Symmetricom 5401 manual Symmetricom 5402 Rack Mounting Procedure

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Operating Manual

Installation

Symmetricom 5402 Rack Mounting Procedure

The 5402 is designed for standard nineteen-inch rack mounting.

Optional chassis slides are recommended if the unit is to be installed in an equipment rack. If slides are not used, a supporting bar or tray should be provided for the rear of the instrument. The chassis slides attach to the sides of the 5402. To mount the slides, use six # 8/32 screws, 1/2 inch long (three on each side).

Caution: If the 5402 is mounted in a rack by merely attaching the front panel to the RETMA rails, with no rear chassis support, the front panel will warp and eventually break. General Cautions/Hazards to be considered when installing the 5402 Timing Unit into an equipment rack include:

TMRA - The maximum recommended ambient temperature (TMRA) that this equipment is specified to operate in is 50ºC.

Elevated Operating Ambient Temperature - If installed in a closed or multi-unit rack assembly, the operating ambient temperature of the rack environment may be greater than room ambient. Therefore, consideration should be given to installing the equipment in an environment compatible with the maximum rated ambient temperature (TMRA).

Reduced Air Flow - The equipment has no cooling fans and depends on convection for cooling. Installation in a rack may cause an excessive heat rise if sufficient air flow is not available. Installation should be such that the amount of air flow required for safe opera- tion of the equipment is not compromised.

Mechanical Loading - Mounting of the equipment in the rack should be such that a haz- ardous condition is not achieved due to uneven mechanical loading.

Circuit Overloading - Consideration should be given to the connection of the equipment to the supply circuit and the effect that overloading of circuits might have on over current protection and supply wiring. Appropriate consideration of equipment nameplate ratings should be used when addressing this concern.

Reliable Earthing - Reliable earthing of rack-mounted equipment should be maintained. Particular attention should be given to supply connections other than direct connections to the branch circuit (e.g., use power strips).

PN 8500-0150, Rev. A, May 2005

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Contents Airborne Disciplined Rubidium Oscillator Symmetricom, Inc Operating Manual Preface Limited WarrantyLimitation of Liability Where to Find Answers to Product and Document QuestionsProprietary Notice 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 AdjustmentsSymmetricom 5402 Rack Mounting Procedure Symmetricom 5402 Adjustments Symmetricom 5402 Installation ProcedureSymmetricom 5402 Initial Operation Operating Manual Operation RS-232 Input/OutputStatus Request Operating Manual Operation DRO Commands Via RS-232Description Discipline OffDynamic Gain Control Discipline OnEnter KO1, KO2 Enter KMMinutes 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 FlowchartRequest Firmware Version Enter DAC ValueDTyyy Firmware Number PN 8500-0150, Rev. A, May Request Start-up Parameters Enter Start-up ParametersOperating Manual Operation Revision Letter of Firmware 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 Operating Manual Specifications Input Specifications and CharacteristicsInput Specifications and Characteristics Output Specifications and Characteristics Output Specifications and CharacteristicsCoherence a 5401 Indicators Front Panel Indicators Front Panel5402 Indicators Front Panel DRO Internal Time BasesMHz Oven Oscillator Operating Manual Specifications DRO Internal Time Bases10 MHz Oven Oscillator Weight DimensionsApproximately 8 pounds Approximately 10 pounds PN 8500-0150, Rev. A, MayEMI Environment

5401, 5402 specifications

The Symmetricom 5402 and 5401 are highly regarded timing and synchronization solutions designed for telecommunications and data networking applications. These devices are part of the renowned line of precision timekeeping products developed by Symmetricom, which is now known as Microchip Technology.

The Symmetricom 5402 offers advanced capabilities, including GPS and precision time protocol (PTP) synchronization. It provides an accurate and stable time reference, crucial for industries that require precise timing to ensure system integrity and communication efficiency. The 5402 supports various synchronization protocols including IEEE 1588v2, ensuring interoperability with existing systems. This allows organizations to implement cutting-edge technologies while maintaining compatibility with older infrastructure.

On the other hand, the Symmetricom 5401 serves as a more compact and economical option tailored for specific applications where full GPS capabilities may not be necessary. This unit simplifies the synchronization process while still offering reliable performance. The 5401 provides multiple outputs including T1/E1 and 10 MHz, making it versatile for different network configurations.

Both models incorporate advanced oscillator technology that ensures accuracy and stability. They have a temperature-compensated crystal oscillator (TCXO) or optional oven-controlled crystal oscillator (OCXO) that provides superior frequency stability across a wide range of operating conditions. These devices also feature high-performance phase-locked loops (PLLs), which enhance their ability to maintain synchronization over time and under varying operational environments.

Additional features include robust network management capabilities, allowing for real-time monitoring and diagnostics through a user-friendly interface. The devices are equipped with multiple input/output ports that facilitate seamless integration into existing network architectures. The Symmetricom 5402 and 5401 support both local and remote management, enabling network administrators to maintain optimal synchronization performance.

In summary, the Symmetricom 5402 and 5401 deliver reliable, high-precision timing solutions designed to meet the demands of modern telecommunications infrastructures. With their advanced synchronization technologies, versatile connectivity options, and robust performance characteristics, these devices are essential components for ensuring accurate timekeeping in any network. Whether organizations choose the feature-rich 5402 or the cost-effective 5401, they can be confident in the reliability and precision these products deliver.
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