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Bedienungsanleitung Symmetricom 5401

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  • Symmetricom 5401 - page 1

    5401 Airborne Disciplined Rubidium Oscillator 5402 Disciplined Rubidium Oscillator Operating Manual Preliminary Re v . A, May 2005 PN 8500-0150 ...

  • Symmetricom 5401 - page 2

    Symmetricom, Inc. 2300 Orchard Par kway San Jose, CA 95131-1017 U.S.A. http://www .symmetricom.com Copyright © 1999–2005 Symm etricom, Inc. All rights reserved. Printed in U.S.A. This manual is provide d to assist the user in th e operation and maintenance of the supplied equipment or software. It is recognized that multiple copies may be re qui ...

  • Symmetricom 5401 - page 3

    PN 8500-0150, Rev . A, May 200 5 iii Operating Manual Preface Pr eface Limited W arranty Each new product manufactured by Symmetricom is warrante d for defects in material or workmanship for a period of one yea r from date of shipment (“Limited W arranty”). Defects in material or workmanship found within that perio d will be replaced or repa ir ...

  • Symmetricom 5401 - page 4

    Operating Manual Preface PN 8500-0150, Rev . A, May 200 5 iv Limitation of Liability By purchasing any product from Symmetricom, the Buyer con sents to and agree s that the Buyer ’s sole and exclusive remedy for a ny damages or losses incurred by the Buyer a s a result of Symmetricom’ s breach of it s one-year Limited W arranty for defects in m ...

  • Symmetricom 5401 - page 5

    PN 8500-0150, Rev . A, May 2005 v Operating Manual Preface Conventions Used in This Guide This guide uses the follo wing conventions:  Acronyms and Abbreviations – T erms are spelled ou t the first time they appear in text. Thereafter , only the acronym or abbreviation is used.  Revision Control – The title p age lists the printing date a ...

  • Symmetricom 5401 - page 6

    Operating Manual Preface PN 8500-0150, Rev . A, May 2005 vi T able 2 T ypographical Conventions When text appears this way ... ... it means: SSU-2000 User’s Guide The title of a document. SSU CRITICAL IOC1 An operatin g mode, alarm state, status, or cha ssis label. Select File , Open ... Click the Open option on the File menu. Press Enter Press ; ...

  • Symmetricom 5401 - page 7

    PN 8500-0150, Rev . A, May 2005 Contents -1 Operating Manual Contents Preface Limited Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . iii Limitation of Liability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . iv Proprietary Notice . . . . . . . . . . ...

  • Symmetricom 5401 - page 8

    Operating Manual PN 8500-0150, Rev . A, May 2005 Contents-2 Burst Status On . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Burst Status Off . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Request TI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...

  • Symmetricom 5401 - page 9

    PN 8500-0150, Rev . A, May 2005 1 Operating Manual Introduction 1 — Intr oduction Pr oduct Overview The purpose of the Symmetricom 5 401 Airb orne Disciplined Rubidi um and 5402 Disciplined Rubidium Oscillator (DRO) is to provide a precise time and frequency reference for other equipment. The DRO will base this reference on a precise 1 PPS input, ...

  • Symmetricom 5401 - page 10

    Operating Manual Introduction PN 8500-0150, Rev . A, May 2005 2 Symmetricom 5401 Airborne Disciplined Rubidium Oscillator The Symmetricom 5401 is built in an airborne p ackage that is powered b y standard aircraf t power (+28 VDC) and is installed by mounting t he chassis on a flat base plate. Refer to Chapter 4 for complete specif ications. Figure ...

  • Symmetricom 5401 - page 11

    PN 8500-0150, Rev . A, May 2005 3 Operating Manual Installation 2 — Installation Installation This section describes the unp acking, inspection, installation, and operation of the Symmetricom 5401 and 5402 Discip lined Rubidium Oscillators. Unpacking and Inspection The DRO is packaged in one shipping cont ainer . Inspect the unit for visible dama ...

  • Symmetricom 5401 - page 12

    Operating Manual Installation PN 8500-0150, Rev . A, May 2005 4 The 5401 is now operationa l and will begin to discipline the Rubidium using the control parameters that wer e previously stored in battery-backed RAM when th e unit was last powered-down. Symmetricom 5401 Adjustments The amplitude of each of the 10 MHz outputs can be individually adju ...

  • Symmetricom 5401 - page 13

    PN 8500-0150, Rev . A, May 2005 5 Operating Manual Installation Symmetricom 5402 Rack Mounting Pr ocedure The 5402 is designed for st andard nineteen-inch rack mounting. Optional chassis slides are recommended if the unit is t o be inst alled in an equipme nt rack. If slides are not used, a supp orting bar or tray should be pro vided for the rear o ...

  • Symmetricom 5401 - page 14

    Operating Manual Installation PN 8500-0150, Rev . A, May 2005 6 Symmetricom 5402 Installation Pr ocedur e 1. Install the unit in th e desired location a nd c onnect the unit to a n AC power source. Refer to Chapter 4 for specification s and connector designations and location s. 2. Connect the 1 PPS input to its 1 PPS source and connect the 1 PPS a ...

  • Symmetricom 5401 - page 15

    PN 8500-0150, Rev . A, May 2005 7 Operating Manual Operation 3 — Operation Neither the 5401 nor the 5402 have any external m anual controls. Signal output amplitude is controlled by internal potentiometers, which are located as described in Chapter 2 . All operational control of the DRO is accomplished by means of an RS-232 input/output p ort. RS ...

  • Symmetricom 5401 - page 16

    Operating Manual Operation PN 8500-0150, Rev . A, May 2005 8 T able 1 DRO Commands Via RS-232 S tatus Request Command Format: ...

  • Symmetricom 5401 - page 17

    PN 8500-0150, Rev . A, May 2005 9 Operating Manual Operation Description: Rx - Rubidium lock; x=0 not Locked, x=1 Locked Dx - Discipline On/Off; x=0 di scipline off, x=1 discipline on Px - 1 PPS input present; x= 0 not present, x=1 present Vx - V alid 1 PPs; x=0 unstable, x=1 stable. T i me change in the 1 PPS is less than the rate threshold. Ttttt ...

  • Symmetricom 5401 - page 18

    Operating Manual Operation PN 8500-0150, Rev . A, May 2005 10 Response Format: Discipline On Command Format: Description: The oscillator discipline is turned o n. When the conditions are favorable , the discipline algorithm will control the oscillator . Response Format: Dynamic Gain Contro l Command Format: Description: The dynamic gain value deter ...

  • Symmetricom 5401 - page 19

    PN 8500-0150, Rev . A, May 2005 1 1 Operating Manual Operation Response Format: Enter KM Command Format: Description: kkkkkk - Base number for Km ; kkkkkk (000000 to 999999) repr esents a number from 0 to 0.999999. Km controls the mix ratio of of fset error and frequency error compensation in the discipline algorithm. Response Format: Enter KO1, KO ...

  • Symmetricom 5401 - page 20

    Operating Manual Operation PN 8500-0150, Rev . A, May 2005 12 Description: nnnnnn - Base numbe r for Ko1; nnnnnn (000000 to 999999) represents a numb er from 0 to 0.999999. Ko1 controls the cut of f frequency of the offset error n oise filter . oooooo - Base numbe r for Ko2; oooooo (000000 to 999999) represents a numb er from 0 to 0.999999. Ko2 con ...

  • Symmetricom 5401 - page 21

    PN 8500-0150, Rev . A, May 2005 13 Operating Manual Operation Enter Resync Delay When the 1 PPS In is lost or becomes invalid (rate threshold is exceeded), the unit is placed into a holdover mode. It remains in th is mode until the 1 PPS In is valid for a time pe riod (in seconds) determined by "Resync Delay". At five seconds b efore disc ...

  • Symmetricom 5401 - page 22

    Operating Manual Operation PN 8500-0150, Rev . A, May 2005 14 Burst S tatus On Command Format: Description: S tatus will b e output every second. Response Format: Burst S tatus Off Command Format: Description: T urns burst status off. Response Format: No Response. When burst is on. When burst is of f: ...

  • Symmetricom 5401 - page 23

    PN 8500-0150, Rev . A, May 2005 15 Operating Manual Operation Figure 5 DRO Discipline Sequence Flowchart Request TI Command Format: ...

  • Symmetricom 5401 - page 24

    Operating Manual Operation PN 8500-0150, Rev . A, May 2005 16 Description: Ttttttt.ttt - T ime Interval; tttttt.ttt is the time interval (0 to 999999.999 microseconds) of the last 1 PPS event. Sssssss.s - Seconds Counter; ss ssss.s is the second count (0 to 999999.9 seconds) since the unit has been turned on. The count will roll over to zero when m ...

  • Symmetricom 5401 - page 25

    PN 8500-0150, Rev . A, May 2005 17 Operating Manual Operation r - Revision Letter of Firmware. Response Format: Enter S tart-up Parameters Command Format: Description: n - S tart-up Index; n (1 to 6) select s which one of 6 elements in the st art-up table that will be modified. gg.g - Dynamic Gain V alue; gg.g (0 to 99.9) represents the dynamic gai ...

  • Symmetricom 5401 - page 26

    Operating Manual Operation PN 8500-0150, Rev . A, May 2005 18 Response Format: Description: Nn - S tart-up Index; n (1 to 6) identifies which one of 6 elemen ts in the st art-up table was reported. Ggg.g - Dynamic Gain V alue; gg.g (0 to 99.9 ) represents the dynamic gain value that will be used during st art-up for element "n". Ttttttt - ...

  • Symmetricom 5401 - page 27

    PN 8500-0150, Rev . A, May 2005 19 Operating Manual Operation Set Defaults Command Format: Description: Returns the unit to a default st ate. T able 2 Default V alues Parameter Default V alue Discipline On Dynamic Gain Floor 4 Dynamic Gain Ceiling 30 Dynamic Gain Rate Factor 0.0005 ns Dynamic Gain Of fset Factor 5.0 ns Km 0.99997 Ko1 0.99984 Ko2 0. ...

  • Symmetricom 5401 - page 28

    Operating Manual Operation PN 8500-0150, Rev . A, May 2005 20 Response Format: Enter 1 PPS Offset (not implemented) Command Format: Description: yyyyyy .yyy - 1 PPS Offset; yyyy yy .yyy (0 to 999999.999 micros econds) is amount of extra delay applied to the 1 PPS output. I t is added to the unit zero point and the resync side load value. Response F ...

  • Symmetricom 5401 - page 29

    PN 8500-0150, Rev . A, May 2005 21 Operating Manual Operation Description: In T able 3 is a list of the data found in the response. The dat a is in the same format as the associated "Enter" command. A sp ace exist s between each of the p aramete rs, except where noted. The tot al count is 176 characters. Input Thr eshold High/Low Command ...

  • Symmetricom 5401 - page 30

    Operating Manual Operation PN 8500-0150, Rev . A, May 2005 22 Description: The input 1 PPS can be sliced at two deferent le vels. This command selects which slicing level is used. x=0 - High 5 volt input threshold, x= 1 - Low 2.5 volt input threshold. Response Format: Enter Programmable Delay V alue Command Format: Description: The yyy is a number ...

  • Symmetricom 5401 - page 31

    PN 8500-0150, Rev . A, May 2005 23 Operating Manual Operation The srr .rrrr is a number from -9 9.9999 to +99.9999 mi croseconds per second. The number is frequency change from DAC = 00000 to 65535 of the unit. This number is used in the discipline algorithm to help compensate for oscillato rs with dif ferent frequency Response Format: Design V eri ...

  • Symmetricom 5401 - page 32

    Operating Manual Operation PN 8500-0150, Rev . A, May 2005 24 Cal S tatus Command Format: Description: Cx - Calibration status: Response Format: Enter Estimation Filter T ime Constant Command Format: Description: nnnnnn - Base numbe r for the filtered rate exponential integra tor; nnnnnn (000000 to 999999) represent s a number from 0 to 0. 999999. ...

  • Symmetricom 5401 - page 33

    PN 8500-0150, Rev . A, May 2005 25 Operating Manual Operation Enter Dynamic Gain Factors Command Format: Description: Rrr .rrrr - Rate Factor; the normalizing value (i n nanoseconds) for rate when calculating the next dynamic gain. Oooo - Offset Factor; the normalizing value (in nanoseconds) for of fset (TI) when calculating the next dynamic gain. ...

  • Symmetricom 5401 - page 34

    Operating Manual S pecifications PN 8500-0150, Rev . A, May 2005 26 4 — Specifications This section cont ains the electrical, physical, and environ mental specifications for the 5401 and 5402 Disciplined Rubidium Oscillator . Input Specifications and Characteristics T able 4 Input S pecifications and Characteristics 5401 DC Power Input (J15 ) T y ...

  • Symmetricom 5401 - page 35

    PN 8500-0150, Rev . A, May 2005 27 Operating Manual S pecifications Output Specifications and Characteristics 5401 RS-232 Inp ut/Output T ype MS27499E10B35S 5401 Connector Pin Assignment s: Pin Function 1 Chassis Ground 2 T ransmitted Data 3 Received Data 4 Signal Grou nd 5-13 Not Used 5402 RS232 Input /Output T ype DB 9 5402 Connector Pin Assignme ...

  • Symmetricom 5401 - page 36

    Operating Manual S pecifications PN 8500-0150, Rev . A, May 2005 28 Coherence a The 1 PPS OUT time delay is < 10 nanoseconds from the mean of the 1 PPS Input Port to Port Isolation 90 dB Isolation (with respect to 1 PPS input) 90 dB DRO 10 MHz Output T ype 5401: Isolated SMA (J7- J12) 5402: Isolated SMA (J10-J15) The DRO output s 10 MHz signals ...

  • Symmetricom 5401 - page 37

    PN 8500-0150, Rev . A, May 2005 29 Operating Manual S pecifications 5401 Indicators (Fr ont Panel) 5402 Indicators (Fr ont Panel) DRO Internal T ime Bases T able 6 5401 Indicators (Front Panel) Power (LED) Indicates power applied to th e unit (see Figure 6 ). Lock (LED) Indicates Rubidium Locked status (see Figure 6 ). T able 7 5402 Indicators (Fro ...

  • Symmetricom 5401 - page 38

    Operating Manual S pecifications PN 8500-0150, Rev . A, May 2005 30 10 MHz Oven Oscillator Spur s: Harmonic 50 dBc Non-Harmonic 90 dBc Input V oltage Ra nge +19 to +32 VDC Input Power (Quiesc ent) 13 watts @ 25 ºC (+24 VDC) T able 9 10 MHz Oven Oscillator Output W a veform 10 MHz sine wave Output Level 0.5 VRMS into 50 Output Impedance 50 T emp er ...

  • Symmetricom 5401 - page 39

    PN 8500-0150, Rev . A, May 2005 31 Operating Manual S pecifications 5401 Dimensions Figure 6 5401 Mounting Dimensions 5401 W eight Approximately 8 pounds. 5402 W eight Approximately 10 pounds. ...

  • Symmetricom 5401 - page 40

    Operating Manual S pecifications PN 8500-0150, Rev . A, May 2005 32 5402 Dimensions Figure 7 5402 F ront Panel Figure 8 5402 Re ar Panel Envir onment Height 1.75 inches Width 17 inches (19 inches with mountin g ears) Depth 12 inches DRO Operating T emperature –20ºC to +50ºC DRO Operating Humidity 95% (non-condensing) up to 50ºC EMI FCC and CE ...

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Eine gänzliche Bedienungsanleitung von Symmetricom sollte einige Grundelemente enthalten. Ein Teil von ihnen ist nicht so wichtig, wie z.B.: die Titelseite oder Autorenseiten. Die restlichen von ihnen jedoch, sollten Informationen liefern, die für den Nutzer von enormer Wichtigkeit sind.

1. Einführung und Hinweise, wie man sich in einer Bedienungsanleitung von Symmetricom 5401 bewegt - Am Anfang jeder Bedienungsanleitung sollten wir Hinweise bezüglich der Nutzungsart eines bestimmten Ratgebers finden. In ihr sollten sich Informationen über die Lokalisierung des Inhaltsverzeichnisses von Symmetricom 5401 befinden, FAQ oder über oft auftretende Probleme – also Stellen, die von den Benutzern in jeder Bedienungsanleitung am meisten gesucht werden
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5. FAQ - häufig gestellte Fragen
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