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FireFly-1A User

Manual

Document:

80200501

Version:

1.2

Date:

6 July, 2011

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Содержание FireFly-1A GPSDO

Страница 1: ...FireFly 1A User Manual Document 80200501 Version 1 2 Date 6 July 2011...

Страница 2: ...FireFly 1A User Manual Copyright 2010 2011 Jackson Labs Technologies Inc...

Страница 3: ...SATellite 8 3 3 2 GPS SATellite TRAcking COUNt 8 3 3 3 GPS SATellite VISible COUNt 8 3 3 4 NMEA Support 8 3 3 5 GPS GPGGA 9 3 3 6 GPS GGASTat 9 3 3 7 GPS GPRMC 9 3 3 8 GPS XYZSPeed 9 3 3 9 GPS POSitio...

Страница 4: ...Vo TEMPCOmpensation 17 3 9 7 SERVo AGINGcompensation 17 3 9 8 SERVo PHASECOrrection 17 3 9 9 SERVo 1PPSoffset 17 3 9 10SERVo TRACe 18 3 9 11SERVo 18 4 Firmware Upgrade Instructions 21 4 1 Introduction...

Страница 5: ...2011 Jackson Labs Technologies Inc iii FireFly 1A User Manual 6 Certification and Warranty 37 6 1 Certification 37 6 1 1 Warranty 37 6 1 2 Limitation of Warranty 37 6 1 3 Exclusive Remedies 38...

Страница 6: ...FireFly 1A User Manual iv 2011 Jackson Labs Technologies Inc...

Страница 7: ...ckson Labs Technologies Inc assumes no liability for the customer s failure to comply with these requirements 1 2 1 Grounding To avoid damaging the sensitive electronic components in the FireFly 1A GS...

Страница 8: ...FireFly 1A User Manual 2 2011 Jackson Labs Technologies Inc...

Страница 9: ...Connect a clean 12V power supply to J5 The connector style is a MolexPart Number 22 23 2031 connector Warning Do not reverse the polarity of the power connector this will damage the unit 2 1 1 Major...

Страница 10: ...output strings The GPS receiver generates a 1PPS time signal that is phase synchronized to UTC This 1PPS signal is used to frequency lock the 10MHz Sine Wave output of the FireFly 1A GPSDO to UTC thus...

Страница 11: ...tory settings may result in the unit s performance to deteriorate The commands to control the loop parameters are part of the servo command See also the SERVO Subsystem section below The individual co...

Страница 12: ...FireFly 1A User Manual 6 2011 Jackson Labs Technologies Inc Figure 2 2 FireFly 1A phase compensation plot...

Страница 13: ...dditional information regarding the SCPI protocol syntax can be found on the following web site http www scpiconsortium org Please refer to the document SCPI 99 pdf for details regarding individual SC...

Страница 14: ...an industry standard navigation GPS receiver The GPGGA and GPRMC NMEA commands comprise all necessary information about the antenna position height velocity direction satellite info fix info time dat...

Страница 15: ...cimal number indicating the lock state of the unit Please see section SERVo TRACe for a detailed description of the lock state variable The command allows capture of the position and other information...

Страница 16: ...ize the GPS receiver 3 3 11 GPS This query displays the configuration position speed height and other relevant data of the GPS receiver in one convenient location 3 4 PTIME Subsystem The PTIME subsyst...

Страница 17: ...n of the FireFly 1A with the GPS receiver The list of the commands supported for this subsystem is the following SYNChronization SOURce MODE GPS EXTernal AUTO SYNChronization SOURce STATE SYNChronizat...

Страница 18: ...Receiver is not in holdover a value of 1 indicates the Receiver is in holdover 3 5 3 SYNChronization HOLDover INITiate The command will place the unit into a forced holdover state while still indicat...

Страница 19: ...oo high and the UTC phase offset is 250ns then the following errors would be indicated 1 UTC phase 250ns 0x4 2 OCXO voltage too high 0x40 3 GPS in holdover 0x10 Oring these values together results in...

Страница 20: ...ontrol ABSolute 3 6 1 DIAGnostic ROSCillator EFControl RELative This query returns the Electronic Frequency Control EFC output value of the internal reference oscillator It returns a percentage value...

Страница 21: ...8400 57600 115200 SYSTem STATus SYSTem FACToryReset ONCE 3 8 1 SYSTem COMMunicate 3 8 1 1 SYSTem COMMunicate SERial ECHO This command enables disables echo on RS 232 This command has the following for...

Страница 22: ...POS SERVo TEMPCOmpensation float 4000 0 4000 0 SERVo AGINGcompensation float 10 0 10 0 SERVo PHASECOrrection float 100 0 100 0 SERVo 1PPSoffset int ns SERVo QUIet ON OFF SERVo TRACe int 0 255 SERVo 3...

Страница 23: ...nd adjusted over time by the Jackson Labs Technologies Inc firmware This command has the following format SERVo TEMPCOmpensation float 4000 0 4000 0 3 9 7 SERVo AGINGcompensation This parameter is a c...

Страница 24: ...e Sats Tracked Lock State Health Status Please see the SYNChronization command for detailed information on how to decode the health status indicator values Note health status information is available...

Страница 25: ...2011 Jackson Labs Technologies Inc 19 FireFly 1A User Manual SERVo AGINGcompensation SERVo PHASECOrrection SERVo 1PPSoffset SERVo TRACe...

Страница 26: ...FireFly 1A User Manual 20 2011 Jackson Labs Technologies Inc...

Страница 27: ...son labs com support html The Flash Magic utility is available for download on the Flash Magic website http www flashmagictool com 4 2 1 Philips LPC2000 Flash Utility The first is the Philips LPC2000...

Страница 28: ...power on the unit is not in ISP mode Figure 4 1 Location of J2 4 4 Downloading the firmware Download the latest version of FireFly 1A firmware from the Jackson Labs Technologies Inc support website an...

Страница 29: ...y Set the COM port in the LPC2000 application as needed on your PC B Select the Baud Rate of the LPC2000 utility to be 38400 or slower Faster Baud rates will not work properly C Press the READ DEVICE...

Страница 30: ...load Press the OK button and the download should start Sometimes the utility gets confused and this process from item 4 4 B has to be tried several times It is not necessary to press reset as the util...

Страница 31: ...2011 Jackson Labs Technologies Inc 25 FireFly 1A User Manual Figure 4 4 Flash Magic utility B Press the Select Device button and the window shown in Figure 4 5 will appear...

Страница 32: ...FireFly 1A User Manual 26 2011 Jackson Labs Technologies Inc Figure 4 5 Device selection window C Expand the ARM7 folder and select the appropriate processor in this case the LPC2138...

Страница 33: ...e unit will not operate and will have to be returned to the factory Checking this box on the ISP utility will thus void the warranty G Under Step 3 Hex File browse for the hex file that you downloaded...

Страница 34: ...FireFly 1A User Manual 28 2011 Jackson Labs Technologies Inc...

Страница 35: ...e data correctly If you encounter this problem it is recommended that you install GPSCon on a slower computer using Windows XP 5 2 Installation Follow the directions that come with GPSCon for installi...

Страница 36: ...115200 parity to None Data Bits to 8 and Stop Bits to 1 Set Flow Control to None Once you have configured the communication parameters press the OK button to close the window 5 3 1 2 Auxiliary parame...

Страница 37: ...2011 Jackson Labs Technologies Inc 31 FireFly 1A User Manual Figure 5 2 Setting the communications parameters...

Страница 38: ...d such as paths for logging or exporting graphics 5 3 2 Sending manual commands to the receiver You can send SCPI commands manually by using the drop down box under the display window as shown in Figu...

Страница 39: ...es the span setting To display all of the data in the file without manually setting the span to zero you should right double click in the graph This has the effect of setting the start time to zero th...

Страница 40: ...have locked the start and stop time using the mouse you can scroll left or right through the data without changing the span To scroll to a later time use Shift Left click To scroll to an earlier time...

Страница 41: ...ogfile contents Use the checkbox All to make this choice You may nominate a size in X and Y The file format may be BMP JPG GIF or PNG Your settings will be stored and will be the default next time you...

Страница 42: ...ith and without GPS reception of course The OCXO heater current is shown in turqoise We can see it ranges from 0 135607A to 0 178146A The OCXO current jumps lower every 24 hours because the unit is si...

Страница 43: ...tomer shall prepay shipping charges and shall pay all duties and taxes for products returned to Jackson Labs Technologies Inc for warranty service Except for products returned to Customer from another...

Страница 44: ...kson Labs Technologies Inc products are not intended for use in medical life saving or life sustaining applications 6 1 3 Exclusive Remedies THE REMEDIES PROVIDED HEREIN ARE THE CUSTOMER S SOLE AND EX...

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