10MHZ SINE WAVE GPS DISCiPLINED CLOCK GPSDO with LCD Display Frequency #

Description: New 10MHZ SINE WAVE GPS DISCiPLINED CLOCK GPSDO with LCD Display Frequency GPSDO GPS Colck 10M with LCD Display Frequency Message Disciplined Oscillator Key Feature:- Output 10MHz accuracy sine wave or square wave,low noise- Output 1pps second pulse,sync with UTC time,can keep time.- High sensitive GPS receive,small sky can lock。- With lock inductor,red led off,equipment lock.- Power is 12V/1.5A,simple easy,can used switch power- Unexpensive,small valume,used convenient- The unique removal of GPS signal jitter algorithm,higher accuracy- LCD display GPS strength,time,output frequencyOverview: GPSDO name GPS disciplined oscillator,used GPS output accuracy time signal to control clock equipment.This equipment used GPS output 1 pps,control on board OCXO,used special algorithm to filter the GPS time jitter.make the OCXO output accuracy clock. always amend.board with LCD display gps strength,time and frequency deviation.Parameter:- NAME:LCD-GPS DISCIPLINED OSCILLATOR- POWER:DC11.7-12.9V<=15W- GPS ANT POWER:DC3.3V/50mA- 1PPS OUTPUT:SQUARE WAVE,3.3Vpp- 10M OUTPUT :SINE WAVE,1Vrms (10-15dBm),square wave,3.3/4.7Vpp- RS232 OUTPUT:GPS NMEA SIGNAL- ACCURACY: above than OCXO 2 order of magnitude- SIZE:W*H*D=107*55*172mm(INCLUDE BNC CONNECT)1.Work state ledALM : warning,on,output frequency accuracy is low.GPS LOCK:GPS lock inductor,while GPS lock,led on.RUN: run indicator led,led flash,equipment is normal,If not flash,fault in equipment.2.DB9 connect,output NMEA GPS flow.output 1PPS signal,RS232 level.3.One pulse per second,BNC connected.from GPS module.rising edge is valid,4.10MHz output,BNC connected,output sine wave or square wave.5.Connect active GPS antenna,SMA connected.6.External power connect,used 5.5mm/2.1mm DC plus.inside is positive,outside is negative,11.7-12.9V max 15W6.Accessory is 5m active GPS antenna,DC12V/1.5A adapter.connect GPS antenna,connect DC12V power supply.can output 10MHz standard frequency.ATTENTION: must be used 5.5/2.1 DC plus,if used 5.5/2.5 will poor contact.Front is a LCD,display machine state.4.3 Connect PCGPSDO-DB9 PC-DB9PIN2--------------------PIN2PIN3--------------------PIN3PIN5--------------------PIN5PIN8--------------------PIN8GPSDO-DB9 PIN2,PIN5,PIN8 is connect to PC-DB9 PIN2,PIN5,PIN8,Baud rate is 9600BPS,Baud rate is fixed.4.4 Rear panel work state:Power up : three led all on,all off,then RUN flash,GPS LOCK led off,WARN led on.Power up current: less than 1.5 A.Preheat: on board there is a OCXO,OCXO preheat need 30 minute.After a period of time,the current will slowly become small.Until GPS LOCK led on,WARN led off,means the equipment is normalNormal: RUN led flash,GPS LOCK led on.WARN led off,means GPSDO running normal.When WARN led off,the accuracy is less than 0.05Hz@10MHz,keep GPS lock for 5 hours,the accuracy is less than 0.005Hz@10MHz.4.5 Front panel LCD state:Used 1602 LCD, display area there is two line,every line there is 16 character.GPS signal strength display,First line 1,2 character,display GPS signal strength,first character is antenna mark,all display,second character is GPS signal strength,there is 6 step.from strength weak to strong is empty,1dot,2dots,2+3dots,2+3+4dots,2+3+4+5dots.Character display area,6character,can via command to setting.time display area, 8 characters,can via command settingDisciplined state display,1 character,when system is accuary,display L,else not display.Referenec output frequency display area,15 character.Power up,LCD dots all on,then all off,check lcd is good or bad.then displayGPSDO UTC +/- XX:XX display UTC offsetBG7TBL V20171210 display author and versioncomplete,enter normal display modeIf GPS not fix,LCD bottom will display GPS NO FIX4.6 Display mode setting commandSetting display frequency mode,6 character,UTC offset,need short inside PCB jump.Baud rate is 9600BPS,data bit 8,stop bit 1,Check bit NONE,flow control NONE.Command is star with $GPGTC,end with T*,middle is 12 byte command. $GPGTC,X1 X2 X3 X4 X5 X6 X7 X8 X9 X10 X11 X12 T*X1,setting display frequency mode,10000000.0000Hz,1,10M +/-0.0000Hz,2,10M +/-000.00ppb 3,10M +/-0.00000ppmX2 X3 X4 X5 X6 X7 display 6 character.X8 time offset,+/-X9 X10 hour offset,max 23X11 X12 minute offset,max 59Example 1:display BJT,UTC+8,ppb,command is $GPGTC,2 BJT +0800T*Example 2:display GMT UTC+0,display 10000000.0000Hz,command is $GPGTC,0, GMT +0000T*Example 3,display EST-5,PPM,command is $GPGTC,3 EST +05:00T*Command is OK,machine return OK.connect db9,connect jumper.com port setting,input command4.7 Use notes:LCD display frequency is reference only,there is deviation with actual output.Gpsdo long time on line,the surface of the machine is warn, This kind of phenomenon is normal.GPS antenna avoid interference,avoid high voltage,avoid lighting.put antenna to open sky.one line sky can lock,but the accuracy and jitter is worse.Signal flow:1575M signal come from GPS antenna,input the GPS module,GPS output 1PPS and NMEA GPS lock signal.Used 1PPS for gate via CPLD and MCU output EFC signal,correct the OCXO output frequency.FAQ:1.Q : how can I know the machine is good. A : power on times,red led off,machine is good.2. Q : how can I know MCU is good. A : when power on,all LED will on,then RUN led flash,red LED on,means MCU is good.3. Q:5m GPS active antenna is short,how to do.can not connect GPS antenna? A : Used GPS extended line,such as 5m,10m,15m,20m extended line.can not used GPS antenna,it is a OCXO.4. Q: i used frequency counter test frequency is difference with LCD display frequency,what can i do? A:LCD display frequency is reference only,actual test there is deviation.when LCD display L10000000.000xHz or other L frequency,frequency is accuary.Make sure test frequency standard is less than 0.001Hz accuary else is the frequency standard deviation. Q: GPS strength is change some time is high some time is low A:that is right,Because the signal intensity is affected by the satellite position,the weather and the Algorithm.Package List:- 1 x GPS disciplined clock- 1 x AC110-220-DC12V ADAPTER- 1 x 3 m GPS ANT we have a duty free number for most countries for ham radio items. There would be no custom duty tax, but, you will be responsible for the VAT tax, that is based on the value of the package. All you pay me is for the item and shipping.- Import duties, taxes, and charges are NOT INCLUDED in the item price or shipping charges. These charges are the buyers responsibility. - Please check with your countrys customs office to determine what these additional costs will be prior to bidding / buying. - These charges are normally collected by the delivering freight (shipping) company or when you pick the item up , do not confuse them for additional shipping charges Do not leave nagative feedback before we provided service for you,thanks.INFORMATION: Our shipping and warranty policies are based on manufacturers policies. We usually ship with in 3 business day after payment is received, usually on the day of payment. If you purchase more than one item at a time from my Ebay store, please contact me for combined shipping. This item may require a signature on delivery.

Price: 187.99 USD

Location: HeFeiShi

End Time: 2024-04-20T13:04:38.000Z

Shipping Cost: 0 USD