Symmetricom 5402, 5401 manual Enter DAC Value, Request Firmware Version

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Operating Manual

Operation

Description:

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.

Response Format:

Enter DAC Value

Command Format:

Description:

ddddd - DAC Value; ddddd (0 to 65535 counts) controls the frequency of the oscillator.

Response Format:

Request Firmware Version

Command Format:

Description:

DTyyy - Firmware Number.

PN 8500-0150, Rev. A, May 2005

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Image 24 Contents
Airborne Disciplined Rubidium Oscillator Symmetricom, Inc Limited Warranty Operating Manual PrefaceWhere to Find Answers to Product and Document Questions Limitation of LiabilityProprietary Notice Conventions Used in This Guide When text appears It means This way Operating Manual Preface Typographical ConventionsOperating Manual Contents PN 8500-0150, Rev. A, May Contents-1Specifications Operating ManualProduct Overview Operating Manual IntroductionSymmetricom 5401 Airborne Disciplined Rubidium Oscillator Symmetricom 5402 Disciplined Rubidium OscillatorInstallation Symmetricom 5401 Installation ProcedureOperating Manual Installation Unpacking and InspectionSymmetricom 5401 Adjustments 5401 Adjustment LocationsSymmetricom 5402 Rack Mounting Procedure Symmetricom 5402 Installation Procedure Symmetricom 5402 AdjustmentsSymmetricom 5402 Initial Operation RS-232 Input/Output Operating Manual OperationOperating Manual Operation DRO Commands Via RS-232 Status RequestDiscipline Off DescriptionDiscipline On Dynamic Gain ControlEnter KM Enter KO1, KO2Minutes Enter Disgain Enter Resync ThresholdEnter Resync Delay Enter Rate ThresholdBurst Status On Burst Status OffStatus will be output every second Turns burst status offDRO Discipline Sequence Flowchart Request TIEnter DAC Value Request Firmware VersionDTyyy Firmware Number PN 8500-0150, Rev. A, May Enter Start-up Parameters Request Start-up ParametersOperating Manual Operation Revision Letter of Firmware Calibrate Unit Response Format DescriptionSet Defaults Returns the unit to a default state Default ValuesRequest Setup Parameters Enter 1 PPS Offset not implementedInput Threshold High/Low Enter Programmable Delay Value Enter Oscillator Control Range not implementedDesign Verify On/Off Cal Status Enter Estimation Filter Time ConstantEnter Dynamic Gain Factors Input Specifications and Characteristics Operating Manual SpecificationsInput Specifications and Characteristics Output Specifications and Characteristics Output Specifications and CharacteristicsCoherence a Indicators Front Panel 5401 Indicators Front Panel5402 Indicators Front Panel DRO Internal Time BasesOperating Manual Specifications DRO Internal Time Bases MHz Oven Oscillator10 MHz Oven Oscillator Dimensions WeightApproximately 8 pounds Approximately 10 pounds PN 8500-0150, Rev. A, MayEnvironment EMI