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Channel analyserhelps telecoms manufacturer save on production costs
16 Feb 2000, Test & Measurement

Siemen's Technical Support Centre has recorded significant time and labour savings following the installation earlier this year of a PCM-40 channel analyser from WWG SA, reports Johannes Mans, Product Group Manager.

The PCM-40 channel analyser is used for testing PABX specifications prior to submission for Telkom approval. It has been designed as a lower cost alternative to Wandel & Goltermann's renown PCM-4, which is used as a laboratory standard by all Telecom operators in the world.

Mans says by testing voice and data equipment in-house, Siemens is able to pick up and rectify problems that arise before submitting the product to Telkom, thus saving on time and labour needed to finalise approval.

"In addition it speeds up the development process so that we can get the product to the market quicker, which has obvious advantages to all concerned," he adds.

WWG SA product specialist Gurkan Hasircioglu explains that communication systems and network elements are subjected to a wide variety of environmental influences, which adversely affect component performance to a greater or lesser degree."If the effects of such factors on, say, system gain are to be recorded, the PCM-40 provides support for this application. During system line-up, the results and instrument configuration are stored so that they can easily be recalled. In the subsequent measurement, these results are displayed within the tolerance mask and the new result trace is superimposed. The instrument then determines the difference between the two measurements so that the deviation can be seen directly.

"The PCM-40 continuously monitors the connected test signal during the measurement and displays the result on the front panel and in detail on the screen."

The test equipment settings required for routine or specialised manually-performed measurements, along with explanatory comments, can simply be stored by the PCM-40. The number of setups, which can be stored is limited only by the system resources of the computer being used.

"Automatic test sequences can be produced by combining several test configurations from the range of setups which have been stored. All of the measurement functions included in the PCM-40, along with any variations in test variables, parameters and tolerance limits, can be used for this in any order required. The sequence can be programmed to stop if an incorrect result is obtained or before each difference measurement task."

WWG SA, a member of the Spescom Group and a leading company in communications test solutions, is the sole local distributor of WWG products.

For further information contact Rui Godinho, WWG SA, (011) 266 1817.


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