Scubapro Meridian User Manual

®

Meridian

Meridian Diving Computer - Designed by Divers

Welcome to SCUBAPRO dive computers and thank you for purchasing the Meridian. You are now the owner of an extraordinary partner for your dives. This manual provides you easy access to SCUBAPRO state of the art technology and Meridian’s key features and functions. Should you wish to know more about SCUBAPRO diving equipment, please visit our website www.scubapro.com.

WARNING

•Meridian has a depth rating of 120m/394ft.

•If 120m is exceeded, -- will be shown in the depth field and the decompression algorithm does not calculate correctly.

•Diving at oxygen partial pressures higher than 1.6 bar (corresponding to a depth of 67m/220ft when breathing compressed air) is extremely dangerous and could lead to serious injury or death.

Merdian dive instrument is a personal protective equipment in compliance with the essential safety requirements of the European Union directive 89/686/EEC. RINA SpA, Via Corsica 12, I-16128 Genoa, notified body no. 0474, have certified the conformity with the European Standard EN 13319:2000.

EN13319:2000 Diving accessories - Depth gauges and combined depth and time measuring devices - Functional and safety requirements, test methods. Any information on decompression obligation displayed by equipment covered by this standard is explicitly excluded from its scope.

8. 2011 bz

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TABLE OF CONTENTS

1. Introduction to Meridian .......................................................................................			6
1.1	Battery	.....................................................................................................	6
2. Meridian as a watch ..............................................................................................			8
	2.1.1 ...........................................................Setting the alarm clock		12
	2.1.2 ......................................................................	Setting the UTC	12
	2.1.3 ......................................................................	Setting the time	12
	2.1.4 ..............................................................Set the 12/24h mode		13
	2.1.5 ......................................................................	Setting the date	13
	2.1.6 ..................................Setting the sound to “off ” (silent mode)		13
	2.1.7 ....................................................Checking the battery status		14
	2.1.8 ...........................................................Checking the device ID		15
2.1	Menus ..............................................................................and functions		16
	2.1.1 ..............................................................	Using the Stopwatch	17
	2.1.2 ..............................................................	Checking the Altitude	17
	2.1.3 .......................................................................	Planning a dive	18
	2.1.4 .............................................................	Reading the Logbook	19
	2.1.5 ......................................................Dive surface mode display		20
3. Meridian as a dive ..............................................................................computer			21
3.1 Settings ......................................................................at the dive mode			21
	3.1.1 ..............................................................Dive mode at surface		23
	3.1.2 ..........................................................	Surface interval counter	23
3.2	Gas settings ...........................................................................................		23
	3.2.1 ...............................................................................	Set Gas 1	23
	3.2.2 ...............................................................................	Set Gas d	24
	3.2.3 .....................................................................	Nitrox reset time	24
	3.2.4 ...............................................Workload settings (pulse limits)		25
	3.2.5 ..................................................................	Desaturation reset	25
3.3	SCUBA .....................................................................................settings		25
	3.3.1 ....................................................Maximum dive depth alarm		25
	3.3.2 .......................................................Maximum dive time alarm		26
	3.3.3 ................................................Setting the Micro Bubble level		26
	3.3.4 ...................................................Setting the Safety stop timer		26
	3.3.5 ...............................................Setting the user preferred units		26
	3.3.6 ..................................Selecting the salt (ocean) or fresh water		27
	3.3.7 ............................................Setting the Backlight on duration		27
	3.3.8 .............................Setting audible attention signals on and off		27
	3.3.9 ..............................................Deactivating the water contacts		28
3.4	APNEA .....................................................................................Settings		28
	3.4.1 ...................................................Setting the dual depth alarm		28
	3.4.2 ........................................Setting the depth incremental alarm		29
	3.4.3 ......................................Setting the dive time interval warning		29
	3.4.4 ........................................Setting the surface interval warning		29
	3.4.5 .....................................Setting the low Heart Rate limit alarm		29
	3.4.6 ..............................................Setting the Ascent speed alarm		30
	3.4.7 ........................................................Setting the water density		30
3.5	Algorithm .................................................................................selection		31

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	3.6	...............................................................................Diving with Meridian		32
		3.6.1	Display information .................................................................	32
		3.6.2	Display configuration during the dive ......................................	33
	3.7	Altitude diving ........................................................................................		34
		3.7.1	Altitude classes, altitude warning and no-fly time after a dive ..	34
		3.7.2	Altitude and the decompression algorithm ..............................	35
		3.7.3	Prohibited altitude ...................................................................	35
		3.7.4	Decompression dives in mountain lakes .................................	36
	3.8 No-dive warning after a dive ...................................................................			36
	3.9	SOS .......................................................................................................		37
		3.9.1	Desaturation reset ..................................................................	37
	3.10 Diving with nitrox or with another decompression gas ............................			37
		3.10.1	Diving with two gas mixtures ...................................................	38
	3.11	Warnings and alarms .............................................................................		40
		3.11.1	CNS O2 = 75% .......................................................................	40
		3.11.2	No-Stop time = 2 minutes ......................................................	40
		3.11.3	Entering decompression .........................................................	41
		3.11.4	Entering level stops .................................................................	41
		3.11.5	L0 no stop time = 2 minutes when diving an MB level .............	41
		3.11.6	Entering deco when diving an MB level ...................................	41
		3.11.7	Ascent rate ............................................................................	41
		3.11.8	MOD/ppO2 ............................................................................	42
		3.11.9	CNS O2 = 100% .....................................................................	42
		3.11.10 Missed decompression stop ...................................................		43
		3.11.11 Low battery ............................................................................		43
		3.11.12 Setting bookmarks .................................................................		43
		3.11.13 Safety stop timer ....................................................................		43
		3.11.14 Activating the backlight ...........................................................		44
		3.11.15 Diving with MB levels ..............................................................		44
		3.11.16 Display information .................................................................		45
		3.11.17 Display of underlying L0 decompression information ..............		46
		3.11.18 Cascading MB levels ..............................................................		46
		3.11.19 Level stop ignored/MB level reduced ......................................		46
		3.11.20 PDI Stops ...............................................................................		46
	3.12	GAUGE mode ........................................................................................		47
	3.13	APNEA mode .........................................................................................		49
4.	Meridian accessories ..........................................................................................			50
	4.1	HR belt ..................................................................................................		50
	4.2	Nylon arm strap .....................................................................................		50
5.	Meridian PC interface .........................................................................................			51
	5.1	Cradle ...................................................................................................		51
	5.2 Introduction to SCUBAPRO LogTRAK ...................................................			51
		5.2.1	Download dive profiles ............................................................	51
		5.2.2	Change warnings/settings of the Meridian and reading dive
			computer info .........................................................................	52

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6.	Taking care of Meridian ......................................................................................		53
	6.1	Technical information .............................................................................	53
	6.2	Maintenance ..........................................................................................	53
	6.3	Replacing the battery in Meridian . ........................................................	54
	6.4	Warranty ................................................................................................	55
7.	Glossary	...............................................................................................................	56
8.	Index .....................................................................................................................		58

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1. Introduction to Meridian

1.Introduction to Meridian

The Meridian User Manual is divided into the following main sections.

1 Introduction to Meridian. This section provides an overview of the Meridian dive computer and describes its operating modes and functions when on the surface.

2 Meridian as a watch. This section describes Meridian when it is used as a watch.

3 Meridian as a dive computer. This section describes all settings and functions of Meridian as a dive computer and takes you underwater with Meridian. It’s about everything Meridian can and will do to enhance your safety and fun underwater.

4 Meridian accessories. This section briefly describes the Meridian extras that can be purchased as additional options, to get the most from your dive computer in all diving conditions.

5 Meridian PC interface. This section is about personalization and customization. It describes how to change settings, to download and manage your logbook.

Meridian is a technologically-advanced instrument that can accompany you during your underwater adventures while providing you with accurate depth, time and decompression information. On the surface its size and good looks makes it an ideal everyday watch. With features such as wake-up alarm, stop watch, and altimeter, Meridian can handle almost every task in your daily activities.

The buttons allow you to operate functions, access menus and change settings while on the surface. During the dive buttons set bookmarks, show additional information on the dive computer screen and activate the backlight.

We hope you will enjoy getting to know your new dive computer and we wish you many wondrous dives with the Meridian.

1.1Battery

Meridian uses a CR2032 lithium battery, available from your authorized SCUBAPRO dealer. To reduce the risk of fire or burns, follow the battery manufacturers recommendations when replacing, recycling or disposing the battery. Meridian will alert you when the battery is approaching a critical value by displaying the battery symbol. In addition, you can verify the status of the battery on the main menu.

When the battery symbol appears, this means that the battery is in fact low, although with some reserve remaining. In dive mode the backlight will not activate or work when the battery is low and the battery symbol is shown. If the battery symbol flashs the battery level is dangerously low and neither the backlight nor the alarm tones will be activated, and therefore diving

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is not recommended before changing the battery.

Battery symbol

WARNING

Starting a dive when the battery symbol is flashing can cause the dive computer to fail during the dive! Replace the battery before any diving activity if the flashing battery symbol appears.

When the ‘do not dive symbol’ appears with the battery symbol, Meridian can not be used for diving before replaced with a new battery.

Do not dive symbol

Please refer to chapter 2.1.7 Checking the battery status for details how to check your Meridian battery status.

WARNING

Replacing the battery requires opening the electronic compartment of Meridian. You must take extreme care when performing the battery change operation in order to ensure the water seal of the watch. Failing to do so will cause Meridian to flood during your next dive and permanently damage the dive computer. Damage to Meridian due to an improper battery replacement is not covered by warranty. We strongly recommend having the battery change operation be carried out by your authorized SCUBAPRO dive retailer.

See chapter 6.3 Replacing the battery in Meridian for more information on how to replace the battery.

1. Introduction to Meridian

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2. Meridian as a watch

2.Meridian as a watch

Meridian is more than just a watch. It features:

•a wake-up alarm-clock function

•a stopwatch with lap time and 99 hours run time

•an altimeter for tracking excursions to the mountains.

•a thermometer

FNOTE: Considering that the metal housing is a good heat conductor, the temperature reading will be warmer than reality when wearing Meridian directly on the wrist exposed to your skin. This does not happen underwater as usually it is worn over a wetsuit.

The functions of the buttons when on the surface are summarized in the table below and explained in detail in the following sections.

LIGHT			+/UP

SEL/ESC		–/DOWN

Button LIGHT, Top Left :	Short press = backlight
Button +/UP, Top Right:	+/UP = adds numerical values, scrolls up in the
	menus
Button –/DOWN, Bottom	–/DOWN = subtracts numerical values, scrolls down
Right:	in the menus
Button SEL/ESC, Bottom	• Short press = select,
Left:	• Long press = escape (return to previous menu) or
	• cancel the setting

The diagram below shows the watch menu logic in a graphic form. The diving functions are described in detail in section 3 Meridian as a dive computer.

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2. Meridian as a watch

TIME & DATE

SEL

SET alarm clock

+/UP

UTC

+/UP

SET time

+/UP

SET 12/24h

mode

+/UP

SET date

+/UP

SET Sound

off

+/UP

CHECK battery state

+/UP

Unit ID

+/UP

STOP watch

+/UP

Altitude meter

+/UP

Planner

+/UP

LOG

+/UP

DIVE mode

SEL

SEL

SEL

SEL

STOP watch function

Planner

pages

Logbook

pages

Dive settings & menus

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2. Meridian as a watch

The reference point for any description of Meridian as a watch is the main time of day display. This is the display in which the current time is shown in the middle row. The upper display row shows the date. For example the diagram below shows Saturday, 23rd of November and the time is one second past 10 o’clock.

24h mode

12h mode

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2. Meridian as a watch

Clock setting functions

you may edit the settings and values on

By pressing the SEL/ESC button from the

that current menu.

main time and date display you will get

into clock settings (marked dark at the

graphics below).

By pressing +/UP button you scroll to the

next menu. By pressing SEL/ESC button

TIME & DATE

SEL

+/UP

SET alarm

STOP watch

clock

+/UP

+/UP

UTC

Altitude meter

+/UP

+/UP

SET time

Planner

+/UP

+/UP

SET 12/24h

LOG

mode

+/UP

+/UP

SET date

DIVE mode

+/UP

+/UP

SET Sound

off

+/UP

CHECK

battery state

+/UP

Unit ID

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2. Meridian as a watch

2.1.1Setting the alarm clock

Alarm off

By pressing the SEL/ESC button the alarm time will start flashing.

You can scroll the hours setting by pressing +/UP or –/DOWN buttons.

By again pressing the SEL/ESC button the minutes will start flashing and by pressing +/UP or –/DOWN buttons you can scroll them.

By again pressing the SEL/ESC button the state of alarm will start flashing and ‘on’ or ‘off’ can be selected by pressing +/UP or –/ DOWN buttons.

Pressing the SEL/ESC button again at the end will confirm the alarm time settings.

FNOTE: Setting the sound setting to ‘off’ does not affect the alarm clock. However, the intelligent battery stretching algorithm disables all warning tones when there are two or less dots remaining on the battery status display or when the battery symbol is flashing in another display.

2.1.2Setting the UTC

UTC setting will change the shown time compared to Greenwich 0-Meridian. This feature is practical when travelling through different time zones.

By pressing SEL at UTC menu, the hours will start to flash. You may edit them with +/ UP or –/DOWN buttons. By pressing SEL the minutes will start to flash and you may edit them with +/UP or –/DOWN buttons in 15 minutes increments. Activate the UTC setting by pressing SEL.

2.1.3Setting the time

Setting the current time

In the display above the current time is displayed on the menu. By pressing the SEL/ESC button, the time setting will be activated: hours start flashing and seconds will turn to 00. You may change the hours with +/UP or –/DOWN buttons. By pressing the SEL/ESC button the selection will change to minutes and you may now edit them. By pressing the SEL/ESC the new time setting will be saved.

FNOTE: seconds cannot be edited; they always start counting from 0.

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			2. Meridian as a watch
2.1.4	Set the 12/24h mode	is the month). By pressing the SEL/ESC
		button the setting will be saved and move
		to the next digits. Again by pressing the
		SEL/ESC button the year digits after the
		dot will start flashing.
		2.1.6	Setting the sound to “off ”
			(silent mode)

English

24 hour display

By pressing the SEL/ESC button at the mode menu 24h starts flashing. With +/ UP or –/DOWN buttons you may change between 24 hour or 12 hour format = am/ pm displays. Pressing SEL/ESC will save the selection.

FNOTE: the 12 hour selection will change the shown day format to display date in the following sequence:

Month.Date.Year. If you keep the watch in the 24 hour format, you will have the date displayed in the following sequence: Date.Month.Year This change also takes place in the watch and in the dive computer log book.

2.1.5Setting the date

When setting the date, by pressing the SEL/ESC button, the first digits will flash, indicating they can be changed by pressing +/UP or –/DOWN buttons (in 24h mode the first digit is days, in 12h mode the first digit

By pressing the SEL/ESC button the ‘on’ setting will start flashing at the bottom of the display. By pressing +/UP or –/DOWN buttons you may select ‘on’ or ‘off’ for the Meridian silent mode for alarms and button tones. The sound off selection is protected with a code.

WARNING

The Sound ‘off’ selection will disable all audible dive mode alarms and warnings. This is potentially dangerous.

FNOTE: the only exception to the silent operation is the alarm clock. It will remain activated even if the main setting is: sound off.

To turn off the sound a code must be entered into the dive computer to activate the change. The unlock code for ‘sound off’ is 313. When the sound off option has been selected the first digit starts flashing. By pressing +/UP or –/DOWN buttons the code number can be changed and by pressing the SEL/ESC button the code number will be stored.

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2. Meridian as a watch

2.1.7Checking the battery status The battery status menu displays how

				much energy is left in the CR2032 battery.
				A brand new battery shows 5 dots.
				Meridian is periodically measures the
				battery status and you can manually trigger
				this display by pressing the SEL/ESC
				button in the battery status menu.
				The intelligent battery algorithm will limit
				some functions when the battery is close to
				running out. See the table below for battery
				status and function details.
Battery status
Battery status			Display in other	Battery status	Function limitations
display in battery			modes
	mode
	ooooo			Fresh battery	none
	oooo			Battery ok for diving	none
	ooo			Battery ok for diving	none
	oo change		Battery symbol	Weak battery, change	Backlight not operat-
				battery	ing
	o change		Flashing battery sym-	Completely used bat-	Alarms and Backlight
			bol, no dive symbol	tery, must change	not operating, diving
					not recommended
None, change			Flashing battery sym-	Completely used	Diving mode not
			bol, no dive symbol	battery, must change,	allowed, only
				watch may reset at	watch may be
				any time and remain	active
				off

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2. Meridian as a watch

FNOTE: The battery capacity and voltage at the end of the battery lifetime may vary depending on battery manufacturers. Generally, operation at low temperatures decreases the battery capacity. Therefore, when the battery indicator drops below 3 dots, change the battery before making any dives.

Change the battery before the next dive

2.1.8Checking the device ID

Each Meridian watch has a specific, individual ID number. The 10 digit ID number is shown in this menu.

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2. Meridian as a watch

2.1Menus and functions

By simply pressing buttons +/UP or –/ DOWN from the time of day display you can scroll through the various menus in Meridian. The diagram below shows the sequence of the menus. Note that when you first reach a menu, you are “outside” of it. You must SEL/ESC button to enter the actual menu.

TIME & DATE

SEL

SET alarm clock

+/UP

UTC

+/UP

SET time

+/UP

SET 12/24h

mode

+/UP

SET date

+/UP

SET Sound

off

+/UP

CHECK battery state

+/UP

Unit ID

+/UP

STOP watch

+/UP

Altitude meter

+/UP

Planner

+/UP

LOG

+/UP

DIVE mode

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2.1.1Using the Stopwatch

The first menu from the time of day display is STOP (watch). By pressing SEL/ESC button the stopwatch will be activated.

In the first display the stopwatch shows the status, which can be stop, run or lap. When activating the stopwatch for the first time the display will be as shown above.

Press +/UP button and the stopwatch starts counting showing: run. Press +/UP button again to stop the counting. The counted time will stay on the display.

Stopwatch will reset the counted time when +/UP button is pressed and held.

2. Meridian as a watch

The laps can be marked by pressing –/DOWN button when stopwatch is counting. By doing so the display will freeze for 5 seconds and Meridian shows the lap time.

Counting will continue automatically and the lap counter will show the number of laps at the bottom of the screen.

By pressing SEL/ESC button you can exit the stopwatch and return to the stopwatch menu.

FNOTE: You can leave the stopwatch actively counting or you can leave the stopped time on the display. The status will be stored in a memory that allows you to continue from the same display the next time.

2.1.2Checking the Altitude

Current Altitude Class

Altitude

Temperature

On the altitude menu, the current altitude is calculated from the barometric pressure. The current altitude, the Altitude Class and the temperature are shown.

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2. Meridian as a watch

FNOTE: barometric pressure is a variable, changing with weather and atmospheric pressure at a specific elevation. Dive algorithm uses Altitude Classes which are directly derived from the barometric pressure. Altitude is counted from the current barometric pressure and it is therefore a relative value.

The altitude can be adjusted when current elevation is known by pressing the SEL/ESC button. The altitude value will start flashing. By pressing +/UP or –/DOWN buttons the value can be adjusted in 10m/50feet increments. Adjusting the altitude elevation has no effect on Altitude Class.

FNOTE: Different altitude/temperature measurement combinations such as m&˚C, Ft&˚C, m&˚F or Ft&˚F can be selected from the dive mode menu in: Units.

2.1.3Planning a dive

You can plan your next dive based on your body’s nitrogen saturation. The planner also uses the following information:

1.Selected oxygen concentration and active tanks

2.Selected water type

3.Selected microbubble level

4.Water temperature of the most recent dive

5.Altitude class

6.Status of saturation at the time the planner is started

7.A normal workload of the diver and observance of the prescribed ascent rates.

By pressing SEL/ESC button at the planner menu you will get into the planner directly or to the surface interval setting (repetitive dive).

FNOTE: When Meridian is in GAUGE or APNEA modes the Planner is disabled and Planner OFF is shown in this menu.

Prohibited Altitude Class

Surface interval

Surface interval

For repetitive dives enter the surface interval: By pressing the +/UP or –/DOWN buttons the surface interval can be adjusted in 15 minutes increments. The prohibited altitude is shown on the top row and by increasing the surface interval the allowed limit will get to maximum (level 4).

In case Meridian is displaying the no-dive warning, the duration of the warning itself is displayed as recommended surface interval for planning purposes (rounded up to the nearest fifteen-minute increment).

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