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Summary of Contents for Meinberg FUNKUHREN DU35K
- Page 1 FUNKUHREN Technical Information Operating Instructions DU35K...
- Page 2 Impressum Werner Meinberg Auf der Landwehr 22 D-31812 Bad Pyrmont Phone: ++49 52 81 - 9309-0 Fax: ++49 52 81 - 9309-30 Internet: http://www.meinberg.de Email: info@meinberg.de September 3, 2004...
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Page 3: Table Of Contents
CE Label .................... 13 Connection Exaples ................14 Pin Assignments of SUB-D Connector IN ....... 16 Pin Assignments of SUB-D Connector OUT ......16 Technical Specifications: ..............17 Format of the Meinberg Standard Time String ......18 Jumper Arrangement ................19... -
Page 5: General Information About Dcf77
General Information about DCF77 The radio remote clocks made by Meinberg receive the signal from the long wave transmitter DCF77. This long wave transmitter installed in Mainflingen near Frank- furt/Germany transmits the reference time of the Federal Republic of Germany. This time reference is either the Central European Time (Mitteleuropäische Zeit, MEZ) or... -
Page 6: Features Of The Du35K
Features of the DU35K The large display DU35K is a 50mm hight LED matrix display that shows time and date in three lines with eight characters each as follows: day of week, day of month, month, hours, minutes and seconds. It is available as a free running stand alone clock, as a slave clock or as a radio clock with integrated DCF77 receiver. -
Page 7: Du35K As Stand Alone Clock
DU35K as Stand Alone Clock After connecting the power supply to the 230V/50Hz net the appearing time/date can be set by the two buttons in the rear panel of the case. The accuracy of the time depends on the precision of the internal quartz base. An automatic changeover of daylight saving can be programmed as described in section "Daylight Saving". -
Page 8: Du35K As Radio Clock
DU35K as Radio Clock It is not possible to run this variant of the DU35K as a slave clock. The DSUB connector (IN) at the rear panel has no effect. The DSUB connector (OUT) can be connected to further DU35Ks or similar systems to run them as slave clocks. An external ferrit antenna is used to receive the signal from DCF77 and supplies it to the on-board LF receiver where it is demodulated by a synchronous detector with automatic gain control. -
Page 9: Mounting The Antenna
Mounting the Antenna Generally it is important to position the antenna in an optimal way. The antenna should be aligned at a right angle to the direction of the transmitter (Frankfurt). It should be mounted at least 30 centimeters away from the clock unit and from solid steel. -
Page 10: Usage Of The Buttons Menu And Set
Usage of the Buttons MENU and SET The time, the language, the brightness and the automatic changeover of daylight saving can be edited by using the buttons MENU and SET. The button MENU is used to change over from the normal operation mode into the 'set parameters' mode and to select the different menus. -
Page 11: Winter/Summer Changeover
Winter/Summer Changeover This menu is only visible when the automatically changeover of daylight saving is enabled. Pressing SET lets the user edit the time/date of the changeover as described in section "Time & Date" but there is one peculiarity: Beginning and ending of daylight saving may either be defined by exact dates for a single year or using an algorithm which allows the DU35K to recompute the effective dates year by year. -
Page 12: Rear View Du35K
Rear View DU35K Fig.2: Rear Panel View Input for preconnected clock or master clock (time strings or pulses per minute) Output (time strings or pulses per minute) for further DU35Ks or other equivalent Displays. Antenna input for external ferrite antenna (only DCF77 variant) Power Power supply cord (85-264VAC / 120-375VDC) FUSE... -
Page 13: Rear Panel Connectors
Because it is possible to preconnect clocks in different ways it is necessary to set the jumpers on the main board correctly (see examples Fig.3-6). The factory default setting of the jumpers is: syncronisation by RS232 time strings. Rear Panel Connectors Name Type Signal... -
Page 14: Connection Exaples
Connection Exaples Hauptuhr (DCF / GPS) DU35K oder D Sub25 IN DU35K* (D Sub 9 OUT) J P 7 J P 8 J P 9 J P 1 6 J P 1 7 J P 1 8 J P 1 9 R S 2 3 2 T e l e g r a m Fig.3: Jumper settings for operating mode: 'Synchronisation by RS232'... - Page 15 Hauptuhr (DCF / GPS) DU35 K oder D Sub25 IN DU35K* (D Sub 9 OUT) J P 7 J P 8 J P 9 J P 1 6 J P 1 7 J P 1 8 J P 1 9 p a s s i v p a s s i v a k t i v...
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Page 16: Pin Assignments Of Sub-D Connector In
Pin Assignments of SUB-D Connector IN Input Time Strings - RS232 Output RX_INF - RS232 Ground Input Pulses per Minute Input Pulses per Minute Output RX_INF - 20mA - Input Time Strings - 20mA + Output RX_ INF - 20mA + Input Time Strings - 20mA - Pin Assignments of SUB-D Connector OUT Output Time Strings - 20mA -... -
Page 17: Technical Specifications
DSub9 connector BAUDRATE: 9600 baud FRAMING: TIME STRING: see "Format of the Meinberg Standard Time String" BUFFERING: In case of supply voltage failure the on-board RTC keeps the time based on XTAL for more than 10 years. POWER REQUIREMENTS: 85-264VAC, 50/60Hz / 120-375VDC, approx. 22VA... -
Page 18: Format Of The Meinberg Standard Time String
Format of the Meinberg Standard Time String The Meinberg Standard Time String is a sequence of 32 ASCII characters starting with the STX (start-of-text) character and ending with the ETX (end-of-text) charac- ter. The format is: <STX>D:dd.mm.yy;T:w;U:hh.mm.ss;uvxy<ETX> The letters printed in italics are replaced by ASCII numbers whereas the other characters are part of the time string. -
Page 19: Jumper Arrangement
Jumper Arrangement JP16...
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