PDH传输分析仪 HP37721A

PDH Transmission Analyser (Multiple outputs)

厂家: 美国惠普

• Bit and code error 测试速率 704Kb/s , 2Mb/s , 8Mb/s , 34Mb/s , 140Mb/s
• 设置和测试结果可存储在 non-volatile memory
• 文字和图形两种方式显示测试结果
• Multi-rate bit error measuring analyser providing analysis of receiver errors to G.821 requirements (G.703 / G.704 interface).
• Remote control, frequency offset and measurement, multiple outputs.

The HP 37721A digital transmission analyzer is a portable, lightweight, rugged test set providing bit and code error testing at the European CEPT rates of 704 kb/s, 2, 8, 34, and 140 Mb/s. It measures error performance to CCITT Recommendation G.821, with interfaces to G.703.

特点

• the auto setup facility automatically configures the test set to the incoming data;
• nine stored setups ensure that required test parameters are instantly available;
• graphic display of results shows error counts, error seconds, and alarms at a glance;
• and a range of logging options to an internal or external printer provides customized hard-copy proof of results.

Option 001 provides remote control via RS-232 and HP-IB interfaces and adds the ability to log results to an HP ThinkJet. Multiple outputs in Option 002 enable simultaneous loading of four channels of a multiplexer or digital radio with only one test set. With Option 003, up to 100 ppm of frequency offset is provided at all rates to evaluate clock-recovery circuits.

应用

• Maintenance of digital networks (PTTs, other network operators) 
• Installation of digital networks (PPTs, network operators, manufacturers) 
• Long-term unattended monitoring with error performance analysis based on CCITT Recommendation G.821 

测量摘要

Error Analysis

• As CCITT Recommendation G.821

Results Displayed

• Elapsed time in test period;
• errored seconds, percent errored seconds, error-free seconds, percent error-free seconds, severely errored seconds, percent severely errored seconds;
  unavailability, percent unavailability;
• degraded minutes, percent degraded minutes;
• code-error seconds;
• bit-error count, bit-error ratio;
• code-error count, code-error ratio;
• frequency, frequency offset;
• and alarms

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