Casio 5371 Operation Manual Download Page 5

E-32

 When you go from the Timekeeping Mode to the sensor modes, the sensor mode that you last used 

before returning to the Timekeeping Mode will be entered fi rst.

Whenever you enter a sensor mode, the watch will beep the number of times indicated by the numbers 
in the fi gure above. This will let you know what sensor mode you are entering. 

To enter a sensor mode from the Tide/Moon Data, Stopwatch, Countdown Timer, Alarm, World Time, or 
Receive Mode, fi rst enter the Timekeeping Mode and then press the applicable button.

General Functions (All Modes)

The functions and operations described in this section can be used in all of the modes.

Auto Return Features

 The watch automatically returns to the Timekeeping Mode from other modes if the crown is not pulled 

out and if no button operation is performed for a preset amount of time.

Mode Name

Approximate Elapsed Time

Tide/Moon Data, Alarm, Receive

3 minutes

Barometer, Thermometer

1 hour

Digital Compass

1 minute

Altimeter

1 hour minimum
12 hours maximum

Initial Screens

When you enter the Alarm or World Time Mode, the data you were viewing when you last exited the mode 
appears fi rst.

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Timekeeping

Use the Timekeeping Mode (

TIME

) to set and view the current time and date.

 Each press of 

C

 in the Timekeeping Mode will change screen contents as shown below.

Day of the week, 

month/day screen

Barometric pressure graph, 

date (month/day) screen

Time (hour, minute, 

second) screen

World Time screen

Moon age screen

Barometric
pressure graph

Day of week

Hour : Minutes

Moon age

Month Day

Hour : Minutes Second

Month Day

 Holding down 

C

 for at least two seconds while any screen is displayed will toggle the barometric 

pressure change indicator between ON and OFF.

  When ON, the barometric pressure graph is displayed along with the 

BARO

 indicator. 

 For information about how to check for signifi cant barometric pressure changes, refer to “Barometric 

Pressure Change Indications” (page E-49).

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Confi guring Home City Settings

There are two Home City settings: actually selecting the Home City and selecting either standard time or 
daylight saving time (DST).

To confi gure Home City and summer time settings

1. In the Timekeeping Mode, pull out the crown.

CITY

 will fl ash on the digital display indicating that the Home City 

setting can be changed.

2. Rotate the crown to move the second hand to the city code of the city 

you want you use as your Home City.

 For details about city codes, see the “City Code Table” at the back 

of this manual.

3. Press 

B

 to display the DST setting screen.

4. Rotate the crown away from you to cycle through the DST settings as 

shown below.

Auto DST (

AUTO

)

DST off (

OFF

)

DST on (

ON

)

 The displayed DST setting will not change if you rotate the crown 

towards you.

 After you change the Home City and/or DST setting, the hour 

and minute hands will automatically move to the appropriate time 
setting. The time shown on the digital display will also change 
accordingly.

City code

Second Hand

City code

Second Hand

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 The Auto DST (

AUTO

) setting will be available only when a city code that supports time calibration 

signal reception (page E-20) is selected as the Home City. While Auto DST is selected the DST 
setting will be changed automatically in accordance with time calibration signal data.

 Note that you cannot switch between standard time and daylight saving time (DST) while UTC is 

selected as your Home City.

5. After the settings are the way you want, push the crown back in.

 Daylight Saving Time is turned on when the 

DST

 indicator is on the display.

Note

 After you specify a city code, the watch will use UTC* offsets in the World Time Mode to calculate 

the current time for other time zones based on the current time in your Home City.

* Coordinated Universal Time, the world-wide scientifi c standard of timekeeping. 

The reference point for UTC is Greenwich, England.

 Selecting some city codes automatically makes it possible for the watch to receive the time 

calibration signal for the corresponding area. See page E-20 for details.

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Confi guring Current Time and Date Settings Manually

You can confi gure current time and date settings manually when the watch is unable to receive a time 
calibration signal.

To change the current time and date settings manually

1. In the Timekeeping Mode, pull out the crown. This will cause 

CITY

 to 

fl ash on the digital display.

2. Press 

C

.

 This will cause 

HOUR-MIN

 to fl ash on the digital display.

 The second hand will point to either 

A

 (a.m.) or 

P

 (p.m.)

 This is the time setting mode.

 In the following steps, each press of 

B

 cycles between settings 

as shown below.

Home City/DST

Hour, minute

Month, day

Hour

Year

City code

City code

E-37

3. Rotate the crown to change the minute setting.

 You can also use HS1 and HS2 high-speed movement (page E-6) to move the hands forward or 

back at high speed.

 The hour hand will move in accordance with minute hand movement.

To set the hour hand separately, go to step 4 of this procedure.

4. Press 

B

.

 This will cause 

HOUR

 to fl ash on the digital display.

5. Rotate the crown to change the hour setting.

 You can also use HS1 and HS2 high-speed movement (page E-6) to move the hands forward or 

back at high speed.

6. Press 

B

.

 This causes the currently set year, month, and day to appear on 

the digital display, with the year setting fl ashing.

7. Rotate the crown to adjust the year setting.

 You can also use HS1 high-speed movement (page E-6) to change 

this setting.

8. Press 

B

.

 This causes the currently set date (month, day) setting to fl ash on 

the display.

9. Rotate the crown to adjust the month and day setting.

 You can also use HS1 high-speed movement (page E-6) to change this setting. 

 Pressing 

B

 will return to the hour and minute setting screen.

10. After the settings are the way you want, push the crown back in.

 This will cause timekeeping to start from 0 seconds.

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Note

 For information about selecting a Home City and confi guring the DST setting, see “Confi guring 

Home City Settings” (page E-34).

 While 12-hour timekeeping is in use, 

P

 (p.m.) is displayed from noon to midnight (11:59 p.m.) 

A

 (a.m.) 

is displayed from midnight to noon (11:59 a.m.) These indicators are not displayed while 24-hour 
timekeeping (displays times from 00:00 to 23:59) is being used.

 The watch’s built-in full automatic calendar makes allowances for different month lengths and leap 

years. Once you set the date, there should be no reason to change it except after you have the 
watch’s rechargeable battery replaced or after power drops to Level 5 (page E-15).

 The day of the week changes automatically when the date changes.

 Refer to the pages shown below for more information on Timekeeping Mode settings.

- Button operation tone on/off: “To turn the button operation tone on or off” (page E-99)
- Illumination duration setting: “To change the illumination duration” (page E-96)
- Enabling and disabling power saving: “To turn Power Saving on or off” (page E-99)

To switch between 12-hour and 24-hour timekeeping

1. Pull out the crown.

2. Press 

B

 fi ve times.

 This causes the current timekeeping setting (

12H

 or 

24H

) to fl ash 

on the digital display.

3. Rotate the crown to select either 12-hour (

12H

) or 24-hour (

24H

)

timekeeping.

4. After the setting is the way you want, push the crown back in.

E-39

Hand Home Position Adjustment

If the watch is exposed to strong magnetism or impact, its hands can go out of alignment with the time on 
the digital display. This can result in incorrect time indication even though a time calibration signal is being 
received. Your watch has an auto hand position correction feature that normally adjusts the hands. Should 
you notice that the hand positions are not correct, perform the operation below to correct them manually.

To adjust home positions

1. In the Timekeeping Mode, pull out the crown.
2. Hold down 

A

 for at least fi ve seconds until 

HAND SET

 fl ashes and 

then

HAND ADJ

 appears on the digital display.

 This will start home position adjustment, which causes all of the 

watch hands to move to 12 o’clock.

 After the hands stop moving, 

 will appear on the digital 

display.

Important!

 Before performing step 3, below, make sure that all hands have 

returned to the 12 o’clock position. Pushing the crown back in 
while any hand is not at the 12 o’clock position will not perform 
home position adjustment.

3. Push the crown back in.

 This will cause all of the hands (small hand, hour hand, minute 

hand, second hand) to return to their normal positions.

Note

After performing home position adjustment, enter the Timekeeping Mode and check to make sure that the 
analog hands and the display indicate the same time. If they do not, perform home position adjustment 
again.

Wait until all of the hands 
move to 12 o'clock.

Wait until all of the hands 
move to 12 o'clock.

Operation Guide 5371

Summary of Contents for 5371

Page 1: ...stration Note that the product illustrations in this manual are intended for reference only and so the actual product may appear somewhat different than depicted by an illustration Crown Small hand Se...

Page 2: ...Temperature Readings E 73 To take temperature readings E 73 To calibrate the temperature sensor E 75 Checking the Current Time in a Different Time Zone E 76 To enter the World Time Mode E 76 To con gu...

Page 3: ...a sleep state while it is in the Stopwatch Mode or Countdown Timer Mode The watch will not enter a sleep state while barometric pressure change indicator is enabled page E 50 To recover from the slee...

Page 4: ...tion is disabled under any of the following conditions While power is at Level 3 L or lower page E 15 While the watch is in the power recovery mode page E 17 When the watch is in the function sleep st...

Page 5: ...n the Timekeeping Mode pull out the crown This will cause CITY to ash on the digital display 2 Press C This will cause HOUR MIN to ash on the digital display The second hand will point to either A a m...

Page 6: ...ed barometric pressure value changes to if a measured barometric pressure falls outside the range of 260 hPa to 1 100 hPa 7 65 inHg to 32 45 inHg The barometric pressure value will reappear as soon as...

Page 7: ...hown on page E 31 3 Pull out the crown This will cause the current barometric pressure reading value to ash on the digital display The timekeeping hour minute second hands will move to 2 o clock 4 Rot...

Page 8: ...on it are aligned with the actual directions of your location Basically what you are doing is aligning north on the map with north as indicated by the watch Note that map reading skills and experienc...

Page 9: ...Altitude differential Altitude differential E 68 Specifying the Altitude Differential Measurement Range You can use the procedure below to select either 100 meters or 1 000 meters as the altitude diff...

Page 10: ...30 minutes for the case of the watch to reach the surrounding temperature E 76 Checking the Current Time in a Different Time Zone You can use the World Time Mode to display the current time in any on...

Page 11: ...appears You can select any date between January 1 2000 and December 31 2099 You can use this screen to check the Moon age on the speci ed date To view the tide level for a speci ed date and time go t...

Page 12: ...Time Signal which will cause the watch to beep twice every hour on the hour To enter the Alarm Mode Use B to select the Alarm Mode ALARM as shown on page E 30 About one second after ALARM appears on t...

Page 13: ...The current time setting is off by hours Your Home City setting may be wrong page E 34 Check your Home City setting and correct it if necessary The current time setting is off by one hour If you are u...

Page 14: ...r system Full Auto calendar pre programmed from the year 2000 to 2099 Other Five display formats day of the week month day barometric pressure change month day hour minute second World Time hour minut...

Page 15: ...ens 2 JED Jeddah 3 THR Tehran 3 5 DXB Dubai 4 City Code City UTC Offset GMT Differential KBL Kabul 4 5 KHI Karachi 5 DEL Delhi 5 5 KTM Kathmandu 5 75 DAC Dhaka 6 RGN Yangon 6 5 BKK Bangkok 7 HKG Hong...

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