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Index

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1 pps / 10 MHz Check . . . . . . . . . . . . . 5-3

1 pps Offset . . . . . . . . . . . . . . . . . . . . . 3-5

2.048/1.544 MHz Check . . . . . . . . . . . 5-3

A

Alarm Menu . . . . . . . . . . . . . . . . . . . . 3-6

Alarm Output Check . . . . . . . . . . . . . . 5-6

Alarm Outputs . . . . . . . . . . . . . . . 3-6, 7-4

Antenna (Option 01) . . . . . . . . . . . . . . 7-6

Antenna Cable (Option 02) . . . . . . . . . 7-6

Antenna Delay . . . . . . . . . . . . . . . . . . 3-5

Antenna Installation . . . . . . . . . . . 2-7, 8-2

Available Options . . . . . . . . . . . . . . . 8-2
Case Classification . . . . . . . . . . . . . 8-4
Deviations . . . . . . . . . . . . . . . . . . . . 8-3
Interference . . . . . . . . . . . . . . . . . . . 8-3
Location . . . . . . . . . . . . . . . . . . . . . . 8-2
Protection against Lightning Strikes . 8-4
Standard Configuration . . . . . . . . . . 8-3

Appendix. . . . . . . . . . . . . . . . . . . . . . . 8-1

Attenuators . . . . . . . . . . . . . . . . . . . . . 8-7

Auxiliary Components . . . . . . . . . . . . . 8-7

B

Basic Controls . . . . . . . . . . . . . . . . . . 3-2

Battery Replacement . . . . . . . . . . . . . 6-3

C

Calibration . . . . . . . . . . . . . . . . . . . . . 6-2

Cesium Standards . . . . . . . . . . . . . . . 1-2

Check List. . . . . . . . . . . . . . . . . . . . . . 2-3

Coaxial Adapters . . . . . . . . . . . . . . . . 8-7

Coaxial Cables . . . . . . . . . . . . . . . . . . 8-7

Connecting to a PC . . . . . . . . . . . . . . . 2-7

Controls . . . . . . . . . . . . . . . . . . . . . . . 7-6

D

Default Menu . . . . . . . . . . . . . . . . . . . 3-4

Default Mode . . . . . . . . . . . . . . . . . . . 1-3

Dimensions and Weight. . . . . . . . . . . . 7-7

Display Contrast . . . . . . . . . . . . . . . . . 3-7

E

Environmental Conditions . . . . . . . . . . 8-5

Environmental Data . . . . . . . . . . . . . . 7-7

External DC Supply (-48 V) . . . . . . . . . 7-5

F

Fan . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-7

Fan Control. . . . . . . . . . . . . . . . . . . . . 2-5

Fan Replacement . . . . . . . . . . . . . . . . 6-3

9-2

Index

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Содержание GPS-12

Страница 1: ...GPS 12 GPS 12R GPS 12R HS GPS 12RG GPS GLONASS GPS Frequency Standards User s Manual...

Страница 2: ...II 4031 600 12001 Rev 05 May 2017 2017 Pendulum Instruments Altaria Services...

Страница 3: ...aterial 2 8 3 Using the Controls Front Panel 3 2 Rear Panel 3 3 Functional Description 3 4 User Interface 3 4 4 GPS 12 Monitor What is GPS 12 Monitor 4 2 Requirements 4 2 Versions 4 2 Installation 4 2...

Страница 4: ...PS 12R Figures illustrating the menu screens are generic Where necessary clarifying remarks or additional figures have been included GNSS stands for Global Navigational Satellite System and is an acro...

Страница 5: ...Chapter 1 Preface...

Страница 6: ...I O Boards The GPS 12X comes as standard with two 2 048 1 544 MHz square wave outputs and one 1 pps pulse output with approx 10 s duration The GPS 12RG has also 3 x 10 MHz and 1 x 5 MHz outputs See Op...

Страница 7: ...sible to maintain stability during transportation as the internal reference oscillator is continuously powered Field use without access to AC line power is also practicable Option 78 HS has the additi...

Страница 8: ...This page is intentionally left blank 1 4 Preface...

Страница 9: ...Chapter 2 Preparation for Use...

Страница 10: ...instrument it is essential that you follow gener ally accepted safety procedures in addition to the safety precautions specified in this manual The warranty commitments are rendered void if unauthori...

Страница 11: ...nal DC power source Other options you ordered e g antenna option 01 antenna cable option 02 rack mount kit option 22 or carrying case option 27 27H are shipped in sepa rate boxes Certificate of Calibr...

Страница 12: ...Before con necting any unit to the power line you must make sure that the protective ground functions correctly Only then can a unit be connected to the power line and only by using a three wire line...

Страница 13: ...For bench top use a fold down support is available for use underneath the frequency standard This support can also be used as a handle to carry the instrument Rackmount Adapter If you have ordered a...

Страница 14: ...or a pair of pliers to remove the springs holding each foot then push out the feet Push the instrument back into the cover See Figure 2 4 Mount the two rear feet with the screws B to the rear panel P...

Страница 15: ...ion details and instructions on connecting other antennas cables than those supplied by Pendulum please consult the Appendix in this manual Connecting to a PC A PC can be connected to the USB port at...

Страница 16: ...78 HS contain a re chargeable NiMH battery pack that serves the purpose of providing uninterruptible power to the instrument As all batteries it has a finite lifetime Although NiMH based cells are by...

Страница 17: ...Chapter 3 Using the Controls...

Страница 18: ...bove the key in standby mode The CURSOR keys with arrow symbols are used for moving the cursor marked by text inversion around the menus on the display By pressing the ENTER key you either confirm a c...

Страница 19: ...puts Option 70B sine wave 3 x 10 MHz 1 x 5 MHz Option 71B sine wave 1 x 10 MHz 1 x 5 MHz 1 x 1 MHz 1 x 0 1 MHz Option 72B square wave 2 x 2 048 MHz 2 x 2 048 Mbps Option 73B square wave 4 x 13 MHz Opt...

Страница 20: ...ult mode Hold over mode is automatically entered when the disciplining fails for some reason e g loss of satellite contact Hold over mode can also be forced via the User Interface UI When the satellit...

Страница 21: ...een Press t n 1 pps Offset GPS12R HS GPS 12RG Here you can set the time offset of the 1 pps output signal that is available on the front panel The range is 999 ns GNSS Menu Moving the cursor to GNSS i...

Страница 22: ...uations are available via a D sub connector on the rear panel The normally closed NC contacts will open when the respective alarm criteria are met Figure 3 2 shows the pin configuration Power Source M...

Страница 23: ...Espa ol Turkish T rk e Russian CJFF846 There is also a module available containing Chinese and Japanese English can always be chosen irrespective of the active language module n Display Contrast The...

Страница 24: ...This page is intentionally left blank 3 8 User Interface Using the Controls...

Страница 25: ...Chapter 4 GPS 12 Monitor...

Страница 26: ...If you want to be able to control the GPS 12X remotely you have to buy a license key that opens up all the features of the monitor pro gram You don t have to download and install another version of th...

Страница 27: ...orms e g GPS GNSS options require that you press the Edit button on the toolbar to enter Edit mode Press Edit again to return and OK to confirm the new values Taking Snapshots of the Device Screen If...

Страница 28: ...This page is intentionally left blank 4 4 Main Features GPS 12 Monitor...

Страница 29: ...Chapter 5 Performance Check...

Страница 30: ...ure described in Chapter 5 Preventive Mainte nance Preparations Connect the antenna including cable to the an tenna input rear Make sure the antenna posi tion is satisfactory Power On Test Connect the...

Страница 31: ...at the low level is 1 2 V 10 and the high level 1 2 V 10 Connect the counter and verify that the frequency is 2 048 1 544 MHz 0 002 Hz 1 pps 10 MHz The default value is 1 pps but can be changed to 10...

Страница 32: ...period time mul tiplied by four i e 4 x 488 1952 2 ns Standard Deviation s 1 ns Option 73B 4 x 13 MHz Connect a DSO with 50 W inputs to all BNC connectors one at a time Verify that the signal is a squ...

Страница 33: ...it was completely discharged from the be ginning Disconnect the power cord and switch on the instrument Check that the instrument behaves nor mally and is operative for about 90 min utes n Option 78...

Страница 34: ...andby Mode Measure the resistance between pin 8 and pin 9 on the D SUB alarm connector Expected result open circuit near infin ity Measure the resistance between pin 1 and pin 6 on the D SUB alarm con...

Страница 35: ...Chapter 6 Preventive Maintenance...

Страница 36: ...ce capable of generating both 2 048 MHz and alternatively 1 5 or 10 MHz at an amplitude between 0 1 and 5 Vrms in 50 W It should also have a traceable cali bration history The Pendulum GPS 89 with Opt...

Страница 37: ...ulate the absolute difference between the two results DTIE Calculate Df DTIE 86400 Acceptance criterion Df calculated according to the expression above should be less than 5 x 10 12 Fan Replacement If...

Страница 38: ...This page is intentionally left blank 6 4 Battery Replacement Preventive Maintenance...

Страница 39: ...Chapter 7 Specifications...

Страница 40: ...0 12 1 10 12 t 100 s 2 10 11 5 10 12 3 10 12 t 10 s 2 10 11 1 10 11 1 10 11 t 1 s 2 10 11 2 10 11 2 10 11 Phase noise dBc Hz offset 1 Hz 90 75 85 10 Hz 120 95 125 100 Hz 130 125 135 1 kHz 140 140 145...

Страница 41: ...g which the oscillator has been operat ing continuously Note 4 After 72 h of continuous operation Note 5 Locked to GNSS Note 6 Position Hold 7 3 Stability Specifications OCXO Standard Rb HS Rb 2 Aging...

Страница 42: ...Max switching current 9 p male D Sub 1 loop for urgent alarm 1 loop for non urgent alarm relay open alarm mode relay closed normal mode 60 VDC 200 mA Options Option 70B Outputs Connector type Frequen...

Страница 43: ...l DC Supply Connector type NiMH 16 8 V 2 3 Ah Bat loaded to 100 2 h1 or 3 h2 2 5 h3 or 5 h4 When 5 10 min left 3 h to 80 of capacity 11 3 18 V 5 2 1 A Inlet protected against overvoltage and wrong po...

Страница 44: ...key is OFF GNSS Receiver Trimble IRZ Resolution T GPS 12 R MNP M3 GPS 12RG Antenna connector Power out Channels Trimble IRZ Carrier code Type N female 5 V 0 1 A on center conductor for feeding active...

Страница 45: ...Altitude Vibration Shock Safety EMI 0 C 50 C operating 40 C 70 C storage 95 RH 0 C 30 C operating storage 4600 m operating 12000 m storage 3G 55 Hz per MIL T 28800D Class 3 Style D Half sine 40G per...

Страница 46: ...13 MHz outputs 2 x 1 544 MHz 2 x 1 544 Mbps outputs 48 V external DC supply Internal battery backup Internal battery backup w ex ternal DC connector for charg ing and continuous operation 1 x 1 pps d...

Страница 47: ...oft carrying case Heavy duty hard transport case GPS 12 Monitor Control Monitoring SW GPS only antenna GLONASS GPS antenna Antenna mounting kit Antenna cable 20 m Antenna cable 50 m Antenna cable 130...

Страница 48: ...This page is intentionally left blank 7 10 Ordering Information Specifications...

Страница 49: ...Chapter 8 Appendix...

Страница 50: ...other General Guidelines to Good Antenna Location The general rule that applies to all installations working in or near the microwave frequency bands is that it should be possible to see the transmit...

Страница 51: ...t the same frequency the problem has still been observed from time to time and must not be neglected Standard Configuration The majority of installations can do with the standard configuration consist...

Страница 52: ...m but not 245 m Use a line amplifier with a nominal gain of 20 dB plus low loss coaxial cable of type LMR 400 or equivalent The ampli fier must accept a fixed 5 V supply volt age fed through the centr...

Страница 53: ...ll be 55 m instead This is the upper limit for the standard RG 213 ca ble under normal climatic conditions Calculation of total gain at the receiver input using a RG 213 cable with an attenuation of 0...

Страница 54: ...compulsory Example 4 Requirements Cable length Lightning arrester Climatic conditions 325 m 120 m in doors yes snow and ice Solution This is a typical two amplifier configuration A worst case calcula...

Страница 55: ...mplifiers may be more suitable for example when very long cable lengths are nec essary Maximum two amplifiers can be inserted in the signal path before the loss seen from the an tenna exceeds 6 dB The...

Страница 56: ...uently it is recommended to keep these components as replacement parts if minimum downtime is important n Mounting Masts Used for securing the antenna unit At the same time the coaxial connectors are...

Страница 57: ...Chapter 9 Index...

Страница 58: ...2 Protection against Lightning Strikes 8 4 Standard Configuration 8 3 Appendix 8 1 Attenuators 8 7 Auxiliary Components 8 7 B Basic Controls 3 2 Battery Replacement 6 3 C Calibration 6 2 Cesium Standa...

Страница 59: ...ting Masts 8 8 Multi path Reception 8 3 N National Standards 1 3 O Option 01 Antenna 7 6 Option 02 Antenna Cable 7 6 Option 70B 3x10 MHz 1x5 MHz spec 7 4 Check 5 3 Option 71B 10 5 1 0 1 MHz spec 7 4 C...

Страница 60: ...dapter 2 5 Rear Panel 3 3 Rear Panel Outputs 5 3 Recommended Test Equipment 5 2 Reference Outputs Disciplining Input 7 6 S Safety Instructions 2 2 Specifications 7 1 Stability spec 1 pps Output 7 3 Fr...

Страница 61: ...Chapter 10 Service...

Страница 62: ...rt and service please contact Pendulum at the following addresses II Altaria Services Sp z o o ul Lotnicza 37 80 297 Banino Poland Office Address As above Shipping Address As above Phone Fax 48 58 681...

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