113
The Tektronix 113 is a 60ns 50-ohm delay line made of about 50 feet of 7/8" Spir-o-line cable. The 0% to 50% risetime is specified as 2.5ps and the 10% to 90% risetime is specified as less than 100ps. The input and output connectors of the 113 are GR-874. The 113 weighs about 59 pounds (27kg).
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Description in 1965 Tek Catalog