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Specifications; To Get Ready For A Receive Operation - Casio 3445 Operation Manual

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Possible Cause
Alarm starts to sound while
An ongoing receive operation is canceled if an alarm starts to
calibration signal receive is in
You are in an area where signal
reception is not possible for
See "Approximate Reception Ranges".
some reason.
Check the website of the organization that maintains the time
The calibration signal is not
calibration signal in your area for information about its down times.
being transmitted for some
Try again later.
■ 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-30).
■ The current time setting is off by one hour.
Possible Cause
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)
may have failed for some reason.
If you are unable to receive the time calibration signal, change the
standard time/daylight saving time (DST) setting manually.
Specifi cations
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/Date screen, Tide Graph, Surface Time); 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;
Receive Mode
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)
Diving Functions:
Water depth measurement range: 0.0 meters to 80.0 meters (0.0ft~262.5ft)
Water depth measurement unit: 0.1 meter (0.5ft)
Water depth measurement: 6 hours (in seconds up to 180 minutes, in minutes thereafter)
Diving Mode: Auto measurement start/stop at a depth of 1.5 meters
Log Record Memory 20 log records (dive start date and time, dive time, maximum depth, water
temperature low for each record)
Surface time display: Up to 48 hours
Ascent Rate Alarm: 5-second alarm
Measuring unit: 1/100 second
Measuring capacity: 99:59'59.99"
Measuring accuracy: ±0.0006%
Measuring modes: Elapsed time, split time, two fi nishes
Countdown Timer:
Measuring unit: 1 second
Countdown range: 24 hours
Setting unit: 1 minute
Timer alert time: 10 seconds
Alarms: 5 Daily alarms (with one snooze alarm); Hourly time signal
World Time: 48 cities (31 time zones)
Other: Daylight Saving Time/Standard Time
Illumination: LED light; Selectable illumination duration (approximately 1.5 seconds or 3 seconds); Auto
Light Switch (Full Auto Light operates only in the dark)
Other: Battery power indicator; Power Saving; Alarm test; Button operation tone on/off
Operation Guide 3445
■ Auto receive is not performed or you cannot perform manual receive.
Possible Cause
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.
Time Mode.
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.
■ Signal reception is being performed successfully, but the time and/or day is wrong.
Possible Cause
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.
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-91) for more information.
Digital Compass: Bearing angle measurement range 0° to 359°; 16 directions (Not displayed in the
Diving Mode); direction calibration (fi gure 8, 3-point); magnetic declination correction; 60-second
continuous readings (Diving Mode: 20 seconds); bearing memory (Disabled in the Diving Mode.);
auto level correction; east, west, north, south indication (4-direction graphic pointer)
Water/Air Temperature Measurement:
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)
Other: Calibration; Manual reading (button operation)
Water depth sensor accuracy:
–0.5 to 1.0 m* (guaranteed accuracy temperature range: –10°C to 60°C)
* Indicated depths are for seawater (Specifi c Gravity: 1.025)
Bearing Sensor Precision:
Direction: Within ±10°
Values are guaranteed for a temperature range of 10°C to 40°C (50°F to 104°F).
North pointer: Within ±2 digital segments
Temperature Sensor Precision:
±2°C (±3.6°F) in range of –10°C to 60°C (14.0°F to 140.0°F)
Time Stamp:
20 records (year, month, day, hour, minute, second); additional information (water depth, bearing,
Tide level (Tide Graph), Moon phase, Moon age date selection
Selectable time (Tide Graph only)
Power Supply: Solar panel and one rechargeable battery
Approximate battery operating time: 7 months (from full charge to Level 4) under the following
Alarm: 10 seconds/day
Light: 1.5 seconds/day
Time calibration receive: 4 minutes/day
Display on 18 hours/day, sleep mode 6 hours/day
Direction reading: 20 times/month (60 seconds continuous reading)
Diving: 50 dives/year
– Water depth measurement: 73 minutes (60 minutes diving)/dive
– Light: 3.0 seconds (two 1.5-second operations)/dive
– Rapid Ascent Alarm: 5 seconds/dive
Approximate battery life can be shortened by more frequent light operation.
Specifi cations are subject to change without notice.


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