Sherwood Vision setup guide

Also covers: Sherwood Vision, Vision console

Air-integrated console computer (hose to one tank) with a digital compass and three buttons: M and A on the front, S on the side. NORM (Air/Nitrox, up to 4 gases) and GAUG modes; dot-matrix menus. Nitrox O2 % can reset to 50% after a dive. User-replaceable CR2450 battery.

Buttons

Button	Where	What it does
`M`	front, left	Menu / Mode / Minus: open the menu, move back, decrease; hold: back to Surface Main
`A`	front, right	Advance / Add: move forward, increase; ALT screens
`S`	right side	Select / Save; backlight; silence an alarm; hold: step back or open compass

Turn on / wake

Press and release any button to switch it on. It shows all segments, counts down 9 to 0, then shows MY INFO for 10 seconds.
PressMPressAPressS
Manual p. 7
The NORM surface screen appears next. Press M to open the menu.
PressM
Manual p. 12
In a menu, press A to move down and M to move up. Press S to open the item next to the arrow (>).
PressAPressMPressS
Manual p. 7
Hold S for 2 seconds to step back. Hold M for 2 seconds at any time to return to the surface screen.
HoldSHoldM
Manual p. 7
With no dive, it switches off after 2 hours. Press S briefly for the backlight.
PressS
Manual p. 7

Date and time

Press M to open the menu. Press A to move to SET.MENU, then press S.
PressMPressAPressS
Manual p. 14
Press A to move to T (TIME), then press S.
PressAPressS
Manual p. 14
Move to DATE FORM, HOUR FORM, TIME or DATE with A or M. Press S to make the value flash.
PressAPressMPressS
Manual p. 17
Press A to increase or M to decrease (hold A to scroll fast). Press S to save; the next digits then flash.
PressAPressMHoldAPressS
Manual p. 17
Time is set hours then minutes. Date is set year, then month, then day.
Manual p. 17

Units (m/ft, °C/°F)

One setting (IMP or MET) changes all units together (p. 17).

Press M, move to SET.MENU with A, and press S. Move to U (UTILITIES) and press S.
PressMPressAPressS
Manual p. 14
Press A to move to UNITS, then press S so the setting flashes.
PressAPressS
Manual p. 17
Press A to choose IMP or MET, then press S to save.
PressAPressS
Manual p. 17

Water type (salt/fresh)

Not available on this computer

There is no salt/fresh water setting in the Set U list (p. 17). At 916 m (3,001 ft) and higher it switches to fresh-water depth measurement by itself (p. 43).

Dive mode (Air / Nitrox / Gauge)

The manual does not describe a Gauge-mode lockout; after a Gauge dive no desaturation time is shown (p. 13). Use GAUG only if your instructor says so.

Press M to open the menu. Press A to move to OP.MODE, then press S.
PressMPressAPressS
Manual p. 14
Press A or M to choose NORM (air/nitrox computer) or GAUG (depth gauge and timer).
PressAPressM
Manual p. 14
Press S to select it. The surface screen of that mode appears.
PressS
Manual p. 14
NORM is the default when switched on if there was no dive in the past 24 hours.
Manual p. 10

Nitrox O₂% and ppO₂ limit

Gas settings go back to Gas 1 = Air (others OFF) after 24 hours without a dive. After a nitrox dive, Air cannot be chosen for 24 hours (p. 15–16).

Press M, move to SET.MENU with A and press S. Move to F (FO2) and press S.
PressMPressAPressS
Manual p. 14
With the arrow at GAS1, press S so the O2 value flashes.
PressS
Manual p. 16
Press A to go up or M to go down (AIR, 21–100%). Hold A to scroll fast. Press S to save.
PressAPressMHoldAPressS
Manual p. 16
For nitrox the PO2 alarm flashes next: set 1.00–1.60 (steps of 0.05) with A or M, for example 1.40. Press S to save.
PressAPressMPressS
Manual p. 16
Leave GAS2 OFF for one tank (then Gas 3 and 4 stay off).
Manual p. 16
DEFAULT (50%): choose OFF or ON with A or M, then press S. ON makes the O2 show 50% ten minutes after a nitrox dive.
PressAPressMPressS
Manual p. 16

Conservatism / personal setting

Press M, move to SET.MENU with A and press S. Move to U (UTILITIES) and press S.
PressMPressAPressS
Manual p. 14
Press A to move to CONSER, then press S so the setting flashes.
PressAPressS
Manual p. 17
Press A to choose ON or OFF, then press S to save.
PressAPressS
Manual p. 17
CF ON shortens no-deco limits to those of an altitude 915 m (3,000 ft) higher. A CF icon shows in the dive.
Manual p. 20

Altitude

Altitude is detected automatically; there is no manual altitude setting (p. 43).

Nothing to set: it reads air pressure when switched on and adjusts by itself from 916 m (3,001 ft) up to 4,270 m (14,000 ft).
Manual p. 43
To see the altitude level, press A twice on the surface screen for ALT 2: EL2–EL7, or blank at sea level.
PressA
Manual p. 12

Audible alarms (depth / time)

Press M, move to SET.MENU with A and press S. Move to A (ALARMS) and press S.
PressMPressAPressS
Manual p. 14
Move to an alarm with A or M and press S so its value flashes.
PressAPressMPressS
Manual p. 7
AUD (audible): press A to choose ON or OFF, then S to save. Leave it ON.
PressAPressS
Manual p. 16
DEPTH: OFF or 10–100 m (30–330 ft). EDT (dive time): OFF or 10–180 min. Use A to increase, M to decrease, S to save.
PressAPressMPressS
Manual p. 16
TLBG, DTR, TURN and END pressure alarms are set the same way.
PressAPressMPressS
Manual p. 16
An alarm beeps for 10 seconds and a light flashes. Press S briefly to silence it.
PressS
Manual p. 8

Reading the log after a dive

Quick look: press A on the surface screen for ALT 1 (LAST dive: surface interval, max depth, dive time).
PressA
Manual p. 12
Full log: press M, press A to move to LOG, then press S. The list shows dive number, date and start time.
PressMPressAPressS
Manual p. 13
Press A or M to choose a dive, then press S for Data 1: surface interval, max depth, dive time, ascent rate.
PressAPressMPressS
Manual p. 13
Press S for Data 2 (altitude, start and end tank pressure, lowest temperature) and, for nitrox, Data 3 (O2 and max PO2).
PressS
Manual p. 14
The log keeps the last 24 NORM and GAUG dives.
Manual p. 13

Battery

A solid battery icon (shell with bar) is a warning: the backlight stops working. Change the battery soon.
Manual p. 9
A flashing empty battery icon is an alarm: the unit shuts off after 5 seconds. Do not dive.
Manual p. 9
It uses one 3 V CR2450 lithium battery that the user can replace (once a year is recommended).
Manual p. 9

What the main screen shows

On the surface: surface time, NORM or GAUG, dive number, gas number, tank pressure, AIR or O2 %.
Manual p. 12
In a dive: depth, dive time remaining (NDC or O2), tank pressure, gas number and air time remaining (ATR).
Manual p. 24
Max depth and dive time are on ALT 2 (press A), unless added to the main screen in Set D.
PressA
Manual p. 24
The left bar shows nitrogen loading; the top segment means decompression. The right bar shows ascent rate.
Manual p. 20
Too fast: all ascent segments flash with TOO FAST. Stay under 9 m (30 ft) per minute when shallower than 18 m (60 ft).
Manual p. 20

Pre-dive check

Tick each item before you get in the water.

Hose connected and tank pressure shows on the surface screen.
Mode is NORM (not GAUG) unless your instructor says otherwise.
Gas 1 is AIR or the O2 % of your analysed tank (check after a dive if the 50% default is ON).
PO2 alarm set as your instructor asks (for example 1.40).
Audible alarm (AUD) is ON.
Conservative Factor set as your instructor wants.
Units (IMP or MET) as you are used to.
No battery icon on the surface screen.