Keysight (formerly Agilent T&M) 3780A Pattern Generator / Error Detector

Description

Description  

The HP 3780A pattern generator/error detector is an error measuring set in one portable package for use in manufacturing, field trials, commissioning, and maintenance of digital transmission terminal and link equipment. The instrument measures binary errors and code errors in digital transmission equipment operating at rates between 1 kb/s and 50 MB/s. Frequency offset generation and measurement are provided at the standard PCM/TDM transmission rates.

A range of standard PRBS test patterns and automatic pattern recognition / synchronisation are provided for simple performance checks. It also has flexible WORD generation and zero substitution to explore regenerator timing recovery performance and to detect systematic errors.Binary clock and data or ternary coded data interfaces can be selected with automatic equilization at 2, 8, and 34 Mb/s on the receiver.Results are displayed as error COUNT or BER over a range of gating periods, and can be logged or presented graphically on an external printer.

Key Features

• 1 kb/s to 50 Mb/s PCM/TDM error measuring
• Measurements
  • Binary errors: Closed loop bit-by-bit detection on any pattern produced by generator, excluding added zeros or alternating words
  • Code errors: Violations of coding rule detected on any pattern with AMI, HDB3, or HDB2 coding (optionally AMI, B6ZS, or B3ZS)
  • Frequency offset: Measurement of fractional offset of generator clock output from installed crystal rates
• Internal crystal clocks and clock recovery
• Clock frequency offset generation and measurement
• Ternary coded and binary interfaces
• PRBS and WORD pattern generation and detection
• Printer and recorder outputs