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External Interfaces and Grounding

As the base plate temperature continues to increase, the unit eventually loses lock. Above a base
plate temperature of +80° C, the resonator, or lamp heaters shut down as control point temperatures
are exceeded, and the unit temperature coefficients increase to approximately 6xE

-10

° C.

External Interfaces and Grounding

8200 Connectors

Figure 4-7: Connector Placement

Figure 4-8: Connector J1 ("D" Connector Plug 15 Pins, MIL-RF-24308)

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深圳市儒科电子有限公司

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Содержание 098-00071-000

Страница 1: ...8200 Rubidium Oscillator User s Guide 17 December 2009 Rev A Part Number 098 00071 000 深圳市儒科电子有限公司 ...

Страница 2: ...ricom World wide Sales http www symmetricom com Contact Sales online To reach a Symmetricom Customer Assistance Center call one of the following numbers n Worldwide Main Number 1 408 428 7907 n US Toll free Number 1 888 367 7966 1 888 FOR SYMM n Europe Middle East Africa 49 700 32886435 2 of 25 深圳市儒科电子有限公司 ...

Страница 3: ...ion outside of the prod uct s specifications by Buyer or third party or v the goods are shipped to any country other than that originally specified in the Buyer s purchase order Goods not meeting the foregoing warranty will be repaired or replaced at Symmetricom s option upon return to Symmetricom s factory freight prepaid provided however that Buyer has first obtained a return materials authoriza...

Страница 4: ...UYERS Contact Information Symmetricom Inc Timing Test Measurement 3750 Westwind Blvd Santa Rosa CA 95403 Main 1 707 528 1230 For Sales Technical Support and Return Materials Authorization please see Symmetricom Cus tomer Assistance see Symmetricom Customer Assistance on page 2 4 of 25 深圳市儒科电子有限公司 ...

Страница 5: ...entions 9 2 Product Description 10 The 8200 Line of Rubidium Oscillators 10 8200 Standard Oscillator 11 3 Specifications 12 Environmental Requirements 12 Dimensions 8200 13 Electrical Specifications 14 Electrical Specifications 8200 14 4 Design Integration Considerations 16 Mechanical Drawings 8200 16 Mechanical Considerations 17 Thermal Considerations 17 External Interfaces and Grounding 18 8200 ...

Страница 6: ...d Operation 20 Installation 20 8200 Start up Sequence 20 6 Symmetricom Serial Interface Protocol 22 Using the Symmetricom Serial Interface Protocol 22 Data Format 22 Adjust Frequency commands f and t 23 Factory Mode 23 Index 24 6 of 25 深圳市儒科电子有限公司 ...

Страница 7: ...Table of Contents This page intentionally left blank 7 of 25 深圳市儒科电子有限公司 ...

Страница 8: ...the following sections 2 Product Description on page 10 This section contains a description of the 8200 oscillator and lists its typical applications It provides information on dimensions performance and connector pin outs 3 Specifications on page 12 This section contains physical dimensions and both environmental and electrical specifications 4 Design Integration Considerations on page 16 This se...

Страница 9: ...rved may result in damage to or destruction of the equipment Cautions are also used to indicate a long term health hazard ESD Caution To avoid personal injury and electrostatic discharge ESD damage to equipment do not disregard ESD cautions ESD cautions are installation operation or maintenance procedures practices conditions or statements that if not strictly observed may result in possible perso...

Страница 10: ...rom the basic physics operation This lock signal indicates when the output frequency is locked to the atomic resonance of rubidium When more control over the device is desired an extensive command control status dialog is avail able In addition to controlling the operation of the oscillator the microprocessor s built in firmware allows an external host computer to communicate with the embedded con...

Страница 11: ...ontrolling the module The core component in this module is based on Sym metricom s X72 rubidium oscillator Since the X72 s inception several thousand units have been deployed in various applications The 8200 improves upon this robust design by using a ruggedized housing and an extensive qualification process to provide rubidium performance over diverse envi ronmental conditions 11 of 25 深圳市儒科 ...

Страница 12: ...Method 107 Test Condition A 10 cycles 55 C to 85º C Orientation sensitivity 5 0E 11 for any orientation Pressure sensitivity 1 0E 13 mbar Altitude n Operating Sea level to 40 000 12 192 m n Non operating Sea level to 80 000 24 384 m Magnetic field sensitivity dc 2Gauss 4 0E 11 Gauss Relative humidity operating 0 to 95 RH per MIL STD 810 Method 507 4 Salt fog MIL STD 810 Method 509 4 12 of 25 深圳市...

Страница 13: ...IL STD 202 Method 213 n Operating 30g 11msec half sine maintain lock n Non operating 50g 11msec half sine EMI n MIL STD 461 n Emissions CE102 RE102 n Susceptibility CS101 CS114 RS103 MTBF MIL HDBK 217F 90 000 hours Ground fixed 40ºC base plate On Off cycling endurance 5000 cycles at 10ºC base plate Input connector 1 DB 15 All input power monitoring Dimensions 8200 Height 0 95 Width 4 00 Depth 4 63...

Страница 14: ...mption operating 28Vdc 40 C base plate 16 W 25 C base plate 12 W 80 C base plate 8 W RF Output Amplitude 0 5 0 7 Vrms Harmonic Distortions 30 dBc Spurious 150MHz 147 5MHz 300kHz 150MHz 75 70 80 dBc dBc dBc Short Term Stability Allan Deviation tested after 30 min of operation t 1s 3 10 11 t 10s 1 10 11 t 100s 3 10 12 Description Conditions Min Typ Max Units SSB Phase Noise static 1Hz 10Hz 100Hz 1kH...

Страница 15: ...3 Specifications This page intentionally left blank 15 of 25 深圳市儒科电子有限公司 ...

Страница 16: ...ons This section provides information on mounting mating connectors operating temperature electrical interface EMI and noise susceptibility Mechanical Drawings 8200 Figure 4 1 Isometric View Figure 4 2 Dimensions Top Side Bottom 16 of 25 深圳市儒科电子有限公司 ...

Страница 17: ...nt to maintain a uniform temperature into the base plate of the 8200 through its mounting points The oscillator operates normally without ther mal tape However in some field applications the tape may simplify customer system thermal design requirements Warning To avoid personal injury attach the oscillator to a heat sink to prevent it from becoming too hot to touch The oscillator maximum base plat...

Страница 18: ...ature of 80 C the resonator or lamp heaters shut down as control point temperatures are exceeded and the unit temperature coefficients increase to approximately 6xE 10 C External Interfaces and Grounding 8200 Connectors Figure 4 7 Connector Placement Figure 4 8 Connector J1 D Connector Plug 15 Pins MIL RF 24308 18 of 25 深圳市儒科电子有限公司 ...

Страница 19: ...cy control and that Service is required within several months 15 GND GND Power signal return all grounds must be connected Connector J2 Signal 10 MHz SINE OUT SMA MALE MIL PRF 39012 8200 RF Outputs RF Output Impedance versus Frequency The active RF output impedance for the 8200 is a nominal 50 Ω at 10 MHz but is a widely varying impedance at other frequencies You must take this into consideration ...

Страница 20: ...r 8200 An Rb frequency standard is a very precise component and you should employ optimum practices for its use Avoid using a power source that is also providing power to fans or equipment that generates high current pulses 8200 Start up Sequence When power is connected to connector J1 the 8200 begins its warm up cycle After six minutes the rubidium oscillator reaches a locked condition and its ou...

Страница 21: ...5 Installation and Operation This page intentionally left blank 21 of 25 深圳市儒科电子有限公司 ...

Страница 22: ...C with the following configuration n Data rate baud or B P S baud rate of the 8200 is 57 6K n No parity n 8 data bits n 1 stop bit n No local echo unit echoes n No hardware or software flow control Note The 8200 s UART connections are based on 5 Vdc logic levels RS232 Adapter Symmetricom p n 054 00269 000 required to connect 8200 to PC Data Format Run Mode Data Format Customer Mode 8200 outputs ar...

Страница 23: ...12 or f 2 Any value less than this will still be used Max value that can be used at one time is 4E 8 For larger frequency changes repeated steps equal to or smaller than 4E 8 should be used Unit always powers up at free running factory set frequency unless T command is used This command is always relative to the free run ning frequency t Save tuning data Saves current DDS frequency so the changes ...

Страница 24: ...8200 13 E Electrical Specifications 14 Electrical Specifications 8200 14 Environmental Requirements 12 External Interfaces and Grounding 18 F Factory Mode 23 G Guide Structure 8 H How to Use This Guide 8 I Installation 20 Installation and Operation 8 20 M Mechanical Considerations 17 Mechanical Drawings 8200 16 N Notices 3 24 of 25 深圳市儒科电子有限公司 ...

Страница 25: ...t up Sequence 20 Symmetricom Customer Assistance 2 4 Symmetricom Serial Interface Protocol 8 10 22 T The 8200 Line of Rubidium Oscillators 10 Thermal Considerations 17 U Using the Symmetricom Serial Interface Protocol 22 W Who Should Read This Guide 8 25 of 25 深圳市儒科电子有限公司 ...

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