■ "ERR" appears on the display while I am using a sensor.
Subjecting the watch to strong impact can cause sensor malfunction or improper contact of internal
circuitry. When this happens, ERR (error) will appear on the display and sensor operations will be disabled.
If ERR appears while a reading operation is being performed in a sensor mode, restart the operation. If
ERR appears on the display again, it can mean there is something wrong with the sensor.
Even if battery power is at Level 1 (H) or Level 2 (M), the Digital Compass Mode, Barometer/
Thermometer Mode, or Altimeter Mode sensor may be disabled if there is not enough voltage available
to power it sufﬁ ciently. In this case, ERR will appear on the display. This does not indicate malfunction,
and sensor operation should resume once battery voltage returns to its normal level.
If ERR keeps appearing during a reading operation, it could mean there is a problem with the
■ The barometric pressure differential pointer does not appear on the display when I enter the
This could indicate sensor error. Try pressing B again.
The barometric pressure differential pointer is not displayed when the displayed current barometric
value is outside of the allowable measurement range (260 to 1,100 hPa).
■ Correct altitude readings are not possible.
Relative altitude is calculated based on changes in barometric pressure measurement by its pressure
sensor. To minimize the chance of reading error due to changes in barometric pressure, you should
update the reference altitude value before setting off on a trek or any other activity where you plan to take
altitude readings. For more information, see "To specify a reference altitude value" (page E-66).
World Time Mode
■ The time for my World Time City is off in the World Time Mode.
This could be due to incorrect switching between standard time and daylight saving time. See "To specify
standard time or daylight saving time (DST) for a city" (page E-96) for more information.
■ The watch does not resume operation after I expose it to light.
This can happen after the power level drops to Level 5 (page E-10). Continue exposing the watch to light
until the battery power indicator shows "H" or "M".
Time Calibration Signal
The information in this section applies only when LIS, LON, MAD, PAR, ROM, BER, STO, ATH, MOW,
HKG, BJS, HNL, ANC, YVR, LAX, YEA, DEN, MEX, CHI, NYC, YHZ, YYT, TPE, SEL, or TYO is selected
as the Home City. You need to adjust the current time manually when any other city is selected as the
■ The current time setting is off by one hour.
Perform the operation under "To get ready for a receive operation".
Signal reception on a day for
The time setting will be adjusted automatically as soon as signal
switching between standard
reception is successful.
time/daylight saving time (DST)
If you are unable to receive the time calibration signal, change the
may have failed for some reason.
standard time/daylight saving time (DST) setting manually.
■ Auto receive is not performed or you cannot perform manual receive.
The watch is not in the
Auto receive is performed only while the watch is in the Timekeeping
Timekeeping Mode or World
Mode or World Time Mode. Switch to either of these two modes.
Your Home City setting is wrong. Check your Home City setting and correct it, if necessary.
There is not enough power for
Expose the watch to light to charge it.
■ Signal reception is being performed successfully, but the time and/or day is wrong.
Your Home City setting is wrong. Check your Home City setting and correct it, if necessary.
The DST setting may be
Change the DST setting to Auto DST.
Other: Calibration; Manual reading (button operation); Barometric pressure graph; Barometric
pressure differential pointer; Barometric pressure change indicator
Measurement and display range: –10.0 to 60.0°C (or 14.0 to 140.0°F)
Display unit: 0.1°C (or 0.2°F)
Reading timing: Every ﬁ ve seconds in the Barometer/Thermometer Mode
Other: Calibration; Manual reading (button operation)
Measurement range: –700 to 10,000 m (or –2,300 to 32,800 ft.) without reference altitude
Display range: –10,000 to 10,000 m (or –32,800 to 32,800 ft.)
Negative values can be caused by readings produced based on a reference altitude or due to
Display unit: 1 m (or 5 ft.)
Current Altitude Data: Every second for the ﬁ rst 3 minutes, followed by every 5 seconds for
approximately 1 hour (0'05); every second for the ﬁ rst 3 minutes, followed by every 2 minutes for
approximately 12 hours (2'00)
Altitude Memory Data:
Manually saved records: 30 (altitude, date, time)
Auto saved values: One set of high altitude and its reading date and time, low altitude and its
reading date and time, total ascent and its save start date and time, total descent and its save
start date and time
Trek log data: High altitude, low altitude, cumulative ascent, cumulative descent for up to 14 treks
Other: Reference altitude setting; Altitude differential; Altitude auto measurement interval (0'05 or
Operation Guide 3414
■ ERR appears on the display after I perform bidirectional calibration.
If - - - appears and then changes to ERR (error) on the calibration screen, it means that there is something
wrong with the sensor.
If ERR disappears after about one second, try performing the calibration again.
If ERR keeps appearing, contact your original dealer or nearest authorized CASIO distributor to have
the watch checked.
Whenever you have a sensor malfunction, take the watch to your original dealer or nearest authorized
CASIO distributor as soon as possible.
■ What causes incorrect direction readings?
Incorrect bidirectional calibration. Perform bidirectional calibration (page E-38).
Nearby source of strong magnetism, such as a household appliance, a large steel bridge, a steel
beam, overhead wires, etc., or an attempt to take direction readings on a train, boat, etc. Move away
from large metal objects and try again. Note that digital compass operation cannot be performed inside
a train, boat, etc.
■ What causes different direction readings to produce different results at the same location?
Magnetism generated by nearby high-tension wires is interfering with detection of terrestrial magnetism.
Move away from the high-tension wires and try again.
■ Why am I having problems taking direction readings indoors?
A TV, personal computer, speakers, or some other object is interfering with terrestrial magnetism
readings. Move away from the object causing the interference or take the direction reading outdoors.
Indoor direction readings are particularly difﬁ cult inside ferro-concrete structures. Remember that you will
not be able to take direction readings inside of trains, airplanes, etc.
■ The display shows the ERR indicator when I check the result of the latest receive operation.
You are wearing or moving the
watch, or performing a button
operation during the signal
The watch is in an area with
poor reception conditions.
You are in an area where signal
reception is not possible for
The calibration signal is not
being transmitted for some
■ The current time setting changes after I set it manually.
You may have the watch conﬁ gured for auto receive of the time calibration signal (page E-17), which will
cause the time to be adjusted automatically according to your currently selected Home City. If this results
in the wrong time setting, check your Home City setting and correct it, if necessary (page E-28).
Accuracy at normal temperature: ±15 seconds a month (with no signal calibration)
Timekeeping: Hour, minutes, seconds, p.m. (P), year, month, day, day of the week
Time format: 12-hour and 24-hour
Calendar system: Full Auto-calendar pre-programmed from the year 2000 to 2099
Other: Three display formats (day of the week/day screen, month/day screen, barometric pressure
graph screen); Home City code (can be assigned one of 48 city codes); Standard Time / Daylight
Saving Time (summer time)
Year display on setting screen only.
Time Calibration Signal Reception: Auto receive 6 times a day (5 times a day for the Chinese calibration
signal) ; Remaining auto receives cancelled as soon as one is successful; Manual receive;
Receivable Time Calibration Signals: Mainﬂ ingen, Germany (Call Sign: DCF77, Frequency: 77.5
kHz); Anthorn, England (Call Sign: MSF, Frequency: 60.0 kHz); Fort Collins, Colorado, the
United States (Call Sign: WWVB, Frequency: 60.0 kHz); Fukushima, Japan (Call Sign: JJY,
Frequency: 40.0 kHz); Fukuoka/Saga, Japan (Call Sign: JJY, Frequency: 60.0 kHz) ; Shangqiu
City, Henan Province, China (Call Sign: BPC, Frequency: 68.5 kHz)
Digital Compass: 60 seconds continuous reading; 16 directions; Angle value 0° to 359°; Four direction
pointers; Calibration (bidirectional); Magnetic declination correction; Bearing Memory
Measurement and display range:
260 to 1,100 hPa (or 7.65 to 32.45 inHg)
Display unit: 1 hPa (or 0.05 inHg)
Reading timing: Daily from midnight, at two hour intervals (12 times per day); Every ﬁ ve seconds in
the Barometer/Thermometer Mode
Bearing Sensor Precision:
Direction: Within ±10°
Values are guaranteed for a temperature range of –10°C to 60°C (14°F to 140°F).
North pointer: Within ±2 digital segments
Pressure Sensor Precision:
Measurement accuracy: Within ±3hPa (0.1 inHg) (Altimeter accuracy: Within ± 75m (2,460 ft.))
Values are guaranteed for a temperature range of –10°C to 40°C (14°F to 104°F).
Precision is lessened by strong impact to either the watch or the sensor, and by temperature
Temperature Sensor Precision:
±2°C (±3.6°F) in range of –10°C to 60°C (14.0°F to 140.0°F)
Sunrise/sunset time display; selectable date
Measuring unit: 1/10 second
Measuring capacity: 999:59' 59.9"
Measuring accuracy: ±0.0006%
Measuring modes: Elapsed time, split time, two ﬁ nishes
Measuring unit: 1 second
Countdown range: 24 hours
Setting unit: 1 minute
Alarms: 5 Daily alarms (four one-time alarms; one snooze alarm); Hourly time signal
World Time: 48 cities (31 time zones)
Other: Daylight Saving Time/Standard Time
Keep the watch in an area where reception conditions are good
while the signal receive operation is performed.
See "Approximate Reception Ranges".
Check the website of the organization that maintains the time
calibration signal in your area for information about its down times.
Try again later.