D3186 is a high-performance pulse pattem generator to generate 7 types of pseudo-random (PRBS) patterns from 2 M to 2&-1, programmable (WORD) patterns up to 8M (2^3) bits, or frame patterns of SDH or SONET structure at very high speed from 150 Mb/s to 12 Gb/s. Moreover, a system, which is used to evaluate the bit error rate of super-high speed optical communication devices and compound semiconductors, can be structured by combining D3186 with the D3286 error detector. The advantages of the D3186 include: [Features] Ф A high-precision synthesized clock generator is built in. 0 16 types of frequency memories are provided for speedy frequency setting. Ф For PRBS patterns, mark ratio can be changed between 8 values. @ For FRAME pattern, the type of payload can be selected from WORD, PRBS and CID. (S> ALTERNATE mode is available which changes over 2 patterns (WORD and FRAME) to execute measurement. О Various types of application are available by using differential data output (DATA, DATA), differential clock output (CLOCK1, CLOCK1) and fixed amplitude clock output (CLOCK2). Ф Amplitude, offset and terminator conditions can be individually set for the differential data output and the differential clock output each. The terminator conditions can be selected from among TO О V, TO -2 V or AC coupling. ® From the motor drive type delay line, the phase of clock output can be changed in steps of 1 ps resolution up to ±400 ps. (1) Error can be added in repetition of 1 x 10-4 to 1 x 10*9, single or external control. © When error measurement is performed by using D3186 combined with D3286 Error Detector, the master slave function interlocks their patterns. (ED The GPIB (IEEE 488) feature enables full remote control, making it easy to construct a measurement and test system. The built-in floppy disk drive enables storing/calling the set conditions and the content of pattern setting. (MS-DOS® format)