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The Modular System GEN170TGP

GEN170TGP is a set of equipment composed of a DCF77 generator GEN170 and a
DCF77 simulator SIM77PV4 together with a power supply, all installed in a metal
desktop case and ready to operate. The interfaces and signals provided by GEN170 and
SIM77PV4 are accessible via connectors in the rear panel of the case. Details of the
components are described below.

NEXT

INC

CLR

ACK

MENU

FAIL

LOCK

GEN170 assembled in desktop case

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Содержание GEN170TGP

Страница 1: ...Technical Information Operating Instructions GEN170TGP ...

Страница 2: ...Impressum Meinberg Funkuhren GmbH Co KG Lange Wand 9 D 31812 Bad Pyrmont Telefon 49 0 52 81 9309 0 Telefax 49 0 52 81 9309 30 Internet http www meinberg de Email info meinberg de 17 November 2008 ...

Страница 3: ...play 8 MENU Key 8 CLR ACK Key 8 NEXT Key 8 INC Key 8 The Menus in Detail 9 Root Menu 9 Menu SETUP 10 SETUP INITIAL TIME 10 ADJUST SECONDS 10 SETUP TIME ZONE 11 SETUP DAYLIGHT SAV ON OFF 11 SETUP LEAP SECOND 11 SETUP SERIAL PORT PARM 12 SETUP SER STRING TYPE 12 SETUP SERIAL OUTPUT 13 SETUP TIMECODE OUT 13 INIT USER PARMS 14 Resetting Factory Defaults 14 Firmware Updates 14 ...

Страница 4: ...9 Generated Time codes 20 Selection of Generated Time Code 21 Outputs 21 AM Sine Wave Output 21 PWM DC Output 21 Technical Data 21 Technical Specifications GEN170 22 Signal Description GEN170 24 Rear Connector Pin Assignments GEN170 25 DCF77 Simulator 26 Function 26 Technical Specifications SIM77PV4 27 Rear Connector Pin Assignments SIM77PV4 28 GEN170TGP Rear view 29 Assignments of the 25 pin Conn...

Страница 5: ...IM77PV4 together with a power supply all installed in a metal desktop case and ready to operate The interfaces and signals provided by GEN170 and SIM77PV4 are accessible via connectors in the rear panel of the case Details of the components are described below NEXT INC CLR ACK MENU FAIL LOCK GEN170 assembled in desktop case ...

Страница 6: ... 1 or 0 2 sec The length of these time marks represent a binary coding scheme using the short time mark for logical zeroes and the long time mark for logical ones The information on the current date and time as well as some parity and status bits can be decoded from the time marks of the 15th up to the 58th second every minute The absence of any time mark at the 59th second of a minute signals tha...

Страница 7: ...hronized by an external PPS input signal Internal date and time is always based on UTC Universal Time Coordinated formerly GMT Greenwich Mean Time A configurable time offset can be applied to the UTC time base to compute a local standard time Beginning and end of a period of daylight saving time can either be computed year by year based on a simple configurable algorithm or can be configured for t...

Страница 8: ...quick reference of the available menus and submenus can be found at the end of this document MENU Key This key lets the user step through several display menus showing specific data CLR ACK Key This key has to be used when parameters are to be modified When this key is pressed the parameters that have been edited are saved in the battery buffered memory If the menu is left without pressing CLR ACK...

Страница 9: ... from starting to distribute a wrong time after power up which could otherwise happen due to interferences between an incoming PPS pulse and the second changeover of the built in RTC chip Once the initial time has been acknowledged the main menu is displayed The first line simply shows the module s function The next two lines display the current day of week date the name of the time zone just info...

Страница 10: ...ETUP display SETUP INITIAL TIME Using this menu GEN170 s on board real time clock can be set When finally the CLR ACK button is pressed the system date and time is set to the values shown in the display ADJUST SECONDS If the system time differs by some seconds from an external reference time this menu can be used to adjust the internal clock to the reference time The second and third lines of the ...

Страница 11: ... Concerning parameter input both topics are handled identically so they are described together in this chapter Beginning and end of daylight saving may either be defined by exact dates for a single year or using an algorithm which allows the device to recompute the effective dates year by year The figures below show how to enter parameters in both cases If the number of the year is displayed as wi...

Страница 12: ...prefers to insert a leap second after 23 59 59 UTC on December 31 or on June 30 if necessary SETUP SERIAL PORT PARM Using this topic the user can enter transmission speed and framing of the serial ports Default parameters are COM0 19200 baud 8N1 COM1 9600 baud 8N1 SETUP SER STRING TYPE This menu lets the user select the time string formats sent via the serial ports As of this writing the GEN170 su...

Страница 13: ...local time Since most time code formats do neither include the UTC offset of the transmitted time nor a flag which reports the current DST status the recommended setting is UTC in order to avoid unexpected time steps of the connected time code receivers The IEEE1344 signal frame also contains a Time Figure Of Merit TFOM flag which reflects whether the time code generator is synchronized or not If ...

Страница 14: ...for the complete system Firmware Updates Whenever the on board software must be upgraded or modified the new firmware can be downloaded to the internal flash memory via the serial port COM0 There is no need to open the metal case and insert a new EPROM If the MENU key on the front panel is pressed while the system is powered up a bootstrap loader is activated and waits for instructions from the se...

Страница 15: ... characters depending on clock type u GPS clock is running free without exact synchr PZF time frame not synchronized DCF77 clock has not synchronized after reset space 20h GPS clock is synchronous base accuracy is reached PZF time frame is synchronized DCF77 clock has synchronized after reset v GPS receiver has not checked its position PZF DCF77 clock currently runs on XTAL space 20h GPS receiver ...

Страница 16: ...ated code it also provides the unmodulated DC Level shift code The modulated sine wave carrier and the board s internal time pattern are derived from the radio clock s disciplined oscillator Block Diagram Time code microcontroller modulator EPLD D A converter driver 50 unbalanced digital sinewave generator timecode 10 MHz modulated timecode unmodulated timecodes high and low active PPS ...

Страница 17: ...17 IRIG Standard Format x 3x TYPICAL MODULATED CARRIER IRIG A 10000 Hz IRIB B 1000 Hz binary 0 binary 1 ...

Страница 18: ...18 AFNOR Standard Format ...

Страница 19: ... Time set during daylight saving time 64 Timezone Offset Sign sign of TZ offset 0 1 65 TZ Offset binary encoded 1 Offset from IRIG time to UTC time Encoded IRIG time plus TZ Offset equals UTC at all times 66 TZ Offset binary encoded 2 67 TZ Offset binary encoded 4 68 TZ Offset binary encoded 8 69 Position Identifier P7 70 TZ Offset 0 5 hour set if additional half hour offset 71 TFOM Time figure of...

Страница 20: ... 99 f B126 100pps AM sine wave signal 1 kHz carrier frequency BCD time of year year number 0 99 g B007 100pps PWM DC signal no carrier BCD time of year SBS time of day year number 0 99 h B127 100pps AM sine wave signal 1 kHz carrier frequency BCD time of year SBS time of day year number 0 99 i AFNOR Code according to NFS 87500 100pps AM sine wave signal 1kHz carrier frequency BCD time of year comp...

Страница 21: ...e can be disabled The segment is then set to all zeros Outputs The module GEN170 TC provides modulated and unmodulated DC Level Shift outputs The format of the time codes is illustrated IRIG and AFNOR standardfor mat AM Sine Wave Output The amplitude modulated carrier is available at the VG connector pin 6a The carrier frequency depends on the code and has a value of 1 kHz IRIG B The signal amplit...

Страница 22: ...ock TTL level PZF_WIN PRN window TTL level active high IRIG_AC modulated IRIG sine wave output IRIG_DC unmodulated IRIG output P_SEC second pulse duration 200ms TTL level PPM minute pulse duration 200ms TTL level ACCURACY OF PULSES better than 100 nsec ACCURACY OF INTERNAL XTAL 1 day 1 10 7 1 year 5 10 7 drift with temparature 2 10 7 SERIAL PORT 2 asynchronous serial port RS 232 transmission speed...

Страница 23: ...23 REAR EDGE CONNECTOR according to DIN 41612 type C 64 rows a c male AMBIENT TEMPERATURE 0 60 C HUMIDITY 85 max ...

Страница 24: ...level active high PZF out 6c PRN sequence TTL level P_SEC out 14c pulse once a second duration 200ms TTL level PPM out 8c pulse once a minute duration 200ms TTL level IRIG_AC out a6 Modulated IRIG sine wave output IRIG_DC out a7 Unmodulated IRIG output 10MHz in 4c 10MHz reference input 1Veff into 50 Ohm 1 pps in 28c sync second TTL rising edge TTL_INxx in control inputs for AM marks 0 through 15 T...

Страница 25: ... in 14 TTL_IN1 in P_SEC out 15 TTL_IN2 in reserved 0 16 TTL_IN3 in reserved 1 17 TTL_IN4 in reserved 2 18 TTL_IN5 in 19 TTL_IN6 in reserved 3 20 TTL_IN7 in 21 TTL_IN8 in 22 TTL_IN9 in 23 TTL_IN10 in 24 TTL_IN11 in COM1 TxD out 25 TTL_IN12 in 26 TTL_IN13 in COM0 TxD out 27 TTL_IN14 in 2 25MHz out 28 TTL_IN15 in 1 pps in 29 COM1 RxD in 30 COM0 RxD in 31 32 GND GND Rear Connector Pin Assignments GEN1...

Страница 26: ...a binary 1 is transmitted These time marks are used by the SIM77PV4 to modulate the on board generated 77 5kHz sine wave carrier according to the DCF77 transmitter This DCF77 compatible signal is accessible via four DC insulated outputs which can be connected to all Meinberg AM radio clocks directly The signal can be distributed by additional antenna amplifiers distributors Internal Oscillator Pro...

Страница 27: ...oard have to be set correspondingly Outputs 4x amplitude modulated DC insulated carrier 77 5 kHz Output level approx 60 dBm Output level approx 50 dBm requires modifications Connector 64 pin rear VG edge connector DIN41612 Dimension Eurocard 100mm x 160mm 1 5mm Epoxy Front Panel 4HP 3U 20mm wide x 128 4mm high Amb Temperature 0 50 C Humidity 85 max ...

Страница 28: ..._OUT1 11 1MHz in 12 10MHz in SIM_OUT1 13 14 15 16 SIM_OUT2 17 18 SIM_OUT2 19 20 21 22 SIM_OUT3 23 24 SIM_OUT3 25 26 27 7 75MHz in 28 SIM_OUT4 29 30 SIM_OUT4 31 32 GND GND Rear Connector Pin Assignments SIM77PV4 male connector according to DIN 41612 type C 64 rows a c ...

Страница 29: ...29 GEN170TGP Rear view 1 14 13 25 Made in Germany Assignments of the 25 pin Connector ...

Страница 30: ...30 ...

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