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Sherwood LOGIC - User Manual

Sherwood LOGIC
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SherwoodScuba.com
1
LOGIC DIVE COMPUTER
OWNER’S MANUAL
COPYRIGHT SHERWOOD SCUBA V.01.26.2024
SherwoodScuba.com
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Summary

INTRODUCTION

BASIC CONSIDERATIONS

RESPONSIBLE COMPUTER DIVING

Buttons Layout

Advance Button

Use to toggle through screen options and access sub-menus.

Select Button

Use to turn backlight on and change values within sub-menus.

FEATURES AND DISPLAYS

Informational Displays

Details on DIVE, TIME, and DATE display screens.

Bar Graphs

Explanation of N2/O2 and Ascent Rate bar graphs.

TEMPERATURE, ALTITUDE AND MODE DISPLAYS

Audible Alarm

Describes how the unit alerts divers to different alarm situations via beeps.

SURFACE SCREENS & BASIC SETTINGS

SET 1 - MODE

Toggles between Air, Nitrox or Gauge modes.

SET 2 - ALM

Alarms Options. Depth, Dive Time.

SET 3 - Units

Units, Sampling, Deep Stop alarm.

SET 4 - Time

Change time format, time of day and date.

SET 5 - DEL

Deletes Logbook/ Diving Information

PLAN MODE

Air and Nitrox Planning

How to plan dives using Air or Nitrox modes.

LAST DIVE SCREENS

Last Main Screen

Displays data for the most recent dive conducted.

Last Alternate Screen (Nitrox only)

Displays Nitrox-specific data for the last dive.

LOG MODE

Log Screen #1 (SCR1)

Displays dive temperature, surface interval, NITROX status, max depth, and dive time.

Log Screen #2 (SCR2)

Displays dive start/end times, NITROX status, max PO2, and O2BG.

HISTORY MODE

History 1 Screen

Displays total dive time, total dives, max depth, and dive number.

History 2 Screen

Displays minimum temperature attained and highest altitude reached.

DIVE MODES

No Deco Main (Default)

Displays dive data like max depth, dive time, current depth, and nitrogen buildup.

No Deco Alt 1

Displays temperature, time of day, and current depth for No Deco dives.

No Deco Alt 2 (only if Nitrox)

Displays PO2, NITROX status, current depth, and FO2 set point for Nitrox dives.

NO DECO DEEP STOP

NO DECO SAFETY STOP

DIGITAL GAUGE MODE

Gauge Dive Main (Default)

Displays max depth, dive time, current depth, and ascent rate.

Gauge Dive Alt

Displays temperature, time of day, and current depth in Gauge Mode.

HIGH PO2

High PO2 Main

Displays warnings and data when PO2 levels approach or reach the alarm set point.

HIGH O2

High O2 Main

Displays warnings and data when O2 saturation reaches critical levels (80% or 100%).

DECOMPRESSION DIVE MODE

Deco Stop Main

Displays stop depth, stop time, current depth, total ascent time, and nitrogen status.

CONDITIONAL VIOLATION (CV)

CV Main Display

Displays violation messages, stop depth, stop time, and current dive status.

DELAYED VIOLATIONS (DV)

Delayed Violation #1 (DV1)

Occurs if you remain above the Stop Depth for longer than 5 minutes.

Delayed Violation #2 (DV2)

Occurs when Required Deco Stop Depth is > 60 ft but < 70 ft.

Delayed Violation #3 (DV3)

Occurs when Max Operating Depth is exceeded.

VIOLATION GAUGE MODE (VGM)

VGM ON SURFACE

CARE AND MAINTENANCE

Care and Cleaning

Instructions for cleaning and protecting the dive computer.

ANNUAL INSPECTIONS AND SERVICE

BATTERY INFORMATION

Battery Life and Indicators

Details battery life expectancy and low battery condition alerts.

Battery Replacement Procedures

Step-by-step guide for safely replacing the dive computer's battery.

SPECIAL WARNINGS AND SAFETY INFORMATION

REFERENCE DATA

NO DECOMPRESSION MODEL

Tissue Compartment Control

Explains how the LOGIC tracks 16 tissue compartments for dive calculations.

No Decompression Limits (NDL)

Contrasts LOGIC's NDLs with U.S. Navy limits.

OXYGEN AND ALTITUDE CONSIDERATIONS

Oxygen Information

Details on oxygen exposure limits and calculations.

Altitude Diving

Considerations for diving at various altitudes.

DIVE TIME REMAINING (DTR)

No Decompression DTR

Maximum time at current depth before entering decompression.

O2 Time Remaining

Decreases as oxygen accumulation increases during nitrox dives.

SPECIFICATIONS AND PERFORMANCE

General Specifications

Covers settings, modes, and features.

Operational Performance

Details on function accuracy, dive counter, log mode, altitude, and power.

GLOSSARY

ALTITUDE NDLS TABLES

Sherwood LOGIC Specifications

General IconGeneral
TypeDive Computer
DisplayLCD
Altitude AdjustableYes
Audible AlarmYes
Battery TypeCR2450
ModesAir, Nitrox
Ascent Rate IndicatorYes
Maximum Operating Depth100 meters
Max Depth100 meters
Battery LifeApproximately 2 years / 300 dives
Water Resistance100 meters

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