DECOMPRESSION MODEL The programs within the A300 and A300 XT 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.
GAUG mode is for those using the units as digital gauges with no Ni-O2 calculations. FREE mode (A300 only) is for those using the unit for breath hold activities without scuba. ACTIVATION & DIAGNOSTICS A momentary press/release of any button will activate the unit.
Interface Cable. The software program together with the USB Driver required is on the ACI (AERIS Computer Interface) CD, and can be downloaded from the AERIS web site. The program's HELP** serves as the user manual which can be printed for personal use.
• Making a descent during the first 10 minutes after surfacing from a NORM, TECH, or GAUG dive is a continuation of that dive; or the first minute after surfacing from a FREE dive (A300 only). • A descent made after the 10 minute (or 1 minute) interval has elapsed is then considered a new dive.
A300/A300 XT OPERATING MANUAL NORM/TECH SURFACE MODE The SURF MAIN screen of the mode selected will remain on display for 10 minutes during which time the unit will enter that type Dive Mode upon descent to 5 FT (1.5 M) for 5 seconds.
A300/A300 XT OPERATING MANUAL NORM/TECH SURF ALT 3 (only if Nitrox, no screen if Air), information includes (Fig. 11): > Current O2% saturation with icon. > Current FO2 set for Gas 1 with FO2, Gas 1, & NX icons. > Current PO2 alarm value set for Gas 1 with icon, fixed at 1.40 if NORM.
A300/A300 XT OPERATING MANUAL PDPS, information includes (Fig. 15, 16): > Z+ (or DSAT), CF, NX icons, if they apply. > Plan Depth value with FT (or M) icon. > FO2 set for Gas 1 (xx%) with FO2 icon if Nitrox, blank if Air.
A300/A300 XT OPERATING MANUAL Log Data 3, information includes (Fig. 21): > Z+ (or DSAT), CF, DS, NX icons, if they apply. > Max Depth with FT (or M) and MAX icons. > Elapsed Dive Time (hr:min) with wave/clock (EDT) icon.
Alarm which can be set from 1.00 to 1.60 with a Warning fixed at 0.20 less. There is no FO2 50% Default setting like previous AERIS Nitrox dive computers. Until a dive is conducted, FO2 for NORM and TECH remain at the values set for that mode (even if the mode is changed). When the unit shuts off, the settings revert to Air (the default for all gasses).
• 2 minutes, or M (2 sec), revert to Main. SET DEPTH ALARM, information includes (Fig. 32): This feature is not the same as the Delayed Violation depth alarm, or the FREE depth alarms (A300), described later. > SET icon.
A300/A300 XT OPERATING MANUAL SET EDT ALARM, information includes (Fig. 33): > SET icon. > Graphic OFF (or ON) flashing, with Time value (hr:min) last set with wave/clock icon solid. • A (< 2 sec) to step through the selections OFF, ON, and SET.
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A300/A300 XT OPERATING MANUAL SET WATER TYPE (TECH only), information includes (Fig. 37): > Graphic H2O with SET icon. > Graphic FRESH (or SEA) flashing. • A or M (< 2 sec) to toggle between FRESH and SEA.
When Z+ is selected, Ni-O2 related calculations are based on the Pelagic Z+ algorithm. When DSAT is selected, the calculations are based on the standard Pelagic DSAT algorithm. The selection locks in for 24 hours after surfacing from a NORM, TECH, or FREE (A300) dive. SET CONSERVATIVE FACTOR (TECH only), information is to include (Fig. 44): > Graphic CONS with SET and CF icons.
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A300/A300 XT OPERATING MANUAL SET DATE FORMAT, information is to include (Fig. 48): Date Format is used to establish the position on the screen of Month (M) relative to Day (D), which one is displayed on the left and which one on the right.
A300/A300 XT OPERATING MANUAL HISTORY MODE History is a summary of data recorded during all NORM, TECH, and GAUG dives conducted. If no dives have been recorded, the graphics NONE YET will be displayed upon accessing screen 1, other screens will not be available.
Plan and DTR (Dive Time Remaining). The selection will lock in for 24 hours after the dive. You can select DSAT or Z+. DSAT has been the standard used by AERIS in all of its dive computers until this time. It features NDLs that are based on Fig. 58 - ASCENT TOO FAST exposures and test data which also formed validation for the PADI RDP.
As you ascend, the TLBG segments 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.
A300/A300 XT OPERATING MANUAL O2 Time Remaining (OTR) During Nitrox operation, O2 accumulation during a dive, or 24 hour period, is displayed on an Alternate screen as a percent of O2 saturation allowed per dive or per day (Fig. 60a). Max allowed is 300 OTU (= 100%).
A300/A300 XT OPERATING MANUAL NO DECO MAIN, information includes (Fig. 62) - > Z+ (or DSAT) icon, algorithm selected. > CF icon, if set On (TECH only). > Current Depth with FT (or M) icon. > DTR (hr:min) with wave/clock/profile (NDC) icon.
A300/A300 XT OPERATING MANUAL DS ALTs, information - #1 >> is similar to No Deco Main. #2 >> is similar to No Deco ALT 1. #3 >> is similar to No Deco ALT 2. #4 >> is similar to No Deco ALT 3.
A300/A300 XT OPERATING MANUAL DECO STOP MAIN, information includes (Fig. 71) - > Z+ (or DSAT) icon, algorithm selected. > CF icon, if set On. > Current Depth with FT (or M) icon. > Stop Depth with FT (or M) icon.
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TLBG will also flash, and Current Depth and Max Depth will only indicate 3 dashes ( - - - ). **MOD is the Max Operating Depth at which the A300 AI can accurately perform calculations and display data.
A300/A300 XT OPERATING MANUAL VGM Main, information includes (Fig. 81) - > Current Depth with FT (or M) icon. > Graphics UP VIO with Up Arrow icon, flashing until on surface. > VARI, while ascending. • A (< 2 sec) to access ALT 1.
A300/A300 XT OPERATING MANUAL HIGH O2 Warning >> at 80 to 99% (240 OTU). Alarm >> at 100% (300 OTU). When O2 reaches the Warning level, the Audible will sound during which the O2 value with O2% icon will flash in place of Depth (Fig.
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A300/A300 XT OPERATING MANUAL OVERVIEW > Can only switch when a Dive Main screen is displayed. > Cannot switch on surface. > Cannot switch during sounding of alarms. > All dives begin with Gas 1 and default to Gas 1 on the surface.
A300/A300 XT OPERATING MANUAL GAUG SURFACE MODE The SURF MAIN screen will remain on display for 10 minutes during which time the unit will enter GAUG Dive Mode upon descent to 5 FT (1.5 M) for 5 seconds. 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 Surface Mode (clock/wave) icon flashing.
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A300/A300 XT OPERATING MANUAL FLY, information includes (Fig. 98): > Time to Fly countdown (hr:min) with FLY and clock (time) icons, dashes if no dive yet. • A (< 2 sec) to step forward to Log Lead-in. • M (< 2 sec) to step back to ALT 2.
A300/A300 XT OPERATING MANUAL GAUG Dive Run Timer While operating in GAUG Dive mode a Run Timer, that by default is displayed on the Dive ALT 1 screen, can be interchanged with EDT (Elapsed Dive Time) and displayed on the Main with EDT moving to the ALT 1 screen.
A300/A300 XT OPERATING MANUAL FREE SURFACE MODE FREE dives, which are allowed prior to NORM, TECH, or GAUG dives as well as after NORM or TECH dives, calculate Ni-O2 based upon the NORM/TECH Algorithm selected and a fixed default FO2 of Air. FO2 settings for NORM/TECH dives do not affect calculations for FREE Dives.
A300/A300 XT OPERATING MANUAL FREE SURF ALT 2, information includes (Fig. 106): > Time of Day (hr:min) with AM (or PM) icon, no icon if 24 hour format. > Temperature with °F (or °C) icon. > Altitude graphic, if L2 (to L7), blank if Sea level.
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A300/A300 XT OPERATING MANUAL SET ALM (ALARMS) LEAD-IN, information is to include (Fig. 109): > Graphics Go To and ALM with SET icon. • S (< 2 sec) to access Set EDT Alarm. • A (< 2 sec) to step forward to Set UTL Lead-in.
A300/A300 XT OPERATING MANUAL FREE DIVE MODE STRUCTURE Surface.Mode at 2 FT (0.6 M) for 1 sec at 5 FT (1.5 M) for 5 sec Dive.Mode DIVE MAIN press Light (Smartglo) < 2 sec Start/Stop Timer 2 sec Reset Timer...
A300/A300 XT OPERATING MANUAL FREE DIVE ALARMS FREE mode alarms, which are separate from NORM (or GAUG) alarms, sound either 1 or 3 times as 3 beeps then clear. They cannot be acknowledged or silenced. CDT Alarm When a set Countdown Time reaches 0:00, the audible will sound during which time the graphic CD will be displayed with 0:00 (min:sec) flashing on the Main (Fig.
A300/A300 XT OPERATING MANUAL PC INTERFACE The A300 and A300 XT are configured with Data Ports (Fig. 121a, 122a) that enable their attachment to an Interface System capable of connection to a PC through a USB port. A USB Driver, provided as part of the optional Interface System, must be installed on the PC.
MODULE REMOVAL FROM BOOT (A300 only) If necessary to remove the A300 module from a console, bend the rubber console boot back to expose the edge of the module. If the boot is flexible enough to permit, you may bend it back far enough to scoop the module out with your finger. Otherwise, it may be necessary to insert a blunt screwdriver until the tip rests just underneath the module.
• Lightly lubricate a new Cover O-ring* with silicone grease and place it on the inner rim of the Battery Cover (Fig. 130). Ensure that it is evenly seated. *The O-ring must be a genuine AERIS part that can be purchased from an Authorized AERIS Dealer. Use of any other Fig. 129 - RETAINING BAR O-ring will void the warranty.
> No adjustments are made during any time that the Wet Contacts are bridged. When diving in high altitude waters from 3,001 to 14,000 feet (916 to 4,270 meters), the A300 AI automatically adjusts to these conditions providing corrected Depth, and reduced No Deco and O2 Times at intervals of 1,000 feet (305 meters).
A300/A300 XT OPERATING MANUAL SPECIFICATIONS CAN.BE.USED.AS • Dive Computer (Air or Nitrox); A300 XT with up to 3 Gases (up to 100% O2). • Digital Depth Gauge/Timer. • Free Dive Gauge/Timer (A300 only). DIVE.COMPUTER.PERFORMANCE • Dual Algorithm >> Buhlmann ZHL-16c based Pelagic Z+, or DSAT based.
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A300/A300 XT OPERATING MANUAL SPECIFICATIONS (CONTINUED) BAR.GRAPHS: TLBG segments • No Deco Normal zone (green) 1 to 13 = 5 to 65% allowable tissue loading. • No Deco Caution zone (yellow) 14 to 19 = 70 to 95% allowable tissue loading.