Shearwater Peregrine setup guide

Also covers: Shearwater Peregrine

Two-button (MENU left, FUNC right) colour-screen computer with Air, Nitrox, 3 GasNx and Gauge modes. Rechargeable battery with wireless charging; vibration alerts, no beeper. Air mode is the factory default. The Peregrine TX is not covered by this manual.

Buttons

Button	Where	What it does
`MENU`	left side of the housing	Open the menu; move through menus and options; while editing, change the value
`FUNC`	right side of the housing	Step through info screens; select a menu item or option; while editing, save the value

Turn on / wake

Press MENU and FUNC at the same time to turn the computer on.
Press togetherMENUPress togetherFUNC
Manual p. 6
A start-up screen shows for about 2 seconds, then the main screen appears.
Manual p. 6
It also switches on by itself about 0.9 m / 3 ft underwater, but do not rely on this. Turn it on yourself before every dive.
Manual p. 6
Press MENU on the main screen to open the menu. MENU moves through the items; FUNC selects one.
PressMENUPressFUNC
Manual p. 7
To leave a menu, stop pressing buttons. After 10 seconds it returns to the main screen; saved values stay, half-finished edits are lost.
Manual p. 31
To switch off on the surface, press MENU and, at Turn Off (first item), press FUNC. It is hidden during a dive and for 1 minute after it (default).
PressMENUPressFUNC
Manual p. 32

Date and time

System Setup cannot be opened during a dive (p. 38).

On the surface, press MENU repeatedly until System Setup appears, then press FUNC.
PressMENUPressFUNC
Manual p. 31
Press MENU until the System Setup page (Date and Clock) appears, then press FUNC.
PressMENUPressFUNC
Manual p. 41
On the Date line, press FUNC to edit. Press MENU to change the value and FUNC to save; repeat for each part.
PressFUNCPressMENU
Manual p. 41
Move to Clock with MENU and set it the same way. You can choose AM/PM or 24-hour time.
PressMENUPressFUNC
Manual p. 41
If the battery runs completely flat, set the date and clock again after charging.
Manual p. 48

Units (m/ft, °C/°F)

Press MENU until System Setup appears and press FUNC. Press MENU until Display Setup appears and press FUNC.
PressMENUPressFUNC
Manual p. 40
On Depth Units, press FUNC, press MENU to choose Meters or Feet, then press FUNC to save.
PressFUNCPressMENU
Manual p. 40
Press MENU to Temp Units, press FUNC, press MENU to choose °C or °F, then press FUNC to save.
PressMENUPressFUNC
Manual p. 40
Depth and temperature units are set separately.
Manual p. 40

Water type (salt/fresh)

Press MENU until System Setup appears and press FUNC. Mode Setup is the first page; press FUNC to open it.
PressMENUPressFUNC
Manual p. 38
Press MENU to the Salinity line, press FUNC, press MENU to choose Fresh, EN13319 or Salt, then press FUNC.
PressMENUPressFUNC
Manual p. 38
EN13319 (between fresh and salt) is the default. This setting changes only the depth shown, not the decompression calculation.
Manual p. 38

Dive mode (Air / Nitrox / Gauge)

Mode can only be changed on the surface (System Setup is not available during a dive, p. 38).

Press MENU until System Setup appears and press FUNC. Mode Setup opens first; press FUNC.
PressMENUPressFUNC
Manual p. 38
On the Mode line, press FUNC, press MENU to choose Air, Nitrox, 3 GasNx or Gauge, then press FUNC. Air is the default.
PressFUNCPressMENU
Manual p. 38
Air is for one tank of air; Nitrox is for one tank of nitrox up to 40% O2. 3 GasNx is for several gases and planned deco.
Manual p. 9
Gauge is a bottom timer: depth and time only, no decompression information.
Manual p. 9
Changing to or from Gauge clears the tissue (nitrogen) data. Plan repeat dives with this in mind.
Manual p. 38
There is no lock-out for missed stops; the computer warns you instead.
Manual p. 24

Nitrox O₂% and ppO₂ limit

The manual does not say that the O2 % resets to 21% by itself.

Set the Mode to Nitrox (see Dive mode).
Manual p. 38
In Mode Setup, press MENU to Gas O2%, press FUNC, press MENU to change it to your analysed %, then press FUNC to save.
PressMENUPressFUNC
Manual p. 38
Press MENU to MOD PPO2. The default is 1.40; only change it if your instructor tells you to. The MOD is shown below it.
PressMENU
Manual p. 38
In Air mode the O2 is fixed at 21%.
Manual p. 38
In Nitrox mode, Define Gas in the main menu also lets you edit the gas, even during a dive.
Manual p. 33

Conservatism / personal setting

Press MENU until System Setup appears and press FUNC. Press MENU until Deco Setup appears and press FUNC.
PressMENUPressFUNC
Manual p. 39
On Conservatism, press FUNC, press MENU to choose Low (45/95), Med (40/85) or High (35/75), then press FUNC. Med is the default.
PressFUNCPressMENU
Manual p. 39
The second number (GF High) controls your no-stop time: a lower number is more conservative and gives shorter no-stop times.
Manual p. 25
A Custom GF option also exists. Do not use it unless you understand gradient factors.
Manual p. 39
Deco Setup also sets the safety stop: Off, 3, 4 or 5 minutes, Adapt, or CntUp (count up).
Manual p. 39

Altitude

Not available on this computer

There is no altitude setting to change: it is fixed to Auto and the computer adjusts for altitude automatically (p. 40).

Audible alarms (depth / time)

The manual describes on-screen and vibration alerts only, no beeper.

Press MENU until System Setup appears and press FUNC. Press MENU until Alerts Setup appears and press FUNC.
PressMENUPressFUNC
Manual p. 40
On Depth, press FUNC, press MENU to switch it on and change the depth, then press FUNC. Default: 40 m.
PressFUNCPressMENU
Manual p. 40 (default p. 21)
Press MENU to Time and set it the same way. Default: 60 minutes, but switched off.
PressMENUPressFUNC
Manual p. 40 (default p. 21)
Low NDL warns when no-stop time gets short (default 5 minutes). Vibration on/off is also on this page.
Manual p. 40 (default p. 21)
Before diving, open Dive Setup and run Test Vibration to check you can feel it.
Manual p. 36
When an alert appears, press either button to clear it.
Manual p. 19

Reading the log after a dive

Dive Log is only available on the surface (p. 36).

On the surface, press MENU until Dive Log appears, then press FUNC.
PressMENUPressFUNC
Manual p. 31
At Display Log, press FUNC to see the list of dives.
PressFUNC
Manual p. 36
Press MENU to move to a dive and FUNC to view it.
PressMENUPressFUNC
Manual p. 36
The log shows max and average depth, dive number, date, start and end time, dive length, temperatures, mode, surface interval, GF and CNS.
Manual p. 36
The depth profile is drawn in blue; deco stops are shown in red.
Manual p. 36

Battery

On the surface, check the battery icon on the main screen: blue is OK, yellow means charge soon, red means charge now.
Manual p. 11
Press FUNC on the main screen to step through the info screens; one shows the battery voltage.
PressFUNC
Manual p. 18
If LOW BATTERY appears, recharge before diving.
Manual p. 22
Charge it flat on the wireless charging dock (USB powered). A full charge takes about 2 hours.
Manual p. 47
If the battery goes completely flat, settings are kept but the clock must be reset and tissue (nitrogen) data is lost.
Manual p. 48
For storage, charge to 100% and top up every 3 months.
Manual p. 47

What the main screen shows

Top left: current depth. Next to it: dive time in minutes and seconds. On the surface this shows the surface interval and battery icon.
Manual p. 10
Ascent rate arrows: white under 9 m (30 ft) per minute, yellow up to 18 m (60 ft) per minute, flashing red above that.
Manual p. 11
NDL is the no-stop time left in minutes. It turns yellow when it gets low.
Manual p. 12
Below 11 m (35 ft) a safety stop counter appears. It counts down from 6 m (20 ft) while you stay between 2.4 and 8.3 m (7–27 ft).
Manual p. 23
If NDL reaches 0, the stop depth and time replace the safety stop. Go to that depth and wait.
Manual p. 12
Bottom row: current gas, max depth, time of day and temperature. Press FUNC for more data, MENU to return.
PressFUNCPressMENU
Manual p. 10

Pre-dive check

Tick each item before you get in the water.

Dive mode is Air or Nitrox as planned (not Gauge unless intended).
Nitrox: Gas O2% matches your analysed tank and MOD PPO2 is 1.40 unless told otherwise.
Salinity matches the dive site (Fresh, EN13319 or Salt).
Conservatism is the level your instructor wants.
Battery icon is blue and the computer is charged.
Depth and time alerts are set; vibration works (Test Vibration).
Depth units (m or ft) are the ones you expect.
Turn the computer on yourself before the dive; do not rely on auto-on.