Tektronix CG5001 with Pulse Head

. . . . . . The CG5001 is the computerized solution to large-scale scope calibration needs. The CG5001 can be used as part of a computer-based system to calibrate and verify all major oscilloscope parameters and is specifically designed for use where many oscilloscopes are maintained. Its programmability, combined with state-of-the-art performance, helps to minimize calibration lab labor while maximizing accuracy of verification checks. (from 1985 Tektronix catalog) Required either a TM5003 or TM5006. Option 01 - Adds high accuracy time base Option 02 - Deletes pulse head