C-MAX. TSG200 Time signal generator TSG200. Time Signal Generator. Manual TSG200. RF Technology Specialist. Version. Revision. SPEC No.

Transcription

1 Manual Time signal generator RF Technology Specialist Time Signal Generator A6 1 of 24

2 Manual The allows to transmit the time signal in any location. This feature opens a wide range of usage for the, e.g. exhibition halls, clock/watch stores, basements (heating systems) and many other locations, where the reception of a time signal may be difficult. Therefore, the is the perfect tool for all sales people, field engineers, product managers etc. Furthermore, the is capable of receiving the time signal transmitted by the transmitters for WWVB, DCF, MSF, JJY40, JJY60, meaning an exact synchronisation to the locally transmitted time signal in different countries (see below). Abbreviations used in this manual Abbreviation RC DOW BSI FSI RF DST Explanation Radio controlled Day of the week Bit strength indication Field strength indication Radio frequency Daylight saving time Time time signal transmitters Exact time information is transmitted in four countries of the world, each transmitter covering an average area of app km. Radio controlled time pieces can either receive the time signal of one country or are capable of receiving several signals. Depending on the time piece you are working with, the corresponding signal, as explained below, has to be selected in order to receive/transmit time properly. Signal Country Transmission frequency DCF77 Germany 77.5kHz MSF Great Britain 60kHz WWVB USA 60kHz JJY40 Japan 40kHz JJY60 Japan 60kHz 2 of 24

3 Manual 1. General Description The is a handy piece of tool with a variety of measurement and testing features: o RC application synchronisation in locations where no radio control signal is available; o Checking for the presence of radio control signal waves; o Checking quality of the incoming radio control signal waves. o Conversion of radio control signals by receiving a time code from one signal and transmitting as time code of another signal. o A normal table clock o 9V rechargeable power supply, connectable to DC power line. o RS-232 interface to connect PC for downloading of reception information to be stored as a log file for future reference. Button functions After turning on the, always the main menu is shown in the display. The different menus can be chosen by using the button MODE. The actual adjustment of any values is done with the buttons and In some adjustments, by pushing and continuously (>2s), a fast mode can be activated. To enter a different mode, push the adequate button. Button MODE With this button, different modes can be selected including RECEPTION SETTING MODE, TRANSMISSION SETTING MODE and RECEPTION INFORMATION MODE Button SET Push >2s: Activate setting mode in each mode (except reception information mode) Push <2s (in setting mode): Confirm settings Button Rx Push <2s: Manual reception of the time signal is activated FOR DURATION SET IN RECEPTION SETTING MODE: The light on the RX button will be turned on during the reception period. Push >2s: Press and hold this button can also save data into Eeprom for later read out. 3 of 24

4 Manual Button With the up button, a selected value can be increased Push <2s: Increase value by 1 Push >2s: Fast increase value Button With the down button, a selected value can be decreased Push <2s: Increase value by 1 Push >2s: Fast increase value Button Tx Push <2s: Manual transmission of the time signal selected is activated for duration set in transmission setting mode. The light on the Tx button will be turned on during the transmission period. Push >2s: Press and hold this button can also transmit data to the RS232 and recorded in a PC. 4 of 24

5 Manual Connectors (back) External antenna: for enhanced transmission of the signal, an external antenna can be connected 2. PC link: RS232 connection to PC for read out of data to PC 3. 9V connector: Connector for power supply, delivered with 4. ON/OFF switch 2. LCD BSI AM PM Su Mo Tu We Th Fr Sa D J4 US J6 GB % C 5 of 24

6 Manual 2.1 Battery IMPORTANT NOTE: The is equipped with a re-chargeable battery. Yet, due to the high power consuming functions of the, operation with battery should only be done if no other source of electricity is available. Approximate times for battery operation only are listed below: Function Transmission Reception Normal operation Operating time app. 1 hour app. 1 day app. 3 months 3. Button Operation Operation s Main Time Time Setting RX setting display mode RX Setting TX setting display mode TX Setting mode Reception Information MODE (S1) SET (S6) RX (S4) (S2) (S3) TX (S5) TX (S5) <2s <2s >2s <2s >2s <2s >2s <2s >2s <2s >2s Time Manual Receive Switch DD-MM or Start Check RX Setting Setting receive and save DST AUTO MM-DD or manual RS232 display once data to -> OFF Year transmi connect mode eeprom Display ssion ion and send out data via RS232 Confirm Select next settings & Increment Fast Decrement Fast item return to Increment Decrement main time mode TX Setting display Select next item Reception Information Select next item Main Time Confirm settings & return to RX setting display mode Confirm settings & return to TX setting display RX setting mode TX setting mode Switch to display between Rx sets 1, 2 and 3 Increment Switch display between Tx sets 1, 2 and 3 Increment Fast Increment Fast Increment Toggle on/off displayed RX set Decrement Toggle on/off displayed TX set Decrement Fast Decrement Fast Decrement 6 of 24

7 Manual Operating the TSG To setup the, connect the power supply to the with the power supply (connector 3 9V connector on the back) and plug into electricity outlet. 2. Switch the ON/OFF switch to ON, the MAIN TIME MODE will be shown 3. Follow the instructions of MODE OPERATION to set options 4. Start Rx or Tx mode 4. Overview The offers 4 modes which can be entered via the MODE button: MAIN TIME MODE push MODE RECEPTION SETTING MODE push MODE TRANSMISSION SETTING MODE push MODE RECEPTION INDICATION MODE 7 of 24

8 Manual Main Time S6 > 2s Time Settings S1 RX Settings display S6 > 2s RX Setting S1 TX Settings Display S6 > 2s TX Setting S1 Reception Information S1 4.1 Default setting When first starting the, the following options are set as initial settings: Parameter Value Time 01:00 Date 1 January 2005 (No DST) Time Zone UTC +1h time 12/24 hour 24 hour Reception signal DCF Auto reception time 1 2:00 ON Auto reception time 2 3:00 OFF Auto reception time 3 5:00 OFF Auto reception duration 15 minutes Transmission signal DCF Auto transmission time 1 15:00 OFF Auto transmission time 2 18:00 OFF Auto transmission time 3 21:00 OFF Auto transmission duration 15 minutes 8 of 24

9 Manual 5. Operation 5.1. Main Time Normal Operation The main time mode is the mode where the time (HH:MM:SS), the date, month, year, and DOW (day of the week) can be displayed. Under non-radio control operation, the will operate like a normal clock displaying this mode. If the unit was synchronised successfully within 24 hours ago with radio control signal, the transmitter symbol and the synchronised country will also be displayed on this screen. Time zone indication if WWVB is selected Transmitter Tower present shows synchronisation took place within 24 hours ago DATE-MONTH, MONTH-DATE or YEAR possible to display in this area. DST ON/OFF Time zone indication US symbol present indicates US signal synchronised within 24 hours ago. Other possibilities include J6 (Japan), J4(Japan), D(Germany),GB (England) During Reception (Rx) The reception function is used to synchronise the to the time signal being transmitted from the local time signal transmitter. If reception was successful, the will show exactly the same time as is being transmitted from the local transmitter (=synchronised time).during radio control reception, whether manually activated or automatically activated, this mode will show various additional information. 1. The received BSI (bit strength indicator) This indication is an indication of how good the data is within the RF signal being received. It appears as a number on the top left hand corner ranging from 0 to 6, where 0 is the worst signal and 6 is the best signal. This indication is refreshed every second during reception 2. The received signal strength (FSI) This indication is a 4-digit number showing the approximate field strength of the received frequency. This 4-digit number is a field strength indication in uv and is refreshed every 3 seconds, giving out the average field strength over the past 3 seconds. 3. Successful country recognition of signal When reception has started and the signal is not yet recognised, the country symbol will flash as it tries to identify the signal. After the unit has recognised which signal it is receiving, this symbol will stop to flash. 4. Successful synchronisation to signal When the radio control signal is being received and no synchronisation has been possible yet, the transmitter symbol will flash. If after 30 minutes of reception, there is no synchronisation possible, the transmitter symbol will disappear. If within 20 minutes synchronisation is successfully done, the transmitter symbol will be permanent on until the next reception takes place. 5. RX indication Whenever RX is taking place, RX and the reception mode (indicated by flashing signal abbreviations) will be flashing on display to show that the unit is in RX mode. 9 of 24

10 Manual BSI Indication to show quality of signal received Flashing RX indicates reception under progress Transmitter Tower shows synchronisation result Field Strength Indication in uv. In this case field strength is approximately 480 uv Country recognition symbol indicates country recognition result. Possibilities include J6 (Japan), J4(Japan), D(Germany),GB (England), US (USA) During Transmission (Tx) The transmission function allows the user, to transmit the options set (signal selected, time, date etc.) to time pieces receiving the corresponding signal (watches, clocks, RC time pieces).during radio control signal transmission, the main time mode display will show the signal which is being transmitted as well as a flashing TX and a flashing transmitter icon to show that the unit is in transmission mode. Flashing TX indicates transmission under progress Flashing transmitter tower shows transmission under progress US symbol flashing indicates US signal being transmitted. Other possibilities include J6 (Japan), J4(Japan), D(Germany),GB (England) Operation Flow Chart Main Time In the main time mode, the buttons will have the functions as shown below: Rx settings display mode Time setting mode Manual Rx once (for duration set in Rx setting mode) <2s >2s <2s S1 Set S6 Rx S4 Main Time S2 S3 Rx S5 <2s <2s <2s Switch DST ON / OFF Switch to display DD-MM, MM-DD or YEAR Tx (for duration set in Tx setting mode) Manual Rx once and store data in >2s >2s Check RS232 connection and transmit data to RS of 24

11 Manual Time setting mode In the main mode, all time related values can be adjusted manually according to the users needs. To enter the time setting mode, push SET >2s. After pushing SET >2s, the TIME ZONE indication will start flashing and can now be adjusted with the buttons UP and DOWN. Symbols for the time zone adjustment are as following: To jump to the next option push MODE Sequence of settings is: - Time Zone - 12/24 hour adjustment - HOUR adjustment - MINUTE adjustment - YEAR adjustment - MONTH adjustment - DATE adjustment If all settings have been made, push SET again to confirm settings and return to the MAIN TIME MODE. Time zone settable: Time zone Display on LCD -12h - -10h -- -9h -9-8h US (+ P indicator) -7h US (+ M indicator) -6h US (+ C indicator) -5h US (+ E indicator) -4h -4-3h -3-2h -2-1h -1 UTC GB +1h EU +2h +2 +3h +3 +4h +4 +5h +5 +6h +6 +7h +7 +8h +8 +9h JP +10h - +12h of 24

12 Manual Operation Flow Chart Time Setting Main Time S6 > 2s Adjust Time Zone Increment Selected Item S2 < 2s Adjust 12/24h S3 < 2s Decrement Selected Item Fast Increment Selected Item S2 > 2s Adjust Hour S3 > 2s Fast Decrement Selected Item Adjust Minutes Adjust Year S6 < 2s Or AR = 3 mins Set past changes and return to Main time Adjust Month Adjust Date Time zone settable: Time zone Display on LCD -12h - -10h -- -9h -9-8h US (+ P indicator) -7h US (+ M indicator) -6h US (+ C indicator) -5h US (+ E indicator) -4h -4-3h -3-2h -2-1h -1 UTC GB +1h EU +2h +2 +3h +3 +4h +4 +5h +5 +6h +6 +7h +7 +8h +8 +9h JP +10h - +12h -- i) In Time Settings mode, if S2 and/or S3 are not pressed, the time keeps on updating and refreshing. ii) In Time settings mode, if S2 and/or S3 button is pressed under any setting item, the second will reset to zero and time will stop updating iii) In this mode, if auto reception/transmission time is reached, this auto reception trial/transmission will be abandoned iv) Upon auto return after 3 mins of no operation, any changes made will be updated v) If within setting mode, nothing is adjusted or if time zone or 12/24 hour setting is adjusted, the radio control tower will not be affected. vi) If within setting mode, any item other than time zone or 12/24 hour setting is adjusted, the radio control tower will disappear indicating time is no longer radio controlled accurate. 12 of 24

13 Manual 5.2. RX Settings The RX settings mode allows the user to view and adjust the following settings: 1) the three different set auto reception time. Auto reception means, that the will automatically start to receive the time signal at a pre-defined time for a pre-defined duration. 2) reception signal (there can only be 1 reception signal set and this applies the same for all three auto reception and manual reception), meaning that if for example DCF is set for the first auto reception time, the will receive the DCF signal at all three pre-defined reception times 3) Reception duration for all three sets of auto reception (durations for the 3 auto reception trials are the same and changing any one will imply for other auto reception as well as manual reception). Duration must be set within the boundary of 2 minutes and 9 hours 59 minutes). Reception duration is the pre-defined time, in which the will try to synchronise it s internal time with the time signal transmitted. To enter the Rx settings mode, push the MODE button until the display shows the Rx setting indication mode To consecutively show the three different set reception times, push the UP button. The corresponding number will be shown and toggled between 1, 2 and 3. By pushing the DOWN button, the selected reception time can be turned ON or OFF. ON means, reception will be started to the time selected, OFF means reception will not be started. To enter the setting mode, push SET >2s. The first changeable option will start flashing. To jump to the next option push MODE Sequence of settings is: 1. Signal i) Reception Signal can be chosen between 7 alternatives: a) Scan b) MSF & DCF dual band (Europe dual band) Flashing D and GB c) JJY40 & JJY60 dual band (Japan dual band) Flashing J4 and J6 d) DCF only (Germany) Flashing D e) MSF only (Great Britain) Flashing GB f) WWVB only (USA) Flashing US g) NOTE: If WWVB is chosen, PMCE has to be selected after adjustment of RX signal h) JJY60 only (Japan 60) Flashing J6 i) JJY40 only (Japan 40) Flashing J4 2. Auto Rx time - Minute 3. Auto Rx time - Hour 4. RX duration (see below) 13 of 24

14 Manual Indicating Auto RX time 1 is set active Indicating Auto Reception duration set as 15 minutes Indicating in RX setting mode Indicating all receptions are set to receive WWVB (for USA) If all settings have been made, push SET again to confirm settings and return to the RX SETTINGS DISPLAY MODE. * SCAN means, that the will scan all signals shown and lock onto the recognised signal to receive the time signal. For example: If you are located in Germany, the will start scanning the signals, when DCF is reached, the signal is recognised (since this is the signal being transmitted in Germany) and reception will start for DCF. ** DUAL BAND means, that the will try to receive the either one of the signals set in dual band reception (DCF/MSF, JJY40/JJY60) ii) iii) iv) In this mode, if auto reception/transmission time is reached, this auto reception trial or transmission will be abandoned. Upon auto return after 3 mins of no operation, any changes made will be updated At any time when Rx (S4) is pressed, any changes made previously will be updated 14 of 24

15 Manual Operation flow chart Rx setting mode Main Time Display auto RX time 1 and signal to receive S6 < 2s Return to Time mode and start manual reception Toggle ON/OFF displayed Rx set S3 < 2s S2 < 2s Display next auto RX setting number (1,2 or 3) and setting S2:cycle 1,2,3 ; S3: turn on/off TX Settings S6 > 2s Increment Selected Item Fast Increment Selected Item S2 < 2s S2 > 2s Adjust RX signal (This applies to auto and manual reception) Adjust auto RX time Minute Flashes Adjust auto RX time Hour Flashes S3 < 2s S3 > 2s Decrement Selected Item Fast Decrement Selected Item Adjust RX duration Minute Flashes (This applies to auto and manual reception) (3 30min.) S6 < 2s Or AR = 3mins Set past changes and return to display auto RX time 1 15 of 24

16 Manual Reception Algorithm For the two dual band reception selection, the following reception algorithm applies: Dual mode newly chosen JJY40 or DCF reception Protocol not recognised in 3 mins Protocol recognised in 3 mins Continue JJY40 or DCF reception for maximum duration set in RX settings Sync or not sync Not Sync Keep same dual mode reception sequence for following receptions JJY60 or MSF reception Protocol not recognised in 3 mins Protocol recognised in 3 mins Continue JJY60 or MSF reception for maximum duration set in RX settings Sync Reverse dual mode reception sequence for following receptions Stop Reception For Universal Scan reception the following algorithm applies: 16 of 24

17 Manual DCF reception for maximum 1 minute No DCF recognised DCF recognised Continue DCF reception for maximum duration set in RX setting mode Yes Sum BSI > 150? No Continue JJY60 reception for maximum duration set in RX setting mode Continue JJY60 reception for maximum duration set in RX setting mode JJY60 recognised Yes JJY60 recognised Yes WWVB reception for maximum 3 minutes No WWVB/MSF/JJY60 recognised Sum BSI > 300? No JJY40 reception for maximum 1 minute No JJY40 recognised Sum BSI > 150? WWVB recognised MSF recognised Continue WWVB reception for maximum duration set in RX setting mode Continue MSF reception for maximum duration set in RX setting mode No Stop reception Previous reception vs present reception: Previous successful reception Present successful reception Time zone change New display on main mode LCD display DCF DCF / MSF No Change No change DCF JJY40 / JJY60 Change to UTC + 9h JP DCF WWVB Change to UTC - 8h US P zone) MSF CDF / MSF No change No change MSF JJY40 / JJY60 Change to UTC + 9h JP MSF WWVB Change to UTC 8h US (P zone JJY40 / JJY60 MSF Change to UTC time UK JJY40 / JJY60 DCF Change to TUC + 1h EU JJY40 / JJY60 WWVB Change to UTC 8h US (P zone) JJY40 JJY60 No change No change JJY60 JJY40 No change No change WWVB DCF Change to UTC + 1h EU WWVB MSF Change to UTC time UK WWVB JJY40 / JJY60 Change to UTC + 9h JP WWVB WWVB No change No change 17 of 24

18 Manual 5.3. TX Settings The TX settings mode allows the user to view and adjust the following settings: 1) the three different sets of auto transmission time. Auto transmission means, that the will automatically start to transmit the time signal at a pre-defined time for a pre-defined duration. 2) Transmission signal (there can only be 1 transmission signal set and this applies the same for all three auto and manual transmission, however this signal can be different to the reception signal set). Meaning that if for example DCF is set for the first auto transmission time, the will transmit the DCF signal at all three pre-defined reception times 3) Reception duration for all three sets of auto transmission (durations for the 3 auto transmission trials are the same and changing any one will imply for other auto transmission as well as manual transmission). Duration must be set within the boundary of 2 minutes and 9 hours 59 minutes). Transmission duration is the pre-defined time, in which the will transmit the time signal selected. To enter the Rx settings mode, push the MODE button until the display shows the TX setting indication mode To consecutively show the three different set transmission times, push the UP button. The corresponding number will be shown and toggled between 1, 2 and 3. By pushing the DOWN button, the selected transmission time can be turned ON or OFF. ON means, reception will be started to the time selected, OFF means reception will not be started. To enter the setting mode, push SET >2s. The first changeable option will start flashing. To jump to the next option push MODE Sequence of settings is: 1. Signal i) Transmission signal can be chosen between 5 alternatives: a) DCF only (Germany) Flashing D b) MSF only (Great Britain) Flashing GB c) WWVB only (USA) Flashing US d) JJY60 only (Japan 60) Flashing J6 e) JJY40 only (Japan 40) Flashing J4 NOTE: If WWVB is chosen, PMCE has to be selected after adjustment of TX signal 2. Auto Tx time - Minute 3. Auto Tx time - Hour 4. Tx duration (see below) 18 of 24

19 Manual Indicating Auto TX time 1 is set in-active Indicating Auto Transmission duration set as 15 minutes Indicating in TX setting mode Indicating all transmissions are set to transmit WWVB (for USA) If all settings have been made, push SET again to confirm settings and return to the TX SETTINGS DISPLAY MODE. * DUAL BAND means, that the will try to receive the either one of the signals set in dual band reception (DCF/MSF, JJY40/JJY60) ii) iii) iv) In this mode, if auto reception/transmission time is reached, this auto reception trial or transmission will be abandoned. Upon auto return after 3 mins of no operation, any changes made will be updated At any time when Rx (S4) is pressed, any changes made previously will be updated 19 of 24

20 Manual Operation flowchart Tx settings mode RX Settings Display auto TX time 1 and signal to transmit S6 < 2s Return to Time mode and start manual reception Toggle ON/OFF displayed Tx set S3 < 2s S2 < 2s Adjust auto TX setting number (1,2 or 3) S2: adjust; S3: turn on/off Reception Information S6 > 2s Increment Selected Item S2 > 2s Adjust TX signal (This applies to auto and manual transmission) Adjust auto TX time Minute Flashes S3 < 2s Decrement Selected Item Fast Increment Selected Item S2 < 2s Adjust auto TX time Hour Flashes Adjust TX duration Minute Flashes (This applies to auto and manual transmission) (3 30 min.) S3 > 2s S4 < 2s Or AR = 3mins Fast Decrement Selected Item Set past changes and return to display auto TX time 1 20 of 24

21 Manual 5.4. Reception Information Reception Information shows the information related to the previous reception. Upon entering this mode, the LCD will display the following information if a past reception has taken place: 1. Reception ending time and date 2. Reception duration 3. Received signal protocol 4. synchronisation result a. OK = previous reception successfully synchronised b. NG = previous reception not successfully synchronised c. RI = no previous reception has taken place since battery power on. This mode only serves to show information and therefore no settings are possible. Reception Duration in Mins- Seconds (MMSS) Synchronisation Result Month and Date of previous reception. MM-DD or DD-MM format according to main menu setting Reception Ending Time Transmitter Tower present shows synchronisation took place within 24 hours ago Received Signal protocol AR = 3 mins or push S1: Return to time mode If no reception took place previously, the following reception information will be displayed in the LCD: 21 of 24

22 Manual 5.5 Storing of data into In addition, the is capable to store data for a pre-defined period of time which can be read out via a serial interface to a PC. To start the store function of the, push RX > 2s. To adjust data storage (=reception) duration, push DOWN (S3) short to toggle between 1, 2 or 3. Possible data storage durations with different reception sequences are listed below: 1. BSI & FSI saved every 2 seconds (at second 0, 2, 4, 58) + Time data saved every second 00. This gives maximum 12 hours data 2. BSI & FSI saved every 15 seconds (at second 0, 15, 30, 45) + Time data saved every second 00. This gives maximum 48 hours data 3. BSI & FSI saved every second 00 + Time data saved every 10 minutes at second 00. This gives maximum 14 days data. During storing of data, the characters EEP will be flashing on the top right hand corner of the LCD as follows: BSI indication to show quality of signal received Field strength indication in µv Flashing EEP indicates storing data in process Flashing Rx indicates reception under progress Transmitter Tower present shows synchronisation took place within 24 hours ago Country recognition symbol indicates country recognition result Upon starting of this reception, the internal eeprom inside will be erased. Any previous data will be deleted and overwritten by present reception data. Upon both auto time out of reception (as defined in reception duration) and manual stop of reception (by pushing Rx button once), storing of data will stop and EEP will be permanently displayed on the top right hand corner of the LCD until next storing of data or after read of data (see next section). P, M, C, E Time zone indication if US time zone is set Shows some data is stored inside eeprom Shows time zone set Transmitter Tower present shows synchronisation took place within 24 hours ago Us symbol present indicates US signal synchronised within 24 hours ago. Other possibilities include J6 (Japan), J4 (Japan), D (Germany), GB (England) 22 of 24

23 Manual 5.6 Read out data from Upon press and hold of Tx button for more than 3 seconds, the data stored in can be retrieved and transferred to the RS-232 interface. When this operation is activated, the will first check whether the RS-232 port is connected to a PC or not, if not, it will display Err at top right hand corner of LCD for 10 seconds to show error connection but nothing will be erased or transferred. After 10 second, EEP will reappear to show that the data is still stored P, M, C, E Time zone indication if US time zone is set Shows error in connection of RS232 during data transfer Shows time zone set Transmitter Tower present shows synchronisation took place within 24 hours ago Us symbol present indicates US signal synchronised within 24 hours ago The process by which the confirms that there is a RS232 connection is as follows: 1. The will send the request stream (0xAF) to the RS232 port in the first 10 seconds 2. Upon reception of this data stream by the PC, the PC must send within 10 seconds the acknowledgement stream (0xFF) back to the 3. After acknowledging 0xFF, the will then transfer data to the PC When the RS-232 port is properly connected to a PC, then the will transfer the stored data from the eeprom to the RS-232 interface. At this time, the LCD top right corner will flash 232 to show data transfer in place and after transfer finish, these 3 characters will go blank. This means that the data has been completely transferred to the PC and the eeprom is now empty. transfers data to the PC in the following format (all actual data transfer is in binary format) P, M, C, E Time zone indication if US time zone is set Shows RS232 connection established and data is being transferred. After 10 seconds, this symbol will disappear. Shows time zone set Transmitter Tower present shows synchronisation took place within 24 hours ago Us symbol present indicates US signal synchronised within 24 hours ago 23 of 24

24 Manual Read out data can be in 3 styles corresponding to the 3 different modes of data storing selected during reception: 4. BSI & FSI saved every 2 seconds (at second 0, 2, 4, 58) + Time data saved every second 00. This gives maximum 12 hours data 5. BSI & FSI saved every 15 seconds (at second 0, 15, 30, 45) + Time data saved every second 00. This gives maximum 48 hours data 6. BSI & FSI saved every second 00 + Time data saved every 10 minutes at second 00. This gives maximum 14 days data. First second FF FF FF FF (1~3) (0~4) (0~59) (0~59) (0~23) (1~31) (1~12) (0~99) (0~6) (0 or 1) (0 or 1) Start word Data store mode Start word Rx mode Second Minute Hour Date of month Month Year Day of week DST Sync symbol Every 2 seconds, every 15 seconds or every 60 seconds 4 bits (0~6) 12 bits (0~1000) BSI FSI Every 60 seconds, every 10 minutes or instance of synchronisation FF FF (0~4) (0~59) (0~59) (0~23) (1~31) (1~12) (0~99) (0~6) (0 or 1) (0 or1) Start word Rx mode Second Minute Hour Date of month Month Year Day of week DST Sync symbol 0=JJY40 Time data given out is always UTC time 0=Sun 1=DST 1=Sync 1=JJY60 2=WWVB 1=Mon 2=Tue 0=no DST 0=not synce 3=MSF 4=DCF 6=Sat Note Data are all in binary format, and filled up with leading zeroes to the number of bits shown in the first row Figures in brackets are decimal. These are converted to binary format in data transfer out. For example: Tuesday is of 24