Casio PRG-270 - User Manual

MO1308-EB
© 2013 CASIO COMPUTER CO., LTD.
Congratulations upon your selection of this CASIO watch.
Applications
The built-in sensors of this watch measure direction, barometric pressure, temperature and altitude.
Measured values are then shown on the display. Such features make this watch useful when hiking,
mountain climbing, or when engaging in other such outdoor activities.
Warning !
• The measurement functions built into this watch are not intended for taking measurements that
require professional or industrial precision. Values produced by this watch should be considered
as reasonable representations only.
• When engaging in mountain climbing or other activities in which losing your way can create a
dangerous or life-threatening situation, always use a second compass to confi rm direction readings.
• Note that CASIO COMPUTER CO., LTD. assumes no responsibility for any damage or loss
suffered by you or any third party arising through the use of this product or its malfunction.
E E-1
ENGLISH
Important!
• Your watch’s Altimeter Mode calculates relative altitude based on changes in barometric pressure
measurement by its pressure sensor. For more information, see pages E-51 and E-65.
• Immediately before embarking or otherwise taking altitude readings, be sure to specify a reference
altitude. If you don’t the readings produced by the watch probably will not be very accurate. For more
information, see “To specify a reference altitude value” (page E-58).
• To ensure correct direction readings by this watch, be sure to perform bidirectional calibration before
using it. The watch may produce incorrect direction readings if you do not perform bidirectional
calibration. For more information, see “To perform bidirectional calibration” (page E-30).
E-2
About This Manual
• Depending on the model of your watch, digital display text appears
either as dark fi gures on a light background, or light fi gures on a dark
background. All examples in this manual are shown using dark fi gures
on a light background.
• Button operations are indicated using the letters shown in the
illustration.
• 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.
E-3
Things to check before using the watch
1. Check the battery power level.
Is “
H
” or “
M
” displayed for the battery power indicator (page E-11)?
Go to step 2.
Power is low. Charge the watch by placing it in a location
where it is exposed to light. For details, see “Charging the
Watch” (page E-9).
NO YES
YES
Does any one of the following conditions exist?
• Battery power indicator shows “L” and “LOW” is flashing on the
display.
• “CHG” is flashing on the display.
• The face is blank.
The watch is charged
sufficiently.
For details about
charging, see
“Charging the Watch”
(page E-9).
NEXT
Battery power
indicator
E-4
2. Check the Home City and the daylight saving time (DST) setting.
Use the procedure under “To confi gure Home City and summer time settings” (page E-20) to confi gure
your Home City and daylight saving time settings.
Important!
• World Time Mode and Sunrise/Sunset Mode data depend on correct Home City, time, and date settings
in the Timekeeping Mode. Make sure you confi gure these settings correctly.
3. Set the current time.
See “Confi guring Current Time and Date Settings” (page E-22).
The watch is now ready for use.
E-5
Contents
E-2 About This Manual
E-3 Things to check before using the watch
E-9 Charging the Watch
E-14 To recover from the sleep state
E-15 Mode Reference Guide
E-19 Timekeeping
E-20 Confi guring Home City Settings
E-20 To confi gure Home City and summer time settings
E-22 Confi guring Current Time and Date Settings
E-22 To change the current time and date settings
E-25 Taking Direction Readings
E-26 To take a direction reading
E-30 To perform bidirectional calibration
E-31 To perform magnetic declination correction
E-32 To store a direction angle reading in Bearing Memory
E-34 To set a map and fi nd your current location
E-35 To fi nd the bearing to an objective
E-36 To determine the direction angle to an objective on a map and head in that direction
(Bearing Memory)
E-6
E-40 Specifying Temperature, Barometric Pressure, and Altitude Display Units
E-40 To specify temperature, barometric pressure, and altitude display units
E-42 Taking Barometric Pressure and Temperature Readings
E-42 To take barometric pressure and temperature readings
E-47 To enable or disable the barometric pressure change alert
E-49 To calibrate the pressure sensor and the temperature sensor
E-51 Using the Altimeter Mode
E-52 To select the altitude screen format
E-53 To select the altitude auto reading interval
E-55 To take altitude readings
E-56 To specify the altitude differential start point
E-57 To use the altitude differential value
E-58 To specify a reference altitude value
E-59 To save a reading manually
E-62 To start trek log value updating
E-62 To stop trek log value updating
E-68 Precautions Concerning Simultaneous Altitude and Temperature Readings
E-69 Viewing Altitude Records
E-69 To view altitude records
E-73 To delete all manually saved data
E-73 To delete data in a specifi c memory area
E-7
E-75 Looking up Sunrise and Sunset Times
E-75 To enter the Sunrise/Sunset Mode
E-76 To view the sunrise/sunset time for a particular date
E-77 To look up the sunrise and sunset times for a specifi c location
E-79 Using the Stopwatch
E-79 To enter the Stopwatch Mode
E-79 To perform an elapsed time operation
E-79 To pause at a split time
E-80 To measure two fi nishes
E-81 Using the Countdown Timer
E-81 To enter the Countdown Timer Mode
E-81 To specify the countdown start time
E-82 To perform a countdown timer operation
E-82 To stop the alarm
E-83 Using the Alarm
E-83 To enter the Alarm Mode
E-84 To set an alarm time
E-85 To turn an alarm and the Hourly Time Signal on and off
E-86 To stop the alarm
Operation Guide 3415

Summary

About This Manual

Things to check before using the watch

Check the battery power level

Verify battery charge and take action if low.

Check the Home City and the daylight saving time (DST) setting

Configure Home City and DST for accurate timekeeping.

Set the current time

Adjust the watch's current time and date settings.

Timekeeping

Day of the Week;Date Screen

Displays day of the week and date.

Month;Day Screen

Displays month and day.

Barometric Pressure Graph Screen

Shows a graph of recent barometric pressure readings.

Configuring Home City Settings

To configure Home City and summer time settings

Select Home City and set daylight saving time (DST).

Configuring Current Time and Date Settings

To change the current time and date settings

Adjust the watch's current time and date parameters.

Taking Direction Readings

To take a direction reading

Calibrating the Bearing Sensor

Bidirectional Calibration

Magnetic Declination Correction

Using Bearing Memory

Using the Digital Compass While Mountain Climbing or Hiking

To set a map and find your current location

To find the bearing to an objective

To determine the direction angle to an objective on a map and head in that direction (Bearing Memory)

Digital Compass Precautions

Magnetic North and True North

Explains the difference between magnetic and true north.

Location

Precautions on where to take readings.

Storage

Specifying Temperature, Barometric Pressure, and Altitude Display Units

To specify temperature, barometric pressure, and altitude display units

Set display units for pressure, temperature, and altitude.

Taking Barometric Pressure and Temperature Readings

Barometric Pressure Graph

Reading the Barometric Pressure Graph

Barometric Pressure Differential Pointer

Reading Barometric Pressure Differential Pointer

Interpret the pointer indicating pressure change.

Barometric Pressure Change Indications

Reading the Barometric Pressure Change Indicator

Understand pressure change alerts.

Enabling or Disabling Display of the Barometric Pressure Change Indicator

To enable or disable the barometric pressure change alert

Control display of pressure change alerts.

Pressure Sensor and Temperature Sensor Calibration

To calibrate the pressure sensor and the temperature sensor

Adjust pressure and temperature sensors for accuracy.

Barometer and Thermometer Precautions

Using the Altimeter Mode

Getting Ready

Prepare for altitude readings by setting format and interval.

Selecting the Altitude Screen Format

Choose between screen formats for altitude display.

Selecting the Altitude Auto Reading Interval

To select the altitude auto reading interval

Set how often altitude readings are taken.

Taking Altitude Readings

To take altitude readings

Advanced Altimeter Mode Operations

Using an Altitude Differential Value

Measure altitude change from a reference point.

Using the Altitude Differential Value While Mountain Climbing or Hiking

To use the altitude differential value

Apply altitude difference for navigation.

Using Reference Altitude Values

To specify a reference altitude value

Set a known altitude for accurate measurements.

Types of Altitude Data

Auto Save Values

Trek Log Values

To start trek log value updating

To stop trek log value updating

How does the altimeter work?

Altimeter Precautions

Viewing Altitude Records

To view altitude records

Access saved altitude data.

Manually saved records

Auto saved values

Trek Log Values

To delete all manually saved data

To delete data in a specific memory area

Looking up Sunrise and Sunset Times

To enter the Sunrise;Sunset Mode

Access the mode for sunrise/sunset time lookups.

To view the sunrise;sunset time for a particular date

To look up the sunrise and sunset times for a specific location

Using the Stopwatch

To enter the Stopwatch Mode

Access the stopwatch function.

To perform an elapsed time operation

Measure elapsed time.

To pause at a split time

Pause timing to record split times.

To measure two finishes

Using the Countdown Timer

To enter the Countdown Timer Mode

Access the countdown timer function.

To specify the countdown start time

Set the initial countdown duration.

To perform a countdown timer operation

Start and stop the countdown timer.

Using the Alarm

To enter the Alarm Mode

Access the alarm settings.

To set an alarm time

Configure a specific alarm time.

To turn an alarm and the Hourly Time Signal on and off

Checking the Current Time in a Different Time Zone

To enter the World Time Mode

Access the World Time Mode.

To view the time in another time zone

To specify standard time or daylight saving time (DST) for a city

Illumination

To turn on illumination manually

Activate the display light manually.

To change the illumination duration

Set how long the light stays on.

About the Auto Light Switch

To turn the auto light switch on and off

Illumination Precautions

Other Settings

To turn the button operation tone on and off

Enable or disable button press sounds.

To turn Power Saving on or off

Troubleshooting

Time Setting

Resolve issues with incorrect time settings.

Sensor modes

Address issues with unit settings.

ERR appears on the display while I am using a sensor.

ERR appears on the display after I perform bidirectional calibration.

What causes incorrect direction readings?

What causes different direction readings to produce different results at the same location?

Why am I having problems taking direction readings indoors?

The barometric pressure differential pointer does not appear on the display when I enter the Barometer;Thermometer Mode.

Correct altitude readings are not possible.

The time for my World Time City is off in the World Time Mode.

Charging

The watch does not resume operation after I expose it to light.

Resolve charging issues.

Specifications

Power Supply

Overview

1. General Functions and Operation
2. Timekeeping Mode
3. Home City and Current Time/Date Settings
4. Digital Compass Mode
5. Calibration and Correction
6. Bearing Memory
7. Practical Applications (Mountain Climbing/Hiking)
8. Barometer/Thermometer Mode
9. Calibration of Pressure and Temperature Sensors
10. Altimeter Mode
11. Reference Altitude Values
12. Altitude Data Storage
13. Viewing Altitude Records
14. Sunrise/Sunset Mode
15. Stopwatch Mode
16. Countdown Timer Mode
17. Alarm Mode
18. World Time Mode
19. Illumination
20. Other Settings
21. Power Saving
22. Maintenance Features
23. Charging the Watch
24. Power Levels
25. Power Recovery Mode
26. Storage
27. Precautions

This document describes the operation of a CASIO watch, model 3415, which incorporates built-in sensors for measuring direction, barometric pressure, temperature, and altitude. These features make the watch particularly useful for outdoor activities like hiking and mountain climbing.

General Functions and Operation

The watch features 10 distinct modes: Timekeeping, Digital Compass, Barometer/Thermometer, Altimeter, Sunrise/Sunset, Data Recall, Stopwatch, Countdown Timer, Alarm, and World Time. Users can navigate between these modes by pressing specific buttons. To return to the Timekeeping Mode from any other mode, the user can hold down the 'D' button for approximately two seconds. The watch also has an auto-return feature, automatically reverting to Timekeeping Mode if no button operations are performed for a certain period, which varies by mode (e.g., 3 minutes for Sunrise/Sunset, Data Recall, Alarm, and Digital Compass; 1 hour minimum for Altimeter; 12 hours maximum for Barometer/Thermometer; 1 hour for setting screens). If a screen with flashing digits is left unattended for two or three minutes, the watch automatically exits the setting screen. The 'A' and 'C' buttons are used for scrolling through data on setting screens, with holding them down enabling high-speed scrolling.

Timekeeping Mode

The Timekeeping Mode displays the current time and date. Users can cycle through different screen contents, including the day of the week/date, month/day, and a barometric pressure graph, by pressing the 'D' button.

Home City and Current Time/Date Settings

To configure Home City settings, the user holds down 'D' in Timekeeping Mode for at least two seconds. The display will show "SET Hold" and "CITY", then scroll through the selected city code and name. Users can scroll through available city codes using 'A' (East) and 'C' (West) buttons. Pressing 'D' again displays the DST setting screen, where 'A' toggles between Daylight Saving Time (ON) and standard time (OFF). Once settings are complete, pressing 'D' twice exits the setting screen. The watch uses UTC offsets to calculate times for other time zones based on the Home City time.

To change current time and date settings, the user follows a similar procedure, holding down 'D' in Timekeeping Mode. After the city code display, pressing 'D' cycles through various settings like DST, 12/24-hour format, Power Saving, illumination duration, button operation tone, seconds, hour, minutes, year, month, and day. 'A' and 'C' buttons are used to adjust the flashing item. Pressing 'D' twice exits the setting screen. The watch's full auto-calendar accounts for different month lengths and leap years, so the date only needs to be changed after a battery replacement or power drop to Level 5.

Digital Compass Mode

The Digital Compass Mode utilizes a built-in direction sensor to take direction readings. North is indicated by three graphic segments, and the watch displays literal direction indications and an angle value. To take a reading, the user ensures the watch is in Timekeeping or a sensor mode, places it on a flat surface (or keeps the wrist horizontal if worn), points the 12 o'clock position in the desired direction, and presses 'B'. "COMP" appears, followed by direction pointers, literal indicators, and an angle value. The watch continues to take readings automatically every second for up to 60 seconds. If the four pointers and direction letters do not appear, it may indicate that bearing memory information is displayed, and pressing 'B' will clear it. Pressing 'D' returns to Timekeeping Mode.

Calibration and Correction

To ensure correct direction readings, bidirectional calibration is recommended, especially if the watch becomes magnetized. This involves holding down 'B' in Digital Compass Mode, then pressing 'B' to calibrate the first direction, rotating the watch 180 degrees, and pressing 'B' again for the second direction. Magnetic declination correction allows inputting a magnetic declination angle (difference between magnetic north and true north) to indicate true north. This is done by holding down 'B' in Digital Compass Mode, pressing 'D', and using 'A' and 'C' to adjust the angle and direction (E for east declination, W for west declination, OFF for no correction).

Bearing Memory

Bearing Memory temporarily stores and displays a direction reading as a reference for subsequent digital compass readings. It shows the stored direction angle and a pointer. When taking new readings, both the current and stored direction angles are displayed. To store a reading, the user starts a digital compass reading (press 'B'), then presses 'C' during the 60-second reading operation. The stored angle flashes, and a new 60-second reading operation begins. Pressing 'C' again clears the stored reading and starts a new 60-second reading.

Practical Applications (Mountain Climbing/Hiking)

The digital compass can be used to set a map and find the current location by aligning the map's northerly direction with the watch's north indication. To find the bearing to an objective, the user sets the map, then aligns their body until the watch's north and the map's northerly direction are aligned, with the desired direction straight ahead. To determine the direction angle to an objective on a map and head in that direction, the user sets the map, points the watch's 12 o'clock position towards the objective, takes a compass reading, and records it in Bearing Memory. Then, they can advance while monitoring the Bearing Memory pointer.

Barometer/Thermometer Mode

This mode uses a pressure sensor for barometric pressure and a temperature sensor for temperature. To take readings, the user presses 'B' in Timekeeping or a sensor mode. "BARO" appears, and readings are displayed after about one second. The watch takes readings every five seconds for the first three minutes, then every two minutes. Pressing 'D' returns to Timekeeping Mode. Barometric pressure is displayed in hPa or inHg, and temperature in °C or °F. The watch automatically takes barometric pressure readings every two hours to produce a barometric pressure graph and differential pointer. The barometric pressure graph shows a chronological history of pressure readings, indicating rising pressure for improving weather and falling pressure for deteriorating weather. The barometric pressure change indicator alerts the user to significant pressure changes with a beep and flashing graphic segments. This indicator can be enabled or disabled by holding down 'B' in Barometer/Thermometer Mode until "INFO Hold ON" or "INFO Hold OFF" flashes.

Calibration of Pressure and Temperature Sensors

The pressure and temperature sensors are factory-calibrated but can be recalibrated if significant errors are noticed. To calibrate, the user takes a reading with another reliable device, then in Barometer/Thermometer Mode, holds down 'D' for at least two seconds until "TEMP" appears. Pressing 'D' cycles between temperature and barometric pressure calibration. 'A' and 'C' adjust the values. Pressing 'D' returns to the Barometer/Thermometer screen.

Altimeter Mode

The Altimeter Mode takes altitude readings based on air pressure measurements. Users can select one of two screen formats: Altitude Tendency Graph or Relative Altitude. The altitude auto reading interval can be set to 0'05 (one-second intervals for 3 minutes, then five-second intervals for 1 hour) or 2'00 (one-second intervals for 3 minutes, then two-minute intervals for 12 hours). To take readings, the user presses 'A' in Altimeter Mode. The current altitude is displayed in meters or feet. The watch can also display an altitude differential value, showing the change in altitude from a specified reference point. To set this, the user selects Screen 2 in Altimeter Mode and presses 'D'.

Reference Altitude Values

To minimize reading errors, users should update the reference altitude value before activities. This is done by holding down 'D' in Altimeter Mode, then using 'A' and 'C' to adjust the reference altitude value. Pressing 'D' exits the setting screen.

Altitude Data Storage

The watch can record three types of altitude data: manually saved records (up to 30, with date and time), auto save values (high/low altitude, total ascent/descent, with date and time), and trek log values (high/low altitude, cumulative ascent/descent for up to 14 treks, with date and time). Auto save values are updated automatically during altitude auto measurements. Trek log updating, when enabled, continuously updates values even if the Altimeter Mode is exited. To start trek log updating, the user holds down 'A' in Altimeter Mode for five seconds. To stop, they hold down 'A' again for five seconds.

Viewing Altitude Records

In Data Recall Mode, users can view manually saved records, auto save values, and trek log values. To access, the user selects Data Recall Mode (REC), then uses 'D' to select the memory area. 'A' and 'C' scroll through the records.

Sunrise/Sunset Mode

This mode displays sunrise and sunset times for a particular date and location. To enter, the user presses 'D' in Timekeeping Mode. The times are based on the specified city code, latitude, and longitude. Users can scroll through dates using 'A' and 'C'. To look up times for a specific location, the user first configures the Home City settings, then adjusts latitude and longitude in the Timekeeping Mode settings.

Stopwatch Mode

The stopwatch measures elapsed time, split times, and two finishes. To enter, the user presses 'D' in Timekeeping Mode. 'A' starts/stops/restarts the timer, and 'C' resets it. 'C' also pauses at a split time.

Countdown Timer Mode

The countdown timer can be set to a preset time and sounds an alarm when it reaches zero. To enter, the user presses 'D' in Timekeeping Mode. To specify the start time, the user holds down 'D', then uses 'A' and 'C' to adjust the hour and minute settings. 'A' starts/stops/restarts the timer, and 'C' resets it. The alarm sounds for ten seconds and can be stopped by pressing any button.

Alarm Mode

The watch has five independent daily alarms (four one-time, one snooze) and an Hourly Time Signal. To enter, the user presses 'D' in Timekeeping Mode. 'A' and 'C' scroll through alarm screens. To set an alarm time, the user holds down 'D', then uses 'A' and 'C' to adjust the hour and minute. To turn an alarm or the Hourly Time Signal on/off, the user selects it and presses 'C'. The snooze alarm sounds up to seven times at five-minute intervals.

World Time Mode

This mode displays the current time in one of 48 cities (31 time zones) around the globe. To enter, the user presses 'D' in Timekeeping Mode. 'A' (East) and 'C' (West) scroll through city codes.

Illumination

The watch's display is illuminated for easy reading in the dark. The auto light switch automatically turns on illumination when the watch is angled towards the face (more than 40 degrees from parallel to the ground). To turn on illumination manually, the user presses 'B' in any mode. The illumination duration can be set to 1.5 or 3 seconds by holding down 'D' in Timekeeping Mode, cycling to "LIGHT", and using 'A' to toggle the duration. The auto light switch can be turned on/off by holding down 'D' in Timekeeping Mode for three seconds.

Other Settings

The button operation tone sounds with each button press and can be turned on/off. To do this, the user holds down 'D' in Timekeeping Mode, cycles to "MUTE" or "KEY", and uses 'A' to toggle.

Power Saving

When turned on, Power Saving enters a sleep state automatically when the watch is left in the dark for a certain period. In "display sleep," the display is off, but functions are enabled. In "function sleep," all functions are disabled, but timekeeping is maintained. To turn Power Saving on/off, the user holds down 'D' in Timekeeping Mode, cycles to "POWER SAVING", and uses 'A' to toggle.

Maintenance Features

Charging the Watch

The watch's face is a solar panel that generates power from light, charging a built-in rechargeable battery. It charges whenever exposed to light. For optimal charging, the watch should be placed in a location with strong light exposure, such as outdoor sunlight. When wearing the watch, ensure the face is not blocked by clothing. The watch may enter a sleep state if its face is blocked.

Power Levels

The watch displays its power level using an indicator:

• H (Level 1): All functions enabled.
• M (Level 2): All functions enabled.
• L (Level 3): Illumination, beeper, and sensor operation disabled. A flashing "LOW" indicates very low battery power, requiring immediate charging.
• CHG (Level 4): Except for current time and "CHG" indicator, all functions and display indicators disabled.
• Level 5: All functions disabled. If the battery drops to Level 5, all functions are disabled, and settings revert to factory defaults. Once the battery reaches Level 2 (M), settings must be reconfigured.

Power Recovery Mode

Performing multiple sensor, illumination, or beeper operations in a short period may cause all battery power indicators (H, M, L) to flash, indicating Power Recovery Mode. During this time, illumination, alarm, countdown timer alarm, hourly time signal, and sensor operations are disabled until power recovers (approximately 15 minutes). If all indicators flash along with "CHG", the battery level is very low, and the watch needs bright light exposure. Frequent flashing of all indicators suggests low remaining power.

Storage

To prevent the watch from becoming magnetized, which can deteriorate the precision of the bearing sensor, it should be stored away from magnets and other strong magnetic sources, such as household appliances. If magnetization is suspected, bidirectional calibration should be performed.

Precautions

• Measurement Precision: The watch's measurement functions are not intended for professional or industrial precision; values should be considered reasonable representations only. When engaging in dangerous activities like mountain climbing, always use a second compass for confirmation. CASIO COMPUTER CO., LTD. is not responsible for damages or losses due to product use or malfunction.
• Temperature: Allowing the watch to become very hot can cause the LCD to black out. The display should return to normal at lower temperatures. Storing the watch in the dark or blocking light exposure for long periods can drain power.
• Altitude Readings: The Altimeter Mode calculates relative altitude based on barometric pressure changes. A reference altitude should be specified before taking readings for accuracy. Incorrect readings can occur due to changes in barometric pressure, atmospheric conditions, and elevation. Do not take readings while ascending or descending a mountain.
• Direction Readings: Bidirectional calibration is crucial for correct direction readings. Incorrect calibration can lead to wrong bearing sensor readings. Avoid taking direction readings near strong magnetic sources (e.g., permanent magnets, metal concentrations, high tension wires, household appliances) or in trains, boats, or airplanes. Indoor readings, especially in ferro-concrete structures, are unreliable.
• Auto Light Switch: Always ensure safety when using the auto light switch, especially during activities that could result in accidents or injury. Turn off the auto light switch when riding a bicycle or operating a motor vehicle to prevent sudden, unintended illumination that could cause distraction.
• Sensor Malfunction: If "ERR" appears on the display during sensor use, it may indicate a sensor malfunction or improper contact. Restart the operation. If "ERR" persists, the sensor may be faulty. If battery power is low (Level 1 or 2), sensors may be disabled, and "ERR" will appear, but this is not a malfunction.
• Time Setting: If the current time is off by hours, check and correct the Home City setting.
• Display Units: When Tokyo (TYO) is selected as the Home City, altitude, barometric pressure, and temperature units are automatically set to meters, hectopascals, and Celsius, respectively, and cannot be changed.

Casio PRG-270 Specifications