Agilent/HP 3785B DS3/DS1 Jitter Generator and Receiver

Agilent/HP 3785B DS3/DS1 Jitter Generator and Receiver
Manufacturer: Agilent / HP
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Agilent/HP 3785B DS3/DS1 Jitter Generator and Receiver

 

Agilent/HP 3785B DS3/DS1 Jitter Generator and Receiver

Rent me for $100 a month

   The Agilent/HP 3785B Jitter Generator and Receiver is a dedicated jitter measurement system for testing and evaluating the performance of Bell digital transmission terminal and link equipment up to and including the third level (34368kb/s or DS-3) in the digital hierarchy. The 3785B can be used in production testing, field installation and maintenance of the Bell digital transmission system including PCM/TDM transmission over cable, radio, satellite, and fiber optic links. The Jitter receiver offers six types of measurement.

Features

  • Absolute jitter amplitude in U.1 peak-peak
  • Jitter peak, positive or negative
  • Jitter hit count of the number of times received jitter exceeds a user defined hit threshold in U.1 peak
  • Jitter hit seconds count of the number of second in which one or more jitter hits occur
  • Jitter hit-free seconds count of the number of seconds which are free of jitter hits
  • Maximum absolute jitter amplitude in U.1 peak-peak is held during the jitter analysis gating period

   In addition to providing a comprehensive measurement capability which includes in-service jitter measurements, the microprocessor-controlled Jitter Generator and Receiver is easy to use with ergonomic layout of switches and connectors on the front panel.  The bus-controlled operation and automatic measurement sequencing.

   The Jitter Generator may be used to phase modulate an internally provided crystal clock, an externally applied data stream.  Sinusoidal modulation is provided by an internal synthesizer whose amplitude and frequency can be set manually or swept, transient-free, through a CCITT shaped jitter tolerance mask programmed into the instrument.  Alternatively, external modulating signals can be applied. The frequency of internal modulation are in accordance with CCITT Recommendation 0.171 and are displayed on the front panel.

   The modulated clock output can be applied to an external pattern generator such as the HP 3780A, 3762Am 3781A or 3782B.  For jitter transfer function measurements, the CCITT standard 21 repetitive pattern is provided within the HP 3785A/B.  In addition, for dimultiplexer jitter transfer function, jitter can be applied to an externally applied data stream which has the necessary framing and justification digits. 

The Jitter Receiver offers six types of measurements

  • Absolute jitter amplitude in U.I. pk-pk
  • Jitter peak, positive or negative
  • Jitter hit count of the number of times received jitter extends a user-defined hit threshold in U.I. pk
  • Jitter hit seconds count of the number of seconds in which one or more jitter hits occur
  • Jitter hit-free seconds count of the number of seconds which are free of jitter hits
  • Maximum absolute jitter amplitude in U.I. pk-pk is held during the jitter analysis gating period

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