Casio IDR-200 - Manual (Page 3)

Operation Guide IDR-200
3
TIME CALIBRATION SIGNAL RECEPTION PRECAUTIONS
• This clock is able to receive the time calibration signal transmitted from
Mainflingen, Germany (located 25kilometers southeast of Frankfurt).
Signal reception is possible within approximately 1,200 km of the
transmitter.
• Even when the clock is within the reception range, signal reception may
be impossible if the signal is blocked by mountains or other geological
formations between the clock and signal source.
• Signal reception is affected by weather, atmospheric conditions, and
seasonal changes.
• The time calibration signal bounces 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
atmospheric 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
Mainflingen. Note, however, that moving the clock while the time
calibration signal receive operation is taking place will make stable
reception impossible.
• 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.
Inside or among
buildings, or near
neon signs Inside a vehicle Near refrigerators
or other household
appliances, near
office equipment,
mobile phones or
wireless LAN
devices Near a
construction site,
airport, or other
sources of
electrical noise,
underground or in
tunnels, near
railroads,
highways, or radio
stations with
interfering
frequencies Near high-tension
power lines Among or behind
mountains
• 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.
Mainflingen 1200 km
USING THE CLOCK
Any of the following procedures can be used to set current date and time.
• Auto receive of the time calibration signal
• 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 (2:00, 5:00, 8:00, 11:00, 14:00, 17:00, 20:00,
23:00).
• A signal receive operation takes from two to ten minutes under good signal conditions.
Antenna Icon
If you see this: It means this
Icon is flashing. Signal reception is in progress.
Icon is not displayed. The last receive operation failed.
Icon is displayed (not flashing). The last receive operation was successful.
Wave OK Indicator
If you see this: It means this
OK is not displayed. All receive operations over the past 24 hours failed, or signal
reception is in progress.
OK is displayed. At least one of the receive operations over the past 24 hours was
successful.
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 (3) to receive again.
Manual Receive
• Press the WAVE button (3) to trigger a calibration signal receive operation.
• Use the WAVE button (3) to trigger a receive operation after replacing the clock’s batteries or if the auto receive
operation was not performed correctly for some reason.
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.