Casio DQR 300U User Manual

MA0402-EB  
Operation Guide DQR-300U  
Main unit  
Sub-unit  
1
F
C
°C/ °F  
SELECT  
RESET  
°C/ °F  
SELECT  
RESET  
CASIO  
TEST  
TEST  
D
E
HUMIDITY  
MAX/MIN  
TEMP.  
MAX/MIN  
7
9
8
3
2
A
B
SET  
CLEAR  
DOWN()  
WAVE  
5
UP(  
+
)
HUMIDITY  
MAX/MIN  
TEMP.  
MAX/MIN  
RE-SYNC  
CLEAR  
4
0
6
SET  
UP(  
)
+
DOWN(—)  
WAVE  
SELECT  
°C/ °F  
RE-SYNC  
SELECT  
°C/ °F  
RESET  
RESET  
°C/ °F  
°C/ °F  
SELECT  
RESET  
SELECT  
RESET  
TEST  
TEST  
¡
¡
1
Operation Guide DQR-300U  
TIME CALIBRATION SIGNAL RECEPTION PRECAUTIONS  
USING THE CLOCK  
This clock is able to receive the time calibration signal transmitted from  
Rugby, England. Signal reception is possible within approximately  
1,000 km of the transmitter.  
Even when the clock is within the reception range, signal reception is  
impossible if the signal is blocked by mountains or other geological  
formations between the clock and signal source.  
Any of the following procedures can be used to set current date and time.  
Auto receive of the time calibration signal  
Rugby  
1,000 kilometers  
Manual receive of the time calibration signal  
Manual setting without using the time calibration signal  
Auto Receive  
The clock receives the time calibration signal eight times each day (1:00, 4:00, 7:00, 10:00, 13:00, 16:00, 19:00,  
Signal reception is affected by weather, atmospheric conditions, and  
seasonal changes.  
22:00).  
A signal receive operation takes from two to ten minutes under good signal conditions.  
A receive indicator shows the current status of the receive operation.  
The time calibration signal is bounced off the ionosphere. Because of  
this, such factors as changes in the reflectivity of the ionosphere, as well  
as movement of the ionosphere to higher altitudes due to seasonal  
atmosaheric changes or the time of day may change the reception  
range of the signal and make reception temporarily impossible.  
Reception is best when the back of the clock is facing toward Rugby.  
Note, however, that moving the clock while the time calibration signal  
receive operation is taking place will make stable reception impossible.  
Antenna Icon  
Receive in progress: Icon flashes  
Receive failed: Icon not displayed  
Receive successful: Icon displayed  
500 kilometers  
Wave OK Indicator  
Receive in Progress: OK not displayed  
All receives over the past 24 hours failed: OK not displayed  
At least one successful receive over the past 24 hours: OK displayed  
Think of the clock as acting like a TV or radio when it is receiving the calibration signal.When receiving indoors,  
move to a location as near as possible to a window. Proper signal reception can be difficult or even impossible  
under the conditions listed below.  
Unsuccessful Signal Reception  
The antenna icon disappears from the display when a signal receive operation is unsuccessful. If this happens,  
try changing the position or orientation of the clock, and press the WAVE button (4) to receive again.  
Manual Receive  
Press the WAVE button (4) to start a calibration signal receive operation.  
Use the WAVE button (4) to perform a receive operation after replacing the clocks batteries or if the auto  
receive operation was not performed correctly for some reason.  
The clock beeps and display illumination flashes for about three seconds when a receive operation trigged by the  
WAVE button (4) is successful.  
Inside, among  
buildings, or near  
neon signs  
Inside a vehicle  
Near refrigerators  
Near a  
Near high-tension  
power lines  
Among or behind  
mountains  
or other household construction site,  
appliances, near  
office equipment,  
mobile phones or  
wireless LAN  
airport, or other  
sources of  
electrical noise,  
underground or in  
tunnels, near  
railroads,  
Important!  
Do not perform any button or switch operation while a signal receive operation is in progress.  
The time calibration signal includes both Standard Time and Daylight Saving Time (summer time) data.  
The DST indicator appears on the display when Daylight Saving Time (summer time) data is received.  
devices.  
highways, or radio  
stations with  
interfering  
Setting the Time and Date Manually  
frequencies.  
When using the clock in an area that is outside of the range of the transmitter in Rugby or in an area where signal  
reception is impossible for some reason, you need to manually adjust the time as required.  
1. Press the SET button (3) to cycle through the setting screens as shown below.  
Signal reception is normally better at night than during the day.  
Radio interference can make signal reception impossible.  
Strong electrostatic charge can result in the wrong time being set.  
The alarm does not operate during signal reception.  
Normal Timekeeping Screen  
Year Setting Screen  
12-hour/24-hour Timekeeping Screen  
Month and Day Setting Screen  
Time Setting Screen  
3
Operation Guide DQR-300U  
2. While the screen you want is on the display, use the Alarm Time Set buttons (2) to change the digits that are  
flashing.  
BATTERY REPLACEMENT  
Low Battery Warning  
A
indicator appears on the display to let you know when battery power is low. Replace the batteries as soon  
Press + to increase  
the flashing digits.  
Press  
to decrease  
UP(  
)
+
DOWN()  
the flashing digits.  
as possible.  
Note that the  
indicator appears on both the main unit and sub-unit when sub-unit battery power goes low.  
Holding down + or changes the flashing digits at high speed.  
To replace main unit batteries  
You can set the year in the range of 2000 to 2039. The day of the week is set automatically in accordance with  
the date setting.  
Replace batteries whenever the display of the clock becomes dim and difficult to read.  
1. Open the battery compartment cover as shown in the illustration.  
2. Remove all of the old batteries.  
Pressing + or while the Time Setting Screen is on the display causes the seconds count to be reset to 00.  
Each press of + or while the 12-hour/24-hour Timekeeping Screen is on the display toggles between 12-hour  
and 24-hour timekeeping.  
3. Load a full set of new batteries. Make sure that their positive (+) and negative () ends face in the correct  
directions. If you load batteries incorrectly, they can burst and damage the clock.  
4. Replace the battery compartment cover.  
3. After making the settings you want, use the SET button (3) to display the Normal Timekeeping Screen.  
The clock automatically returns to the Normal Timekeeping Screen if you leave a setting screen on the display for  
about three minutes without performing any operation.  
5. Press the RESET button (6). Be sure to press the RESET button (6) after replacing batteries.  
To replace sub-unit batteries  
1. Open the stand so you can see the back cover.  
2. Remove the back cover screw, and then open the back cover.  
3. Remove both old batteries.  
4. Load new batteries. Make sure that their positive (+) and negative () ends face in the correct directions.  
If you load batteries incorrectly, they can burst and damage the product.  
5. Replace the back cover and secure it in place with the screw.  
6. Press the RESET button (D). Be sure to press the RESET button (D) after replacing batteries.  
7. Press the RE-SYNC button (A).  
USING THE ALARM  
The alarm sounds and the light turns on when the alarm time you set is reached. You can also use the Alarm  
Mode selector (5) to select the snooze alarm feature.  
Setting the Alarm Time  
Use the Alarm Time Set buttons (2) to set the alarm time.  
Pressing the Alarm Time Set buttons (2) causes the alarm time to appear in place of the date on the display.  
Battery precautions  
Keep batteries out of the reach of small children. If a battery is accidentally swallowed, contact your physician  
Press to change the  
alarm time setting (+)  
Press to change the  
alarm time setting (  
immediately.  
UP(  
)
+
DOWN()  
)
Be sure to load the batteries with their positive (+) and negative () ends facing correctly.  
Never mix old and new batteries, or batteries of different brands.  
Never charge the batteries that come with the clock.  
Holding down + or changes the digits at high speed.  
Should batteries ever leak while in the clock, wipe out the fluid with a cloth, taking care not to let any get onto  
your skin.  
Turning the Alarm On and Off  
Replace the batteries at least once a year, even if the current batteries are working properly.  
The batteries that come with the clock lose some of their power during transport and storage.  
Use the Alarm Mode selector (5) on the side of the clock to turn the alarm on and off, and to select the snooze  
feature.  
THERMOMETER FUNCTIONS  
Alarm Mode selector  
SNZ  
Description  
The alarm sounds at the preset time for one minute, and seven  
more times every five minutes thereafter. Even if you stop the  
alarm sound by pressing the SNOOZE/LIGHT button (1), the  
alarm operation is performed again five minutes later.  
flashes on the display to indicate that the  
snooze feature is activated.  
Both the main unit and the sub-unit are equipped with their own temperature sensors. Temperature data measured  
by the sub-unit is sent by wireless transfer to the main unit. You can toggle the main unit display between the main  
unit temperature reading and the sub-unit temperature reading. This makes it possible to view both the indoor and  
outdoor temperature on the main unit display.  
( )  
The indicator  
Temperature Measurements  
Both the main unit and the sub-unit take temperature measurements every 16 seconds.  
The temperature display shows LOfor temperatures below 50°C (58°F) and HIfor temperatures above  
70°C (158°F).  
ALM ON  
The alarm sounds at the preset time for one minute.  
Though temperature readings are displayed up to 0°C (32°F) and greater than 41°C (105°F), note that such  
readings are actually outside the guaranteed temperature range of this clock.  
( )  
ALM OFF  
Switching between Celsius and Fahrenheit  
Push the °C/ °F button (0) to select either Celsius (°C) or Fahrenheit (°F).  
The alarm does not sound.  
The alarm time appears in place of the date on the display whenever the Alarm Mode selector (5) is set to ON  
or SNZ.  
Celsius (°C)  
Fahrenheit (°F)  
The light also turns on for the first four seconds that the alarm sounds.  
The alarm sound changes over four levels as it sounds.  
Stopping the Alarm  
°C/ °F button (0)  
When alarm is sounding, press the SNOOZE/LIGHT button (1) to stop it. When the snooze feature is turned  
on, the alarm will sound again in about five minutes.  
To turn off the snooze feature, slide the Alarm Mode selector (5) to OFF.  
°C  
°F  
USING THE LIGHT  
Pressing the SNOOZE/LIGHT button (1) turns on the light and illuminates the display for easy reading in the  
dark.  
Important!  
Overuse of the light can shorten battery life.  
4
Operation Guide DQR-300U  
Switching between Main Unit and Sub-unit Temperature Data  
HYGROMETER FUNCTIONS  
Press the SELECT button (B) to toggle the display between the main unit (INDOOR) temperature and the sub-  
Both the main unit and the sub-unit are equipped with their own humidity sensors. Humidity data measured by the  
sub-unit is sent by wireless transfer to the main unit. You can toggle the main unit display between the main unit  
humidity reading and the sub-unit humidity reading. This makes it possible to view both the indoor and outdoor  
humidity on the main unit display.  
unit (OUTDOOR) temperature.  
Main unit temperature: INDOOR indicator displayed  
Sub-unit temperature: OUTDOOR indicator displayed  
The display does not change to the sub-unit (OUTDOOR) temperature if no data has been received from the sub-  
unit yet.  
Humidity Measurements  
Holding down SELECT button (B) for about two seconds causes the display to continually toggle between the  
main unit and sub-unit temperature at five-second intervals.  
Both the main unit and the sub-unit take humidity measurements every 16 seconds.  
The humidity display shows LOfor humidity below 10% and HIfor humidity above 90%.  
Main unit  
Sub-unit  
OUTDOOR  
Switching between Main Unit and Sub-unit Humidity Data  
Press the SELECT button (B) to toggle the display between the main unit (INDOOR) humidity and the sub-unit  
(OUTDOOR) humidity .  
Main unit humidity: INDOOR indicator displayed  
Sub-unit humidity: OUTDOOR indicator displayed  
INDOOR  
The display does not change to the sub-unit (OUTDOOR) humidity if no data has been received from the sub-unit  
yet.  
SELECT button (B)  
High Temperature and Low Temperature Memory  
The following data is stored in memory automatically.  
Main unit high temperature and low temperature  
Sub-unit high temperature and low temperature  
Holding down SELECT button (B) for about two seconds causes the display to continually toggle between the  
main unit and sub-unit humidity at five-second intervals.  
Main unit  
Sub-unit  
OUTDOOR  
INDOOR  
SELECT button (B)  
Current temperature and humidity  
High Humidity and Low Humidity Memory  
The following data is stored in memory automatically.  
Main unit high humidity and low humidity  
Sub-unit high humidity and low humidity  
MAX/MIN TEMP. button (7)  
Main unit high temperature and low temperature  
Sub-unit high temperature and low temperature  
Current temperature and humidity  
MAX/MIN HUMIDITY button (8)  
Main unit high humidity and low humidity  
Sub-unit high humidity and low humidity  
To clear the high temperature and low temperature data memory, press the CLEAR button (9).  
New data starts to be stored after memory is cleared.  
CLEAR button (9)  
5
Operation Guide DQR-300U  
To clear the high humidity and low humidity data memory, press the CLEAR button (9).  
New data starts to be stored after memory is cleared.  
USING THE WEATHER FORECAST FEATURE  
A built in pressure sensor makes it possible to forecast upcoming weather over the next 12 hours based on  
changes in barometric pressure. Note that these forecasts are not absolutely accurate, and are intended for  
general reference only.  
Weather Forecasts  
Barometric pressure readings are taken every 15 minutes. Weather forecasts are based on the last six readings.  
Upcoming weather forecasts are displayed using the graphic indicators shown below.  
Sunny  
Sunny, some clouds  
Cloudy  
CLEAR button (9)  
Rain  
Stormy  
USING THE SUB-UNIT  
Upcoming weather trends are indicated as shown below.  
Data Transfer from the Sub-unit  
Data is transferred from the sub-unit to the main unit every three minutes.  
The sub-unit is able to send data to the main unit up to an unobstructed distance of about 30 meters.  
The data receive status is indicated on the display of the main unit by the icons shown below.  
Improving weather  
Deteriorating weather  
Stable weather  
Receive successful  
Receive unsuccessful  
If a receive operation is not successful for some reason, the display of the main unit shows dashes () in place of  
the sub-unit temperature and humidity values.  
If you experrience problems with data transfer, press the RE-SYNC button (A) to synchronize the two units.If  
this does not eliminate the problem,try changing the positions or orientations of the main unit and sub-unit.  
The transferred data includes temperature and humidity data.  
MAIN UNIT/SUB UNIT COMMUNICATION PRECAUTIONS  
Sub Unit Location  
Certain environmental conditions can greatly reduce the communication range.  
Avoid the following locations for the sub-unit.  
Switching between Celsius and Fahrenheit  
Push the °C/ °F button (F) to toggle between Celsius (°C) and Fahrenheit (°F).  
Celsius (°C)  
Fahrenheit (°F)  
°C/ °F button (F)  
Switching between Current Temperature and Humidity  
Press the SELECT button (C) to toggle the display between the current temperature and current humidity.  
Holding down SELECT button (C) for about two seconds causes the display to continually toggle between the  
temperature and humidity at five-second intervals.  
Inside, among  
buildings, or near  
neon signs  
Inside a vehicle  
Near refrigerators  
Near a  
Near high-tension  
power lines  
or other household construction site,  
appliances, near  
office equipment,  
mobile phones or  
wireless LAN  
airport, or other  
sources of  
electrical noise,  
underground or in  
tunnels, near  
railroads,  
Temperature  
Humidity  
devices.  
highways, or radio  
stations with  
interfering  
SELECT button (C)  
frequencies.  
Location  
Place the sub-unit in a location where it will not be exposed to rain, direct sunlight, or other elements.  
Locating the sub-unit near a device that transmits radio signals using the same frequency as this product can  
cause communication failure of this product.  
Avoid using multiple products in the same area. Doing so can cause mixing of their signals.  
RADIO, EMC AND SAFETY REGULATIONS  
This product complies with technical specifications required under EN 301 489-3,EN 300-220-3 and EN 60950.  
6

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