English: Scope cart with additional test equipment. The oscilloscope is a 400 MHz bandwidth Tektronix 7854 modular oscilloscope with both analog and digital function. It was introduced in 1980, in 1984 the price was 14.230 US-Dollars (amounting to about 40.650 US-D in 2021, source for data and price). It is located on a Tek lab cart model 3 also from Tektronix. The four smaller devices underneath are from the test equipment series Tektronix TM500: A Tektronix Digital multimeter 501A, a Tektronix DC 503 A Universal counter / timer, a (third party) Spectracom 8163 WWVB standard frequency receiver, and a Tektronix FG 502 function / signal generator.