The 7904 Oscilloscope Mainframe provides a 500MHz, four compartment mainframe for the wide range of Tektronix 7000-Series plug-in. Sensitivities to 10 mV/div are available at 500MHz while 1GHz bandwidths can be achieved using the 7A21N direct plug-in. Sweep speeds up to 500 ps/div are available using the appropriate time base plug-ins. Using the P6201 FET probe, a high impedance with 900MHz bandwidth is possible. Display is bright and crisp with logical layout of controls and a front-panel calibrator designed for compensation of probes, etc. Plug-ins sold separately.