RCM Reference User Manual - Jackson Labs Technologies, Inc.
Contents
1. Ve Y 6 0 0 a oo 30 J PONER RS 232 ate gt R15 00 DOR20 g gt Y 10ME E Out Pao SE E gua Ty ose porro SB A Ba 0013 1 2 8 8 ao o bre egos x a 1PPS LOCK OK y E 0000 1 050 Es D E u 0 U4 Lc E E U q Do A i 1 CL Hwi D1 y l 10MEz R30 N 2 US g os e pie SEE Gagos E DO ongs PO ove My RIT MA g al Os im in o im o o Ko 0e amp 1 a 3A sa lL 1 128010 nis e cm E Aa fae wa GEL 638 q i N ROL o 4 4 0 i a0 ao 5 NRC Em Bas ig pure ra Os ab gt e A Las Vegas NV 2go 2 Ds af 10MHz a 9 tc 2014 Wa a Ea 3 1 3 ao ROC1O0MEZ Rev 1 0 BE D b DU a 5 E o 5 100MEz OUT 5 age 3 8 1 Be 0 Ni e ei o CD ate WB XQ 2 cas 8 T7 200 ors Table 2 1shows the RCM Reference revision 1 0 hardware pin descriptions Table 2 1 RCM Reference hardware connectors Ref Name Function Specification Description J1 Pins GROUND GROUND GROUND GROUND 1 2 5 6 9 11 12 13 15 17 18 19 21 23 25 27 29 30 J1 Pin 3 12V Prime Prime Power 12V DC 1V lt 50mV AC DC 12V Power Input and Pin 4 Power 1A during warmu2. 24 3 9 5 SERVo EFCScale 24 3 9 6 SERVo EFCDamping 25 3 9 7 SERVo SLOPe BS 8 a cath ds atte My Bh alts Si ds a A O 3 9 8 SERVo TEMPCOmpensation go caga 667 tet AE A Ginko Gtk A ee GO 3 9 9 SERVo AGINGcompensation 25 3 9 10SERVo PHASECOrrection 25 3 9 11SERVo 1PPSoffset sa 2B 3 9 12SERVo TRACe sa ca s sesa asa 2B SQL ISSERVO a som d 4 amp a a du a amp 4 oa oa oa 426 4 Firmware Upgrade Instructions 29 4 1 Introduction do BI a dw me E E a a ee o i a LO 4 2 ISP Flash Loader Utility installation co ied Bw la o ge Poe wt we etd amp aed 4 2 1 Philips LPC2000 Flash Utility Be a non HA 4 ee ee 29 4 2 2 Flash Magic Flash Programming Utility Er Ad SR ocala OO 4 3 Putting the PCB into In Circuit RS ee mode Pee te oe ee ds 4 90 4 4 Downloading the firmware bh A hk a 2x80 4 4 1 Philips LPC2000 Flash Utility tip of fo Oe oe ek ee A 80 4 4 2 Flash Magic Flash M uti ee ee ob Rw ce Se Sa EE 292 4 5 Verifying Firmware Update ek A E a O 5 GPSCon Utility 37 5 1 Description s s s s os eca a goa a Poe doa ao 37 5 2 Installation s s a om BT 5 3 Using GPSCon uk at a SONS a io qt te Si ah de ae An wy Ge Ue fe ae as O
3. 14 3 3 2 GPSIGPGGA z a s s a soa roi atm doree al iie 4 3 3 3 GPS GGASTat a si e s eom droa dom a a oa oe 2 15 3 3 4 GPS GPRMC a AB 3 3 5 GPS GPZDA NS 3 3 6 GPS INITial DATE lt yyyy mm dd gt an eo ne fe ae ie a a a lo 3 3 7 GPS INITial TIME lt hour min sec gt 16 3 4 PTIME Subsystem E 3 4 1 PTIMe DATE a 16 3 4 2 PTIMe TIME cl a 16 3 4 3 PTIMe TIME STRing 16 3 4 4 PTIMe TINTerval 16 3 4 5 PTIME fee AS as UR Ra RAR ca a DE a a i 516 3 5 SYNChronization Subsystem Ea c be 4 we SS RE amp ee amp amp TIE 3 5 1 SYNChronization HOLDover DURation bow eae Bo Be eke aw te a te Ge 3 5 2 SYNChronization HOLDover INITiate gt o a Go Gh es ie Ba ee 3 5 3 SYNChronization HOLDover RECovery INITiate as S v o das a do a 8 3 5 4 SYNChronization SOURce MODE nao ao ge Ga es ra lO 3 5 5 SYNChronization PLL 10MHZ NARrow MEDium WiDe bop eo ble 8 18 3 5 6 SYNChronization PLL 100MHZ aaa MEDium du nee O 3 5 7 SYNChronization PLL o e e dio LE LE AB 3 5 8 SYNChronization SOURce STATE ee ey ee ie ee O 3 5 9 SYNChronization TINTerval 19 3 5 10SYNChronization FEEstimate 19 2014 Jackson Labs Technologies Inc 1 RCM Referenc
4. Aux request string meas curent lt CR gt M Log Axl or Log Max SS Aux2 request string DATA E1 lt CR gt T Log Aux2 or Log Min SS Aux3 request string DATA E47 lt CR gt T Log Aux3 Traces to be visible on the graph F EFC Mag Hold Min Max Filter Fit coeff Label Offset mon M A OCXO cur fi jo r fo foz r pos 7 pu Tae fos fo ro 023 pos F Sas Aug f fo r fo 103 0 05 5 3 1 3 Other options The other tabs in the options window can be selected and you can set whatever options you need 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 Figure 5 4 Care must be taken when sending these commands so be sure that the command that you select is supported by the RCM Reference Once you ve selected the command you can press Send to send it to the RCM Reference 40 2014 Jackson Labs Technologies Inc Jackson 7 Figure 5 4 Sending manual commands Status Time Map Graph Export Help About VdmLabs Firmware Rev 2 19 a He fel Not Tracking 3 t im PRN El Az 15 2 147 Stop 18 7 261 26 4 118 Hide UTC 22 56 52 28 Oct 2018 LAT N 37 16 52 397 LON Y 121 59 15 645 74 16 m HSL OCXO Current OK GPS Receiver Status 3D Fix 1PPS SOURCE MODE GPS GPSDO Status Locked DIAG LOG READ ALL DIAG LOG READ DIAG
5. Flash Magic NON PRODUCTION USE ONLY SO Le ENTE File ISP Options Tools Help B vE gt 9 8 083 LPC2101 LPC2102 LPC2103 LPC2104 LPC2105 4 LPC2106 4 LPC2109 4 LPC2114 4 LPC2119 4 LPC2124 4 LPC2129 4 LPC2131 4 LPC2132 LPC2134 Lanman On Line training classes for microcontrollers and embedded networking and Internetworking www esacademy com fag classes D Select the Baud Rate of the Flash Magic utility to be 38400 or slower Faster Baud rates will not work properly E Set the Oscillator MHz to 10 F Check the box marked Erase blocks used by Hex File Warning Make sure NOT to check the box marked Erase all Flash Code Rd Prot under any circumstances this may erase factory calibration data and the 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 in step 4 4 H Go to Step 5 and press Start You will observe the firmware being downloaded to the REM Reference 4 5 Verifying Firmware Update Power cycle the unit with the pin 16 of J1 ISP left floating The Red LED should light up momentarily During power on the unit sends an ID string out of the serial port at 115200 Baud by default The firmware version can also be queried by sending the IDN command Verify that the firmware version is
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7. 5 3 1 Setting the options ke E ba ED ES EG ee as BL 5 3 1 1 Communication Parameters Ee A ABL MIR ESG ee OG 2 2014 Jackson Labs Technologies Inc J a ck S on RCM Reference User Manual Labs 5 3 1 2 Auxiliary parameters 38 5 3 1 3 Other options Li BUS us Gow aw db ak amp a an BAO 5 3 2 Sending manual commands to the 1 receiver 40 5 3 3 Use of the mouse in graph mode 41 5 3 4 Exporting the graphics 43 5 4 Interpreting the Data 44 6 Certification and Warranty 45 6 1 Certification AD 6 1 1 Warranty 4M Wea Da ME amp Ee Ye aoe a at eed 6 1 2 Limitation of Warranty gd bg REDE A E RA DDS RI GO ie A AS 6 1 3 Exclusive Remedies 46 2014 Jackson Labs Technologies Inc 3 RCM Reference User Manual J a C k S onj Labs 4 2014 Jackson Labs Technologies Inc J a ck S on RCM Reference User Manual Labs Introduction 1 1 Overview The Jackson Labs Technologies Inc RCM Reference board is a ruggedized ultra low phase noise 10MHz 100MHz crystal oscillator reference The RCM Reference combines two low g ovenized crystal oscillators power supplies power filters two isolated 20 5dBm RF output amplifiers and optional ext
8. and ground to pins 1 and 2 of J1 gt The unit will consume up to 12W 1A of power during oscillator warmup Please note that the unit can operate as a highly stable and accurate reference source by itself in the absence of an external IPPS or 1OMHz reference input The unit will now lock to the external 10MHz or 1PPS signal Red LED D1 is blinking when a IPPS reference or 1OMHz reference is being received and will indicate proper lock and no events pending when the Green LED D1 goes on Once the green LED D1 is on the unit will output 1OMHz with significantly better than 1ppb frequency accuracy to the external reference The unit will lock to an external 1OMHz reference within less than 2 seconds typically once the OCXO has warmed up after power on which typically takes less than 4 minutes at room temperature The unit will take up to 1 hour to light up the Green LED when locked to only the external 1PPS input By default the unit prioritizes the 10MHz reference input over the external 1PPS input Lock to the external 10MHz reference is indicated by a bright solid Green light on LED D13 Lock of the internal 100MHz OCXO to the internal 10MHz OCXO is indicated by a bright solid light on LED D23 During OCXO warmup these LED s 2014 Jackson Labs Technologies Inc 5 RCM Reference User Manual J a ck S on Labs will blink quickly and the blinking will slow down as the OCXO approaches lock then light up continuously once lock i
9. 10MHz reference is not present this error status bit HEALTH STATUS l 0x4000 is disabled in 1PPS locking mode If a power supply failure is detected HEALTH STATUS l 0x8000 If 1PPS external reference is not present when in 1PPS locking HEALTH STATUS l 0x 10000 mode If a failure is detected in the CMOS 1PPS output signal driver HEALTH STATUS l 0x20000 As an example if the unit is in holdover and the OCXO voltage is too high and the 1PPS phase offset while in 1PPS locking mode is gt 250ns then the following errors would be indicated 1 1PPS phase gt 250ns 0x4 2 OCXO voltage too high 0x40 3 Unit is in holdover 0x10 Oring these values together results in 0x40 0x10 0x4 0x54 The unit would thus indicate HEALTH STATUS 0x54 A health status of 0x0 indicates a properly locked and warmed up unit that is completely healthy 3 5 14 SYNChronization This query returns the results of these four queries 20 2014 Jackson Labs Technologies Inc J a ck S on RCM Reference User Manual Labs SYNChronization SOURce MODE SYNChronization SOURce STATE SYNChronization LOCKed SYNChronization HOLDover DURation SYNChronization health 3 6 DIAGnostic Subsystem This subsystem regroups the queries related to the diagnostic of the OCXO The list of the commands supported for this subsystem is as follows DIAGnostic ROSCillator EFControl RELative DIAGnostic ROSCillator EFControl ABSolute DIAGnosti
10. ROSC EFC ABS DIAG ROSC EFC REL M Tlto DIAG TEMP F L DIAG TEST RES 99 DIAG TEST ALL T Contj GPS INIT DATE yr mo day GPS INIT POS N deg min sec Mm deg min sec elev Last error 22 39 39 28 10 10 UTC Receiver timeout 22 39 48 28 10 10 UTC Receiver timeout 22 39 58 28 10 10 UTC Receiver timeout 22 40 07 28 10 10 UTC Receiver timeout 22 40 23 28 10 10 UTC Receiver timeout 22 42 17 28 10 10 UTC Receiver timeout 5 3 3 Use of the mouse in graph mode Refer to Figure 5 5 for the following description In graph mode the span of the graph may be set using the span setting Alternatively the start and or stop time of the graph may be locked using the mouse Set the start time by left clicking on the desired start point If you wish the stop time may also be locked by right clicking the desired stop point This can all be unlocked by left double clicking anywhere on the graph Double click always causes all of the selected span data to be displayed At the next update cycle the selected span if not set to zero will be enforced However the left click and if chosen the right click always overrides 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 the stop time to infinity and asserting the mouse override condition To release left double click Since this is hard
11. can thus be auto synced to the CSAC GPSDO acting as the master reference to allow automatic time and date synchronization of 2014 Jackson Labs Technologies Inc 15 RCM Reference User Manual Ja ck S on Labs these units to each other The internal RTC is driven by the highly stable OCXO 10MHz signal and thus has very high accuracy 3 3 7 GPS INITial TIME lt hour min sec gt In order to have the RCM Reference generate valid time and date outputs the user must manually set the time in the RTC using this command This command is compatible to the PTIME OUT ON command available on the JLT CSAC GPSDO boards and the unit can thus be auto synced to the CSAC GPSDO acting as the master reference to allow automatic time and date synchronization of these units to each other The internal RTC is driven by the highly stable OCXO 10MHz signal and thus has very high accuracy 3 4 PTIME Subsystem The PTIME subsystem regroups all the commands related to the management of the time The list of the commands supported is the following PTIMe DATE PTIMe TIME PTIMe TIME STRing PTIMe TINTerval PTIME 3 4 1 PTIMe DATE This query returns the current calendar date The year month and day are returned 3 4 2 PTIMe TIME This query returns the current 24 hour time The hour minute and second is returned 3 4 3 PTIMe TIME STRing This query returns the current 24 hour time suitable for display for example 13 24 56 3 4 4 PT
12. the version that was downloaded 2014 Jackson Labs Technologies Inc 35 RCM Reference User Manual J a C k S onj Labs 36 2014 Jackson Labs Technologies Inc J a ck S on RCM Reference User Manual Labs GPSCon Utility 5 1 Description GPSCon is a program for the monitoring and control of a variety of GPS time and frequency standard receivers It communicates with the receiver using the SCPI command set This utility can be obtained directly from Real Ham Radio com at the following URL http www realhamradio com gpscon buy now htm GPSCon can be used to monitor the RCM Reference even though the board does not contain an internal GPS receiver Important note On newer faster computers running Windows 7 GPSCon may not acquire 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 installing the utility on your computer 5 3 Using GPSCon The GPSCon utility has a help file that should be consulted in order to get the full functionality of this utility Only a few of the features and commands are mentioned in this appendix for convenience 5 3 1 Setting the options To set up the options for your GPSCon session press the Options button below the display area The window shown in Figure 5 1 will appear You can select from the tabs which options you wish to set 2014
13. which time the FASTLOCK gain is slowly decreased from its initial value to 1 0x Setting the FASTLOCK gain to 2 for example will result in the Proportional gain value stored in the SERVo EFCscale parameter to be multiplied by 2x initially after power on This dynamic gain is slowly reduced until the gain is back to 1 0x the value stored in the SERVo EFCScale parameter 2014 Jackson Labs Technologies Inc 23 RCM Reference User Manual Ja ck S on Labs For example if we set SERVo FASTlock to 2 and SERVo FALEngth to 3600 and SERVo EFCScale is set to 0 7 Then initially the unit will multiply the EFCscale by 2x and an effective EFCscale value of 1 4 is applied to the PLL loop This increased gain value difference will be reduced every second by 1 3600 so that the gain after two seconds would be 1 3998 until after 3600 seconds the gain has been reduced back to its long term value of 0 70 as stored in the SERVo EFCscale parameter Disabling the FASTLOCK mode is accomplished by setting the SERVo FASTlock to 1 This will set the dynamic gain to 1 0 effectively disabling the fastlock feature This command has the following format SERVo FASTlock lt int gt 1 20 3 9 2 SERVo FALEngth This command adjusts the length of time during which the FASTLOCK feature is active please see the command SERVo FASTlock above It can be set from 100 seconds to 20 000 seconds The Dynamic FASTLOCK gain is slowly reduced until it reaches a ga
14. 0 6 0x54 2014 Jackson Labs Technologies Inc 25 RCM Reference User Manual Ja ck S on Labs date 1PPS Count Fine DAC UTC offset ns Frequency Error Estimate Sats Visible Sats Tracked Lock State Health Status Please see the SYNChronization command for detailed information on how to decode the health status indicator values The Lock State variable indicates one of the following states Value State 0 OCXO warmup 1 Holdover 2 Locking OCXO training 4 Value not defined gt Holdover but still phase locked stays in this state for about 100s after external 1PPS lock is lost 6 Locked and GPS active 3 9 13 SERVo This command returns the result of the following queries SERVo COARSeDac SERVo DACGain SERVo EFCScale SERVo EFCDamping SERVo SLOPe SERVo TEMPCOmpensation SERVo AGINGcompensation SERVo PHASECOrrection SERVo 1PPSoffset SERVo TRACe 26 2014 Jackson Labs Technologies Inc RCM Reference User Manual Jackson 7 2014 Jackson Labs Technologies Inc 27 RCM Reference User Manual J a C k S onj Labs 28 2014 Jackson Labs Technologies Inc J a ck S on RCM Reference User Manual Labs Firmware Upgrade Instructions 4 1 Introduction The following is a short tutorial on how to upgrade the RCM Reference firmware Please follow the instructions in order to prevent corrupting the RCM Reference Flash which may require reflashing at the factor
15. 000 0 3 9 7 SERVo SLOPe The parameter determines the sign of the slope between the EFC and the frequency variation of the OCXO This parameter should be set to match your OCXO s EFC frequency slope This command has the following format SERVo SLOPe lt NEG POS gt 3 9 8 SERVo TEMPCOmpensation This command is not supported on the RCM Reference board 3 9 9 SERVo AGINGcompensation This parameter is a coefficient that represents the drift of the EFC needed to compensate the natural drift in frequency of the OCXO due to aging This coefficient is automatically computed and adjusted over time by the Jackson Labs Technologies Inc firmware This command has the following format SERVo AGINGcompensation lt float gt 10 0 10 0 3 9 10 SERVo PHASECOrrection This parameter sets the Integral part of the PID loop Loop instability will result if the parameter is set too high Typical values are 10 0 to 30 0 This command has the following format SERVo PHASECOrrection lt float gt 100 0 100 0 3 9 11 SERVo 1PPSoffset This command is not supported on the RCM Reference board 3 9 12 SERVo TRACe This command sets the period in seconds for the debug trace Debug trace data can be used with Ulrich Bangert s Plotter utility to show UTC tracking versus time etc This command has the following format SERVo TRACe lt int gt 0 255 An example output is described here 08 07 31 373815 60685 32 08 2 22E 11 14 1
16. 43 RCM Reference User Manual Ja ck S on Labs 5 4 Interpreting the Data Figure 5 5 shows the data acquired by the RCM Reference unit over a period of more than 200 hours The red trace is EFC crystal frequency control voltage The crystal is aging becoming faster in frequency over time This requires the control voltage to be lowered to maintain 10 0MHz exactly A drift of 2mV is visible over 200 hours On the left side of the screen the EFC range over this 200 hour plot is displayed vertically as 0 00193V This means the drift of the EFC voltage due to aging is 88mV per year The EFC sensitivity of the crystal is about 8Hz per volt so the crystal ages at 8Hz V 0 088V Year 0 704Hz Year drift At 10MHz 0 704Hz 10MHz 7 04E 08 aging rate per year This is the same as 0 2ppb drift due to aging per day This crystal aging is fully compensated by the firmware with and without GPS reception of course In Figure 5 6 which is a zoom of Figure 5 5 we can see the phase offset error of the internal OCXO to the external 1 PPS reference We can see the maximum drift is 77ns to 93ns The average is TI av 0 03ns The standard deviation over the 200 hour plot is sd 1 Ins This means the average error of the 1OMHz phase of this unit over 200 hours is only 11ns rms Or in other words the average jitter wander over 200 hours of operation is lins 200Hrs 1 528E 014 or in other words the unit performs as well as a high quality
17. 5 SERVo DACGain lt int gt 0 1 10000 SERVo EFCScale lt float gt 0 0 500 0 SERVo EFCDamping lt float gt 0 0 4000 0 SERVo SLOPe lt NEG POS gt SERVo TEMPCOmpensation lt float gt 4000 0 4000 0 SERVo AGINGcompensation lt float gt 10 0 10 0 SERVo PHASECOrrection lt float gt 100 0 100 0 SERVo 1PPSoffset lt int gt ns SERVo QUIet lt ON OFF gt SERVo TRACe lt int gt 0 255 SERVo FASTlock lt int gt 1 20 SERVo FALEngth lt int gt 100 20000 SERVo 3 9 1 SERVo FASTlock The FASTIock feature is only available when operting in the IPPS LOCK mode It is not active when locking to an external 1OMHz reference input The FASTlock command enables the FASTLOCK mode and sets its gain parameter Fastlock works by momentarily multiplying the EFCScale gain to a value determined by this SERVo FASTlock parameter Gain values of 1x to 20x can be set with a gain of 1x effectively disabling the FASTLOCK feature By selecting gain values of gt 1 the PLL loop parameter Proportional gain SERV EFCscale will be increased after power on thus increasing loop aggressiveness and improving lock PLL time It is not desirable to maintain a high loop gain for longer than necessary to lock the PLL since high loop gains come at the expense of increased phase noise reduced short term stability The FASTLOCK mechanism will automatically reduce the FASTLOCK gain over a period of time specified by the SERVo FALEngth command during
18. Cesium Atomic reference clock over long periods of time The unit disciplines its internal 1OMHz reference to within less than 80ns peak to peak of the external 1PPS reference at all times which is less than one complete clock cycle at 10MHz 44 2014 Jackson Labs Technologies Inc J a ck S on RCM Reference User Manual Labs Certification and Warranty 6 1 Certification Jackson Labs Technologies Inc certifies that this product met its published specifications at time of shipment 6 1 1 Warranty This Jackson Labs Technologies Inc hardware product is warranted against defects in material and workmanship for a period of 1 one year from date of delivery During the warranty period Jackson Labs Technologies Inc will at its discretion either repair or replace products that prove to be defective Jackson Labs Technologies Inc does not warrant that the operation for the software firmware or hardware shall be uninterrupted or error free even if the product is operated within its specifications For warranty service this product must be returned to Jackson Labs Technologies Inc or a service facility designated by Jackson Labs Technologies Inc Customer 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 country Jackson Labs Technologies Inc shall pay for return of products
19. FireFly Il Firmware Rev 2 19 Lite go 02 36 34 16 11 10 EFC 2 414181 ad 0m sd 0 04m J TI max ns 20 594 0 17 Temp st dr Filter coeff 0 025 Span mins 15000 Stop Hide Not Tracking 0 PRN El As 2 41396 0 13560 3 0 TI av 0 03n sd 11n VTC 2 36 25 16 Now 2010 Lat N 27 15 39 756 LON W 11 57 40 127 86 80 m MSL Sat count is lu 77 0 ns start 14 45 02 07 11 10 UTC 203 86 hrs Send senztar y 18 02 47 15 11 10 UTC Receiver timeout tar T Log Status N Log sat count Translate time codes 2594 95 6348 7 66236 0 0054106 4 072305 0 00530379 M Log EFC 2 414181 Options Pp V Tlto GPS T 18 08 0 157483 FT Log PU fi Client mode A Lans Update now I Continuously read error queue Flash LED Last error Set sy me 0 2014 Jackson Labs Technologies Inc Jackson 7 Figure 5 6 Expanded Graph Display GPSCon Utility Pro GPSCon COM8 Status Time Map J Graph Export Help About RCM Reference User Manual E ackson Labs FireFly ll Firmware Rev 2 19 o Lite fed 02 38 51 16 1410 EFC 2 414208 ad 0m sd 0 05m I TI max ns 20 H 2 4r A 159494 Temp E Filter coeff 0 025 Stat Span mins 15000 Stop Hide Not Tracking l PRN El z 15 1 40 na h AN Ay i VTC 1 35 45 16 Now 2010 LaT N 27 15 29 756 LON W 121 57 40 195 7 20 m MSL q Sat count 69 0 ns start 17 27 41 15 11 10 UTC Send serv tar y 18 02 47 15 11 10 UTC
20. IMe TINTerval This query is equivalent to the command SYNChronization TINTerval 3 4 5 PTIME This query returns at once the result of the three following queries PTIME DATE PTIME TIME 16 2014 Jackson Labs Technologies Inc J a ck S on RCM Reference User Manual Labs PTIME TINTerval 3 5 SYNChronization Subsystem This subsystem regroups the commands related to the synchronization of the RCM Reference with the external 1PPS or 1OMHz reference The list of the commands supported for this subsystem is the following SYNChronization SOURce MODE 10MHZI PPSIAUTO SYNChronization SOURce STATE SYNChronization HOLDover DURation SYNChronization HOLDover STATe SYNChronization HOLDover INITiate SYNChronization HOLDover RECovery INITiate SYNChronization OUTput 1PPS RESET ONIOFF SYNChronization TINTerval SYNChronization IMMEdiate SYNChronization FEEstimate SYNChronization LOCKed SYNChronization 3 5 1 SYNChronization HOLDover DURation This query returns the duration of the present or most recent period of operation in the holdover and holdover processes This is the length of time the reference oscillator was not locked to the external 1PPS or 10MHz reference and thus coasting The time units are seconds The first number in the response is the holdover duration The duration units are seconds and the resolution is 1 second If the Receiver is in holdover the response quantifies the current holdover durat
21. Jackson N RCM Reference User Manual ocument 80200519 RCM Reference User Manual Copyright O 2011 2012 2013 2014 Jackson Labs Technologies Inc J a ck S on RCM Reference User Manual Labs 1 Introduction 1 1 Overview 1 2 General Safety Precautions ET 1 2 1 Antenna Lightning Protector 1 2 2 Grounding Po 1 2 3 Power Connections 1 2 4 Environmental Conditions GO GO ND ND ND D 2 Quick Start Instructions pdas ere O 2 1 Powering Up the Unit 2 a 5 2 1 1 PCB Photos 6 2 1 2 Mechanical Drawings 6 2 1 3 Notes on Signal Interfacing 2 2 9 2 1 4 Coaxial Connectors opti E E ee AO 2 1 5 Main Power and Control Connector Sd das Te HS UE ok ee Pa ee ns OO 2 1 6 Typical Phase Noise Performance 10 2 2 Remote serial control ee ee 1 2 2 1 Loop parameter adjustment 11 3 SCPI Control Quick Start Instructions 13 8 1 Introduction E RR A Ge oe e ee ee ee ee ee E 3 2 General SCPI Commands Bee fe Ds ee ee ee el 3 2 1 Quick Start Commands 13 32 2 DNI sos mudo 4 Mo wR Re fa us BRD aa as a it CT 3 2 9 HELP ce dat O ain de da en 4 a 414 3 3 GPS Subsystem s ams soa TA 3 3 1 NMEA Support
22. Jackson Labs Technologies Inc 37 RCM Reference User Manual Figure 5 1 Options window Jackson ES A GPSCon Utility Pro GPSCon COMA O A A A O A E r Logging and graph Time J e p Graph Export Help About Max kB 0 unlimited z Interval 130 secs Bit from display Pixels 317 Local HTML and image files HTML file c program files amp 86 gpscon gpsstat htm Browse bitmap HTML update interval 30 secs m Satellite tracking history file Track file c program files amp 86 gpscon gpsdmp bin Browse Max kB 0 unlimited 512 Span 2020 er mins 5 3 1 1 Communication Parameters Paths 4 settings FTP Email Coms Time services Aundliary Aux coms Export graphics Remote control IV Log Status M Log EFC MN Log sat count M Tito GPS F Log PU MN Translate time codes Continuously read error queue Flash LED IV Use bitmap IV Statistics IV Show best fit to EFC T ANSI font in status F Timax g ns Filter coeff 0 025 Before you can use GPSCon you must set the communication parameters for your system Open the dialog box by pressing the Options button Then select the Coms tab You will see the window shown in Figure 5 2 Select the correct COM port for your computer and set the baud rate to 115200 parity to None Data Bits to 8 and Stop Bits to 1 Set Flow Control to None Once y
23. RCM Reference User Manual al a C k S onj Labs Figure 4 2 LPC2000 flash download E LPC2000 Flash Utility File Buffer Help LPC2000 Flash Utility V2 2 3 Flash Programming Erase Blank gt Communication Filename Connected To Port fe ARM Fury_GPSDO Application mainFur Blank Check Entire Device COMI X C Selected Sectors gro esse o a Upload to Flash ico ER cts E Start Sector 3 Ft rase Dz Compare Flash Aanual Rese EndSection a Time Out sec Pa Device Use DTR ATS Device LPC2106 ER Part 10 E for Reset and Boot Loader XTAL Freq kHz 10000 Device ID Boot Loader ID Selection Spa LPC2000 Flash Utility Reset Message Please reset your LPC2000 board now and then press OK OK 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 utility is asking Just press OK on the utility window s button Warning DO NOT PRESS THE ERASE BUTTON AT ANY TIME THIS WILL RENDER THE PCB USELESS AND CAN ONLY BE RECOVERED AT THE FACTORY 4 4 2 Flash Magic Flash Programming Utility A Open the Flash Magic utility Set the COM port in the Flash Magic application as needed on your PC Set Interface to None ISP 32 O 2014 Jackson Labs Technologies Inc J a C k S O n RCM Reference User Manual La
24. Receiver timeout z servitar T Log Status M Log sat count T7 Translate time codes 2584 95 6348 7 66236 0 0054106 4 072305 0 00530379 Log EFC 2414209 Options sepi gt IV Tlto GPS F11E 09 0 158524 I Log PU fl in el Update now D Continuously read error queue Flash LED Last error r 5 3 4 Exporting the graphics The settings which control the mode of the Export function are contained in the Options dialog Export allows you to create an image file of either the graph or the satellite map You select which you want using the radio buttons If you select Graph you have the option to export only that which is currently visible or to export the graph which is a plot of the entire logfile 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 open this dialog If you choose to export the graph you might want to override the TI max setting in force on the screen display You may do this by entering a non zero value into the Override TI control A value of zero causes the export to take the same setting if any as the screen display The export may be done automatically on a timed basis Simply enter a non zero value in seconds to choose an export time interval To manually export in accordance with the settings press the Export button 2014 Jackson Labs Technologies Inc
25. System Flash Firmware Update into In System Programming mode see chapter 4 for details mode for Flash memory upgrade of the firmware J1 Pin 20 1PPS OUTPUT 1PPS output sense 3 3V LVCMOS 3 3V Unit Locked to reference 1PPS and LOCK OK Lock and Event output is not damaged and no Built In Self Test indicator events are pending BIT OV Hardware or software Event is pending events can be queried via the syne health command J1 Pin 22 PLL OK BIT 10MHz and 100MHz 3 3V LVCMOS 3 3V 10MHz PLL if in external PLL OK indicator 10MHz REF IN mode and 100MHz PLL are locked and healthy OV 1OMHz or 100MHz PLL has failed to lock J1 Pin 24 10MHz REF IN Senses 10MHz external 3 8V LVCMOS 3 3V External 10MHz Ref Input is Sense BIT Reference receiving a high frequency AC signal AC signals gt 1MHz will be detected OV No AC signal detected on external 10MHz Ref Input J1 Pin 26 1PPS REF IN Senses 1PPS external 3 3V LVCMOS 3 3V External 1PPS Ref Input is Sense BIT Reference receiving a 1Hz reference signal OV No external 1PPS Ref Input detected J1 Pin 28 Power Supply Senses failure in internal 3 3V LVCMOS 3 3V Internal Power Supplies are Failure Sense BIT power supplies operating OV One or more internal Power Supplies has a failure J3 10MHz REF 10MHz Sine Wave 10MHz 4Hz 5dBm to 10MHz Reference Input the internal INPUT Reference Input 17dBm 22dBm damage OCXO s 1PPS counter and the level 50 Ohms terminated microprocessor are synchroniz
26. al number indicating the system s health status Error flags are encoded in a binary fashion so that each flag occupies one single bit of the binary equivalent of the hexadecimal health status flag 2014 Jackson Labs Technologies Inc 19 RCM Reference User Manual Jackson a The following system parameters are monitored and indicated through the health status indicator Individual parameters are ored together which results in a single hexadecimal value encoding the following system status information If the OCXO coarse DAC is maxed out at 255 HEALTH STATUS l 0x1 If the OCXO coarse DAC is mined out at 0 HEALTH STATUS l 0x2 If the phase offset to the external 1PPS reference is gt 250ns HEALTH STATUS l 0x4 If the run time is lt 300 seconds HEALTH STATUS l 0x8 If the OCXO is in holdover gt 60s If the Frequency Estimate is out of bounds If the OCXO voltage is too high If the OCXO voltage is too low HEALTH STATUS l 0x10 HEALTH STATUS l 0x20 HEALTH STATUS l 0x40 HEALTH STATUS l 0x80 If the short term drift ADEV 100s gt 100ns when 1PPS locked HEALTH STATUS l 0x100 For the first 7 minutes after a phase reset or a coarsedac change HEALTH STATUS l 0x200 If the 100MHz PLL is not locked to the internal 10MHz OCXO HEALTH STATUS l 0x400 If the 10MHz PLL is not locked to the external 10MHz reference HEALTH STATUS l 0x2000 this error status bit is disabled in 1PPS locking mode If the external
27. align its 1PPS output to exactly 100 000 000 cycles of the 1OOMHz output for a length of 20 48us 2 1 4 Coaxial Connectors The RF connectors of the RCM Reference are compatible to the Samtec MHIRP and Amphenol A 1JB series of connectors and sample mating cables can be purchased at www digkey com with part number MH113 MH1RP 01BJ1 0152 2 1 5 Main Power and Control Connector Power is applied to the RCM Reference board through the 30 pin Samtec connector J1 This connector has Samtec PN TFM 115 01 S D W T and is compatible to Samtec cable harnesses PN SFSDT 15 30 G 10 00 DR NDX and others The connector uses mechanical retention latches The unit is powered from a 11 0V to 13 0V DC source with 12 0V nominal voltage The current is typically less than 0 39A at 12V at 25C ambient steady state and 1A during OCXO warmup at 12 0V Connect a clean 12V power supply to pins 3 and 4 of J1 and ground to pins 1 and 2 of J1 2 1 6 Typical Phase Noise Performance The following figure shows a typical Phase Noise performance plot when the unit is in holdover mode 10 2014 Jackson Labs Technologies Inc J a C k S O n RCM Reference User Manual Labs RCM Reference Typical 100MHz Phase Noise in holdover mode 100MHZ REF vs 100MHz VCXO HP 3048A Carrier 100 E 6 Hz 2719714 19 11 44 19 23 23 40 50 60 70 100 LE 10K 100K Ef EdBe Hzl vs flhzl 2 2 Remote serial control The unit is controlled via the RS 232 serial port
28. at 115200 baud 8N1 Other Baud Rates can be set via SCPI commands Attach the RCM Reference unit to your PC s Hyperterminal the optional GPSCon software package see Chapter 5 of this manual or a third party freeware Windows based application program called Z38xx This program is available on the Jackson Labs Technologies Inc website under the following URL as a free download http www jackson labs com assets uploads main Z38XX zip 2 2 1 Loop parameter adjustment All loop parameters can be controlled via the serial port Loop parameters are optimized for the OCXO on the board when locking to the external 1PPS reference and changing the factory settings may result in the unit s performance to deteriorate These loop parameters do not affect the loop behavior when the unit is locking to the external 10MHz reference input The commands to control the loop parameters are part of the servo command See also the SERVO Subsystem section below The individual commands are EFC Scale this is the proportional gain of the PID loop Higher values will give quicker convergence and faster locking of the GPS time lower loop time constant lower values give less 2014 Jackson Labs Technologies Inc 11 RCM Reference User Manual J a C k S onj Labs noise Values between 0 7 good double oven OCXO and 6 0 simple single oven OCXO are typical EFC Damping overall IIR filter time constant higher values increase loop time c
29. bs Figure 4 3 Flash Magic utility lonaseva gt OS HE Step 1 Communications Select Device LPC2138 Erase block O 0x000000 0x000FFF Erase block 1 0x001000 0x001FFF COM Port COM 4 Erase block 2 0x002000 0x002FFF Erase block 3 0x003000 0x003FFF Baud Rate SADO Erase block 4 0x004000 0x004FFF Interface Erase block 5 0x005000 0x005FFF 10 Erase all Flash Code Rd Prot Oscillator MHz 7 Erase blocks used by Hex File Step 3 Hex File Hex File FireFly lA_2 19 hex Modified Unknown more info Verify after programming Fill unused Flash Gen block checksums Execute Your Training or Consulting Partner Embedded Systems Academy www esacademy com IL B Press the Select Device button and the window shown in Figure 4 4 will appear O 2014 Jackson Labs Technologies Inc 33 RCM Reference User Manual J a ck S on Labs Figure 4 4 Device selection window Flash Magic NON PRODUCTION USE ONLY File ISP Options Tools Help EATA HOLC ARM Cortex LPC900 2 clock 80051 80051 x Technical on line articles about 8051 and X programming www esacademy com fag docs C Expand the ARM folder and select the appropriate processor in this case the LPC2138 34 2014 Jackson Labs Technologies Inc J a C k S onj RCM Reference User Manual Labs Figure 4 5 Expanded device selection window
30. c LIFetime COUNt 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 between 100 to 100 3 6 2 DIAGnostic ROSCillator EFControl ABSolute This query returns the Electronic Frequency Control EFC output value of the internal reference oscillator It returns a value in volts between O and 5 V 3 6 3 DIAGnostic LIFetime COUNt This command returns the number of hours the unit has been powered on 3 7 MEASURE Subsystem This subsystem regroups the queries related of some parameters that are measured on board on the RCM Reference The list of the commands supported for this subsystem is the following MEASure VOL Tage MEASure CURRent MEASure 3 7 1 MEASure VOLTage This query returns the power supply voltage applied to the OCXO 10 45V 3 7 2 MEASure CURRent This command is not supported on the RCM Reference board O 2014 Jackson Labs Technologies Inc 21 RCM Reference User Manual J a ck S on Labs 3 7 3 MEASure This query returns the result of the following query MEASure VOLTage 3 8 SYSTEM Subsystem This subsystem regroups the commands related to the general configuration of the RCM Reference The list of the commands supported for this subsystem follows SYSTem COMMunicate SERial ECHO lt ON OFF gt SYSTem COMMunicate SERial PROmpt lt ON OFF gt SYSTem COMMu
31. e Changing the PLL bandwidth can have a significant impact on the close in phase noise of the 100MHZ output The default option is Narrow which will result in a 100MHz PLL loop bandwidth of less than 50Hz to the internal 10MHz OCXO The 1OMHz OCXO has slightly less g sensitivity 0 3ppb versus 0 5ppb per g per axis than the 100MHz OCXO so a wider PLL bandwidth may result in slightly lower phase noise under vibration Changing the loop bandwidth from narrow to wide also lowers the phase noise above the bandwidth limit at the expense of the phase noise below the loop bandwidth limit 3 5 7 SYNChronization PLL This query returns the results of these two queries SYNChronization PLL 10MHZ SYNChronization PLL 100MHZ 18 O 2014 Jackson Labs Technologies Inc J a ck S on RCM Reference User Manual Labs 3 5 8 SYNChronization SOURce STATE This query shows the state of the external 1OMHz 1PPS synchronization option 3 5 9 SYNChronization TINTerval This query returns the difference or timing shift between the RCM Reference 1PPS and the external IPPS signals The resolution is 1E 10 seconds 3 5 10 SYNChronization FEEstimate This query returns the Frequency Error Estimate similar to the Allan Variance using a 1000s measurement interval and comparing the internal 1PPS to the external 1PPS offset Values less than 1E 012 are below the noise floor and are not significant 3 5 11 SYNChronization LOCKed This query returns the lock
32. e User Manual J a ck S on Labs 3 5 11SYNChronization LOCKed ca RE D si 4 418 3 5 12SYNChronization OUTput 1PPS RESET IONOFFI E vip a ae ee ara 8 5 18SYNChronization health pe de ba me ga 4 a TD 8 5 14SYNChronization 20 3 6 DIAGnostic Subsystem ben S O C e RE AM ae 3 6 1 DIAGnostic ROSCillator EFControl RELative Sf p DP eh da eel 3 6 2 DIAGnostic ROSCillator EFControl ABSolute 21 3 6 3 DIAGnostic LlFetime COUNt 2 3 7 MEASURE Subsystem 21 3 7 1 MEASure VOLTage 21 3 7 2 MEASure CURRent a enaka n enra na 21 3 7 3 MEASUIO eo ce sa ona TA Udo tan de ven ele a AA 3 8 SYSTEM Subsystem be NON a WA cee a OR a Wi a a 422 3 8 1 SYSTem COMMunicate i ok oo wa E ww amp amp 22 3 8 1 1 SYSTem COMMunicate SERial ECHO wa a do UE a MO O 422 3 8 1 2 SYSTem COMMunicate SERial PROMpt 22 3 8 1 3 SYSTem COMMunicate SERial BAUD 22 3 8 2 SYSTem STATus E E COR 3 8 3 SYSTem es ONCE Ro SR E 3 9 SERVO Subsystem baud AA De lt A ee AAA 3 9 1 SERVo FASTlock s s s sa aa d ao k dorsa 28 3 9 2 SERVo FALEngth 28 3 9 3 SERVo COARSeDac 24 3 9 4 SERVo DACGain
33. ed to this reference 2014 Jackson Labs Technologies Inc Jackson 7 RCM Reference User Manual J7 10MHz Output Low Phase Noise DC coupled 5V CMOS 50 Ultra Low Phase Noise 10MHz 10MHz OCXO output Ohms series terminated do not reference output from internal end terminate signal with less Double Oven 10MHz OCXO than 1K Ohms phase locked to external 10MHz reference or external 1PPS reference J4 1PPS CMOS Primary 1PPS output 3 3V LVCMOS lt 1ns rise time 1PPS output signal rising edge 3 3V OUTPUT 1 50 Ohms series terminated aligned to external 1PPS reference output do not end terminate or driven by internal 10MHz OCXO signal with less than 1K Ohms phase when in holdover aligned to J2 1PPS external reference to within 2 5ns typically 20 48us pulse width J2 1PPS INPUT 1PPS External 1PPS pulse OV to 5V max 1PPS Reference Input The 1PPS Reference input maximum on duty cycle 50ms outputs are rising edge DC terminated to ground via 50 phase aligned to this input signal Ohms resistor within three seconds to better than 2 5ns typically J5 100MHz Output 100MHz Sine Wave AC coupled 1 00MHz Sine 100MHz Sine Wave output 1 Output Wave 20 5dBm 2dB 0 5dB phase locked to 10MHz internal terminate with 50 Ohms OCXO Harmonics lt 50dBc Spurious lt 80dBc 15V DC max allowed J6 100MHz Output 100MHz Sine Wave AC coupled 100MHz Sine 100MHz Sine Wave output 2 Output Wave 20 5dBm 2dB 0 5dB p
34. er to describe than to actually do here is a paraphrase of the above To zoom in The mouse is used to set the left extent and the right extent of the portion of the curve that the user wants to fill the screen Click once with the left mouse button on the point that marks the left side of what you want to be the magnified curve Immediately that point becomes the left end of the curve Then similarly click the right mouse button on the curve at the time you wish to be the right most portion of the magnified curve and it immediately becomes the end point on the right side And finally to return to the zoomed out fit to window view left double click on the curve 2014 Jackson Labs Technologies Inc RCM Reference User Manual 41 RCM Reference User Manual J a ck S on Labs 42 Remember in order to see all the data in the log file you must either set the span control to zero or right double click in the graph When you 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 use Shift Right click Double left click to release everything The time span indication at the lower right of the graph will turn red to signify that mouse override is in effect Figure 5 5 Graph display GPSCon Utility Pro GPSCon COM8 Gras Re Map Graph Export Help EEE SS Jackson Labs
35. ernal 1OMHz and 1PPS reference inputs on a 2 0 x 4 0 x 1 0 inch PCB board The RCM Reference board can be locked to either an external 1OMHz signal or an external 1PPS signal and has auto switching capability from 10MHz lock to 1PPS lock as a fall back in case the external 10MHz reference is removed or fails The unit will lock to within better than 500ps to the external 1OMHz reference typicallly with a lt 1 5Hz loop bandwidth or to within 10ns to the external IPPS reference rms 1 sigma after 24 hours of locking when in 1PPS locking mode In the absence of either external reference the RCM Reference board will have a drift stability of better than 0 5ppb per day long term The use of a 10MHz double oven OCXO and a single oven 100MHz OCXO that is phase locked to the 1OMHz OCXO provides better close in phase noise performance lower g sensitivity much lower thermal sensitivity and significantly improved holdover stability than the 100MHz OCXO can provide by itself The RCM reference achieves a phase noise performance of 100dBc Hz at 10Hz offset and 130dBc Hz at 100Hz offsets from the 1OOMHz carrier and noise floors of 172dBc Hz at 1MHz offset typically The 10MHz CMOS output achieves 95dBc Hz at 1 Hz offset and 130dBc Hz at 10Hz offset typically when 1PPS locked An exceptional low g sensitivity of only 0 3ppb per g per axis allows operation in moving platforms and provides good vibration noise rejection Allan Deviations of 2E 012 at 1
36. ery outputs an identifying string The response will show the following information 2014 Jackson Labs Technologies Inc 13 RCM Reference User Manual Ja ck S on Labs lt company name gt lt model number gt lt serial number gt lt firmware revision gt 3 2 3 HELP This query returns a list of the commands available for the RCM Reference 3 3 GPS Subsystem The GPS subsystem is only partially supported on the RCM Reference since it does not have a GPS receiver It does however support NMEA time and date related commands with the aid of the user manually setting time and date once after power on The internal RTC will maintain time and date with the stability of the internal 10MHz OCXO and NMEA commands can be enabled to output time and date on the serial ports 3 3 1 NMEA Support No navigation information is available on the NMEA output but time and date can be maintained and transmitted on the relevant NMEA sentences once set by the user using the GPS INTT TIME and GPS INIT DATE commands The NMEA time and date outputs are synchronized to the rising edge of the incomming 1PPS reference Please note that without an initial IPPS reference input pulse the NMEA output strings will not be generated unless the option SYNC OUT RESET 1PPS ON command has been sent to enable the unit to generate asynchronous internal 1PPS pulses for the NMEA engine Once enabled RCM Reference will send out information on the TTL and USB serial tra
37. hase locked to 10MHz internal terminate with 50 Ohms OCXO Harmonics lt 50dBc Spurious lt 80dBc 15V DC max allowed 2 1 3 Notes on Signal Interfacing The external 1PPS input reference is gated to reduce the possibility of spurious pulses causing a delinquent phase shift of the 1PPS output signal when the 1PPS reference cable is disconnected for example Once a 1PPS phase alignment has been achieved after an initial 3 pulses are received the unit will gate disable the 1PPS input connector for about 1280ns less than exactly one second This prevents the problem of disconnecting of the 1PPS coax cable during the pulse high time of the external 1PPS pulse to generate spurious 1PPS pulses in the unit due to cable connector bounce Once the unit has gated the input for slightly less than 0 999 999 seconds external pulses are once again allowed to re synchronize the internal 1PPS counter The internal 1PPS counter is clocked by the 100MHz output multiplied by 2x so it internally runs at 200MHz with a 5ns cycle time This allows synchronization to the external 1PPS signal to within 2 5ns uncertainty and removes all errand pulses with more than 1280ns offset to the previous 1PPS input Do not terminate the 1OMHz CMOS and 1PPS CMOS signals with impedances less than 1K Ohms these signals are properly series terminated with 50 Ohms and can thus drive long 50 Ohms coax cables with no over under shoot or ringing 2014 Jack
38. in of 1 0 after the FALEngth period of seconds During this time the PLL loop gain is increased by the amount specified in the SERVo FASTlock parameter which will result in a faster initial phase lock to UTC after power on while giving the lowest possible noise floor best short term stability during normal operation This command has the following format SERVo FALEngth lt int gt 100 20000 3 9 3 SERVo COARSeDac This command sets the coarse DAC that controls the EFC The RCM Reference control loop automatically adjusts this setting The user should not have to change this value This command has the following format SERVo COARSeDac lt int gt 0 225 3 9 4 SERVo DACGain This command is used for factory setup 3 9 5 SERVo EFCScale Controls the Proportional part of the PID loop Typical values are 0 7 double oven OCXO to 6 0 simple single oven OCXO Larger values increase the loop control at the expense of increased noise while locked Setting this value too high can cause loop instabilities This command has the following format SERVo EFCScale lt float gt 0 0 500 0 24 2014 Jackson Labs Technologies Inc J a ck S on RCM Reference User Manual Labs 3 9 6 SERVo EFCDamping Set s the Low Pass filter effectiveness of the DAC Values from 2 0 to 50 are typically used Larger values result in less noise at the expense of phase delay This command has the following format SERVo EFCDamping lt float gt 0 0 4
39. ion If the Receiver is not in holdover the response quantifies the previous holdover The second number in the response identifies the holdover state A value of O indicates the Receiver is not in holdover a value of 1 indicates the Receiver is in holdover 3 5 2 SYNChronization HOLDover INITiate The SYNC HOLD INTT and SYNC HOLD REC INIT commands allow the user to manually enter and exit the holdover state even while external reference signals are still being properly received This command only affects the external 1PPS tracking mode and is inactive when in external 10MHz tracking mode This forced holdover allows the unit to effectively disable reference locking while still keeping track of the state of the 1PPS output in relation to the 1PPS signal as generated by the external reference When the unit is placed into forced holdover with this command the unit will indicate the time interval difference between the IPPS output and the external 1PPS or 10MHz reference signal by using the SYNC TINT command This allows the user to see the OCXO drift when not locked to the external reference for testing purposes All other frequency disciplining 2014 Jackson Labs Technologies Inc 17 RCM Reference User Manual J a ck S on Labs functions of the unit will behave as if the external reference was disconnected from the unit while in this forced holdover state 3 5 3 SYNChronization HOLDover RECovery INITiate This command will disable the f
40. mmand allows capture of the position and other information available in the GGA command as well as tracking the lock state and health of the unit s OCXO performance No position or velocity information is available as the RCM Reference board does not contain a GPS receiver 3 3 4 GPS GPRMC This command instructs the RCM Reference to send the NMEA standard string GPRMC every N seconds with N in the interval 0 255 The command is disabled until an external 1PPS reference is applied or the command SYNC OUT 1PPS RESET ON is selected No position or velocity information is available as the RCM Reference board does not contain a GPS receiver This command has the following format GPS GPRMC lt int gt 0 255 3 3 5 GPS GPZDA This command instructs the RCM Reference to send the NMEA standard string GPZDA every N seconds with N in the interval 0 255 The command is disabled until an external 1PPS reference is applied or the command SYNC OUT 1PPS RESET ON is selected No position or velocity information is available as the RCM Reference board does not contain a GPS receiver This command has the following format GPS GPZDA lt int gt 0 255 3 3 6 GPS INITial DATE lt yyyy mm dd gt In order to have the RCM Reference generate valid time and date outputs the user must manually set the date in the RTC using this command This command is compatible to the PPIME OUT ON command available on the JLT CSAC GPSDO boards and the unit
41. nicate SERial BAUD lt 9600 19200 38400 57600 115200 gt SYSTem STATus SYSTem FACToryReset ONCE 3 8 1 SYSTem COMMunicate 3 8 1 1 SYSTem COMMunicate SERial ECHO This command enables disables echo on TTL serial This command has the following format SYSTem COMMunicate SERial ECHO lt ON OFF gt 3 8 1 2 SYSTem COMMunicate SERial PROmpt This command enables disables the prompt scpi gt on the SCPI command lines The prompt must be enabled when used with the software GPSCon This command has the following format SYSTem COMMunicate SERial PROmpt lt ON OFF gt 3 8 1 3 SYSTem COMMunicate SERial BAUD This command sets the TTL serial speed The serial configuration is always 8 bit 1 stop bit no parity no HW flow control Upon Factory reset the speed is set at 115200 bauds This command has the following format SYSTem COMMunicate SERial BAUD lt 9600 19200 38400 57600 115200 gt 3 8 2 SYSTem STATus This query returns a full page of GPS status in ASCII format The output is compatible with GPSCon 22 2014 Jackson Labs Technologies Inc J a ck S on RCM Reference User Manual Labs 3 8 3 SYSTem FACToryReset ONCE This command applies the Factory Reset setting to the EEPROM All aging tempco and user parameters are overwritten with factory default values 3 9 SERVO Subsystem This subsystem regroups all the commands related to the adjustment of the servo loop SERVo COARSeDac lt int gt 0 22
42. nsmit pin automatically every N seconds All incoming serial commands are still recognized by RCM Reference since the serial interface transmit and receive lines are completely independent of one another Once set the following two commands will be stored in NV memory and generate output information even after power to the unit has been cycled 3 3 2 GPS GPGGA 14 This command instructs the RCM Reference to send the NMEA standard string GPGGA every N seconds with N in the interval 0 255 The command is disabled until an external 1PPS reference is applied or the command SYNC OUT 1PPS RESET ON is selected This command has the following format GPS GPGGA lt int gt 0 255 No position or velocity information is available as the RCM Reference board does not contain a GPS receiver 2014 Jackson Labs Technologies Inc J a ck S on RCM Reference User Manual Labs 3 3 3 GPS GGASTat This command instructs the RCM Reference to send a modified version of the NMEA standard string GPGGA every N seconds with N in the interval 0 255 The command is disabled until an external 1PPS reference is applied or the command SYNC OUT 1PPS RESET ON is selected This command has the following format GPS GGASTat lt int gt 0 255 This command replaces the regular NMEA GGA validity flag with a decimal number indicating the lock state of the unit Please see section SERVo TRACe for a detailed description of the lock state variable The co
43. oldover Mode This mode is identical to mode 3 and is automatically entered in case the unit stops receiving any external 1OMHz or 1PPS reference input signals The board includes an RS 232 serial control port for NMEA and SCPI communication a 32bit processor that runs a Real Time OS one CMOS 5V 10MHz output two 100MHz 20 5dBm outputs one 3 3V IPPS CMOS output phase synchronized to an optional 1PPS input signal a 10MHz external reference input and precision voltage references and DACs Figure 1 1 RCM 10MHz and 100MHz Reference 2 AO Oo i sa E cd a er L 1 2 General Safety Precautions The following general safety precautions must be observed during all phases of operation of this instrument Failure to comply with these precautions or with specific warnings elsewhere in this manual violates safety standards of design manufacture and intended use of the instrument Jackson Labs Technologies Inc assumes no liability for the customer s failure to comply with these requirements 1 2 1 Antenna Lightning Protector For units that use external GPS receivers as the 1PPS reference always use a UL approved and properly installed GPS Antenna Lightning protector on the coaxial GPS antenna feed to prevent damage injury and or death in case of a lightning strike 1 2 2 Grounding To avoid damaging the sensitive electronic components in the RCM Reference always make sure to discharge any built up electrostatic charge to a good g
44. onstant Jackson Labs Technologies Inc typically uses values between 10 to 50 Setting this value too high may cause loop instability Phase compensation this is the Integral part of the PID loop This corrects phase offsets between the RCM Reference 1PPS signal and the UTC 1PPS signal as generated by the external 1PPS reference Set higher values for tighter phase following at the expense of frequency stability Typical values range from 4 30 25 being the default Setting this value too high may cause loop instability A well compensated unit will show performance similar to the plot shown in Figure 2 3 when experiencing small perturbations Figure 2 3 RCM Reference phase compensation plot 7 GPSCon Utility Pro GPSCon COM2 HORS ioj x Jackson Labs Fury Firmware Rev 1 1 Life E TI max ns fio Fiter coeff 0 025 a A Span mins 1000 _Stop 8 21 EFC 2 409962 ad 0m sd 0 07 m 4 233 Current Hide D ae El z 33 PRN El s 51 212 41 3 15 47 22 232 45 85 155 29 2 4099 0 075127 Poa ied 28 0 ns Ti fav 1 03n sd 4 7 n X SS Se VIC 8 21 32 17 Oct 2007 LAT N 27 16 17 454 LON W 121 57 26 666 MASK 10 deg ANTENNA DELAY 0 ns HET 46 42 m GPS i E li ur Sie ORE DES RO e SAR GR EQ qu se Z eps Jelftest OK OCXO Voltage OK EFC Ok q po GPS Receiver Status Position Hold l d o GPSDO Status Locked TER lbh M un wei TH 5 9 ns o start 15 40 54 16 10 07 UTC 16 67 hrs Send se
45. orced holdover state see the SYNC HOLD INIT command The unit will resume normal external reference locking operation after this command has been sent 3 5 4 SYNChronization SOURce MODE SYNChronization SOURce MODE 10MHZ 1PPS AUTO The SOURce MODE command selects the synchronization source for the internal 10MHz ovenized oscillator The source is selected between an external 10MHZ reference input on connector J3 or an external 1PPS input on connector J2 Switching the source is either done manually with the 10MHz or 1PPS command options or automatically with the AUTO command option When AUTO mode is enabled the unit only switches to the 1PPS input when the external 1OMHz input is not present The unit will go into holdover 10MHz DOCXO flywheel mode when no external reference is applied 3 5 5 SYNChronization PLL 10MHZ NARrow MEDium WIDe The PLL 10MHZ command configures the PLL bandwidth The three bandwidth options are Narrow default Medium and Wide Changing the PLL bandwidth can have a significant impact on the close in phase noise of the 1OOMHz output The default option is Narrow which will result in a 10MHz PLL loop bandwidth of approx 1 5Hz locking to the external 10MHZ reference input 3 5 6 SYNChronization PLL 100MHZ NARrow MEDium WIDe The PLL 100MHZ command configures the PLL bandwidth of the loop that locks the 100MHz OCXO to the 1OMHz internal OCXO The three bandwidth options are Narrow default Medium and Wid
46. ory calibration data and the unit will not operate and will have to be returned to the factory Pressing the erase button on the ISP utility will thus void the warranty 30 2014 Jackson Labs Technologies Inc J a ck S onj RCM Reference User Manual Labs Figure 4 1 LPC2000 flash utility f LPC2000 Flash Utility File Buffer Help PHILIPS LPC2000 Flash Utility V2 2 3 r Flash Programming Erase Blank r Communication Filename Connected To Port CAARMiFury_GPSDO ApplicationimainFur Blank Check Entire Device come Upload to Flash pr Execute Code Use Baud Rate pload to Flas ea 7 Start Sector 38400 z Selected Sectors atter Upload Erase Compare Flash Manual Reset tm Ego x Time Out sec E r Device Use DTR ATS Device na Part ID for Reset and Boot Loader TAL Freq kHz f10000 Device ID Boot Loader ID Selection Please note that the Use Baud Rate setting needs to be set to 38400 Baud or less it will not work faster than 38400 Baud The DEVICE should show up as LPC2138 after pressing READ DEVICE ID Also please point the Filename to the directory where you have stored the latest firmware hex file that is to be downloaded D Start the download by pressing Upload to Flash button The following window should appear if the correct COM port has been chosen etc 2014 Jackson Labs Technologies Inc 31
47. ou have configured the communication parameters press the OK button to close the window 5 3 1 2 Auxiliary parameters After pressing the Options button you can select Auxiliary and set other options or measurements See Figure 5 3 for an example of an auxiliary measurement You will notice that the Aux 1 request string has been set to meas current lt CD gt and the Log Aux box is checked In the area below labeled Traces to be visible on the graph the box Aux 1 is checked and the label OCXO curr has been added 38 O 2014 Jackson Labs Technologies Inc J a ck S on abs RCM Reference User Manual Figure 5 2 Setting the communications parameters GPSCon Utility Pro GPSCon COM4 Fo E Status Time Map Graph Export Help Bout PRN EL AZ SS VdmLabs Firmware Rev 2 19 RTS CTS O 2014 Jackson Labs Technologies Inc 39 RCM Reference User Manual J a ck S ony Labs Figure 5 3 Auxiliary Parameters window Optonsdaiog TTS CE Paths amp settings FTP Email Coms Time services Audiary Aux coms Export graphics Remote control o rnb Y 2nd port eror request string SYST ERR lt CR gt Enable second serial port 2nd port OK prompt scpi lt SPC gt gt lt SPC gt Wildcard for any character type is 7 Wildcard for numeric character is Y Camiage retum is 2nd port error prompt E7 H gt lt SPC gt lt CR gt Linefeed is lt LF gt
48. p lt 0 4A Reverse Polarity protected steady state at 25C J1 Pin 7 1PPS CMOS Secondary 1PPS output 3 3V LVCMOS lt 1ns rise time 1PPS output signal rising edge 3 3V OUTPUT 2 50 Ohms series terminated aligned to external 1PPS reference output do not end terminate or driven by internal 10MHz OCXO signal with less than 1K Ohms phase when in holdover aligned to J2 1PPS external reference to within 2 5ns typically 20 48us pulse width 2014 Jackson Labs Technologies Inc RCM Reference User Manual Jackson ES J1 Pin 8 RS 232 TX RS 232 transmit pin RS 232 level output RS 232 transmit output from the RCM module Generates SCPI and NMEA output strings J1 Pin 10 RS 232 RX RS 232 receive pin RS 232 level input RS 232 receive input to the RCM module Accepts SCPI commands J1 Pin 14 RESET Reset input signal Pulled to 3 3V internally by Pulling this pin to ground through a 4 7K Ohms resistor pull to switch or open collector output will ground open collector pull to reset the RCM module internal assert system reset microprocessor J1 Pin 16 ISP In Circuit Programming Pulled to 3 3V internally by Pulling this pin to ground through a Enable pin 4 7K Ohms resistor pull to switch or open collector output during ground open collector pull power on or during reset will place during reset or during power up the internal microprocessor into In to switch the microprocessor
49. round source such as power supply ground This should be done before handling the circuit board or anything connected to it 2 O 2014 Jackson Labs Technologies Inc J a ck S on RCM Reference User Manual Labs 1 2 3 Power Connections Make sure to connect the DC power to the device following the polarity indicated in Section 2 1 The power pins are diode protected and will not be damaged if the 12V power input wires are reversed 1 2 4 Environmental Conditions This instrument is intended for indoor use It is designed to operate at a maximum relative non condensing humidity of 95 and at altitudes of up to 50 000 meters Refer to the specifications tables for the ac mains voltage requirements and ambient operating temperature range 2014 Jackson Labs Technologies Inc 3 RCM Reference User Manual J a C k S onj Labs 4 2014 Jackson Labs Technologies Inc J a ck S on RCM Reference User Manual Labs Quick Start Instructions 2 1 Powering Up the Unit To operate the unit simply follow these two steps 1 If an external 10MHz reference source is to be used then connect a 10MHZ Sine Wave reference signal to connector J3 10MHz REF IN The signal can range from 7dBm to 15dBm Or alternatively connect a 3 3V or 5V 1PPS signal with 50ms max duty cycle to connector J2 1PPS IN Please note the 1PPS input is DC terminated with a 50 Ohms resistor to ground 2 Connect 12V 1V DC Power to J1 pins 3 and 4 on the unit
50. rtar 05 29 48 17 10 07 UTC Receiver timeout tar T LogStatus M Log sat count M Translate time codes 179 710 895 1737 6 0 167729 3213 68 0 176266 M Log EFC 2409962 Options inis V Tito GPS 44E 03 0 076677 T Log PU fi 7 Client mode Tl Continuously read error queue T Flash LED Update now ar ai OS 12 O 2014 Jackson Labs Technologies Inc J a ck S on RCM Reference User Manual Labs SCPI Control Quick Start Instructions 3 1 Introduction The SCPI Standard Commands for Programmable Instrumentation subsystem is accessed via the TTL or USB serial interfaces and a terminal program By default the terminal settings are 115200 8N 1 no flow control There are a number of commands that can be used as listed below Most of these are identical or similar to Symmetricom 58503A commands To get a listing of the available commands send the HELP query This will return a list of all the available commands for the RCM Reference Additional 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 SCPI command definitions A basic familiarity with the SCPI protocol is recommended when reading this chapter 3 2 General SCPI Commands 3 2 1 Quick Start Commands For a quick start try the following SCPI serial port commands help sync meas diag IDN 3 2 2 IDN This qu
51. s and 2E 012 over 3 hours are possible when locked to noisy external 1PPS references such as GPS receivers The unit also provides 1PPS outputs and inputs and can be phase synchronized with less than Ins unit to unit uncertainty typically The RCM Reference operates from a single 12V supply consumes less than 0 39A steady state current and operates from 45C to 85C The RCM Reference allows four operating modes 1 10MHz Synchronized In this mode the unit phase locks to an external 1OMHz Sine Wave or CMOS reference with a sub 1 5Hz loop bandwidth The unit thus can operate as a phase noise filter while still providing the Allan Deviation ADEV performance of the reference source 2 1PPS Synchronized In this mode the unit uses a field proven loop algorithm to lock to an external noisy 1PPS reference such as GPS receivers can provide Loop Time Constants of 10 s of seconds to 1000 s of seconds can be selected to filter out 1PPS noise such as GPS sawtooth noise 2014 Jackson Labs Technologies Inc 1 RCM Reference User Manual J a ck S on Labs Please note that the unit can automatically switch to 1PPS sync mode if the external 10MHz reference fails or is disconnected 3 Free Running operation No external references are attached or required This stand alone mode allows operation with crystal aging compensation via software loop and drift of down to 0 1ppb over the first day and a maximum drift of 0 5ppb long term 4 H
52. s achieved The 10MHz LOCK LED D13 and the 10MHz Input Sense LED D18 will not light up in the absence of an external 10MHz reference signal Connect a terminal program TeraTerm is recommended to the unit via the RS 232 serial connector pins 8 and 10 on connector J1 with 115 2KB 8N1 settings and no flow control Try some of these SCPI commands help syst stat diag sync meas 2 1 1 PCB Photos The RCM Reference PCB is shown in Figure 2 1 Figure 2 1 RCM Reference 10MHz 100MHz PCB o Power RS 232 oars 6 A no evenr Leo Em RME A 1PPS INPUT Ne S R 1OMHz PLL LOCK LED 1PPS OUTPUT E a PN me RSRS 100MiHz OUT fi F 100MHz OUT 4 4 g 10MHz REF IN ol ET JR a 100MHz PLL LOCK LED 10MHz CMOS OUT 2 1 2 Mechanical Drawings The following drawings show the mechanical dimensions and the pinout of the RCM Reference PCB 6 2014 Jackson Labs Technologies Inc RCM Reference User Manual Jackson ES Figure 2 2 RCM Reference Mechanical Dimensions Oo O O O o o co O o e 00 00 Wo H N mM 1 800 1 66 5 N 0000000900900099 O ds TAS 090000000
53. son Labs Technologies Inc RCM Reference User Manual Ja ck S on Labs The unit will immediatly try to lock to an external 10MHz reference input if such a signal is applied after power on It will be able to achieve lock to the external 1OMHz signal within typically 4 minutes after power on at 25C and if the 1OMHz signal is within 4 Hz or better of absolute 10MHz In the absence of an external 10MHZ reference signal the unit will wait 7 minutes after power on then locking to the external 1PPS reference signal will begin if an external 1PPS input signal is present The unit will require 12 to 15 minutes typically to achieve lock to within 0 2ppb frequency accuracy The external 1PPS signal is also used to synchronize the IPPS output and if the 1PPS external reference is removed the unit will produce a 1PPS output signal generated by the 100MHz output signal divided by exactly 100 000 000 and for a length of 20 48us and will remain phase aligned to the external 1PPS reference within the drift of the internal 1OMHz DOCXO In the absence of both a 1OMHz and 1PPS external reference inputs the unit will go into high stability holdover mode during which the internal 1OMHz DOCXO is compensated by a software aging compensation algorithm The unit will continue to produce very stable 10MHZ 100MHz and 1PPS output signals with typically less than 0 5ppb long term drift per day In the absence of any 1 PPS external reference pulses the unit will randomly
54. state 0 OFF 1 ON of the PLL controlling the internal 10MHz oscillator 3 5 12 SYNChronization OUTput 1PPS RESET ON OFF This command allows the generation of the NMEA output sentences upon power on without an external 1PPS reference being connected to the unit By default the unit does not generate an internal 1PPS pulse that triggers the NMEA output until the unit has received an external 1PPS pulse With the command SYNC OUT 1PPS RESET ON the unit can now be configured to generate an asynchronous NMEA output after power on even if an external 1PPS input is not connected to the unit Once the external 1PPS signal is applied the NMEA output sentences will align themselves to the external 1PPS The default setting is OFF which means the NMEA output sentences are not generated until an external 1PPS signal has been applied to the unit The CMOS 1PPS output pulse of the RCM Reference is generated by a PLD and not under software control This 1PPS output pulse will be asynchronous after power on until at least three external 1PPS pulses have been received At that time the 1PPS CMOS output will be phase synchronized to the external 1PPS reference input to within 2 5ns typically Both the NMEA and the CMOS 1PPS outputs will continue to be generated even if the external 1PPS reference is being removed The accuracy will then follow the internal 10MHz OCXO accuracy 3 5 13 SYNChronization health The SYNChronization health query returns a hexadecim
55. to Customer If Jackson Labs Technologies Inc is unable within a reasonable time to repair or replace any product to condition as warranted the Customer shall be entitled to a refund of the purchase price upon return of the product to Jackson Labs Technologies Inc 6 1 2 Limitation of Warranty The foregoing warranty shall not apply to defects resulting from improper or inadequate maintenance by the Customer Customer supplied software or interfacing unauthorized modification or misuse opening of the instruments enclosure or removal of the instruments panels operation outside of the environmental or electrical specifications for the product or improper site preparation and maintenance JACKSON LABS TECHNOLOGIES INC SPECIFICALLY DISCLAIMS THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 2014 Jackson Labs Technologies Inc 45 RCM Reference User Manual Ja ck S on Labs PURPOSE No license express or implied by estoppel or otherwise to any intellectual property rights is granted by this document Jackson 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 EXCLUSIVE REMEDIES JACKSON LABS TECHNOLOGIES INC SHALL NOT BE LIABLE FOR ANY DIRECT INDIRECT SPECIAL INCIDENTAL OR CONSEQUENTIAL DAMAGES WHETHER BASED ON CONTRACT TORT OR ANY OTHER LEGAL THEORY 46
56. ttp www flashmagictool com If the Philips LPC2000 tool doesn t work please use this one 4 3 Putting the PCB into In Circuit Programming ISP mode Momentarily short out the ISP pin 16 of connector J1 to pin 18 GROUND of connector J1 of the RCM Reference board to ground the ISP pin during power on It may be useful to connect a push button to pin 16 and pin 18 of J1 to allow in field firmware upgrades on the RCM Reference PCB Both LED s should remain off indicating the unit is properly placed into ISP mode If the LED s light up after power on the unit is not in ISP mode 4 4 Downloading the firmware Download the latest version of RCM Reference firmware from the Jackson Labs Technologies Inc support website and store it in a place that will be remembered The file is in hex format The unit needs to be connected to the computer s RS 232 serial port prior to firmware download The RCM Reference is RS 232 level compatible 4 4 1 Philips LPC2000 Flash Utility A Open the LPC2000 utility 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 ID button this should then show LPC2138 in the DEVICE window if the unit is communicating correctly to the application Warning Make sure NOT to press the erase button under any circumstances this may erase fact
57. y With some practice the entire Flash upgrade can be done in less than five minutes even though the following seems like a fairly long list of instructions 4 2 ISP Flash Loader Utility installation There are two Flash loader utilities available to upgrade the RCM Reference firmware You can download the Philips LPC2000 utility from the Jackson Labs Technologies Inc website under the Support tab http www jackson labs com index php support 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 utility version 2 2 3 Please note that some computers are known to be incompatible with the LPC2000 flash utility Preliminary investigations show Windows Media Center and or Centrino vPro processor systems to create download difficulties Please use a different computer if you experience problems such as the download breaking up in the middle of the transfer Or alternatively you may use the Flash Magic programming tool Please ensure that you have at least version 2 2 3 of the LPC2100 flash utility installed Earlier versions may not recognize the LPC2138 processor used on the RCM Reference boards 2014 Jackson Labs Technologies Inc 29 RCM Reference User Manual J a ck S on Labs 4 2 2 Flash Magic Flash Programming Utility The second utility is the Flash Magic tool available on the Flash Magic website h
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