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IP/NETWORK MEASURING INSTRUMENTS

Speeds troubleshooting

To speed troubleshooting the CMA 3000 displays alarms and trans-mission link status on LED indicators.The CMA 3000 status monitor is always active, providing essential information on the monitored transmission system, including: ?Line alarms on LED indicators with a trap facility ?Display of current input frequency and deviation ?Indication of input level ?Traffic channel usage ?Audio level in a traffic channel ?Propagation time monitor ?Listen-in on a traffic channel

Out-of-service or in-service statistics

For installation/commissioning and troubleshooting of out-of-service lines the CMA 3000 provides powerful statistical measurements for Bit Error Rate (BER) testing. Statistics are also available for in-service analysis of the transmis- sion-error performance of a line. Information on errors and alarms is collected in time-intervals as defined by you, and error-performance parameters (G.821/G.826/M.2100) are calculated. The Measurement Summary function gives you a rapid overview of a measurement via an ‘OK/Questionable/not-OK’ indication. You may also define thresholds for the ‘OK/not-OK’ levels. Histogram pre- sentations facilitate the tracing of errors over time.The instrument's two inputs allow instant monitoring of both sides ofa line and comparison of simultaneously recorded results. Fault location is greatly facilitated by the high degree of portability ofthe robust CMA 3000. This allows you take measurements at any suitable measuring point. Figure 1. The CMA 3000 allows you to perform in-service moni- toring of 2 Mbps lines. Figure 4. The Measurement Summary function gives you anOK/Questionable/not-OK indication. Figure 2. Fast overview of traffic channel time slots. Figure 3. Simultaneous out-of-service testing of up to two 2 Mbpslines with CMA 3000.

Advanced in-service troubleshooting

Troubleshooting transmission errors may require analysis of timing between events that occur within a few milliseconds. The CMA 3000’s high-resolution log makes it easier to analyze timing betweenerrors or alarms. Figure 5. CMA 3000 gives you a log of errors and alarms with high-resolution time stamps. http://www.nettest.com ? http://www.anritsu.com 226