The Type 564B Storage Oscilloscope is designed to store cathode-ray tube displays for viewing or photographing up to an hour after application of the input signal. In addition, the instrument can be operated as a conventional oscilloscope. The Type 564B is compatible with Tektronix 2-Series and 3-Series plug-in units [see following table and Section 2 for exceptions), thus it can be used in a variety of applications including differential, multi-trace, wide-band, delayed sweep, sampling and spectrum analysis. The cathode-ray tube used in the Type 564B is a direct view, bistable storage tube having an 8X10 centimeter display area, divided into two 4X10 cm storage screens. The storage screens are independently controlled for split screen applications. An additional area which does not store is provided to the left of the targets to function as a locate zone in the single-sweep store mode. This instrument will perform to the specifications listed in this section in a laboratory environment with ambient temperature range between 0°C and +50°C, except as indicated. Warmup time for rated accuracies is 5 minutes (certain plugins may require additional warmup time). The Performance Check instructions outlined in Section 5 provide a convenient method of checking the performance of this instrument".