7403N
The Tektronix 7403N is a 65 MHz oscilloscope mainframe that takes two 7000-series vertical plug-ins and one 7000-series horizontal plug-in. It has a large screen, 8x10 divisions, where each division is 1.22 cm. There is no readout system.
The 7403N consumes a maximum of 130 watts and uses convection cooling, no fan. The power supply is a linear design, similar to that of the 7313. The 7403 weighs 30 pounds. The vertical and horizontal amplifiers are made of discrete bipolar transistors. The only integrated circuit in the vertical signal path is U214, the vertical channel switch, a 155-0022-00.
