Operating Manual

Installation

Symmetricom 5402 Installation Procedure

1.Install the unit in the desired location and connect the unit to an AC power source. Refer to Chapter 4 for specifications and connector designations and locations.

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 RS232 I/O is not necessary for operation, but it is desirable in order to monitor status or enter new control parameters.

Symmetricom 5402 Initial Operation

Upon completion of the installation:

1.Apply power to the unit by turning on the front panel ON/OFF power switch. Observe that the green POWER LED indicator illuminates.

2.After approximately five minutes, the internal Rubidium oscillator will have attained lock (resonance). The 10 MHz outputs are now stable for use. Disciplining of the Rubidium oscillator will begin once 1 PPS input is present.

The 5402 is now operational and will begin to discipline the Rubidium using the control parameters that were previously stored in battery-backed RAM when the unit was last powered-down.

Symmetricom 5402 Adjustments

The amplitude of each of the 10 MHz outputs can be individually adjusted with potentiometers located on the 3 Channel Distribution Amplifier (Assembly 35039). Access to these potentiometers is through holes in the rear panel. Each hole (and its associated potentiometer) is clearly labeled as to which output it adjusts. See Figure 4 for the location of the adjustments.

Figure 4 Symmetricom 5402 Rear Panel

PN 8500-0150, Rev. A, May 2005

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Symmetricom Symmetricom 5402 Installation Procedure, Symmetricom 5402 Initial Operation, Symmetricom 5402 Adjustments

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.