OSA 5565 STS

Wander Measurement Equipment for Telecom Applications

OSA 5565 STS
Figure 1: Typical application for the OSA 5565
Figure 2 : Example of graph window from the WinSTS software while measuring the OSA 5533C SDU.

 

PDF_014_36x36.jpgDownload the datasheet

Features

Displays measurements graphs in real time (also during the measurement).

The OSA 5565 STS accepts a variety of input signals for reference and/or calibration.

These are:

  •  Frequency input: range from 0.064 MHz to 16.384 MHz in steps of 8kHz
  • 10 MHz (dedicated reference)
  •  E1 / 2.048 Mb/s
  • T1 / 1.544 Mb/s

 

The reference signal from the Rubidium clock can be retrieved as an output signal. Available reference formats are:

  • 2.048 MHz
  • 10.000 MHz

Applications

Figure 1 below shows a typical application for the OSA 5565 STS, where the synchronization output from a public switch equipment is tested against a known synchronization reference. The calculations are carried out by the WinSTS software and the results are displayed as graphs which can be compared with relevant international standards. For more specific analysis of the result, all data from the OSA 5565 STS can be examined in table form.

Introduction

Synchronization forms a vital part of any digital telecom network. A well maintained synchronization backbone minimises network errors, thus increases network efficiency. The result is a higher quality of service and a  greater use of capacity.

Synchronization issues are quite often addressed reactively only when problems have occurred. The introduction of more stringent industry standards has led to the need for greater control of synchronization. For network operators this involves proactively monitoring the performance of synchronization signals to identify potential problems.

For equipment manufacturers, this means testing their equipment to ensure conformance with design objectives and with standards.

Traditionally, assessing the quality of synchronization has been a tedious process because of the unavailability of appropriate test equipment.

The OSA 5565 STS Synchronization Test Set is a fully portable equipment for accurate high-resolution measurement of telecom synchronization signals. It is in full compliance with the ITU-T O.172 recommendation for wander measuring equipment.

The OSA 5565 STS is compact, lightweight and it is operational 15min. after power up.

Moreover, thanks to the internal high stability Rubidium oscillator, it can perform most measurements without the need of an external reference.

For higher precision measurements, the OSA 5565 STS can also be connected to an external reference source such as a Cesium clock or a high stability GPS receiver.

Summary of Features

Inputs:

1 x 64 to 16,384kHz in steps of 8kHz
1 x 2.048Mbps or 1.544Mbps

Outputs:

1 x 10 MHz, 2,2Vpp 50W
2 x 2.048 MHz according to G703.13

Internal Reference:

High stability Rubidium,
-11/month,
3 x 10-12 for 100s (Allen Variance)

External Reference:

10MHz

Sampling rate:

12.5ms to 100s, user selectable

Measurement Period:

360,000 x sampling rate

Measurement Resolution:

100ps

Communications:

RS232 interface

Presentation of Measurement Data:

The WinSTS application, running on a PC with Windows 98, NT 4.0, 2000, XP, displays calculated graphs while the measurement is taking place: TIE, MTIE, TDEV, Df/f, ADEV and MADEV.

Power:

115 VAC or 220 VAC power Supply

Power Consumption:

40W in steady state (fully equipped)

Dimensions and weight:

145 x 275 x 400mm, 8kg

Compliant to international standards:

ITU-T O.172 complient
Software containing all relevant ANSI, ETSI and ITU-T templates

EMC and Safety:

Fully CE approved

 

Powerful analysing software

SyncTester is delivered with a set of accessoriesthat enhances its measurement capabilities and enables connection to a wide range of signals. These include a passive coupler for in-line measurements of Mbit/s links and various connecting devices.

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PC hardware requirement (Minimum):

  • Processor : Intel Pentium (100 MHz)
  • RAM : 16MB
  • HD : 6MB
  • Storage : @1 Mb for 1s. sampling rate measurement during 15 hours.
  • Drivers : CD-Rom drive
  • Display : VGA
  • Ports : 1xSerial port (RS-232C)
  • Operating system : MS-Windows 98/NT 4.0/2000/XP