Tusa IQ-850 DC-Sapience User manual

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OPERATINGMANUAL
DIVECOMPUTER
IQ-850

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User Manual Contents
IQ-850 Flow Chart and Information 2
1. Introduction 8
2. Key Features 8
3. Common Sense Warnings 8
4. Accessing Display Modes 11
5. Time Mode 12
6. Dive Set Mode 14
7. Dive Plan Mode 16
8. Log Profile Mode/Warnings 18
9. History Mode 23
10. PC Transfer Mode 24
11. Time Set Mode 25
12. Dive Mode 26
13. Warning Screens 31
14. Altitude Setting 36
15. Battery Level Icon 38
16. Battery Replacement 38
17. Units of Measurement 39
18. General Handling 39
19. Warranty 40
22. Technical Specications 44

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IQ-850 Flow Chart

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IQ-850 Flow Chart cont.

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IQ-850 Flow Chart cont.

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IQ-850 Flow Chart cont.

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IQ-850 Flow Chart cont.

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IQ-850 Flow Chart cont.

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1. Introduction
Congratulations on your choice of the TUSA IQ-850 Dive Computer.
The IQ-850 is a compact and sophisticated dive instrument that will
give you reliable, trouble free performance, dive after dive.
The information in this manual has been developed for your safety.
Please read and understand this manual completely before using
your new TUSA dive computer.
2. Key Features
Among the IQ-850’s key features:
• Air, Nitrox, Gauge and Time Operating modes
• Dot matrix tissue compartment/message display window
• Vibration, audible, and visual alarms
• 2 mix switching feature: Mix 1(Air, 21-99%), Mix 2(21-99%)
• 25 hour/dive log memory, PC downloadable
• Advanced user safety settings and alarms
• Manual or Water activation
• Large alphanumeric and backlit display
• User replaceable battery (Battery: CR2032)
3. Common Sense Warnings
As is true of every piece of diving equipment, including all dive
computers, the IQ-850’s abilities are not limitless. There are certain
limitations and restrictions of which you must be aware, and certain
precautions you must take when using the IQ-850.

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The IQ-850 is designed for use by certied, recreational divers
who have maintained a sufcient level of knowledge and skill
prociency through a combination of formal training, ongoing study
and experience. It is not intended for use by persons who lack
the qualications, and thus may not be able to identify, assess,
and manage the risks scuba diving entails. Use of the IQ-850 in
conjunction with Enriched Air Nitrox (EANx) further requires that the
diver be trained and certied for Nitrox diving.
The IQ-850 is not intended for use by commercial, military or
technical divers whose activities may take them beyond the
commonly accepted depth limits for recreational diving.
The IQ-850 is designed for use by divers breathing either normal
compressed air or Enriched Air Nitrox (EANx) mixtures whose fraction
of Oxygen falls within a range of 22 to 99 percent.
Although the IQ-850 is capable of calculating decompression stop
requirements, this ability is provided as a safety feature only, should
a diver accidentally exceed the No-Decompression Limits (NDLs).
Dives requiring mandatory stage decompression carry substantially
greater risk than dives made well within no-decompression limits.
Decompression diving is widely believed to entail substantially
greater risk of decompression illness than dives made well within
the No-Decompression Limits (NDL). The IQ-850 provides
decompression stop information solely as a contingency in case
divers accidentally exceed the No-Decompression Limits. It is not
designed or intended for use as a tool to plan or execute dives
that participants know will entail mandatory decompression.
WARNINGS
Before using the IQ-850, it is extremely important you read the
following points as well as similar warning and caution notices
that appear throughout this manual. Failure to do so could result
in damage to or loss of equipment, serious personal injury, or
death.