Operating Manual

Operation

Set Defaults

Command Format:

Description:

Returns the unit to a default state.

Table 2 Default Values

Parameter

Default Value

 

 

Discipline

On

 

 

Dynamic Gain Floor

4

 

 

Dynamic Gain Ceiling

30

 

 

Dynamic Gain Rate Factor

0.0005 ns

 

 

Dynamic Gain Offset Factor

5.0 ns

 

 

Km

0.99997

 

 

Ko1

0.99984

 

 

Ko2

0.99984

 

 

Disgain

1280

 

 

Resync Threshold

1 µs

 

 

Resync Delay

60 seconds

 

 

Rate Threshold

0.04 µs

 

 

Burst

On

 

 

DAC

32767

 

 

Start-up Parameters

See Note 1: Start-up Parameters, on page 20.

 

 

Default Calibrate Unit (Cable Delay)

0

 

 

1PPS Offset

0

 

 

Input Threshold

High

 

 

Programmable Delay Value

036

 

 

Oscillator Control Range

5e-9

 

 

Design Verification

Off

 

 

Rate Error TC

0.9995

 

 

Offset Error TC

0.9995

 

 

PN 8500-0150, Rev. A, May 2005

19

Page 27
Image 27
Symmetricom 5401, 5402 manual Set Defaults, Returns the unit to a default state Default Values

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.