 30 FPM (9 MPM) at
60 FT (18 M) and shallower.
• Loss of the active Transmitter Link signal for more than 15 seconds during a dive.
• Entry into Decompression (Deco)**.
• Conditional Violation (above a required Deco Stop Depth < 5 minutes)**.
• Delayed Violation (above a required Deco Stop Depth => 5 minutes)**.
• Delayed Violation (a Deco Stop Depth > 60 FT/18 M is required)**.
• Delayed Violation (Depth > 330 FT/100 M).
• A Gas Switch would expose the diver to PO2 => 1.60 ATA for that gas**.
A single short beep (which cannot be disabled) sounds when -
• 5 minutes elapse on the surface after the Violation dive.
3 short beeps (which cannot be disabled) sound when -
• Ascent Rate (warning = 4 segments) is 51 to 60 FPM (15.1 to 18 MPM) when deeper than 60 FT (18 M), or 26 to 30 FPM
(7.5 to 9 MPM) at 60 FT (18 M) and shallower.
• FREE Dive Repeating Time Interval Alarm - 3 beeps once every 30 seconds, if set On.
• FREE Dive Depth Alarms 1, 2, 3 - 3 beeps 3 times at each value set.
• FREE Dive TLBG Alarm (Caution zone, 7 segments) - 3 beeps 3 times.
• FREE Dive Violation - 3 beeps 3 times upon entry into Decompression.
• FREE Countdown Timer - 3 beeps 3 times when time counts down to 0:00.
During the following situations, the audible will not turn off when acknowledged -
• Delayed Violations 1, 2, 3.
• Deco Stop Depth Violation => 70 FT/21 M stop required.
• FREE mode alarms.
20%
ADJUST BRIGHTNESS
Fig. 10 - BRIGHTNESS
ADJUSTMENT

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A300 CS OPERATING MANUAL
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OPERATING MODES
HOME >> This is a base mode that provides access to general items common to the operating dive modes.
NORM >> This is an operating dive mode used for Air and Nitrox scuba activity with up to 4 gases and transmitters.
If no previous dive has been taken within the past 24 hours, NORM is the default mode upon activation with others accessed as described later.
GAUG >> This is an operating dive mode used for scuba activity with up to 4 transmitters but without Ni-O2 calculations.
Once a GAUG dive has been conducted, operation locks into this mode for 24 hours.
FREE >> This is an operating dive mode used for breath hold diving activity with depth/time indication.
Ni-O2 calculations are performed while in FREE mode and are carried over between NORM and FREE.
COMPASS >> This is the navigation mode that can be used at any time while on the surface and during dives.
At any time while operating in Surface Modes*, operation will enter the Dive Mode selected upon descent to 5 FT (1.5 M) for 5 seconds.
*When a Low Battery Alarm condition is present, BATT icon is red, entry into Dive Modes is blocked.
• When Wet Activation is set Off, Dive Mode will only be activated when the unit is first activated and operating in a surface mode.
• When Wet Activation is set On, the selected Dive Mode will activate upon descent regardless of whether it is turned on by button first.
Operation shifts from Dive Mode to Surface Mode upon ascent to 2 FT (0.6 M) for 1 second; however, most surface mode screens will not be available
until a transition time elapses.
The reason for this is that making a descent during the first 10 minutes after surfacing from a NORM or GAUG dive, or during the first 1 minute after
surfacing from a FREE dive, is a continuation of that same dive.
A descent made after the 10 minute (or 1 minute) interval has elapsed is then considered a new dive.
During the first 10 minutes after surfacing from a NORM or GAUG dive, or the first 1 minute after surfacing from a FREE dive, the Dive Main screen will
be displayed with Surface Interval time replacing Current Depth. Dive ALTs can be accessed to view other information pertaining to that dive.
MODE STRUCTURE

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A300 CS OPERATING MANUAL
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HOME
MODE

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© 2002 Design, 2014 Doc. No. 12-7287-r03 (7/14/14)
HOME MENU
The Home Menu is displayed after activation and diagnostics. When the NORM, GAUG, FREE, or Compass Surface Main
screen is displayed, the Home Menu can be accessed by pressing M for 2 seconds.
• At any time while operating in the Home Menu system, pressing M (2 sec) will revert to the Home Menu screen.
• Operation will also revert to the Home Menu screen if no button is pressed within a 2 minute period.
Selections include (Fig. 11) -
> MY INFO - select to view personal information entered using the PC or Mac interface program.
> DC INFO - select to view information describing the dive computer, or to clear residual Ni-O2 used for calculations.
> SETUP - select to access the Setup Menu.
> LOG - select to access the NORM/GAUG Log data recorded for viewing.
> HISTORY - select to access the NORM/GAUG History data recorded for viewing.
> NORM - select to access the NORM operating mode for scuba activities.
> GAUG - select to access the GAUG operating mode for scuba activities.
> FREE - select to access the FREE operating mode for breath hold diving activities.
> COMPASS - select to access the Compass operating mode for navigation.
• A (2 sec) - to access Adjust Brightness (refer to page 8).
• A (< 2 sec) - to step forward (down) through the Menu selections. Down the left column, then down the right column.
• M (< 2 sec) - to step back (up) through the selections.
• S (< 2 sec) - to access the highlighted selection.
MY INFO (view only)
Up to 7 lines of information containing up to 16 characters each can be entered using the PC or Mac interface system.
Prior to personal information being entered, a graphic message is displayed as a reminder to enter your data (Fig. 12A).
Examples of information that can be entered include (Fig. 12B):
> Name.
> Phone number.
> Address.
> Medical.
> Emergency contact.
• S (2 sec) - to step back to the Home Menu.
DC INFO (view only)
This information should be recorded and kept, it will be required in the event that your unit requires factory service.
Information displayed with the screen title includes (Fig. 13):
> Model - assigned by the factory.
> Serial number - assigned by the factory.
> Firmware revision* - level currently installed in the unit.
> Date of last calibration - assigned by the factory.
*This number will change if Firmware is updated by factory service or by future download of revised firmware from the AERIS web site.
• S (2 sec) - to step back to the Home Menu.
• S (< 2 sec) - to access the Clear Ni-O2 Calculations screen.
CLEAR NI-O2 CALCULATIONS
This feature gives you the ability to reset the unit, clearing all nitrogen and oxygen calculations.
Information displayed with the screen title includes (Fig. 14):
> Graphics ENTER CODE TO CLEAR NI - O2 CALCULATIONS.
> 4 digit number (xx - yy, some random assignment by the factory,
not 20 - 02 which is the correct reset code
).
• S (2 sec) - to revert to the DC INFO screen, if you want to exit the routine without resetting the unit.
Reset procedure:
• S (< 2 sec) - to start the first 2 digits (xx on the left) flashing.
• A (hold) - to scroll upward through the first digits (xx) 4 per sec.
• A (< 2 sec) - to step upward through the digits (xx) one at a time.
• M (< 2 sec) - to step back through the digits (xx) one at a time.
• S (< 2 sec) - to save the first 2 digits (xx) and flash the second 2 digits (yy on the right).
• A (hold) - to scroll upward through the second digits (yy) 4 per sec.
• A (< 2 sec) - to step upward through the digits (yy) one at a time.
• M (< 2 sec) - to step back through the digits (yy) one at a time.
• S (< 2 sec) - to save the Reset Code, clear the unit (if (20 - 02), and turn the unit off with all nitrogen/oxygen calculations
and data being erased..
• S (2 sec) - to revert to the DC INFO screen, if you want to exit the routine without resetting the unit.
HOME MENU
MY INFO
DC INFO
SETUP
LO G
HISTORY
NORM
GAUG
FREE
COMPASS
BATT
Fig. 11 - BRIGHTNESS
ADJUSTMENT
MY INFO
USE
PC/MAC PROGRAM
TO ENTER
YOUR DATA
ACI/DIVERLOG
MY INFO
DEBRA DIVER
SAN LEANDRO, CA
BLOOD TYPE A+
EMERG. CONTACT:
DAVID DIVER
510-569-3100
510-346-0010
DC INFO
MODEL = A300 CS
FIRMWARE = R1A
SERIAL NO. = 123456
LAST CAL = 1.26.14
CLEAR NI-O2 CALC
ENTER CODE TO
CALCULATIONS
CLEAR NI-O2
20 - 02
Fig. 12A - MY INFO
(prior to any entries)
Fig. 12B - MY INFO
(sample of entries made)
Fig. 13 - DC INFO
(sample of entries made)
Fig. 14 - CLEAR
(sample of entries made)

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SET AUTO DIM
TIME UNTIL DIM
OFF
DIM TO BRIGHTNESS
30 %
SET AUTO DIM
TIME UNTIL DIM
0:30 MIN:SEC
DIM TO BRIGHTNESS
30 %
SETUP MENU
SET DATE, TIME
BAT T, TMT STAT US
B L UE T O OT H
SET AUTO DIM
Fig. 15 - HOME SETUP
MENU
HOME SETUP MENU, selections include (Fig. 15):
> SET AUTO DIM - select to access the Set Auto Dim feature.
> SET DATE, TIME - select to access the Set Date, Time Menu.
> BATT, TMT STATUS - select to activate the A300 CS' receiver then view status information for the A300 CS and Transmitters.
> BLUETOOTH - select to initialize the Bluetooth function.
• A (< 2 sec) - to step forward (down) through the Menu selections.
• M (< 2 sec) - to step back (up) through the selections.
• S (< 2 sec) - to access the highlighted selection.
• S (2 sec) - to revert to the Home Menu.
SET AUTO DIM, selections with the last settings saved include (Fig. 16A/B):
This feature will allow you to set a time that Dive Main screens will remain illuminated (after the last button press) at the Brightness
% level you adjusted it to before it is reduced to the Dim level that you set it to here.
> TIME UNTIL DIM with the graphic OFF, or 0:30 MIN:SEC, flashing.
> DIM TO BRIGHTNESS with 30 %.
• A (hold) - to scroll upward through Time set points 8/sec from OFF to 0:20 through 2:00 MIN:SEC in increments of 10
seconds (0:10).
• A (< 2 sec) - to step upward through the Time set points one at a time.
• M (< 2 sec) - to step back through the Time set points one at a time.
• S (< 2 sec) - to save the Time setting.
If OFF is selected, the Dim To Brightness setting is to be bypassed with operation reverting to the Home Setup Menu. The
Auto Dim feature is to be disabled and have no affect during dives.
If a min:sec Time value is saved, it is to become solid and Dim To Brightness % is to be highlighted and flash.
• S (2 sec) - to step back to the Setup Menu without saving the setting.
• A (< 2 sec) - to step upward through the % Dim set points from 10 through 60% in increments of 10% one at a time.
• M (< 2 sec) - to step back through the % set points one at a time.
• S (< 2 sec) - to save the setting,
which is to become solid with the highlight removed, and revert to the Home Setup Menu
with the Set Auto Dim selection highlighted allowing other operations
.
• S (2 sec) - to step back to Set Time without saving the setting.
SET DATE, TIME MENU, selections with the last settings saved include Fig. 17):
> DATE FORMAT = with M.D (for Month.Day) or D.M (for Day.Month).
> DATE = with Month.Day.Year or Day.Month.Year, based on the Date Format.
Set Year, then Month, then Day.
.
> HOUR FORMAT = with 12 (12: Am to 11: Pm) or 24 ( 0: to 23:).
> TIME = with hr:min (12:01 A to 11:59 P, if 12 Hour Format; or 0:01 to 23:59, if 24 Hour Format).
Set Year, then Minute.
• A (< 2 sec) - to step forward (down) through selections.
• M (< 2 sec) - to step back (up) through selections.
• S (< 2 sec), when a selection is highlighted - to highlight and flash that item's set point (see below).
• A (< 2 sec) - to toggle or increase set points one at a time.
• A (hold) - to increase set points at a rate of 8 per second.
• M (< 2 sec) - to toggle or decrease set points one at a time.
• S (< 2 sec) - to save the setting which becomes solid, with the selection flashing.
• S (2 sec) - to revert to the Setup Menu.
BATTERY/TMT (TRANSMITTER) STATUS, information includes (Fig. 18):
Also refer to page 8.
> A300 CS = BATT GOOD (or LOW)
> TMT 1 = BATT GOOD (or LOW), or NOT AVAIL, or OFF
> TMT 2 = BATT GOOD (or LOW), or NOT AVAIL, or OFF
> TMT 3 = BATT GOOD (or LOW), or NOT AVAIL, or OFF
> TMT 4 = BATT GOOD (or LOW), or NOT AVAIL, or OFF
GOOD (green) means that battery power is acceptable (=> 2.75 volts).
LOW (yellow) means that the battery should be charged (< 2.75 volts, warning level).
LOW (red, flashing) means that the battery must be charged prior to further operations (< 2.50 volts, alarm level).
NOT AVAIL means that the A300 CS' receiver is not receiving that Transmitter's signal.
OFF means that the Transmitter has not been selected for use.
• S (2 sec) - to revert to the Setup Menu.
• 10 sec - revert to the Setup Menu if S is not pressed.
DATE FORMAT = M.D
HOUR FORMAT = 12
DATE = 1.27.14
SET DATE, TIME
TIME = 10:38 A
Fig. 17 - SET DATE, TIME
MENU
Fig. 18 - BATTERY/TMT
STATUS
BATT, TMT STATUS
A300 CS =
TMT 1 =
TMT 2 =
TMT 3 =
TMT 4 =
BATT GOOD
NOT AVAIL
BAT T LO W
OFF
BATT GOOD
Fig. 16A - SET AUTO DIM
Fig. 16B - SET AUTO DIM

14
A300 CS OPERATING MANUAL
© 2002 Design, 2014 Doc. No. 12-7287-r03 (7/14/14)
BLUETOOTH
The A300 CS contains a Bluetooth module that can be paired with a PC, Mac, or mobile device.
Bluetooth is initialized while the selection is highlighted on the Home Setup Menu (by S < 2 sec).
A Please Wait screen (Fig. 19A) will be displayed for 5 seconds followed by a screen displaying a countdown from 120 to 0
seconds (Fig. 19B).
If Bluetooth fails to initialize, a message will be displayed for 3 seconds instead of the countdown (Fig. 19C), then operation will
revert to the Home Setup Menu.
During the countdown, the unit is on allowing it to be paired with other Bluetooth devices.
> Mobile devices require Diverlog for Mac software that contains files required to discover and communicate with the Bluetooth
chip in the A300 CS. Likewise, laptops and desktops are only able to discover the A300 CS through Diverlog for Mac or
the AERIS Computer Interface program for PCs with the use of an optional dongle.
> Once paired, a connected message is displayed (Fig. 19D) with the signal icons <<<< changing from white to green while
the Download, Upload, or Firmware Update operation is started.
> Once the A300 CS is unpaired from the PC, Mac, or mobile device, it will be necessary to pair/connect it through the
software before every download/upload.
> Pairing/connecting is not permanent and needs to be reestablished every time.
> This connection functions the same way the USB does in the Diverlog and ACI programs.
> If the 2 minute countdown elapses without action, operation will revert to the Home Setup Menu and the connection request
of the ACI, Diverlog, or iPhone/iPad version software will be cancelled.
> If the connection is cut using the software, operation will revert to the Home Setup Menu.
While downloading data, uploading settings, and updating firmware, corresponding screens are displayed indicating action in
progress (Fig. 19E, 19F, 19G).
---------------------------------------------------------------------------------------------------------------------------
---------------------------------------------------------------------------------------------------------------------------
Fig. 19A - BLUETOOTH
(initializing)
Fig. 19B - BLUETOOTH
(countdown for pairing)
PLEASE WAIT...
DC P C
119 SECONDS
DC P C
WAIT WHILE
B L UE T O OT H
DEACTIVATES
Fig. 19C - BLUETOOTH
(failed to initialize)
CONNECTED
DC P C
DOWNLOADING
DC P C
UPLOADING
DC P C
UPDATING FIRMWARE
WAIT FOR PC MESSAGE
DC P C
Fig. 19D - BLUETOOTH
(ready to start operation)
Fig. 19E - BLUETOOTH
(in progress)
Fig. 19F - BLUETOOTH
(in progress)
Fig. 18G - BLUETOOTH
(failed to initialize)

15
A300 CS OPERATING MANUAL
© 2002 Design, 2014 Doc. No. 12-7287-r03 (7/14/14)
LOG MODE (NORM/GAUG)
Information from the latest 24 NORM and/or GAUG dives is stored for viewing. After exceeding 24 dives, the most recent dive
is stored while the oldest is deleted.
> Dives are numbered from 1 to 24 starting each time NORM (or GAUG) mode is activated. After 24 hours elapse with no
dive, the first dive of the next period of operation is #1.
> 10 minutes after a dive, the Log screens for all dives stored can be viewed.
If a dive’s elapsed time (EDT) exceeds 9:59 (hr:min), data at the 9:59 interval is recorded in the Log upon surfacing of the unit.
Screen sequence = Log Entry Finder (index) >> Data 1 >> Data 2 >> Data 3.
Prior to any dives being recorded (new unit out of the box), the graphics NONE YET are displayed (Fig. 20A) on the Log Entry
Finder screen when the Log Mode is accessed from the Home Menu by S (< 2 sec).
• S (2 sec) - to revert to the Home Menu.
Log Entry Finder, information includes 3 columns (Fig. 20B):
> Entry number - 1 to 99, most recent first (at top).
> Date of the dive.
> Dive # for that day, or that series of repetitive dives.
The down arrow on the scroll bar at the right will be green if additional entries are listed going down and grey if there are
no more entries. The up arrow will be green if additional entries are listed going up and grey if there are no more entries.
• A (hold) - to scroll forward (down) through the listing at a rate of 8 entries per second.
• A (< 2 sec) - to step forward (down) through the listing.
• M (< 2 sec) - to step back (up) through the listing.
• S (< 2 sec) - to access that dive's Log Data 1 screen (for the dive highlighted).
• S (2 sec) - to revert to Home Menu.
Log Data 1, information includes (Fig. 20C, 20D):
> Log Entry # (the # shown in the screen title matches the dive selected from the Finder listing).
> TYPE = NO DECO (or DECO, or VIOLA, or GAUG).
> ELEV = SEA (or EL 2 to EL 7). Altitude level of the dive.
> PRE DIVE SI = hr:min. Surface Interval time before the dive.
> START TIME = hr:min.
> DIVE TIME = hr:min. Elapsed time of the dive.
> MAX DEPTH = xxx FT (or xx.x M). Maximum recorded during that dive.
> MIN TEMP = xx F (or C). Minimum recorded during that dive.
• S (< 2 sec) - to access that dive's Log Data 2 screen.
• S (2 sec) - to step back to the Finder screen with that dive highlighted.
Log Data 2, information includes (Fig. 20E, 20F):
> Log Entry # (the # shown in the screen title matches the dive selected from the Finder listing).
> LAST GAS = AIR; or FO2, PO2 Alarm settings. For the last gas used during that dive. Blank if a GAUG dive.
> AV DEPTH = xxx FT (or xx.x M). Average for that dive.
> AV TEMP = xx F (or C). Average for that dive.
> START = xxxx PSI (or xxx BAR). Tank 1 pressure when the dive started.
> END = xxxx PSI (or xxx BAR). Pressure of the tank in use when the dive ended.
> MAX PO2 = x.xx. Highest level reached during that dive. Blank if an Air or GAUG dive.
> O2SAT = xx%. Level of O2 saturation when the dive ended. Blank if an Air or GAUG dive.
• S (< 2 sec) - to revert to the Finder screen with that dive highlighted.
• S (2 sec) - to step back to that dive's Log Data 1 screen.
HISTORY MODE (NORM/GAUG), information includes (Fig. 21):
History is a summary of data recorded during all NORM and GAUG dives conducted.
> TOTAL DIVES = xxxx (up to 9999)
.
> TOTAL HOURS = xxxx (up to 9999).
> MAX DEPTH = xxx FT (or xx.x M). Deepest depth of any dive, down to 330 FT (100 M).
> MAX EDT = x:xx (hr:min). Longest time of any dive, up to 9:59 (hr:min).
> MAX ELEV = SEA (or EL 2 to EL 7). Highest altitude level of any dive.
> LOW TEMP = xx F (or C). Lowest recorded during any dive.
• S (2 sec) - to step back to the Home Menu.
Fig. 20B - LOG FINDER
(locate dives by entry & date)
LOG ENTRY FINDER
2 -- 4.9.14 #2
--
9 8 -- 10.29.13 #2 1
9 7 -- 10.28.13 #2 0
9 6 -- 10.28.13 #1 9
9 9 -- 10.29.13 #2 2
----
1 -- 4.9.14 #1
--
9 5 -- 10.27.13 #1 8
T YP E = NO DECO
LOG ENTRY 21 - DATA 1
START TIME =
ELEV =
PRE DIVE SI =
MIN TEMP =
DIVE TIME =
MAX DEPTH =
SEA
1:28
10:24 AM
0:48
108 FT
59 F
LAST GAS = 80%, 1.60
START =
MAX P O 2 =
O2SAT =
AV TEMP =
END =
AV DEPTH =
1.02
23%
3000 PSI
320 PSI
56 FT
60 F
LOG ENTRY 21 - DATA 2
Fig. 20C - LOG DATA 1
(NORM Dive)
Fig. 20E - LOG DATA 2
(NORM Dive)
TOTAL DIVES =
TOTAL HOURS =
MAX DEPTH =
MAX EDT =
MAX ELEV =
HISTORY
49
LOW TEMP =
38
139 FT
1:16
EL2
49 F
Fig. 21 - HISTORY MODE
(cumulative summary)
LOG ENTRY FINDER
NONE
YET
Fig. 20A - LOG MODE
(no dives recorded yet)
T YP E = G AU G
LOG ENTRY 99 - DATA 1
START TIME =
ELEV =
PRE DIVE SI =
MIN TEMP =
DIVE TIME =
MAX DEPTH =
EL2
0:54
7:38 AM
1:06
213 FT
48 F
START =
AV TEMP =
END =
AV DEPTH =
3000 PSI
320 PSI
56 FT
60 F
LOG ENTRY 99 - DATA 2
Fig. 20D - LOG DATA 1
(GAUG Dived)
Fig. 20F - LOG DATA 2
(Air or GAUG Dive)

16
A300 CS OPERATING MANUAL
© 2002 Design, 2014 Doc. No. 12-7287-r03 (7/14/14)
NORM
SURFACE MODE

17
A300 CS OPERATING MANUAL
© 2002 Design, 2014 Doc. No. 12-7287-r03 (7/14/14)
G AS 1 A R
SP I
1
T
79 9 - -
- --
NDC
SURF 0 : 0 4
BATT
20%
ADJUST BRIGHTNESS
NORM SURFACE MODE
Upon access to NORM mode, the Surface Main screen will be displayed during which time the unit will enter Dive Mode upon
descent to 5 FT (1.5 M) for 5 seconds.
If 2 minutes elapse with no button action, operation will enter Power Saver Mode turning the screen off until a button is pressed.
The unit will enter Post Dive Surface Mode upon ascent to 2 FT (0.6 M) for 1 second and display the Surface Main with the SURF
icon flashing.
Access to Alternate screens is allowed during the first 10 minutes with access to other surface modes/screens blocked until
10 minutes elapse.
Exception is for Violations.
When the 10 minute post dive surface Interval time has elapsed, access to other Surface modes/screens is allowed.
NORM SURF MAIN, information includes (Fig. 22A/B):
> BATT icon - green (if battery voltage is good), or yellow (if at warning level), or red (if at alarm level).
> Surface Interval Time (hr:min, colon flashing), with SURF icon (flashing during the first 10 minutes after surfacing).
> CF icon, if the Conservative Factor is set On.
> Graphic NORM (or 3 dashes - : - - with NDC icon during the first 10 minutes after surfacing).
> Graphic GAS 1 (start Gas & default 10 minutes after a dive), Gas in use during the first 10 minutes after surfacing.
> Tank 1 Pressure with PSI (or BAR) icon (start TMT & default TMT 10 minutes after a dive), graphic SPG (meaning Submers-
ible Pressure Gauge) if no TMT is in use; TMT in use during first 10 min after surfacing.
> Graphic DIVE with number of that dive (up to 24), 0 if no dive yet (or 2 dashes - - with ATR icon during the first 10 minutes
after surfacing).
> TLBG, if any after a NORM or FREE dive.
• A (2 sec) - to access the Adjust Brightness screen.
• A (< 2 sec) - to access NORM SURF ALT 1.
• M (2 sec) - to revert to the Home Menu.
• M (< 2 sec) - to access the NORM Menu.
• S (2 sec) - to access the Compass OP Main.
ADJUST BRIGHTNESS, information includes (Fig. 23):
> xx % (last value saved). Up to 60% max when Low Battery Warning or Alarm.
• S (2 sec) - to step back to the SURF MAIN without changing the value.
• A (< 2 sec) - to step upward through values of 10% to 100% one at a time in increments of 10%.
• M (< 2 sec) - to step down through values one at a time.
• S (< 2 sec) - to save the % setting and revert to the SURF MAIN.
NORM SURF ALT 1, information includes (Fig. 24):
> LAST DIVE (screen title).
> xxx FT (or xx.x M) with graphic MAX DEPTH.
> Elapsed Dive Time (hr:min, up to 9:59) with graphic EDT.
• A (< 2 sec) - to access SURF ALT 2.
• M (< 2 sec) - to step back to the SURF MAIN.
• 10 sec with no button action, revert to the SURF MAIN.
NORM SURF ALT 2, information includes (Fig. 25):
> DATE = m.d.y (or d.m.y).
> TIME = hr:min with AM (or PM) if 12 Hour Format.
> TEMP = xx F (or C).
> ELEV = SEA (or EL2 to EL7).
> FLY = hr:min*
> DESAT = hr:min**
> O2 SAT = xx%.
> GAS 1 = AIR; or xx%, x.xx (FO2, PO2 set).
• A (< 2 sec) - to revert to SURF MAIN.
• M (< 2 sec) - to step back to SURF ALT 1.
• 10 sec with no button action, revert to SURF MAIN.
*The Time to Fly counter will begin counting down from 23:50 to 0:00 (hr:min) 10 minutes after surfacing from any dive.
**The Time to Desaturate counter provides calculated time for Tissue Desatuation at sea level taking into consideration the
Conservation Factor setting. It will begin counting down 10 minutes after surfacing from a NORM or FREE dive, counting
down from a maximum of 23:50 to 0:00 (hr:min).
Desaturation requiring times greater than 24 hours will display the graphic > 24:00. In the event that Time to Desaturate
still remains at the end of 24 hours, the unit will turn Off and any Ni-O2 calculations will clear.
Fig. 23 - BRIGHTNESS
CONTROL
Fig. 22A - NORM SURF MAIN
(2 hours after dive 3)
Fig. 24 - NORM SURF ALT 1
Fig. 25 - NORM SURF ALT 2
NORM
GAS 1 DIVE
PSI
850 3
SURF 2:48
TL
BATT
LAST DIVE
DIVE TIME =
MAX DEPTH =
0:49
120 FT
TIME =
TEMP =
SHORTCUT
O2 SAT =
GAS 1 =
FLY =
DESAT =
DATE =
ELEV =
9.25.13
7:45 AM
83 F
SEA
36%
32%, 1.40
7:28
1:06
Fig. 22B - NORM SURF MAIN
(< 10 min after surfacing)

18
A300 CS OPERATING MANUAL
© 2002 Design, 2014 Doc. No. 12-7287-r03 (7/14/14)
NORM MENU, information includes (Fig. 26):
> PLAN - to view a sequence of allowed depths with no deco times.
> SET GAS - to access a menu for setting FO2 and PO2 alarms for each gas.
> SET TMTS - to access a menu for setting transmitters.
> SET ALARMS - to access a menu for setting dive alarms.
> SET UTILITIES - to access a menu for setting dive related functions such as algorithm, stops, etc.
> SET PREVIEW - to access a menu for selecting dive related settings to be viewed together.
> VIEW PREVIEW - to view items selected.
• A (< 2 sec) - to step forward (down screen) through Menu selections (the active item highlighted).
• M (< 2 sec) - to step back (up screen) through Menu selections.
• S (< 2 sec) - to access the selection that is highlighted.
• M or S (2 sec) - to step back from the Menu to the NORM SURF MAIN.
• M (2 sec) - to exit the Menu system and revert to the NORM SURF MAIN.
• No button action (for 2 min) - will exit the Menu system and revert to the NORM SURF MAIN.
NORM PLAN MODE
No Deco time Limits (NDLs) and O2 time Limits (OTLs) in Plan Mode are based on the Algorithm selected (DSAT or Z+), the FO2
set for Gas 1, and residual nitrogen (or O2) remaining from previous NORM (or FREE) dives. FO2 set for other Gases are not
used for Plan calculations.
PDPS (Pre Dive Planning Sequence)
Plan screens will sequence through Depths from 30 to 190 FT (9 to 57 M), or the Max Depth that will allow theoretical No Deco
Dive Time of at least 1 minute based upon the previous dive profiles in a series of repetitive dives and taking into account descent
and ascent rates of 60 FPM (18 MPM).
When the Conservative Factor is set On, NDLs are reduced to the values of the next 3,000 foot (915 meter) higher Altitude.
Refer to tables in back.
PLAN GAS 1, information includes (Fig. 27A/B):
> Graphic AIR; or xx%, x.xx - xxx FT (or M) [FO2, PO2 set with the Max Depth allowed for the PO2 alarm value set].
> Plan Depth value with FT (or M) icon.
> Dive Time allowed (hr:min) with graphic NDL (or OTL if O2 control).
• A (hold) - to scroll 8/sec (down screen) through the available Plan Depths from 30 to 190 FT (9 to 57 M) in increments of
10 FT (3 M) highlighting the information one line at a time.
The down arrow on the scroll bar at the right will be green if other deeper depths will be listed when going down and grey
if there is no other depth listed below. The up arrow on the scroll bar will be green if other shallower depths will be listed
when going up and grey if there is no other depth listed above.
• A (< 2 sec) - to step forward (down) through the Plan Depths one at a time.
• M (< 2 sec) - to step back (up) through the Plan Depths one at a time.
• S (< 2 sec) - to exit the PDPS and revert to the Main Menu.
The PDPS will step/scroll to the Max Depth that will allow a theoretical No Deco time of at least 1 minute based upon previ-
ous dive profiles in a series of repetitive dives.
Once a dive is conducted, the algorithm selected will lock into that selection until 24 hours elapse on the surface after the
dive, or all residual nitrogen has been offgassed (DSAT time = 0:00).
SET GAS MENU (NORM), information includes (Fig. 28A):
Selections with their last set points saved include:
> GAS 1 = with AIR; or 21 to 100% and 1.xx (PO2 alarm setting).
> GAS 2 = with OFF; or AIR; or 21 to 100% and 1.xx (PO2 alarm setting).
> GAS 3 = with OFF; or AIR; or 21 to 100% and 1.xx (PO2 alarm setting).
> GAS 4 = with OFF; or AIR; or 21 to 100% and 1.xx (PO2 alarm setting).
> DEFAULT = with OFF; or ON, 50%.
• A (< 2 sec) - to step forward (down screen) through and highlight Menu selections.
• M (< 2 sec) - to step back (up screen) through Menu selections.
• S (< 2 sec), when a selection is highlighted - to highlight & flash* that item’s set point.
*During the time that a numeric FO2 value is flashing, the Max Depth allowed for the PO2 alarm value shown is displayed at the bottom.
FO2 set for AIR:
> The default FO2 for Gas 1 each new activation period is AIR.
> When FO2 for Gas 1 is set for AIR -
> calculations are the same as when it is set for 21% O2.
> it remains set for AIR until it is set for a Nitrox (21 to 100% O2).
> O2SAT and PO2 values and/or warnings will not be displayed at any time, on the surface or during dives.
> Max Depths allowed by the PO2 alarm set will not be displayed.
Fig. 26 - NORM MENU
Fig. 27A - PDPS
(Gas 1 set for Air)
Fig. 27B - PDPS
(Gas 1 set for Nitrox)
NORM MENU
P L A N
SET T MT S
SET PREVIEW
VIEW PREVIEW
SET GAS
SET UTILITIES
SET ALARMS
PLAN GAS 1
30 FT 9:55 NDL
40 FT 4:22 NDL
50 FT 2:28 NDL
60 FT 1:32 NDL
80 FT 0:49 NDL
32%, 1.40 111FTMAX
-
70 FT 1:05 NDL
PLAN GAS 1
30 FT 4:20 NDL
40 FT 2:17 NDL
50 FT 1:21 NDL
60 FT 0:57 NDL
80 FT 0:30 NDL
AIR
70 FT 0:40 NDL
Fig. 28A - SET GAS MENU
(Gas 2 selected)
SET GAS MENU
GAS 1 =
21% , 1.40
GAS 2 =
GAS 3 =
GAS 4 =
AIR
32% , 1.40
OFF
DEFAU LT = ON , 50%
MAX DEPTH = 124 FT

19
A300 CS OPERATING MANUAL
© 2002 Design, 2014 Doc. No. 12-7287-r03 (7/14/14)
> Internally, the unit will keep track of the oxygen accumulation so that if FO2 for Gas 1 is subsequently set for Nitrox, the
oxygen accumulated during previous AIR dives will be accounted for in the next Nitrox dive (during that dive period and
series of repetitive dives).
FO2 set for Nitrox:
> When FO2 for any Gas is set for Nitrox (21 to 100%), the dive is calculated to be for Nitrox. The Nx icon will be dis-
played on all applicable screens.
> Once FO2 for Gas 1 is set for Nitrox (21 to 100%), the AIR option for all gases is disabled until 24 hours elapse after the
last dive.
> The AIR option will not be displayed in Set Gas until a full 24 hour Surface Interval has elapsed.
FO2 50% Default:
> When set ON and FO2 Gas 1 is set for Nitrox (21 to 100%), 10 minutes on the surface after that dive the FO2 for Gas 1
will be displayed as 50% and further dives will be calculated based on 50% O2 for oxygen calculations and 21% O2 for
Nitrogen calculations (79% Nitrogen), unless the FO2 for Gas 1 is changed before the dive.
> FO2 Gas 1 will continue to reset to the 50% Default after subsequent repetitive dives until 24 hours elapse after the last
dive, or the Default selection is set OFF.
> When the Default is set OFF, FO2 for Gas 1 will remain set at the last set point entered during that period of activation.
> If the Default is set OFF, FO2 for all gases will remain at their respective set points until changed.
> If the Default is set ON, FO2 for all gases default to 50%.
When the FO2 digits are highlighted & flashing (Fig. 28B):
• A (< 2 sec) - to step up through FO2 set points one at a time from AIR to 21 to 100% in increments of 1%.
• A (hold) - to scroll upward through the FO2 set points at a rate of 8 per second stopping momentarily at 32%, 50%, 80%,
and 100%, then at AIR or 21%.
• M (< 2 sec) - to step down through FO2 set points one at a time.
• S (< 2 sec) - to save the FO2 setting and highlight & flash the PO2 digits if Nitrox, or move to GAS 2 if AIR.
• S (2 sec) - to step back to & highlight the GAS # selected without changing the FO2 setting.
When the PO2 alarm digits are highlighted & flashing (Fig. 28C):
• A (< 2 sec) - to step up through the set points one at a time from 1.00 to 1.60 in increments of 0.05.
• M (< 2 sec) - to step down through the set points one at a time.
• S (< 2 sec) - to save the PO2 Alarm setting and step back to & highlight the GAS # selected.
• S (2 sec) - to step back to & highlight the FO2 value without changing the PO2 setting.
When the FO2 50% Default digits are highlighted & flashing:
• A or M (< 2 sec) - to toggle between OFF and ON 50%.
• S (< 2 sec) - to save the setting and step back to & highlight the graphic DEFAULT.
• S (2 sec) - to step back to & highlight the graphic DEFAULT without changing the setting.
SET TMT MENU (NORM, GAUG), information includes (Fig. 29A):
Selections with their last set points saved include (SET will not be displayed upon access):
> TMT 1 = with OFF or ON.
> TMT 2 = with OFF or ON.
> TMT 3 = with OFF or ON.
> TMT 4 = with OFF or ON.
• A (< 2 sec) - to step forward (down screen) through and highlight Menu selections.
• M (< 2 sec) - to step back (up screen) through Menu selections.
• S (< 2 sec), when a selection is highlighted - to highlight & flash that item’s set point.
• A (< 2 sec) - to step forward through that TMT’s set points (OFF, ON, & SET).
• M (< 2 sec) to step back through that TMT’s set points.
• S (< 2 sec) - to save the setting.
> If OFF is selected (saved), the A300 CS’s receiver will be disabled, all other TMT set selections will display the graphic
OFF, and operation will revert to the Set Utilities Menu.
> If ON is selected, ON becomes solid and the next TMT ON/OFF set point will flash, allowing it to be set.
> If SET is selected, the Set TMT Link Code screen will be displayed.
Set TMT Link Code (Serial Number), information includes (Fig. 29B):
> Graphics TMT 1 (2, 3, 4) SERIAL NUMBER.
> 6 digit serial number, the 1st (left) digit flashing.
• A (< 2 sec) - to step upward through the 1st digit’s values.
• M (< 2 sec) - to step back through the 1st digit’s values.
• S (< 2 sec) - to save the 1st digit’s value and flash the 2nd digit.
•
Repeat A, M, S button action until all digits are set with operation then reverting to the Set TMT Menu with SET highlighted
allowing OFF or ON to be selected.
Fig. 29B - SET LINK CODE
Fig. 29A - TMT SET MENU
Fig. 28C - SET GAS MENU
(setting Gas 2 PO2 Alarm)
SET GAS MENU
GAS 1 =
32% , 1.40
GAS 2 =
GAS 3 =
GAS 4 =
AIR
50% , 1.40
OFF
DEFAU LT = ON , 50%
MAX DEPTH = 124 FT
SET GAS MENU
GAS 1 =
32% , 1.40
GAS 2 =
GAS 3 =
GAS 4 =
AIR
50% , 1.40
OFF
DEFAU LT = ON , 50%
MAX DEPTH = 124 FT
Fig. 28B - SET GAS MENU
(setting Gas 2 FO2)
SET TMT MENU
TMT 1 =
TMT 2 =
TMT 3 =
TMT 4 =
ON
OFF
OFF
S E T
SET TMT LINK CODE
SERIAL NUMBER
039956
TMT 2

20
A300 CS OPERATING MANUAL
© 2002 Design, 2014 Doc. No. 12-7287-r03 (7/14/14)
SET ALARMS MENU (NORM), information includes (Fig. 30):
Selections with their last Set points saved include:
> AUDIBLE = with ON or OFF.
> DEPTH = with OFF, or 30 to 330 FT (or 10 to 100 M), increments of 10 FT (3 M).
> EDT = with OFF, or 0:10 to 3:00 (hr:min), increments of :05. EDT is Elapsed Dive Time.
> TLBG = with 1 to 8 SEG, increments of 1 SEG. SEG means Segments of the bar graph
> DTR = with OFF, or 1 to 0:20 ( :min), increments of :01. DTR is Dive Time Remaining.
> TURN = with OFF, or 1000 to 3000 PSI (or 70 to 205 BAR), increments of 250 PSI (5 BAR). TURN is pressure of TMT 1.
> END = with 300 to 1500 PSI (or 20 to 105 BAR), increments of 100 PSI (5 BAR). END is pressure of the TMT in use.
• A (< 2 sec) - to step forward (down screen) through and highlight Menu selections.
• M (< 2 sec) - to step back (up screen) through Menu selections.
• S (< 2 sec), when a selection is highlighted - to highlight & flash that item’s set point.
• A (< 2 sec) - to toggle or increase the set point.
• A (hold) - to increase the set point at a rate of 8 per second.
• M (< 2 sec) - to toggle or decrease the set point.
• S (< 2 sec) - to save the setting and revert to the Set Alarms Menu.
SET UTILITIES MENU (NORM), information includes (Fig. 31A):
Selections with their last Set points saved include:
> WATER = with FRESH or SEA.
This adjusts depth values based on the type of water
.
> UNITS = with IMPERIAL or METRIC.
> DEEP STOP = with OFF or ON.
This only applies to No Deco dives
.
> SAFE STOP = with OFF, ON, or TIMER.
This only applies to No Deco dives
.
> ALGORITHM = with DSAT or Z+.
This determines the basis for Ni-O2 calculations
.
> CONSERV = with OFF or ON.
This, Conservative Factor, reduces NDLs based on altitude level
.
> SAMPLING = with 2, 15, 30, or 60 SEC (second).
This is the rate that data is sampoled and recorded for PC download
.
Additional information relating to the effects of the items included are described in associated sections throughout this manual.
• A (< 2 sec) - to step forward (down screen) through and highlight Menu selections.
• M (< 2 sec) - to step back (up screen) through Menu selections.
• S (< 2 sec), when a selection is highlighted - to highlight & flash that item’s set point.
• A (< 2 sec) - to toggle or increase the set point.
• A (hold) - to increase the set point at a rate of 8 per second.
• M (< 2 sec) - to toggle or decrease the set point.
• S (< 2 sec) - to save the setting and revert to the Set Utilities Menu.
Set Safety Stop
In addition to OFF, ON, and TIMER; Safe Stop has a SET selection
.
• S (< 2 sec), while SET is flashing - will display the Set Safe Stop Time/Depth screen with the Time setting flashing (Fig. 31B).
• A or M (< 2 sec) - to toggle TIME between 3 MIN and 5 MIN.
• S (< 2 sec) - to save the Time setting and flash the Depth digits.
• A (< 2 sec) - to step upward through Depth set points of 10, 15, 20 FT (or 3, 4, 5, 6 M).
• M (< 2 sec) - to step back through Depth set points.
• S (< 2 sec) - to save the setting and revert to the Set Utilities Menu with SET highlighted & flashing allowing OFF, ON, or
TIMER to be selected/saved (as described above).
SET PREVIEW (NORM), information includes (Fig. 32):
Using this listing, you can chose up to 7 items (set points that have been entered) for display on a Preview screen that can be ac-
cessed from the NORM Menu (see page 16).
> FO2, PO2 alarms set for - Gas 1, 2, 3, 4.
> Alarm values set for - Depth, EDT, DTR, TLBG, Turn Pressure, End Pressure.
> Water Type selected
.
> Deep Stop seting
.
> Safety Stop setting
.
• A (< 2 sec) - to step forward (down 1st column then 2nd) through & highlight selections.
• M (< 2 sec) - to step back (up) through selections.
• S (< 2 sec) - when an item is highlighted will toggle* it between solid and flashing.
*Once 7 items are highlighted/flashing, another item cannot be toggled to be highlighted/flashing until one of the
highlighted/flashing items is toggled to solid, not highlighted first.
When satisfied that those items flashing (up to 4) are what you want for the Preview screen, press S (2 sec) to display all
items flashing, then press S (< 2 sec) to revert to the Menu with SET PREVIEW highlighted.
NORM SET ALARMS
AUDIBLE =
EDT =
TLBG =
DTR =
TURN =
END =
DEPTH =
ON
130 FT
0:40
8 SEG
0:10
1500 PSI
300 PSI
Fig. 30 - SET ALARMS
NORM SET UTILITIES
WATER =
DEEP STOP =
SAFE STOP =
ALGORITHM =
CONSERV =
SAMPLING =
UNITS =
TIMER
FRESH
IMPERIAL
OFF
DSAT
ON
15 SEC
Fig. 31A - SET UTILITIES
SET SAFE STOP
TIME = 3 MIN
DEPTH = 15 FT
Fig. 31B - SET NO DECO
SAFETY STOP
GAS 1
GAS 2
GAS 3
GAS 4
DEPTH AL
TLBG AL
TURN AL
END AL
WAT ER
DEEP STOP
SAFE STOP
EDT AL
DTR AL
NORM SET PREVIEW
Fig. 32 - SET PREVIEW
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