Operating instructions The Radio-Controlled Clock 98
Contents
1. Operating instructions The Radio Controlled Clock 98 1003 With the Radio Controlled Clock you can have the most accurate time within the continent It can receive the time signal transmitted by Physikalisch Technische Bundesanstalt PTB of Germany which is regulated by 4 atomic clocks and in average deviates less than 1 second in 2 million years PTB transmit the time signal DCF77 77 5kHz continuously from Mainflingen 25 km southeast of Frankfurt am Main It is expected that the signal can cover a distance of 2 000 km from the transmitter However some environmental effects see Attention below may affect the transmitting distance For more information please study the WEB page of PTB at http www ptb de Attention The Radio Controlled Clock obtains the accurate time with wireless technology Same as all wireless devices the receiving ability may be affected by but not limited to the following conditions Long transmitting distance Nearby mountains and valleys Among tall buildings Near railway high voltage cable etc Near freeway airport etc Near construction site Inside concrete buildings Near electrical appliances Bad weather Inside moving vehicles Nearby metallic structures id 3JBss 2 25 MON T Specifications Model 7182 7192 Receive 77 5kHz DCF77signal transmitted by PTB at Mainflingen Germany Automatic time adjustment after signal reception Calen2. dar with day of the week display from 1 January 1998 to 31 December 2097 Hour Minute and Second display 12 or 24 hour format Crystal oscillator frequency 32 768kHz Time accuracy atomic clock better than 1 second in 2 million years Time accuracy free run average within 30 seconds per month Batteries AA size x 2 Battery life about 1 year Basic Operation The Radio Controlled Clock should be able to set the correct time after installing the batteries Installing the Batteries Pull the tab on the battery door located at the bottom of the clock Put in the batteries with proper polarity and Response after installing batteries First reception after power up The clock initializes at 12 00 AM Friday 1 January It will start to search for the DCF77 signal for 10 minutes after installing the batteries In an optimal condition the correct time can be displayed within 3 to5 minutes The tower and wave icon will keep scrolling after you start the clock It is normal since this indicates the radio control circuitry inside the clock is working Successful reception is indicated by the Wave OK icon Within the first three hours If the clock failed to receive the signal in the first reception after power up it will repeat a 10 minute reception every 30 minutes This operation stops once the time signal is received After the first three hours If no signal can be received within the fir
3. st 3 hours the clock will repeat a reception every 3 hours This operation will not stop until signal can be received Automatic time update The clock will automatically update its time twice a day at 01 00 1 00 AM and 13 00 1 00 PM If the automatic time update failed the clock will repeat the update every three hours until it SUCCESS Manual time update Reception can be star1ed anytime by pressing the WAVE button at the front Note Frequent use of this feature may affect battery life Caution In some unusual occasions the clock may affected by noise and responses abnormally In such conditions press the RESET button to resume normal operation Important It is recommended to put the Radio Controlled Clock near window facing Mainflingen near Frankfurt am Main Germany Please move the clock to another location if difficulty in signal reception is encountered 12HR 24HR International Time Display Press the 12HR 24HR button to choose the desired display format IIAM or IIPM will be displayed in 12HR format To Set Calendar Slide to CALENDAR Press MONTH DATE or YEAR buttons to set your desired calendar Remark Incorrect calendar will be automatically adjusted i e February 30 will be adjusted to February 1 April 31 will be adjusted to April 1 To Set Time Slide to TIME SET press HR or MIN button to set your desired time LOCK Function After you set time slide to the LOCK posi
4. tion to protect the set time against unnecessary changes caused by touching of buttons Note The Radio Controlled feature is disabled when the switch is away from the LOCK position Attention Care Avoid exposing your timer to extreme temperatures water or severe shock Avoid contact with any corrosive materials such as perfume alcohol or cleaning agents Battery Replace the battery when the display becomes weak or the alarm level declines Used batteries have to be put in the specially reserved collecting receptacles Guarantee Please change the battery before complaining No guarantee if the instrument is handled or opened improperly Keep away from children
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