Symmetricom 5402 manual Unpacking and Inspection, Symmetricom 5401 Installation Procedure

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Operating Manual

Installation

2 — Installation

Installation

This section describes the unpacking, inspection, installation, and operation of the Symmetricom 5401 and 5402 Disciplined Rubidium Oscillators.

Unpacking and Inspection

The DRO is packaged in one shipping container. Inspect the unit for visible damage (scratches, dents, etc.). If the instrument is damaged, immediately notify both Symmetricom and the responsible carrier. Keep the shipping container and packing material for the carrier's inspection.

Note: When communicating with either Symmetricom or the responsible carrier regarding shipping damage, refer to the serial number. This number is located on the front panel of the 5401 and the rear panel of the 5402.

Symmetricom 5401 Installation Procedure

1.Install the unit in the desired location and connect the unit to its power source. Refer to Chapter 4 for specifications and connector pin assignments.

2.Connect the 1 PPS input to its 1 PPS source and connect the 1 PPS and 10 MHz outputs to their desired destinations.

Connection to the RS-232 I/O is not necessary for operation, but it is desirable in order to monitor status or enter new control parameters.

Symmetricom 5401 Initial Operation

Upon completion of the installation:

1.Apply power to the unit and observe that the green POWER LED indicator illuminates. Note that this unit does NOT contain a power switch.

2.After approximately five minutes, the yellow LOCK LED indicator will illuminate indicating that the internal Rubidium oscillator has attained lock (resonance). The 10 MHz outputs are now stable for use. Disciplining of the Rubidium oscillator will begin once a 1 PPS input is present.

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 way PN 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 OscillatorUnpacking and Inspection InstallationSymmetricom 5401 Installation Procedure Operating Manual Installation5401 Adjustment Locations Symmetricom 5401 AdjustmentsSymmetricom 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 DelayTurns burst status off Burst Status OnBurst Status Off Status will be output every secondRequest 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 DRO Internal Time Bases Indicators Front Panel5401 Indicators Front Panel 5402 Indicators Front Panel10 MHz Oven Oscillator Operating Manual Specifications DRO Internal Time BasesMHz Oven Oscillator Approximately 10 pounds PN 8500-0150, Rev. A, May DimensionsWeight Approximately 8 poundsEMI Environment