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DS-GPS-CLOCK  

TECHNICAL REFERENCE MANUAL 

 

 

3. Specifications 

 

DS-GPS-CLOCK V20-2

5/28   

IRIG Input Specifications 

Supported codes 

IRIG code A or B / AM or DC 

Compatibility (AM code) 

0.5 Vpp to 10 Vpp 

Ratio (AM) 

3:1 ±10 % 

Compatibility (DC code) 

DC Level Shift TTL / CMOS compatible 

Impedance 

20 kΩ 

Isolation 

150 VDC 

Trigger accuracy 

1 µsec 

IRIG output specifications 

Supported codes 

IRIG code B, DC 

Isolation 

None 

Accuracy 

< 1 µsec (delay to GPS PPS) 

GPS specifications 

General 

12 channel, L1 frequency receiver 

PPS accuracy 

100 ns 

Refresh rate 

1 Hz 

Position accuracy 

Horizontal CEP 

  

Autonomous 

3.0 m 

  

Differential 

1.0 m 

Trigger accuracy 

1 µsec 

System specifications 

Clock accuracy locked 

without drift 

Clock accuracy unlocked 

< 10 ppm 

Input 

SMA for GPS antenna, BNC for IRIG I/O 

Содержание DS-GPS-CLOCK

Страница 1: ...DS GPS CLOCK TECHNICAL REFERENCE MANUAL DS GPS CLOCK V20 2 1...

Страница 2: ...11 4 7 1 3 IRIG connector 12 4 7 2 Rear Connectors 12 4 7 2 1 Multi I O Connector 13 4 7 2 2 Mini USB connector 14 4 7 2 3 SYNC connector 14 4 8 Installation 15 4 9 Connecting the DS GPS CLOCK to the...

Страница 3: ...uctions 24 6 1 Safety symbols in the manual 24 6 2 General Safety Instructions 24 6 2 1 Environmental Considerations 25 6 2 2 Product End of Life Handling 25 6 2 3 System and Components Recycling 25 6...

Страница 4: ...bols and formats will be used throughout the document Important It gives you important information about the subject Please read carefully Hint It gives you a hint or provides additional information a...

Страница 5: ...20 k Isolation 150 VDC Trigger accuracy 1 sec IRIG output specifications Supported codes IRIG code B DC Isolation None Accuracy 1 sec delay to GPS PPS GPS specifications General 12 channel L1 frequenc...

Страница 6: ...pecifications Operation temperature 5 C to 70 C Storage temperature 20 C to 85 C Humidity 10 to 80 non condensing Dimensions W x D x H 133 x 104 x 43 mm 5 23 x 4 1 x 1 7 in Weight approx 330 g 0 72 lb...

Страница 7: ...source This allows completely synchronized data acquisition of multiple systems whether they are mobile or stationary Additionally the DS GPS CLOCK can also be used as an IRIG time code generator outp...

Страница 8: ...clock the programmable clock divider generates the clock frequency for the standard data acquisition system which is being output on the 9 pin DSUB connector or 4 pin Lemo connector 4 2 IRIG based ope...

Страница 9: ...all round view to the sky Allow the GPS to map the satellites for at least 20 to 30 minutes The GPS builds up the Ephemeris data on each satellite which is stored in a non volatile memory so that futu...

Страница 10: ...the synchronization of the system LEMO SYNC CBL FGG00050 0500N2 2xFGG 00 304 CLAD35ZN 0 5m USB mini cable for connecting the device to the SBOX or PC CABLE USBAmini USBBS 1 8m CABLE GLONASS RG174 ANT...

Страница 11: ...LOCK TECHNICAL REFERENCE MANUAL 4 7 1 2 Aerial connector 4 7 1 3 IRIG connector DS GPS CLOCK V20 2 11 28 Image 6 SMA connector Pin Description 1 Hot 2 shield Image 7 BNC connector Pin Description 1 ou...

Страница 12: ...DS GPS CLOCK TECHNICAL REFERENCE MANUAL 4 7 2 Rear Connectors Image 8 Rear Connectors DS GPS CLOCK V20 2 12 28...

Страница 13: ...mage 10 MULTI I O cable DS GPS CLOCK V20 2 13 28 Image 9 DSUB 9 male connector Pin Name Description 1 n c Not Connected 2 n c Not Connected 3 CLK OUT Scan clock output 4 n c Not Connected 5 n c Not Co...

Страница 14: ...YNC connector Interface connector EEG 00 304 CLL Mating connector FGG 00 304 CLAD27Z DS GPS CLOCK V20 2 14 28 Image 11 Sync connector pin out 4 pin LEMO female Pin Name Description 1 CLK Clock 2 Trigg...

Страница 15: ...al 4 9 Connecting the DS GPS CLOCK to the DAQ System 4 9 1 Synchronization to system with Clock and Trigger To synchronize standard data acquisition systems a start trigger and the possibility of exte...

Страница 16: ...into this directory add individual directories or remove unused directories from the box Convert the maps to jpg or bmp format before selecting them 4 10 3 Timing settings When you want to use the DS...

Страница 17: ...DS GPS CLOCK TECHNICAL REFERENCE MANUAL b GPS input Image 14 GPS as external source DS GPS CLOCK V20 2 17 28...

Страница 18: ...This selects the modulation type AC or DC of the IRIG input signal Output settings The check box IRIG Out enables the output of the internally generated IRIG signal on the BNC connector of the DSCLOCK...

Страница 19: ...speed for getting the displacement Only speed levels above 0 5 km h are used to calculate the distance Used sat Numbers of satellites used for calculation of position and speed Current sec Seconds si...

Страница 20: ...the screen A green clock next to this time indicates that the DS GPS CLOCK is locked to the GPS or IRIG time whereas a red clock with additional Sync Lost warning indicates that the DS GPS CLOCK does...

Страница 21: ...acquisition In this example the drift of the oscillator is smaller than the allowed 2 ms fixed A This state shows the normal operation The internal clock is synchronized to the GPS IRIG once per secon...

Страница 22: ...cally sets the data acquisition hardware to external clocking for receiving the sample frequency out of the DS GPS CLOCK In addition each measurement starts synchronized with the PPS signal The time i...

Страница 23: ...needs to be calibrated at regular intervals The standard norm across nearly every industry is annual calibration Before your Dewesoft data acquisition system is delivered it is calibrated Detailed cal...

Страница 24: ...e logo When used in text representing the company product or technology name the sign is not used The Dewesoft triangle logo is a registered trademark but the sign is not used in the visual representa...

Страница 25: ...Use this system under the terms of the specifications only to avoid any possible danger Read your manual before operating the system Observe local laws when using the instrument DO NOT touch internal...

Страница 26: ...d obviously or causes strange noises the system does not work anymore The system has been exposed to long storage in adverse environments the system has been exposed to heavy shipment strain Warranty...

Страница 27: ...as well as the security advice of the connected systems This product has left the factory in safety related flawlessness and in proper condition In order to maintain this condition and guarantee safe...

Страница 28: ...S CLOCK TECHNICAL REFERENCE MANUAL 7 Version History Revision number 57 Last modified Wed 04 Sep 2013 11 02 DS GPS CLOCK V20 2 28 28 Doc Version Date dd mm yyyy Notes 1 0 0 04 09 2013 initial version...

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