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The Advantest D3285 error detector measures the bit error rate, error count, error second (ES), erroe-free second (EFS), and frequencies within a wide range from 500MHz to 10 GHz. The D3285's main features are as follows: displays results of measurement clearly using a large green LED; detects INSERT (0 to 1) and OMIT (1 to 0) errors seperately; incorporates aprogram pattern memory to change ten kinds of word patterns quickly; PBRS pattern allows a mark ratio to vary within the range from 1/8 to 7/8, and 0/8 and 8/8; provided with amotor drive delay line of 1 ps resolution, variable up to ± 400 ps to clock input; master-slave function available to use the same pattern as generated by the combined D3185/D3185A; equipped with AUTO SEARCH function to search the optimum value threshold level and phase delay (phase between for data input and clock input); supplied with a GPIB; and the unit is provided with monitor output, synchronous output, error output, and alarm output.
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