DCF-MAN-UK.
Contents
1. every second for a short period 0 1 or 0 2 sec except at the 59 second When the reception is good the clock will show the correct time within 5 minutes After each fully received minute the signal quality indicator on the display top right corner will show 5 lines increasing in length If the indicator has less than 5 lines after a period of 10 minutes the reception is not good in this case relocate the receiver Atomic DCF77 Clock Utility software There are several programs on the CD to set the clock and to set the time in your PC The programs are located in different folders for different operating systems Each folder contains the software and some documentation if needed WIN9598 Programs for Windows 95 98 Millennium and XP WIN31311 Programs for Windows 3 1 and 3 11 WINNT Programs for Windows NT and 2000 DOS Programs for MS DOS and to synchronize to a Novell file server NOVELL File server Network Loadable Module software LINUX Program for linux SUN Program for Sun solaris For MSWindows 95 98 Millennium NT and 2000 a simple program can be used to set all settings of the DCF77N clock This DCFSetup program will be explained in the next chapter To set the clock in other operating systems you have to use a terminal program For more information see chapter Terminal commands Atomic DCF77 Clock DCFSETUP PROGRAM DCFSetup 95 98 NT Millennium and 2000 With this program you can program all sett2. is transmitted from Mainflingen near Frankfurt Main Germany N 50 01 E 09 00 It contains complete information about time date and season related time changes Full transmission of the DCF signal lasts 59 seconds The frequency used by the DCF transmitter is 77 5 kHz The DCF77N clock can be used in all countries having central European time Pack list Quickstart document DCF77N clock DCF Receiver with cable RS232 cable 9p Dconn female female Utility CD Atomic DCF77 Clock INSTALLATION Connecting the DCF77N clock On the back of the unit there are several connectors and a push button switch 230VAC HD15 special Computer Receiver 230V relay functions RS232 switch output e 230V AC Use a grounded mains connection e 230V relay output 230VAC switched mains output for use with timer e 230V relay switch Manual ON switch for the relay output e Computer RS232 DB9M connector for serial connection to a computer e Receiver DB9F connector for DCF77 receiver e HD15 special functions 1 Alarm relay NO NC 2 Timer relay contact NO NC 3 24V Slave clock 1 second minute pulse 4 Extra RS232 connection for future expansion Connection Switch off the computer Find a spot for the DCF77N main unit out of direct sunlight Connect the clock to your PC with the serial cable Plug the mains plug into a properly grounded wall outlet Switch on the computer To
3. OFF gt N is switch time number 0 7 HH is the hour MM is minutes SS is seconds ON OFF to indicate on or off for the mains relay output To delete a switch time lt 21 27 gt N DEL example 22 1 11 10 00 ON Every Tuesday at 11 10 00 The output is switched On Factory settings To reset the clock to its factory state you have to enter the following two commands 99 100 11 Atomic DCF77 Clock Programming information The next chapter describes the commands you can use to get the time from the clock to your computer This information can be used to write your own driver for operating systems that are not supported by Elproma Serial settings asynchronic Baudrate 19200 Databits 8 Stopbits 1 Parity Even Time request Request send to the time 1 75h 117 dec Time request The answer from the DCF PC Clock is send to the computer at the half of the second can be the same second 2 78h 120 dec Time request The answer from the DCF PC Clock is send to the computer at the beginning of the next second Automatical time transmission The following byte can be send to the clock 01Xxxxxxx Bin XXXXXX IS a binairy number from O to 63 which is the time interval in minutes Every time this interval has passed the clock will send the time on the first second of the minute example 40h 64 dec stop automatic transmission 41h 65 dec every minute the time will be sent Clock time format The cloc
4. User s manual ELPROMA ATOMIC DCF77N CLOCK CELPROMA OM ELECTRONICS CONTENTS INTRODUCTION DCF77N clock DCF transmitter Pack list INSTALLATION Connecting the DCF 77N clock Connection Receiver installation Outside mounting Connecting Utility software DCFSETUP PROGRAM DCFSetup 95 98 NT Millennium and 2000 Settings tab Serial port not available Timer tab OPERATION Connections 230V Relay output HD15 special functions Extra timer relay contact Alarm contact 24V slave clock output 5V and 24V outputs Serial2 230V Relay activation switch RS232 Computer connection DB9M RS232 cable shielded Receiver connector DB9F TERMINAL COMMANDS Serial settings Timer programming NN N O O O O O O OO N oon A Sz gt ww w a a O O Factory settings PROGRAMMING INFORMATION Serial settings asynchronic Time request Automatical time transmission Clock time format CONNECTING THE RECEIVER TROUBLE SHOOTING Serial port not available in DCFSetup LED does not blink DCFClock always starts with the wrong time SPECIFICATIONS DCF77N DCF Receiver Atomic DCF77 Clock INTRODUCTION DCF77N clock The Elproma DCF77N clock is developed to guarantee the exact time on LAN or stand alone computer systems The DCF77N clock system receives the radio signal which is transmitted by the DCF77 Atomic clock transmitter near Frankfurt in Germany The time signal is based on th
5. connect the receiver see the next chapter AARWNS Atomic DCF77 Clock Receiver installation The DCF receiver is housed in a small box with a 5 meter cable attached If 5 meter is not long enough the cable can be extended up to max 50 meters In the chapter Extending the receiver cable is shown how to do this The long side of the receiver must be pointed in the direction of Frankfurt Germany On the underside of the receiver a small red light indicates the reception The light should be on each second for 100ms or 200ms Before you attach the receiver to a wall check if it is the best place for DCF77 reception The DCF77 signal is very sensitive to interference so please check the following e Atleast 2 meters away from monitors e The receiver must be mounted as shown on the picture below e Keep the receiver away from large metal objects Frankfurt lt _ Outside mounting The receiver can be mounted outside If possible find a place where the unit is not exposed to sunlight all day If the cable has to go through a wall we recommend to take the cable out of the receiver put it through the hole and connect the receiver again How to do this is explained in the chapter Extending the receiver cable Connecting Connect the DCF receiver to the DC77N on the lower DB9F connector The red light in the frontpanel and on the underside of the receiver will blink if there is reception Turn the receiver until the light blinks
6. e relay is off when an inverse l shows the relay is on Atomic DCF77 Clock Connections eS a 230V Relay output On the back of the clock is the OE 230V relay output This output 230V i 230V rel relay can be programmed by the Ea e activate putput timer Maximum switch power is 1000W and is fused with a 6 3A fuse HD15 special functions 1 Slaveclock 6 Slaveclock Common 11 Slaveclock 2 Serial2 out 7 NC extra contact timer 12 OV gnd 3 Serial2 in 8 CO extra contact timer 13 24V output 1A fuse 4 NC alarm contact 9 NO extra contact timer 14 5V output 1A fuse 5 NO alarm contact 10 OV gnd 15 CO alarm contact Extra timer relay contact Together with the mains relay output relay a separate relay contact switches at the same time HD15 Pin 7 Common CO HD15 Pin 8 Normally closed NO HD15 Pin 9 Normally open NC Alarm contact NO CO This contact is normally open or closed and will switch when power is off or the time is not synchronised HD15 Pin 4 Common CO HD15 Pin 15 Normally closed NO HD15 Pin 5 Normally open NC 24V slave clock output The slave clock output gives every minute a 24V signal with changing polarity and a duration of 1 second Max current is 500mA HD15 Pin 1 Slaveclock HD15 Pin 6 Common HD15 Pin 11 Slaveclock Atomic DCF77 Clock 5V and 24V outputs Both outputs can be used to power external device
7. e vibration frequency of the caesium atom The accuracy is about 1 second in 300 000 years The Elproma DCF77N clock receives this time signal and checks whether the time frame is correct or not Inside the DCF77N clock a system of internal clocks ensure that the received time is the correct time This way erroneous received time signals can never disturb your computer time and the exact time is guaranteed Even after 3 days without power and not receiving the DCF signal the accurate time is guaranteed From now on the accurate time is always available for your operating system and application programs Special features include a low voltage alarm contact a switched mains and relay contact output controlled by a programmable 7 day timer and a 24V slave clock output The Elproma DCF77N clock has found its way in the market where exact time is essential Amongst the many applications you will find time registration systems banking stock exchange transportation companies airlines research broadcasting Special functions e Alarm contact This contact will be opened when the time is not synchronised and when there is no mains supply e 230V relay output with extra relay contact e Timer with 8 switch times per day For Windows a special setup program is provided other operating systems can work with a terminal program e 24V Slave clock output each minute a 1 sec pulse is provided in reversed polarity DCF transmitter The DCF 77 signal
8. en an error message will appear in this case check the serial cable and select the port where it is connected to Serial port not available If the serial port where the clock is connected to is not shown quit the DCFSetup program and quit any running DCF utility programs Only one program can use the serial port at the same time Atomic DCF77 Clock UTC offset This setting determines the time zone The value is the time difference between local time and UTC GMT Automatic daylight saving If this setting is 1 On the time will be set forward on the last Sunday morning in March from 03 00 to 04 00 and set back on the last Sunday morning in October from 03 00 to 02 00 Time not valid timeout This is the time before the not synchronised message will appear Default value is 72 hours this gives a maximum of 0 5 seconds time error When there is no mains supply there is also no DCF reception For an exact time it is important to always leave the clock on Send receive The lower progress bar shows the progress of data communication between PC and clock Timer tab On this tab you can set 8 switch times per day for the mains relay output Click on the square next to one of the 8 times E Hamed With On Off you can L i select the output state SWITCH HR MIN SEC ON OFF To edit the time use the Minne leftmost window Edit LJ Time 2 selected time and click L Time 3 on the up down ar
9. erial port not available in DCFSetup If the serial port where the clock is connected to is not shown quit the DCFSetup program and quit any running DCF utility programs e g DCFWIN Only one program can use the serial port at the same time LED does not blink 1 DCF receiver is placed in the wrong position or wrong location Try to turn the receiver until the led starts to flash 2 Remove the receiver from the wall and try to walk around for a better location 3 DCF Receiver is not connected to the lower DB9 connector DCFClock always starts with the wrong time Inside the clock a small lithium battery supplies the internal backup clock The battery has an expected life of more than 10 years in normal use but when the clock is often switched off the battery will be empty sooner The minimal expected life is 5 years When the battery is empty the internal clock does not run anymore This can be checked by switching the unit off at zero seconds then after ten seconds back on and check the display If the clock starts where you switched it off the battery is empty In this case please call our service department for a replacement battery Atomic DCF77 Clock Specifications DCF77N Ambient temp 10 C to max 40 C Mains supply 230VAC 24 Watt max 250mA fuse Dimensions 200 x 190 x 80 mm Weight 800 g 230V output 230VAC 1000W max 6 3A fuse Relay outputs Normally open or closed contacts 1A fuse Accuracy When synchronised 10ms u
10. ings including the timer of the clock Copy the DCFSetup program from CD to a DCF folder on your local harddisk It is possible to run the program from CD but the COM port choice will not be saved in this case First quit all running DCF programs only one program can use the serial port When you start the program the following screen appears Settings tab ies DCF77N Setup lof x This program has 5 language choices For Settings Timer English click the button left to English Language Mains relay mode Serial po C Nederlands C Off COMI COME 230V relay mode C Deutsch C On C COM2 COM The 230V output can English 2 LDiS OnE fuinclion iv dif i DRE C Time not valid C COM4 CoMs unction in 4 differen Polski Timer C cos modes Off the 230V output Universal Time Offset Depends on Location hour is switched off e On the 230V output Automatic daylight saving 0 Off 1 On 1 hour is switched on e Alarm normally the Time not valid timeout 72 hour output will be Off when the time is not synchronised the output will be On Read clock Send Settings to Clack 0 e Timer it is possible to set 8 switch moments for each day See Timer tab for more information on the timer t 100 Serial port Choose the correct port where the clock is connected to Your choice will be saved to harddisk for the next time The unavailable ports are shown grey If a wrong port is chos
11. k sends the following 10 bytes START_BYTE BAh when the request was 75h OR BBh when the request was 78h HOURS Binary MINUTES Binary SECONDS Binary YEAR Binary MONTH Binary DAY_OF_MONTH Binary WEEK_DAY Binary Mon 1 Tue 2 Sun 7 CHECK_SUM checksum sum modulo 256 of fields 2 8 After the calculation the result is logical ANDed with 7Fh and the result placed in this field STOP_BYTE_VAL C5h when the time is valid OR STOP_BYTE_INV D2h when the time is invalid Atomic DCF77 Clock Connecting the receiver O O The other side of the cable can be soldered directly to the DB9M connector or connected to the old cable by means of a terminal block The connections of the DB9M are shown below Hold the antenna with metal bracket towards you Loosen the cable gland Remove the 4 small screws in the corners that keep the box together Carefully take off the top Unscrew the three connection in the terminal block If the cable is going through a wall then first drill a hole and put the new cable through Then put the new cable through the cable gland and connect as shown in the picture Unscrew Check the connections carefully eee Now first put the screws back and put the sealing rings on top Now replace the top of the box and close the box tight Now turn the cable gland very tight The receiver can be mounted now 0 shield 13 Atomic DCF77 Clock Trouble shooting S
12. p to 40ms max deviation unsynchronised 7 2 ms max per hour DCF Receiver Ambient temp 30 to max 50 Celsius Supply 8VDC to 12VDC Dimensions 85 x 45 x 22 mm Mounting wall bracket e Never place the main DCF77N unit in direct sunlight e The computer and clock should be grounded properly e Don t use any solvents to clean the unit e Don t open the main DCF77N unit unless you are a certified repair engineer 15
13. rows to moni ccna Crane a Tmo Z When all switch times D Time have been set you can Bo press Send settings to clock The progress bar will now fill up to 100 Now all settings are valid The clock will remember these settings so unless you want to change something you can leave the program now Atomic DCF 77 Clock OPERATION On the front of the clock a red light inside the O of DCF clock lights up every second to indicate DCF reception 03 53 56 Ti 20 02 200 Relay mode SEP hour min sec Off on Alarm gt reay DCF LED Day month year or Timer Signal strength on off indicator As soon as the internal time is synchronised with the DCF signal the clock will show Time day month year relay mode signal strength and relay position e DCF led This light blinks every second for 100 or 200ms except at the 59 second e Signal strength There are 5 bar increasing in length Every time a good DCF frame is received an extra bar shows up to 5 max Each time a bad frame is received 1 bar disappears e 230V Relay mode o Off the 230V relay output is off o On the 230V relay output is on o Alarm The relay is normally off when there is an alarm the relay will switch on giving 230V at the output o Timer The 230V output can be switched on and off using the timer settings max 8 switch times per day e 230V relay on off indicator if an inverse o shows th
14. s with a maximum current of 500mA HD15 pin 12 OV massa HD15 pin 13 24V output 1A fuse HD15 pin 14 5V output 1A fuse Serial2 For future expansion HD15 pin 2 RS232 output HD15 pin 3 RS232 output 230V Relay activation switch Next to the mains output is a small button located This switch can be used to switch the mains power ON when it is OFF This can be used in those cases where a computer is switched on and off automatically by the clock and you want to switch the computer on manually RS232 Computer connection DB9M The top 9 pole connector is used to connect the computer to the DCF77N clock DBOM pin 2 TXD DB9M pin 3 RXD DB9M pin 5 GND RS232 cable shielded Female 9 pole DB9F Female 9 pole DB9F Pin 2 Pin 2 Pin 3 Pin 3 Pin 4 Pin 4 Pin 5 Pin 5 Pin 6 Pin 6 Pin 7 Pin 7 Pin 8 Pin 8 Pin 9 Pin 9 Receiver connector DB9F See chapter Connecting the DCF receiver Atomic DCF77 Clock Terminal commands All clock settings can be programmed by using a terminal program Serial settings Set the terminal program to the correct serial port and the following serial setting Baudrate 19200 Databits 8 Stopbits 1 Parity Even All clock commands start with a sign and ends with a Carriage return CR N X The N is the command number and the X is the value Setting 1 Language Possible values 0 Dutch 1 German 2 English 3 French e
15. xample 1 2 English 4 Polish Setting 2 UTC difference Possible values 12 12 This is the time difference between your local time and Universal Time Co rdinated UTC or GMT example 2 1 1 hour difference to UTC Setting 3 Automatic daylight saving Possible values 0 or1 off or on Daylight saving On Off When ON the time will be set back 1 hour at 03 00 the last Sunday morning in March and 1 hour forward at 02 00 the last Sunday morning in October example 3 1 Automatic daylight saving is on Setting 4 Time valid period Possible values 1 99 This specifies the length of time before the clock will report that it has not received a correct DCF signal Default is 72 hours which results in less than max 0 5 seconds time error example 4 72 Time valid period 72 hours Setting 5 Relay mode Possible values 0 Off 1 On 2 On when not synchronised 3 Timer This setting determines the way the 230 output is used Off On or as a warning for an unsynchronised time example 5 3 The mains relay output will switch on off at times defined in the timer settings see next chapter Atomic DCF77 Clock Timer programming When the relay mode is set to Timer 5 3 you can program the switch times with the commands 21 up to 27 This timer uses weekday programming so command 21 is for Monday 22 is for Tuesday etc There is a maximum of 8 switch times per day lt 21 27 gt N HH MM SS lt ON
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