Citizen D20 User Manual

Setting Instructions for

Movement Caliber D200, D202, D206, D208

CONTENTS (click on a topic)

1.FEATURES OF THIS WATCH

a.Various warning functions

i.Ascending Speed Warning

ii.Depth Indication Warning

iii.Battery Lifetime Forecast

iv.Water Sensor Check Warning

v.Abnormal Pressure Sensing Error Warning

2.SPECIFICATIONS

3.NAME OF EACH PART

a.Symbol marks indicated by the dot indicator and their meanings

4.HOW TO CHANGE THE MODE [FUNCTION]

5.TIME AND CALENDAR MODE

6.HOW TO SET THE TIME AND CALENDAR

7.ALARM MODE

8.DIVING MODE

a.Meanings of "valid diving" and "invalid diving" used for this watch

9.SURFACE MODE

10.LOG MODE

11.TRANSFER MODE

12.ALL-RESET PROCEDURE

13.BATTERY LIFETIME FORECAST AND BATTERY

14.CARE OF YOUR WATCH

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1. FEATURES OF THIS WATCH

This product is a digital diver's watch that has an electronic depth meter.

1.Since a water sensor is installed, this watch start measuring the depth as soon as the user starts diving.

2.This watch measures the atmospheric temperature, as well as the water temperature while the user is diving.

3.Various log data are record while the user is diving.

4.After finishing diving, the data recorded in this watch can be transferred to a personal computer by using the communication unit, and then the data can be checked with the personal computer.

x Applicable personal computer: IBM PC/AT or compatible, with keyboard and monitor.

5.This watch measures time automatically after the valid diving is finished (up to 24 hours). This function is used to check the rest time on the water surface (Surface function).

6.This watch has water-resistant performance and various warning functions necessary for safe diving.

Various warning functions

This watch has five warning functions to avoid dangers and troubles that may occur during diving.

These warning functions indicate only reference values for safe diving. The degree of each danger depends on the experience, physical condition, or diving condition of the user. This watch does not assure safety even if it does not turn on any alarm.

1.Ascending speed warning

Warning system

x	"SLOW" flashes in the dot indicator window.
	o	Beeping sound comes out for 5 sec.
Operating condition
x	[Depth indication in diving mode]
	o	The ascending speed exceeds 0.3 m/sec for 5 sec continuously.
Countermeasures
x	Lower the ascending speed.

2. Depth indication error warning

Warning system

x "ERR" flashes in the dot indicator window.

oThe accuracy of the depth indication is not assured while the error is indicated.

Operating condition

x [Depth indication in diving mode]

o The surfacing or diving speed exceeds 4 m/sec.

Countermeasures

x After diving mode is finished, if the watch can be returned to the normal mode, there is not a problem in it.

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3. Battery lifetime forecast

Warning system

"BAT." flashes in the dot indicator window.

o The watch cannot be set to diving mode.

o The alarm does not sound. • The lamp does not light up.

Operating condition

x Depth indication in diving mode or normal model

o The battery reaches almost the end of its life

Countermeasures

x If the battery is replaced, all the diving data are deleted. If any necessary diving data is stored in the watch, take the record of the log data or transfer it to a personal computer.

4. Water sensor check warning

Warning system

x "CHEK" is indicated in the dot indicator window. o The watch cannot be set to the diving mode.

Operating condition

x [Ready state in diving mode or normal mode]

oThe water sensor has been turned on for 1 hour on land or in water shallower than 1 m.

Countermeasures

x If the water sensor is wet: Wipe it with dry cloths.

x If the water sensor is stained: Wash in fresh water with a soft cloth.

5. Abnormal pressure sensing error warning

Warning system

x "ERR" is indicated in the dot indicator window. x The watch cannot be set to the diving mode.

Operating condition

x	[Normal mode)
x	An abnormal atmospheric pressure is detected.

Countermeasures

x Do not use this watch at a place higher than about 4,000 m.

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2. SPECIFICATIONS (subject to change without prior notice)

Type

Time accuracy (At normal temperature)

Depth meter accuracy

Indication method

Operating temperature range of time system

Time

Calendar

Temperature indication (including the lowest water temperature indicated in the log mode)

Present depth indication

Maximum depth indication

Average depth

Month and date of diving

Start time of diving

Finish time of diving

Diving time

Number of diving times

Functions

Digital diver's watch with depth meter, thermometer, and water sensor

±20 seconds/month

±(3% of indicated value + 30cm (1ft)] max.

Only when used at a fixed temperature range *Using temperature range: 10’C-40’C(50’F-104’F) Depth meter accuracy is affected by change of temperature however.

Digital indication

-1 O-C - 60-C (1 4-F - 140-F)

Hour, minute, and second

Month, date, and day

-5'C - 14"C (Unit: 1 IC) ±3'C/1 5'C - 400C (Unit: 1 OC) ±20C 23OF - 57OF (Unit: 1 OF) ±6"F/59OF - 104"F (Unit: 1 IF) ±4F

1 .0 m - 80.0 m (Unit: 10 cm) (O m is indicated when shallower than 1.0 m], 4 ft - 260 ft (Unit: 1 ft)

1.0 m - 80.0 m (4 ft – 260ft)

1.0 m - 80.0 m (4 ft - 260 ft)

Month and date

Hour and minute

0 min - 199 min

1 - 9

•Time and calendar mode

•Surface mode

•Alarm mode

•Log mode7

•Diving mode

•Transfer mode

•Depth indication error warning function

•Battery lifetime forecast function

•Water sensor check warning function

•Ascending speed warning function

•Abnormal pressure sensing error warning function

Additional functions

Battery

Battery Life

Additional Notes

•Water resistance for 200m diving

•Water sensor (Used as transfer terminal)

Lithium battery (CR2025)

Average of 2 years after new battery is installed. (Varies with use and number of dives)

Movement Calibers D200 and D202 are metric (meters) measurement versions

Movement Calibers D206 and D208 are standard (feet) measurement versions

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3. Name of Each Part

[Symbol marks indicated by the dot indicator and their meanings]

Mode indication

Time and calendar mode Alarm mode

Temperature is being measured

Log mode (When profile data is not recorded)

Log mode (When profile data is recorded)

Surface mode (Surface interval time) (Time after valid diving is finished)

Transfer mode

Data is being transferred

Diving Mode (Diver Swims)

Each Mode Indication: Ready for Diving

Ready for diving Warning indication

Surfacing speed warning

Various checks

Battery lifetime forecast

Various errors

For the explanation of the "Profile data", refer to section "10. Log mode".

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4. HOW TO CHANGE THE MODE (FUNCTION)

The mode of this watch is changed when the (M) (bottom left) button is pushed or the water sensor is wet with water.

5. TIME AND CALENDAR MODE

In this mode, the present time and calendar are indicated.

In the normal time mode, the LED (light-emitting diode) at the 12o'clock position flashes every hour on the hour for 3 seconds. (Example: 07: 00: 00, 07: 00: 01, 07: 00: 02)

If the (A)(lower right) button is pushed in the time and calendar mode, the watch measures the temperature (First temperature is indicated). In this mode, the temperature is measured at the interval of 10 seconds for 3 minutes. "- - 'C" is indicated, however, until the first measurement is finished.

After 3 minutes, the watch automatically starts measuring the second temperature at the interval of 30 minutes. The temperature measurement range is -5'C - 40'C. The watch cannot measure the temperature correctly, however, if it is put on the wrist. When measuring the correct temperature, take it off.

In the time and calendar mode, if the @ button is pushed, the flashing operation of the LED can be checked. (For 5 seconds)

If the (C)(upper left) button is pushed and held, the lamp is kept turned on for 10 seconds. The lamp goes off about 1.5 seconds after the (C)(upper left) button is released.

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