E8267D Option SP1 provides connectivity to Signal Studio for Jitter Injection on the E8267D. The software has pre-defined rates and deviations according to Table 3.3 ITU-T G.8251 (10/02) input jitter tolerance limit on the Optical Transport Network (OTN). The user can set up custom rates, deviations, and waveform types such as, sinusoidal, square, saw tooth, exponential, triangle and custom. These periodic jitter types can also be summed with random jitter for a composite clock signal.