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A300/A300 XT OPERATING MANUAL
© 2002 Design, 2012 Doc. No. 12-7255-r01 (5/14/12)
AUDIBLE ALARM
While operating in NOR, TEC, or GAU 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 the S button (less than 2 seconds).
An LED Warning Light, on the housing, is synchronized with the Audible and flashes as the Audible sounds. It will turn Off when the Alarm is silenced. The
Audible and LED will not be active if the Audible is set OFF (a group A setting).
Situations that will activate the 10 second Alarm include -
** Items apply only in NORM/TECH modes.
*** Items apply only in TECH mode.
• Low Pressure, at 500 PSI (35 BAR) (A300 XT only).
• Descent deeper than the Depth Alarm Set Point.
• Dive Time Remaining at the Set Point**.
• Elapsed Dive Time at the Set Point.
• PO2 (for Gas in use) level at .20 < Set Point and again at the Set Point**.
• O2 accumulation at 240 OTU (80%), then again at 300 OTU (100%)**.
• TLBG at the Set Point**.
• Ascent Rate exceeds 60 FPM (18 MPM) when deeper than 60 FT (18 M), or 30 FPM (9 MPM) at 60 FT (18 M) and shallower.
• Entry into Decompression Mode (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 in NORM/TECH, > 400 FT/120 M in GAUG).
• A Gas Switch would expose the diver to PO2 => 1.60 ATA***.
A single short beep (which cannot be disabled) sounds when -
• After 5 minutes on the surface after the Violation dive.
3 short beeps sound when -
• Ascent Rate 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 - Elapsed Dive Time every 30 seconds during dive.
• FREE - descent deeper than the Depth Alarm Set Points (1, 2, 3).
• FREE - Delayed Violation (Depth > 330 FT/100 M).
• FREE - CDT counts down to 0:00.
• FREE - TLBG at 14 segments.
• FREE - Violation, entry into Deco.
During the following situations, the audible will not turn off when acknowledged -
• Delayed Violations.
• Deco Stop Depth Violation => 70 FT/21 M stop required.
• FREE mode alarms.
PC INTERFACE
Interface with a PC, to allow uploading settings and downloading data, is accomplished by connecting the unit to a PC USB Port using the special USB
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.
**Prior to attempting to Download data from your unit or Upload Settings to it, review the HELP section of the ACI program. Recommended is to print
those sections of HELP that you consider appropriate for your Interface activities.
The Settings Upload portion of the ACI program can be used to set/change the Set Alarms group, Set Utilities group (Utilities), Set Time, etc. using the same
Interface System. FO2 related items must be set using the control buttons.
Information available for retrieval (download) from the unit to the PC Download portion of the program includes dive data such as number, surface interval
time, maximum depth, elapsed dive time, no deco status, start date/time, lowest temperature under water, sampling rate, dive profile, and Set Points.
The ACI program also allows upgrade of select versions of the unit's firmware (operating system software) after which the unit resets all operating data.
Since the upgrades require reset of the unit, they are blocked during 24 hours after dives.
• Refer to page 45 for more details relating to PC Interface.
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