Symmetricom 5401, 5402 manual Discipline Off, Description

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Operating Manual

Operation

Description:

Rx - Rubidium lock; x=0 not Locked, x=1 Locked

Dx - Discipline On/Off; x=0 discipline off, x=1 discipline on

Px - 1 PPS input present; x=0 not present, x=1 present

Vx - Valid 1 PPs; x=0 unstable, x=1 stable. Time change in the 1 PPS is less than the rate threshold.

Ttttttt.ttt - Time Interval; tttttt.ttt is the time interval (0 to 999999.999 microseconds) of the last 1 PPS event.

Sssssss.s - Seconds Counter; ssssss.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 maximum is reached.

Eddddd - DAC value; ddddd is the DAC value (0 to 65535), and is proportional to the voltage applied to the oscillator.

Hhhh.h - Temperature count; hhh.h is the dithered temperature sensor value.

Ggg.g - Dynamic Gain; gg.g is the current value being used in the disciplining algorithm for dynamic gain.

Response Format:

Discipline Off

Command Format:

Description:

The oscillator discipline is turned off. The Rubidium control voltage (DAC value) will remain constant.

PN 8500-0150, Rev. A, May 2005

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Airborne Disciplined Rubidium Oscillator Symmetricom, Inc Operating Manual Preface Limited WarrantyProprietary Notice Where to Find Answers to Product and Document QuestionsLimitation of Liability Conventions Used in This Guide Operating Manual Preface Typographical Conventions When text appears It means This wayPN 8500-0150, Rev. A, May Contents-1 Operating Manual ContentsOperating Manual SpecificationsOperating Manual Introduction Product OverviewSymmetricom 5402 Disciplined Rubidium Oscillator Symmetricom 5401 Airborne Disciplined Rubidium OscillatorSymmetricom 5401 Installation Procedure InstallationOperating Manual Installation Unpacking and Inspection5401 Adjustment Locations Symmetricom 5401 Adjustments Symmetricom 5402 Rack Mounting Procedure Symmetricom 5402 Initial Operation Symmetricom 5402 Installation ProcedureSymmetricom 5402 Adjustments Operating Manual Operation RS-232 Input/OutputStatus Request Operating Manual Operation DRO Commands Via RS-232Description Discipline OffDynamic Gain Control Discipline OnMinutes Enter KMEnter KO1, KO2 Enter Resync Threshold Enter DisgainEnter Rate Threshold Enter Resync DelayBurst Status Off Burst Status OnStatus will be output every second Turns burst status offRequest TI DRO Discipline Sequence FlowchartDTyyy Firmware Number PN 8500-0150, Rev. A, May Enter DAC ValueRequest Firmware Version Operating Manual Operation Revision Letter of Firmware Enter Start-up ParametersRequest Start-up Parameters Response Format Description Calibrate UnitReturns the unit to a default state Default Values Set DefaultsEnter 1 PPS Offset not implemented Request Setup ParametersInput Threshold High/Low Enter Oscillator Control Range not implemented Enter Programmable Delay ValueDesign Verify On/Off Enter Estimation Filter Time Constant Cal StatusEnter Dynamic Gain Factors Input Specifications and Characteristics Input Specifications and CharacteristicsOperating Manual Specifications Output Specifications and Characteristics Output Specifications and CharacteristicsCoherence a 5401 Indicators Front Panel Indicators Front Panel5402 Indicators Front Panel DRO Internal Time Bases10 MHz Oven Oscillator Operating Manual Specifications DRO Internal Time BasesMHz Oven Oscillator Weight DimensionsApproximately 8 pounds Approximately 10 pounds PN 8500-0150, Rev. A, MayEMI Environment