Operation Guide 5311

Contents

E-3 About This Manual

E-4 Using the Crown

E-4 To lock the crown

E-5 To unlock the crown

E-5 To pull out, rotate, or push the crown in

E-8 Things to check before using the watch E-14 Charging the Watch

E-19 To recover from the sleep state

E-20 Radio Controlled Atomic Timekeeping

E-25 To get ready for a receive operation

E-28 To perform manual receive

E-29 To check the result of the latest receive operation

E-30 To turn auto receive on and off

E-10

E-32 Mode Reference Guide

E-33 To determine the watch’s current mode

E-33 To return to the Timekeeping Mode from any other mode

E-34 To select a mode

E-35 Timekeeping

E-36 Configuring Home City Settings

E-36 To configure Home City settings

E-39 To switch between standard time and summer time manually

E-41 Configuring Current Time and Day Settings Manually

E-41 To change the current time setting manually

E-44 To change the current day setting manually

E-48 Taking Direction Readings

E-50 To take a direction reading

E-56 To perform bidirectional calibration

E-58 To perform northerly calibration

E-11

E-63 Checking the Current Time in a Different Time Zone

E-79

Adjusting Home Positions

E-64 To view the time in another time zone

 

E-81 To adjust home positions

E-67 To swap your Home City and World Time City

E-83

Troubleshooting

E-69 Using the Stopwatch

E-95

Specifications

E-70 To enter and exit the Stopwatch Mode

 

 

E-70 To perform an elapsed time operation

 

 

E-70 To perform flyback timing

 

 

E-72 Using the Countdown Timer

 

 

E-73 To specify the countdown start time

 

 

E-74 To perform a countdown timer operation

 

 

E-74 To stop the alarm

 

 

E-75 Using the Alarm

 

 

E-76 To change the alarm time setting

 

 

E-78 To turn the alarm on or off

 

 

E-78 To stop the alarm

 

 

E-12

 

E-13

 

 

 

Charging the Watch

The face of the watch is a solar panel that generates power from light. The generated power charges a built-in rechargeable battery, which powers watch operations. The watch charges whenever it is exposed to light.

Charging Guide

Whenever you are not

 

When wearing the watch,

wearing the watch, be sure

 

makes sure that its face is

 

to leave it in a location

 

not blocked from light by

where it is exposed to light.

 

the sleeve of your clothing.

ξ Best charging

 

ξ The watch may enter a

performance is achieved

 

sleep state (page E-19) if its

by exposing the watch to

 

face is blocked by your

light that is as strong as

 

sleeve even only partially.

possible.

 

 

Warning!

Leaving the watch in bright light for charging can cause it to become quite hot. Take care when handling the watch to avoid burn injury. The watch can become particularly hot when exposed to the following conditions for long periods.

ξOn the dashboard of a car parked in direct sunlight

ξToo close to an incandescent lamp

ξUnder direct sunlight

Important!

ξKeep the watch in an area normally exposed to bright light when storing it for long periods. This helps to ensure that power does not run down.

ξStoring the watch for long periods in an area where there is no light or wearing it in such a way that it is blocked from exposure to light can cause power to run down. Make sure that the watch is exposed to bright light whenever possible.

Checking the Current Power Level

Certain functions will be disabled when the power level is low. If the power level is low, leave the watch in a location where its face (solar panel) is exposed to light.

E-14

E-15

 

 

Low Power



Moves at two-second intervals.

Low power conditions are indicated by the movement of the x Second Hand in the Timekeeping Mode.

ξIf the x Second Hand is moving normally at one-second intervals, power is at Level 1.

ξIf the x Second Hand is moving at two-second intervals, power is at Level 2, which is quite low. Expose the watch to light as soon as possible so it can charge.

Low Battery Alert (Hand Movement and Function Status)

Level

Hand Movement

Function Status

1

Normal.

All functions enabled

 

 

 

 

x Second Hand moves at

Beeper and time

2

calibration signal

two-second intervals.

 

reception disabled.

 

 

3

x Second Hand stopped.

All functions disabled

ξWhen power drops to Level 3, all settings (including timekeeping) will be cleared. Recharging the battery will reset all settings to their initial factory defaults.

ξWhen the watch is at Level 3, exposing it to light for a while will cause the x Second Hand to move to the position of second 57. This indicates that charging has started.

Power Recovery Mode

The watch is designed to go into a power recovery mode that stops hand operation temporarily whenever power suddenly drops below a certain level due to continuous signal reception or other operations over a short period. Note that all operations are disabled while the watch is in the power recovery mode.

The hands will move to the correct positions and the watch will resume normal operation after power recovers (in about 15 minutes). Putting the watch in a location where it is exposed to light will help power to recover sooner.

E-16

E-17

 

 

Charging Times

 

Daily

 

 

 

Level Change *2

 

 

Exposure Level (Brightness)

 

 

Level 3

 

Level 2

 

 

Level 1

Operation *1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Outdoor sunlight (50,000 lux)

8 minutes

 

 

2 hours

 

 

27 hours

Window sunlight (10,000 lux)

30 minutes

 

 

6 hours

 

 

99 hours

Window sunlight on cloudy day

48 minutes

 

 

10 hours

 

 

161 hours

(5,000 lux)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Indoor fluorescent lighting

8 hours

 

 

111 hours

 

 

– – –

(500 lux)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

*1 Approximate exposure each day to generate power for normal daily operation.

*2 Approximate exposure to take power up one level.

ξThe above times are for reference only. Actual times depend on lighting conditions.

ξFor details about the operating time and daily operating conditions, see the “Power Supply” section of the Specifications (page E-97).

Power Saving

Power Saving enters a sleep state (second hand sleep or function sleep) whenever the watch is left for a certain period in an area where it is dark.

Elapsed Time in Dark

Operation

60 to 70 minutes (second

x Second Hand only stopped at 12 o’clock, all other functions

hand sleep)

enabled

6 or 7 days (function sleep)

ξ All functions, including analog timekeeping, disabled

ξ Internal timekeeping maintained

 

 

 

ξThe watch will not enter a sleep state between 6:00 AM and 9:59 PM. If the watch is already in a sleep state when 6:00 AM arrives, however, it will remain there.

ξThe watch will not enter a sleep state while it is in the Stopwatch Mode or Countdown Timer Mode.

To recover from the sleep state

Move the watch to a well-lit area or press any button.

E-18

E-19